Android uses ashmem for sharing memory regions. We are looking forward
to migrating all usecases of ashmem to memfd so that we can possibly
remove the ashmem driver in the future from staging while also
benefiting from using memfd and contributing to it. Note staging drivers
are also not ABI and generally can be removed at anytime.
One of the main usecases Android has is the ability to create a region
and mmap it as writeable, then add protection against making any
"future" writes while keeping the existing already mmap'ed
writeable-region active. This allows us to implement a usecase where
receivers of the shared memory buffer can get a read-only view, while
the sender continues to write to the buffer.
See CursorWindow documentation in Android for more details:
https://developer.android.com/reference/android/database/CursorWindow
This usecase cannot be implemented with the existing F_SEAL_WRITE seal.
To support the usecase, this patch adds a new F_SEAL_FUTURE_WRITE seal
which prevents any future mmap and write syscalls from succeeding while
keeping the existing mmap active.
Verified with test program at: https://lore.kernel.org/patchwork/patch/1008117/
Backport link: https://lore.kernel.org/patchwork/patch/1014892/
Bug: 113362644
Change-Id: If7424db3b64372932d455f0219cd9df613fec1d4
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Joel Fernandes <joelaf@google.com>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Joel Fernandesauthored and Sorayukiicommited 2026-05-15 18:04:21 +07:00
Introduce MADV_WIPEONFORK semantics, which result in a VMA being empty
in the child process after fork. This differs from MADV_DONTFORK in one
important way.
If a child process accesses memory that was MADV_WIPEONFORK, it will get
zeroes. The address ranges are still valid, they are just empty.
If a child process accesses memory that was MADV_DONTFORK, it will get a
segmentation fault, since those address ranges are no longer valid in
the child after fork.
Since MADV_DONTFORK also seems to be used to allow very large programs
to fork in systems with strict memory overcommit restrictions, changing
the semantics of MADV_DONTFORK might break existing programs.
MADV_WIPEONFORK only works on private, anonymous VMAs.
The use case is libraries that store or cache information, and want to
know that they need to regenerate it in the child process after fork.
Examples of this would be:
- systemd/pulseaudio API checks (fail after fork) (replacing a getpid
check, which is too slow without a PID cache)
- PKCS#11 API reinitialization check (mandated by specification)
- glibc's upcoming PRNG (reseed after fork)
- OpenSSL PRNG (reseed after fork)
The security benefits of a forking server having a re-inialized PRNG in
every child process are pretty obvious. However, due to libraries
having all kinds of internal state, and programs getting compiled with
many different versions of each library, it is unreasonable to expect
calling programs to re-initialize everything manually after fork.
A further complication is the proliferation of clone flags, programs
bypassing glibc's functions to call clone directly, and programs calling
unshare, causing the glibc pthread_atfork hook to not get called.
It would be better to have the kernel take care of this automatically.
The patch also adds MADV_KEEPONFORK, to undo the effects of a prior
MADV_WIPEONFORK.
This is similar to the OpenBSD minherit syscall with MAP_INHERIT_ZERO:
https://man.openbsd.org/minherit.2
[akpm@linux-foundation.org: numerically order arch/parisc/include/uapi/asm/mman.h #defines]
Link: http://lkml.kernel.org/r/20170811212829.29186-3-riel@redhat.com
Signed-off-by: Rik van Riel <riel@redhat.com>
Reported-by: Florian Weimer <fweimer@redhat.com>
Reported-by: Colm MacCártaigh <colm@allcosts.net>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Cc: <linux-api@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Rik van Rielauthored and Sorayukiicommited 2026-05-15 18:04:15 +07:00
Add ability to memory-map contents of BPF array map. This is extremely useful
for working with BPF global data from userspace programs. It allows to avoid
typical bpf_map_{lookup,update}_elem operations, improving both performance
and usability.
There had to be special considerations for map freezing, to avoid having
writable memory view into a frozen map. To solve this issue, map freezing and
mmap-ing is happening under mutex now:
- if map is already frozen, no writable mapping is allowed;
- if map has writable memory mappings active (accounted in map->writecnt),
map freezing will keep failing with -EBUSY;
- once number of writable memory mappings drops to zero, map freezing can be
performed again.
Only non-per-CPU plain arrays are supported right now. Maps with spinlocks
can't be memory mapped either.
For BPF_F_MMAPABLE array, memory allocation has to be done through vmalloc()
to be mmap()'able. We also need to make sure that array data memory is
page-sized and page-aligned, so we over-allocate memory in such a way that
struct bpf_array is at the end of a single page of memory with array->value
being aligned with the start of the second page. On deallocation we need to
accomodate this memory arrangement to free vmalloc()'ed memory correctly.
One important consideration regarding how memory-mapping subsystem functions.
Memory-mapping subsystem provides few optional callbacks, among them open()
and close(). close() is called for each memory region that is unmapped, so
that users can decrease their reference counters and free up resources, if
necessary. open() is *almost* symmetrical: it's called for each memory region
that is being mapped, **except** the very first one. So bpf_map_mmap does
initial refcnt bump, while open() will do any extra ones after that. Thus
number of close() calls is equal to number of open() calls plus one more.
Change-Id: I16d3912dee0c18949866b2b136cd0a5d687159da
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Link: https://lore.kernel.org/bpf/20191117172806.2195367-4-andriin@fb.com
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Andrii Nakryikoauthored and Sorayukiicommited 2026-05-15 17:59:15 +07:00
Add two new probe_kernel_read_strict() and strncpy_from_unsafe_strict()
helpers which by default alias to the __probe_kernel_read() and the
__strncpy_from_unsafe(), respectively, but can be overridden by archs
which have non-overlapping address ranges for kernel space and user
space in order to bail out with -EFAULT when attempting to probe user
memory including non-canonical user access addresses [0]:
4-level page tables:
user-space mem: 0x0000000000000000 - 0x00007fffffffffff
non-canonical: 0x0000800000000000 - 0xffff7fffffffffff
5-level page tables:
user-space mem: 0x0000000000000000 - 0x00ffffffffffffff
non-canonical: 0x0100000000000000 - 0xfeffffffffffffff
The idea is that these helpers are complementary to the probe_user_read()
and strncpy_from_unsafe_user() which probe user-only memory. Both added
helpers here do the same, but for kernel-only addresses.
Both set of helpers are going to be used for BPF tracing. They also
explicitly avoid throwing the splat for non-canonical user addresses from
00c42373d397 ("x86-64: add warning for non-canonical user access address
dereferences").
For compat, the current probe_kernel_read() and strncpy_from_unsafe() are
left as-is.
[0] Documentation/x86/x86_64/mm.txt
Change-Id: I1256fa00e1869a14519e186a89d5ab65f9fcbc29
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: x86@kernel.org
Link: https://lore.kernel.org/bpf/eefeefd769aa5a013531f491a71f0936779e916b.1572649915.git.daniel@iogearbox.net
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Daniel Borkmannauthored and Sorayukiicommited 2026-05-15 17:59:04 +07:00
This gives us five words of space in a single union in struct page. The
compound_mapcount moves position (from offset 24 to offset 20) on 64-bit
systems, but that does not seem likely to cause any trouble.
Link: http://lkml.kernel.org/r/20180518194519.3820-11-willy@infradead.org
Change-Id: I5e59a5294d539b231656c5bd9847dde855150f76
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Matthew Wilcoxauthored and Sorayukiicommited 2026-05-15 17:57:58 +07:00
Since the LRU is two words, this does not affect the double-word alignment
of SLUB's freelist.
Link: http://lkml.kernel.org/r/20180518194519.3820-10-willy@infradead.org
Change-Id: Ibcb2c34650e8cf4262eb797cbdea0890ff9fc185
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Matthew Wilcoxauthored and Sorayukiicommited 2026-05-15 17:57:58 +07:00
By moving page->private to the fourth word of struct page, we can put the
SLUB counters in the same word as SLAB's s_mem and still do the
cmpxchg_double trick. Now the SLUB counters no longer overlap with the
mapcount or refcount so we can drop the call to page_mapcount_reset() and
simplify set_page_slub_counters() to a single line.
Link: http://lkml.kernel.org/r/20180518194519.3820-6-willy@infradead.org
Change-Id: I4e5cf42b0af8de3f19eda9d16bff9bd1323682f7
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Matthew Wilcoxauthored and Sorayukiicommited 2026-05-15 17:57:58 +07:00
This will allow us to store slub's counters in the same bits as slab's
s_mem. slub now needs to set page->mapping to NULL as it frees the page,
just like slab does.
Link: http://lkml.kernel.org/r/20180518194519.3820-5-willy@infradead.org
Change-Id: I841baf3a3b9a0e90c9baf7b0f99d4efa9c9f801a
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Christoph Lameter <cl@linux.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Matthew Wilcoxauthored and Sorayukiicommited 2026-05-15 17:57:58 +07:00
We're already using a union of many fields here, so stop abusing the
_mapcount and make page_type its own field. That implies renaming some of
the machinery that creates PageBuddy, PageBalloon and PageKmemcg; bring
back the PG_buddy, PG_balloon and PG_kmemcg names.
As suggested by Kirill, make page_type a bitmask. Because it starts out
life as -1 (thanks to sharing the storage with _mapcount), setting a page
flag means clearing the appropriate bit. This gives us space for probably
twenty or so extra bits (depending how paranoid we want to be about
_mapcount underflow).
Link: http://lkml.kernel.org/r/20180518194519.3820-3-willy@infradead.org
Change-Id: I8804ac88e4c2c772df02ae1a3b07e0e87cc5e05e
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Christoph Lameter <cl@linux.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Matthew Wilcoxauthored and Sorayukiicommited 2026-05-15 17:57:58 +07:00
Use new return type vm_fault_t for fault handler in struct
vm_operations_struct. For now, this is just documenting that the
function returns a VM_FAULT value rather than an errno. Once all
instances are converted, vm_fault_t will become a distinct type.
See commit 1c8f422059ae ("mm: change return type to vm_fault_t")
Link: http://lkml.kernel.org/r/20180512063745.GA26866@jordon-HP-15-Notebook-PC
Change-Id: Ib16ec7d9a34c73d98fe673b8ce6e9241ad3255b8
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Joe Perches <joe@perches.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Souptick Joarderauthored and Sorayukiicommited 2026-05-15 17:57:57 +07:00
[ Upstream commit e876ecc67db80dfdb8e237f71e5b43bb88ae549c ]
We are testing network memory accounting in our setup and noticed
inconsistent network memory usage and often unrelated cgroups network
usage correlates with testing workload. On further inspection, it
seems like mem_cgroup_sk_alloc() and cgroup_sk_alloc() are broken in
irq context specially for cgroup v1.
mem_cgroup_sk_alloc() and cgroup_sk_alloc() can be called in irq context
and kind of assumes that this can only happen from sk_clone_lock()
and the source sock object has already associated cgroup. However in
cgroup v1, where network memory accounting is opt-in, the source sock
can be unassociated with any cgroup and the new cloned sock can get
associated with unrelated interrupted cgroup.
Cgroup v2 can also suffer if the source sock object was created by
process in the root cgroup or if sk_alloc() is called in irq context.
The fix is to just do nothing in interrupt.
WARNING: Please note that about half of the TCP sockets are allocated
from the IRQ context, so, memory used by such sockets will not be
accouted by the memcg.
The stack trace of mem_cgroup_sk_alloc() from IRQ-context:
CPU: 70 PID: 12720 Comm: ssh Tainted: 5.6.0-smp-DEV #1
Hardware name: ...
Call Trace:
<IRQ>
dump_stack+0x57/0x75
mem_cgroup_sk_alloc+0xe9/0xf0
sk_clone_lock+0x2a7/0x420
inet_csk_clone_lock+0x1b/0x110
tcp_create_openreq_child+0x23/0x3b0
tcp_v6_syn_recv_sock+0x88/0x730
tcp_check_req+0x429/0x560
tcp_v6_rcv+0x72d/0xa40
ip6_protocol_deliver_rcu+0xc9/0x400
ip6_input+0x44/0xd0
? ip6_protocol_deliver_rcu+0x400/0x400
ip6_rcv_finish+0x71/0x80
ipv6_rcv+0x5b/0xe0
? ip6_sublist_rcv+0x2e0/0x2e0
process_backlog+0x108/0x1e0
net_rx_action+0x26b/0x460
__do_softirq+0x104/0x2a6
do_softirq_own_stack+0x2a/0x40
</IRQ>
do_softirq.part.19+0x40/0x50
__local_bh_enable_ip+0x51/0x60
ip6_finish_output2+0x23d/0x520
? ip6table_mangle_hook+0x55/0x160
__ip6_finish_output+0xa1/0x100
ip6_finish_output+0x30/0xd0
ip6_output+0x73/0x120
? __ip6_finish_output+0x100/0x100
ip6_xmit+0x2e3/0x600
? ipv6_anycast_cleanup+0x50/0x50
? inet6_csk_route_socket+0x136/0x1e0
? skb_free_head+0x1e/0x30
inet6_csk_xmit+0x95/0xf0
__tcp_transmit_skb+0x5b4/0xb20
__tcp_send_ack.part.60+0xa3/0x110
tcp_send_ack+0x1d/0x20
tcp_rcv_state_process+0xe64/0xe80
? tcp_v6_connect+0x5d1/0x5f0
tcp_v6_do_rcv+0x1b1/0x3f0
? tcp_v6_do_rcv+0x1b1/0x3f0
__release_sock+0x7f/0xd0
release_sock+0x30/0xa0
__inet_stream_connect+0x1c3/0x3b0
? prepare_to_wait+0xb0/0xb0
inet_stream_connect+0x3b/0x60
__sys_connect+0x101/0x120
? __sys_getsockopt+0x11b/0x140
__x64_sys_connect+0x1a/0x20
do_syscall_64+0x51/0x200
entry_SYSCALL_64_after_hwframe+0x44/0xa9
The stack trace of mem_cgroup_sk_alloc() from IRQ-context:
Fixes: 2d75807383 ("mm: memcontrol: consolidate cgroup socket tracking")
Fixes: d979a39d72 ("cgroup: duplicate cgroup reference when cloning sockets")
Change-Id: I8872313e1e69d0809cbffdf96549f0dc3edfacda
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Reviewed-by: Roman Gushchin <guro@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Shakeel Buttauthored and Sorayukiicommited 2026-05-15 17:57:44 +07:00
css_task_iter currently always walks all tasks. With the scheduled
cgroup v2 thread support, the iterator would need to handle multiple
types of iteration. As a preparation, add @flags to
css_task_iter_start() and implement CSS_TASK_ITER_PROCS. If the flag
is not specified, it walks all tasks as before. When asserted, the
iterator only walks the group leaders.
For now, the only user of the flag is cgroup v2 "cgroup.procs" file
which no longer needs to skip non-leader tasks in cgroup_procs_next().
Note that cgroup v1 "cgroup.procs" can't use the group leader walk as
v1 "cgroup.procs" doesn't mean "list all thread group leaders in the
cgroup" but "list all thread group id's with any threads in the
cgroup".
While at it, update cgroup_procs_show() to use task_pid_vnr() instead
of task_tgid_vnr(). As the iteration guarantees that the function
only sees group leaders, this doesn't change the output and will allow
sharing the function for thread iteration.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Tejun Heoauthored and Sorayukiicommited 2026-05-15 17:50:36 +07:00
Commits started from ("rcu: Tighten up __call_rcu() rcu_head alignment check") and ended in ("rcutorture: Invoke call_rcu() from timer handler")
Signed-off-by: Yousef Algadri <yusufgadrie@gmail.com>
Signed-off-by: TsingPeng <tsingpeng@foxmail.com>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Yousef Algadriauthored and Sorayukiicommited 2026-05-15 17:49:30 +07:00
This is a backport from Linux 5.2-rc1 of a patch series to greatly enhance vmalloc's performance
especially on embedded systems, plus all of its dependencies that were missing in kernel 4.9.
For all the informations, refer to LKML: https://lkml.org/lkml/2018/10/19/786
Brief informations:
Currently an allocation of the new VA area is done over busy list iteration until a suitable hole
is found between two busy areas. Therefore each new allocation causes the list being grown.
Due to long list and different permissive parameters an allocation can take a long time on
embedded devices(milliseconds).
This patch organizes the vmalloc memory layout into free areas of the VMALLOC_START-VMALLOC_END range.
It uses a red-black tree that keeps blocks sorted by their offsets in pair with linked list
keeping the free space in order of increasing addresses.
Quote Phoronix:
With this patch from Uladzislau Rezki, calling vmalloc() can take up to 67% less time compared
to the behavior on Linux 5.1 and prior, at least with tests done by the developer under QEMU.
Personal tests are showing that the device is more responsive when memory pressure is
high and when huge allocations are to be done, it's also noticeably faster in this case, like
when starting Chrome with more than 100 opened tabs after a system reboot (so, an
uncached complete load of it).
Shameless kanged from:
https://github.com/sonyxperiadev/kernel / Pull Request 2016
Signed-off-by: sweetyicecare <gabrielseedev@outlook.com>
Signed-off-by: Aoihara <veronicadisa6@gmail.com>
Signed-off-by: KangMamles <imzea69@gmail.com>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Angelo G. Del Regnoauthored and Sorayukiicommited 2026-05-15 17:48:25 +07:00
Add a system call to make extended file information available, including
file creation and some attribute flags where available through the
underlying filesystem.
The getattr inode operation is altered to take two additional arguments: a
u32 request_mask and an unsigned int flags that indicate the
synchronisation mode. This change is propagated to the vfs_getattr*()
function.
Functions like vfs_stat() are now inline wrappers around new functions
vfs_statx() and vfs_statx_fd() to reduce stack usage.
========
OVERVIEW
========
The idea was initially proposed as a set of xattrs that could be retrieved
with getxattr(), but the general preference proved to be for a new syscall
with an extended stat structure.
A number of requests were gathered for features to be included. The
following have been included:
(1) Make the fields a consistent size on all arches and make them large.
(2) Spare space, request flags and information flags are provided for
future expansion.
(3) Better support for the y2038 problem [Arnd Bergmann] (tv_sec is an
__s64).
(4) Creation time: The SMB protocol carries the creation time, which could
be exported by Samba, which will in turn help CIFS make use of
FS-Cache as that can be used for coherency data (stx_btime).
This is also specified in NFSv4 as a recommended attribute and could
be exported by NFSD [Steve French].
(5) Lightweight stat: Ask for just those details of interest, and allow a
netfs (such as NFS) to approximate anything not of interest, possibly
without going to the server [Trond Myklebust, Ulrich Drepper, Andreas
Dilger] (AT_STATX_DONT_SYNC).
(6) Heavyweight stat: Force a netfs to go to the server, even if it thinks
its cached attributes are up to date [Trond Myklebust]
(AT_STATX_FORCE_SYNC).
And the following have been left out for future extension:
(7) Data version number: Could be used by userspace NFS servers [Aneesh
Kumar].
Can also be used to modify fill_post_wcc() in NFSD which retrieves
i_version directly, but has just called vfs_getattr(). It could get
it from the kstat struct if it used vfs_xgetattr() instead.
(There's disagreement on the exact semantics of a single field, since
not all filesystems do this the same way).
(8) BSD stat compatibility: Including more fields from the BSD stat such
as creation time (st_btime) and inode generation number (st_gen)
[Jeremy Allison, Bernd Schubert].
(9) Inode generation number: Useful for FUSE and userspace NFS servers
[Bernd Schubert].
(This was asked for but later deemed unnecessary with the
open-by-handle capability available and caused disagreement as to
whether it's a security hole or not).
(10) Extra coherency data may be useful in making backups [Andreas Dilger].
(No particular data were offered, but things like last backup
timestamp, the data version number and the DOS archive bit would come
into this category).
(11) Allow the filesystem to indicate what it can/cannot provide: A
filesystem can now say it doesn't support a standard stat feature if
that isn't available, so if, for instance, inode numbers or UIDs don't
exist or are fabricated locally...
(This requires a separate system call - I have an fsinfo() call idea
for this).
(12) Store a 16-byte volume ID in the superblock that can be returned in
struct xstat [Steve French].
(Deferred to fsinfo).
(13) Include granularity fields in the time data to indicate the
granularity of each of the times (NFSv4 time_delta) [Steve French].
(Deferred to fsinfo).
(14) FS_IOC_GETFLAGS value. These could be translated to BSD's st_flags.
Note that the Linux IOC flags are a mess and filesystems such as Ext4
define flags that aren't in linux/fs.h, so translation in the kernel
may be a necessity (or, possibly, we provide the filesystem type too).
(Some attributes are made available in stx_attributes, but the general
feeling was that the IOC flags were to ext[234]-specific and shouldn't
be exposed through statx this way).
(15) Mask of features available on file (eg: ACLs, seclabel) [Brad Boyer,
Michael Kerrisk].
(Deferred, probably to fsinfo. Finding out if there's an ACL or
seclabal might require extra filesystem operations).
(16) Femtosecond-resolution timestamps [Dave Chinner].
(A __reserved field has been left in the statx_timestamp struct for
this - if there proves to be a need).
(17) A set multiple attributes syscall to go with this.
===============
NEW SYSTEM CALL
===============
The new system call is:
int ret = statx(int dfd,
const char *filename,
unsigned int flags,
unsigned int mask,
struct statx *buffer);
The dfd, filename and flags parameters indicate the file to query, in a
similar way to fstatat(). There is no equivalent of lstat() as that can be
emulated with statx() by passing AT_SYMLINK_NOFOLLOW in flags. There is
also no equivalent of fstat() as that can be emulated by passing a NULL
filename to statx() with the fd of interest in dfd.
Whether or not statx() synchronises the attributes with the backing store
can be controlled by OR'ing a value into the flags argument (this typically
only affects network filesystems):
(1) AT_STATX_SYNC_AS_STAT tells statx() to behave as stat() does in this
respect.
(2) AT_STATX_FORCE_SYNC will require a network filesystem to synchronise
its attributes with the server - which might require data writeback to
occur to get the timestamps correct.
(3) AT_STATX_DONT_SYNC will suppress synchronisation with the server in a
network filesystem. The resulting values should be considered
approximate.
mask is a bitmask indicating the fields in struct statx that are of
interest to the caller. The user should set this to STATX_BASIC_STATS to
get the basic set returned by stat(). It should be noted that asking for
more information may entail extra I/O operations.
buffer points to the destination for the data. This must be 256 bytes in
size.
======================
MAIN ATTRIBUTES RECORD
======================
The following structures are defined in which to return the main attribute
set:
struct statx_timestamp {
__s64 tv_sec;
__s32 tv_nsec;
__s32 __reserved;
};
struct statx {
__u32 stx_mask;
__u32 stx_blksize;
__u64 stx_attributes;
__u32 stx_nlink;
__u32 stx_uid;
__u32 stx_gid;
__u16 stx_mode;
__u16 __spare0[1];
__u64 stx_ino;
__u64 stx_size;
__u64 stx_blocks;
__u64 __spare1[1];
struct statx_timestamp stx_atime;
struct statx_timestamp stx_btime;
struct statx_timestamp stx_ctime;
struct statx_timestamp stx_mtime;
__u32 stx_rdev_major;
__u32 stx_rdev_minor;
__u32 stx_dev_major;
__u32 stx_dev_minor;
__u64 __spare2[14];
};
The defined bits in request_mask and stx_mask are:
STATX_TYPE Want/got stx_mode & S_IFMT
STATX_MODE Want/got stx_mode & ~S_IFMT
STATX_NLINK Want/got stx_nlink
STATX_UID Want/got stx_uid
STATX_GID Want/got stx_gid
STATX_ATIME Want/got stx_atime{,_ns}
STATX_MTIME Want/got stx_mtime{,_ns}
STATX_CTIME Want/got stx_ctime{,_ns}
STATX_INO Want/got stx_ino
STATX_SIZE Want/got stx_size
STATX_BLOCKS Want/got stx_blocks
STATX_BASIC_STATS [The stuff in the normal stat struct]
STATX_BTIME Want/got stx_btime{,_ns}
STATX_ALL [All currently available stuff]
stx_btime is the file creation time, stx_mask is a bitmask indicating the
data provided and __spares*[] are where as-yet undefined fields can be
placed.
Time fields are structures with separate seconds and nanoseconds fields
plus a reserved field in case we want to add even finer resolution. Note
that times will be negative if before 1970; in such a case, the nanosecond
fields will also be negative if not zero.
The bits defined in the stx_attributes field convey information about a
file, how it is accessed, where it is and what it does. The following
attributes map to FS_*_FL flags and are the same numerical value:
STATX_ATTR_COMPRESSED File is compressed by the fs
STATX_ATTR_IMMUTABLE File is marked immutable
STATX_ATTR_APPEND File is append-only
STATX_ATTR_NODUMP File is not to be dumped
STATX_ATTR_ENCRYPTED File requires key to decrypt in fs
Within the kernel, the supported flags are listed by:
KSTAT_ATTR_FS_IOC_FLAGS
[Are any other IOC flags of sufficient general interest to be exposed
through this interface?]
New flags include:
STATX_ATTR_AUTOMOUNT Object is an automount trigger
These are for the use of GUI tools that might want to mark files specially,
depending on what they are.
Fields in struct statx come in a number of classes:
(0) stx_dev_*, stx_blksize.
These are local system information and are always available.
(1) stx_mode, stx_nlinks, stx_uid, stx_gid, stx_[amc]time, stx_ino,
stx_size, stx_blocks.
These will be returned whether the caller asks for them or not. The
corresponding bits in stx_mask will be set to indicate whether they
actually have valid values.
If the caller didn't ask for them, then they may be approximated. For
example, NFS won't waste any time updating them from the server,
unless as a byproduct of updating something requested.
If the values don't actually exist for the underlying object (such as
UID or GID on a DOS file), then the bit won't be set in the stx_mask,
even if the caller asked for the value. In such a case, the returned
value will be a fabrication.
Note that there are instances where the type might not be valid, for
instance Windows reparse points.
(2) stx_rdev_*.
This will be set only if stx_mode indicates we're looking at a
blockdev or a chardev, otherwise will be 0.
(3) stx_btime.
Similar to (1), except this will be set to 0 if it doesn't exist.
=======
TESTING
=======
The following test program can be used to test the statx system call:
samples/statx/test-statx.c
Just compile and run, passing it paths to the files you want to examine.
The file is built automatically if CONFIG_SAMPLES is enabled.
Here's some example output. Firstly, an NFS directory that crosses to
another FSID. Note that the AUTOMOUNT attribute is set because transiting
this directory will cause d_automount to be invoked by the VFS.
[root@andromeda ~]# /tmp/test-statx -A /warthog/data
statx(/warthog/data) = 0
results=7ff
Size: 4096 Blocks: 8 IO Block: 1048576 directory
Device: 00:26 Inode: 1703937 Links: 125
Access: (3777/drwxrwxrwx) Uid: 0 Gid: 4041
Access: 2016-11-24 09:02:12.219699527+0000
Modify: 2016-11-17 10:44:36.225653653+0000
Change: 2016-11-17 10:44:36.225653653+0000
Attributes: 0000000000001000 (-------- -------- -------- -------- -------- -------- ---m---- --------)
Secondly, the result of automounting on that directory.
[root@andromeda ~]# /tmp/test-statx /warthog/data
statx(/warthog/data) = 0
results=7ff
Size: 4096 Blocks: 8 IO Block: 1048576 directory
Device: 00:27 Inode: 2 Links: 125
Access: (3777/drwxrwxrwx) Uid: 0 Gid: 4041
Access: 2016-11-24 09:02:12.219699527+0000
Modify: 2016-11-17 10:44:36.225653653+0000
Change: 2016-11-17 10:44:36.225653653+0000
Change-Id: I345d9bd6cf1947ac3f4dcb3db761088c36028aeb
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
David Howellsauthored and Nolen Johnsoncommited 2025-07-10 14:15:39 -04:00
-----BEGIN PGP SIGNATURE-----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=+wRq
-----END PGP SIGNATURE-----
Merge 4.9.337 into android-4.9-q
Changes in 4.9.337
mm/khugepaged: fix GUP-fast interaction by sending IPI
mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths
block: unhash blkdev part inode when the part is deleted
ASoC: ops: Check bounds for second channel in snd_soc_put_volsw_sx()
can: sja1000: fix size of OCR_MODE_MASK define
ASoC: ops: Correct bounds check for second channel on SX controls
udf: Discard preallocation before extending file with a hole
udf: Drop unused arguments of udf_delete_aext()
udf: Fix preallocation discarding at indirect extent boundary
udf: Do not bother looking for prealloc extents if i_lenExtents matches i_size
udf: Fix extending file within last block
usb: gadget: uvc: Prevent buffer overflow in setup handler
USB: serial: cp210x: add Kamstrup RF sniffer PIDs
Bluetooth: L2CAP: Fix u8 overflow
net: loopback: use NET_NAME_PREDICTABLE for name_assign_type
drivers: soc: ti: knav_qmss_queue: Mark knav_acc_firmwares as static
arm: dts: spear600: Fix clcd interrupt
soc: ti: smartreflex: Fix PM disable depth imbalance in omap_sr_probe
ARM: dts: dove: Fix assigned-addresses for every PCIe Root Port
ARM: dts: armada-370: Fix assigned-addresses for every PCIe Root Port
ARM: dts: armada-xp: Fix assigned-addresses for every PCIe Root Port
ARM: dts: armada-375: Fix assigned-addresses for every PCIe Root Port
ARM: dts: armada-38x: Fix assigned-addresses for every PCIe Root Port
ARM: dts: armada-39x: Fix assigned-addresses for every PCIe Root Port
ARM: mmp: fix timer_read delay
pstore: Avoid kcore oops by vmap()ing with VM_IOREMAP
cpuidle: dt: Return the correct numbers of parsed idle states
alpha: fix syscall entry in !AUDUT_SYSCALL case
PM: hibernate: Fix mistake in kerneldoc comment
fs: don't audit the capability check in simple_xattr_list()
perf: Fix possible memleak in pmu_dev_alloc()
timerqueue: Use rb_entry_safe() in timerqueue_getnext()
ocfs2: fix memory leak in ocfs2_stack_glue_init()
MIPS: vpe-mt: fix possible memory leak while module exiting
MIPS: vpe-cmp: fix possible memory leak while module exiting
PNP: fix name memory leak in pnp_alloc_dev()
irqchip: gic-pm: Use pm_runtime_resume_and_get() in gic_probe()
libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value
lib/notifier-error-inject: fix error when writing -errno to debugfs file
rapidio: fix possible name leaks when rio_add_device() fails
rapidio: rio: fix possible name leak in rio_register_mport()
ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()
uprobes/x86: Allow to probe a NOP instruction with 0x66 prefix
x86/xen: Fix memory leak in xen_init_lock_cpu()
MIPS: BCM63xx: Add check for NULL for clk in clk_enable
fs: sysv: Fix sysv_nblocks() returns wrong value
rapidio: fix possible UAF when kfifo_alloc() fails
eventfd: change int to __u64 in eventfd_signal() ifndef CONFIG_EVENTFD
hfs: Fix OOB Write in hfs_asc2mac
rapidio: devices: fix missing put_device in mport_cdev_open
wifi: ath9k: hif_usb: fix memory leak of urbs in ath9k_hif_usb_dealloc_tx_urbs()
wifi: ath9k: hif_usb: Fix use-after-free in ath9k_hif_usb_reg_in_cb()
media: i2c: ad5820: Fix error path
media: vivid: fix compose size exceed boundary
mtd: Fix device name leak when register device failed in add_mtd_device()
ASoC: pxa: fix null-pointer dereference in filter()
regulator: core: fix unbalanced of node refcount in regulator_dev_lookup()
ima: Fix misuse of dereference of pointer in template_desc_init_fields()
wifi: ath10k: Fix return value in ath10k_pci_init()
mtd: lpddr2_nvm: Fix possible null-ptr-deref
Input: elants_i2c - properly handle the reset GPIO when power is off
media: solo6x10: fix possible memory leak in solo_sysfs_init()
media: platform: exynos4-is: Fix error handling in fimc_md_init()
HID: hid-sensor-custom: set fixed size for custom attributes
ALSA: seq: fix undefined behavior in bit shift for SNDRV_SEQ_FILTER_USE_EVENT
clk: rockchip: Fix memory leak in rockchip_clk_register_pll()
mtd: maps: pxa2xx-flash: fix memory leak in probe
media: imon: fix a race condition in send_packet()
pinctrl: pinconf-generic: add missing of_node_put()
media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()
NFSv4.2: Fix a memory stomp in decode_attr_security_label
NFSv4: Fix a deadlock between nfs4_open_recover_helper() and delegreturn
ALSA: asihpi: fix missing pci_disable_device()
drm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios()
drm/amdgpu: Fix PCI device refcount leak in amdgpu_atrm_get_bios()
ASoC: pcm512x: Fix PM disable depth imbalance in pcm512x_probe
bonding: uninitialized variable in bond_miimon_inspect()
regulator: core: fix module refcount leak in set_supply()
media: saa7164: fix missing pci_disable_device()
ALSA: mts64: fix possible null-ptr-defer in snd_mts64_interrupt
SUNRPC: Fix missing release socket in rpc_sockname()
mmc: moxart: fix return value check of mmc_add_host()
mmc: mxcmmc: fix return value check of mmc_add_host()
mmc: rtsx_usb_sdmmc: fix return value check of mmc_add_host()
mmc: toshsd: fix return value check of mmc_add_host()
mmc: vub300: fix return value check of mmc_add_host()
mmc: via-sdmmc: fix return value check of mmc_add_host()
mmc: wbsd: fix return value check of mmc_add_host()
mmc: mmci: fix return value check of mmc_add_host()
media: c8sectpfe: Add of_node_put() when breaking out of loop
media: coda: Add check for dcoda_iram_alloc
media: coda: Add check for kmalloc
wifi: rtl8xxxu: Add __packed to struct rtl8723bu_c2h
wifi: brcmfmac: Fix error return code in brcmf_sdio_download_firmware()
blktrace: Fix output non-blktrace event when blk_classic option enabled
net: vmw_vsock: vmci: Check memcpy_from_msg()
net: defxx: Fix missing err handling in dfx_init()
drivers: net: qlcnic: Fix potential memory leak in qlcnic_sriov_init()
ethernet: s2io: don't call dev_kfree_skb() under spin_lock_irqsave()
net: farsync: Fix kmemleak when rmmods farsync
net/tunnel: wait until all sk_user_data reader finish before releasing the sock
net: apple: mace: don't call dev_kfree_skb() under spin_lock_irqsave()
net: apple: bmac: don't call dev_kfree_skb() under spin_lock_irqsave()
net: emaclite: don't call dev_kfree_skb() under spin_lock_irqsave()
net: ethernet: dnet: don't call dev_kfree_skb() under spin_lock_irqsave()
hamradio: don't call dev_kfree_skb() under spin_lock_irqsave()
net: amd: lance: don't call dev_kfree_skb() under spin_lock_irqsave()
ntb_netdev: Use dev_kfree_skb_any() in interrupt context
Bluetooth: btusb: don't call kfree_skb() under spin_lock_irqsave()
Bluetooth: hci_qca: don't call kfree_skb() under spin_lock_irqsave()
Bluetooth: hci_h5: don't call kfree_skb() under spin_lock_irqsave()
Bluetooth: hci_bcsp: don't call kfree_skb() under spin_lock_irqsave()
Bluetooth: hci_core: don't call kfree_skb() under spin_lock_irqsave()
stmmac: fix potential division by 0
scsi: hpsa: Fix error handling in hpsa_add_sas_host()
scsi: hpsa: Fix possible memory leak in hpsa_add_sas_device()
scsi: fcoe: Fix possible name leak when device_register() fails
scsi: ipr: Fix WARNING in ipr_init()
scsi: fcoe: Fix transport not deattached when fcoe_if_init() fails
scsi: snic: Fix possible UAF in snic_tgt_create()
orangefs: Fix sysfs not cleanup when dev init failed
crypto: img-hash - Fix variable dereferenced before check 'hdev->req'
hwrng: amd - Fix PCI device refcount leak
hwrng: geode - Fix PCI device refcount leak
IB/IPoIB: Fix queue count inconsistency for PKEY child interfaces
drivers: dio: fix possible memory leak in dio_init()
vfio: platform: Do not pass return buffer to ACPI _RST method
uio: uio_dmem_genirq: Fix missing unlock in irq configuration
uio: uio_dmem_genirq: Fix deadlock between irq config and handling
usb: fotg210-udc: Fix ages old endianness issues
staging: vme_user: Fix possible UAF in tsi148_dma_list_add
serial: amba-pl011: avoid SBSA UART accessing DMACR register
serial: pch: Fix PCI device refcount leak in pch_request_dma()
serial: sunsab: Fix error handling in sunsab_init()
misc: tifm: fix possible memory leak in tifm_7xx1_switch_media()
misc: sgi-gru: fix use-after-free error in gru_set_context_option, gru_fault and gru_handle_user_call_os
cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter()
cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter()
drivers: mcb: fix resource leak in mcb_probe()
mcb: mcb-parse: fix error handing in chameleon_parse_gdd()
chardev: fix error handling in cdev_device_add()
i2c: pxa-pci: fix missing pci_disable_device() on error in ce4100_i2c_probe
staging: rtl8192u: Fix use after free in ieee80211_rx()
staging: rtl8192e: Fix potential use-after-free in rtllib_rx_Monitor()
vme: Fix error not catched in fake_init()
i2c: ismt: Fix an out-of-bounds bug in ismt_access()
usb: storage: Add check for kcalloc
fbdev: ssd1307fb: Drop optional dependency
fbdev: pm2fb: fix missing pci_disable_device()
fbdev: via: Fix error in via_core_init()
fbdev: vermilion: decrease reference count in error path
fbdev: uvesafb: Fixes an error handling path in uvesafb_probe()
HSI: omap_ssi_core: fix unbalanced pm_runtime_disable()
HSI: omap_ssi_core: fix possible memory leak in ssi_probe()
power: supply: fix residue sysfs file in error handle route of __power_supply_register()
HSI: omap_ssi_core: Fix error handling in ssi_init()
include/uapi/linux/swab: Fix potentially missing __always_inline
rtc: snvs: Allow a time difference on clock register read
iommu/fsl_pamu: Fix resource leak in fsl_pamu_probe()
macintosh: fix possible memory leak in macio_add_one_device()
macintosh/macio-adb: check the return value of ioremap()
powerpc/52xx: Fix a resource leak in an error handling path
powerpc/perf: callchain validate kernel stack pointer bounds
powerpc/83xx/mpc832x_rdb: call platform_device_put() in error case in of_fsl_spi_probe()
powerpc/hv-gpci: Fix hv_gpci event list
selftests/powerpc: Fix resource leaks
rtc: st-lpc: Add missing clk_disable_unprepare in st_rtc_probe()
nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure
mISDN: hfcsusb: don't call dev_kfree_skb/kfree_skb() under spin_lock_irqsave()
mISDN: hfcpci: don't call dev_kfree_skb/kfree_skb() under spin_lock_irqsave()
mISDN: hfcmulti: don't call dev_kfree_skb/kfree_skb() under spin_lock_irqsave()
nfc: pn533: Clear nfc_target before being used
r6040: Fix kmemleak in probe and remove
openvswitch: Fix flow lookup to use unmasked key
skbuff: Account for tail adjustment during pull operations
net_sched: reject TCF_EM_SIMPLE case for complex ematch module
myri10ge: Fix an error handling path in myri10ge_probe()
net: stream: purge sk_error_queue in sk_stream_kill_queues()
binfmt_misc: fix shift-out-of-bounds in check_special_flags
fs: jfs: fix shift-out-of-bounds in dbAllocAG
udf: Avoid double brelse() in udf_rename()
fs: jfs: fix shift-out-of-bounds in dbDiscardAG
ACPICA: Fix error code path in acpi_ds_call_control_method()
nilfs2: fix shift-out-of-bounds/overflow in nilfs_sb2_bad_offset()
acct: fix potential integer overflow in encode_comp_t()
hfs: fix OOB Read in __hfs_brec_find
wifi: ath9k: verify the expected usb_endpoints are present
wifi: ar5523: Fix use-after-free on ar5523_cmd() timed out
ipmi: fix memleak when unload ipmi driver
net: ethernet: ti: Fix return type of netcp_ndo_start_xmit()
hamradio: baycom_epp: Fix return type of baycom_send_packet()
wifi: brcmfmac: Fix potential shift-out-of-bounds in brcmf_fw_alloc_request()
igb: Do not free q_vector unless new one was allocated
s390/ctcm: Fix return type of ctc{mp,}m_tx()
s390/netiucv: Fix return type of netiucv_tx()
s390/lcs: Fix return type of lcs_start_xmit()
drm/sti: Use drm_mode_copy()
md/raid1: stop mdx_raid1 thread when raid1 array run failed
mrp: introduce active flags to prevent UAF when applicant uninit
ppp: associate skb with a device at tx
media: dvb-frontends: fix leak of memory fw
media: dvb-usb: fix memory leak in dvb_usb_adapter_init()
blk-mq: fix possible memleak when register 'hctx' failed
mmc: f-sdh30: Add quirks for broken timeout clock capability
media: si470x: Fix use-after-free in si470x_int_in_callback()
clk: st: Fix memory leak in st_of_quadfs_setup()
drm/fsl-dcu: Fix return type of fsl_dcu_drm_connector_mode_valid()
drm/sti: Fix return type of sti_{dvo,hda,hdmi}_connector_mode_valid()
orangefs: Fix kmemleak in orangefs_prepare_debugfs_help_string()
ASoC: mediatek: mt8173-rt5650-rt5514: fix refcount leak in mt8173_rt5650_rt5514_dev_probe()
ASoC: wm8994: Fix potential deadlock
ASoC: rockchip: spdif: Add missing clk_disable_unprepare() in rk_spdif_runtime_resume()
ASoC: rt5670: Remove unbalanced pm_runtime_put()
HID: wacom: Ensure bootloader PID is usable in hidraw mode
reiserfs: Add missing calls to reiserfs_security_free()
iio: adc: ad_sigma_delta: do not use internal iio_dev lock
gcov: add support for checksum field
powerpc/rtas: avoid scheduling in rtas_os_term()
HID: plantronics: Additional PIDs for double volume key presses quirk
hfsplus: fix bug causing custom uid and gid being unable to be assigned with mount
ALSA: line6: correct midi status byte when receiving data from podxt
ALSA: line6: fix stack overflow in line6_midi_transmit
pnode: terminate at peers of source
md: fix a crash in mempool_free
mmc: vub300: fix warning - do not call blocking ops when !TASK_RUNNING
media: stv0288: use explicitly signed char
ktest.pl minconfig: Unset configs instead of just removing them
ARM: ux500: do not directly dereference __iomem
dm cache: Fix ABBA deadlock between shrink_slab and dm_cache_metadata_abort
dm thin: Use last transaction's pmd->root when commit failed
dm thin: Fix UAF in run_timer_softirq()
dm cache: Fix UAF in destroy()
dm cache: set needs_check flag after aborting metadata
tracing: Fix infinite loop in tracing_read_pipe on overflowed print_trace_line
ARM: 9256/1: NWFPE: avoid compiler-generated __aeabi_uldivmod
media: dvb-core: Fix double free in dvb_register_device()
cifs: fix confusing debug message
PCI/sysfs: Fix double free in error path
crypto: n2 - add missing hash statesize
iommu/amd: Fix ivrs_acpihid cmdline parsing code
parisc: led: Fix potential null-ptr-deref in start_task()
device_cgroup: Roll back to original exceptions after copy failure
drm/connector: send hotplug uevent on connector cleanup
drm/vmwgfx: Validate the box size for the snooped cursor
ext4: add inode table check in __ext4_get_inode_loc to aovid possible infinite loop
ext4: fix undefined behavior in bit shift for ext4_check_flag_values
ext4: fix bug_on in __es_tree_search caused by bad boot loader inode
ext4: init quota for 'old.inode' in 'ext4_rename'
ext4: fix error code return to user-space in ext4_get_branch()
ext4: avoid BUG_ON when creating xattrs
ext4: initialize quota before expanding inode in setproject ioctl
Linux 4.9.337
Change-Id: I923e3fef499ae1688b25c70a1a805b55a9f4f027
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
commit f268f6cf875f3220afc77bdd0bf1bb136eb54db9 upstream.
Any codepath that zaps page table entries must invoke MMU notifiers to
ensure that secondary MMUs (like KVM) don't keep accessing pages which
aren't mapped anymore. Secondary MMUs don't hold their own references to
pages that are mirrored over, so failing to notify them can lead to page
use-after-free.
I'm marking this as addressing an issue introduced in commit f3f0e1d215
("khugepaged: add support of collapse for tmpfs/shmem pages"), but most of
the security impact of this only came in commit 27e1f8273113 ("khugepaged:
enable collapse pmd for pte-mapped THP"), which actually omitted flushes
for the removal of present PTEs, not just for the removal of empty page
tables.
Link: https://lkml.kernel.org/r/20221129154730.2274278-3-jannh@google.com
Link: https://lkml.kernel.org/r/20221128180252.1684965-3-jannh@google.com
Link: https://lkml.kernel.org/r/20221125213714.4115729-3-jannh@google.com
Fixes: f3f0e1d215 ("khugepaged: add support of collapse for tmpfs/shmem pages")
Signed-off-by: Jann Horn <jannh@google.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[manual backport: this code was refactored from two copies into a common
helper between 5.15 and 6.0;
pmd collapse for PTE-mapped THP was only added in 5.4;
MMU notifier API changed between 4.19 and 5.4]
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jann Hornauthored and Greg Kroah-Hartmancommited 2023-01-07 12:07:10 +01:00
commit 2ba99c5e08812494bc57f319fb562f527d9bacd8 upstream.
Since commit 70cbc3cc78a99 ("mm: gup: fix the fast GUP race against THP
collapse"), the lockless_pages_from_mm() fastpath rechecks the pmd_t to
ensure that the page table was not removed by khugepaged in between.
However, lockless_pages_from_mm() still requires that the page table is
not concurrently freed. Fix it by sending IPIs (if the architecture uses
semi-RCU-style page table freeing) before freeing/reusing page tables.
Link: https://lkml.kernel.org/r/20221129154730.2274278-2-jannh@google.com
Link: https://lkml.kernel.org/r/20221128180252.1684965-2-jannh@google.com
Link: https://lkml.kernel.org/r/20221125213714.4115729-2-jannh@google.com
Fixes: ba76149f47 ("thp: khugepaged")
Signed-off-by: Jann Horn <jannh@google.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[manual backport: two of the three places in khugepaged that can free
ptes were refactored into a common helper between 5.15 and 6.0;
TLB flushing was refactored between 5.4 and 5.10;
TLB flushing was refactored between 4.19 and 5.4;
pmd collapse for PTE-mapped THP was only added in 5.4;
ugly hack for s390 in <=4.19 and arm]
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jann Hornauthored and Greg Kroah-Hartmancommited 2023-01-07 12:07:10 +01:00
* common/android-4.9-q:
Linux 4.9.335
v4l2: don't fall back to follow_pfn() if pin_user_pages_fast() fails
proc: proc_skip_spaces() shouldn't think it is working on C strings
proc: avoid integer type confusion in get_proc_long
x86/ioremap: Fix page aligned size calculation in __ioremap_caller()
Bluetooth: L2CAP: Fix accepting connection request for invalid SPSM
x86/pm: Add enumeration check before spec MSRs save/restore setup
x86/tsx: Add a feature bit for TSX control MSR support
Revert "fbdev: fb_pm2fb: Avoid potential divide by zero error"
tcp/udp: Fix memory leak in ipv6_renew_options().
iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init()
pinctrl: single: Fix potential division by zero
ASoC: ops: Fix bounds check for _sx controls
arm64: errata: Fix KVM Spectre-v2 mitigation selection for Cortex-A57/A72
arm64: Fix panic() when Spectre-v2 causes Spectre-BHB to re-allocate KVM vectors
nilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry()
tools/vm/slabinfo-gnuplot: use "grep -E" instead of "egrep"
btrfs: qgroup: fix sleep from invalid context bug in btrfs_qgroup_inherit()
hwmon: (coretemp) fix pci device refcount leak in nv1a_ram_new()
hwmon: (coretemp) Check for null before removing sysfs attrs
net: ethernet: renesas: ravb: Fix promiscuous mode after system resumed
packet: do not set TP_STATUS_CSUM_VALID on CHECKSUM_COMPLETE
net: hsr: Fix potential use-after-free
net/9p: Fix a potential socket leak in p9_socket_open
net: net_netdev: Fix error handling in ntb_netdev_init_module()
net: phy: fix null-ptr-deref while probe() failed
qlcnic: fix sleep-in-atomic-context bugs caused by msleep
can: cc770: cc770_isa_probe(): add missing free_cc770dev()
can: sja1000_isa: sja1000_isa_probe(): add missing free_sja1000dev()
net/mlx5: Fix uninitialized variable bug in outlen_write()
hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails
hwmon: (i5500_temp) fix missing pci_disable_device()
iio: health: afe4404: Fix oob read in afe4404_[read|write]_raw
iio: health: afe4403: Fix oob read in afe4403_read_raw
drm/amdgpu: always register an MMU notifier for userptr
net: usb: qmi_wwan: add Telit 0x103a composition
tcp: configurable source port perturb table size
platform/x86: asus-wmi: add missing pci_dev_put() in asus_wmi_set_xusb2pr()
xen/platform-pci: add missing free_irq() in error path
serial: 8250: 8250_omap: Avoid RS485 RTS glitch on ->set_termios()
nilfs2: fix nilfs_sufile_mark_dirty() not set segment usage as dirty
nios2: add FORCE for vmlinuz.gz
kconfig: display recursive dependency resolution hint just once
iio: core: Fix entry not deleted when iio_register_sw_trigger_type() fails
iio: light: apds9960: fix wrong register for gesture gain
s390/crashdump: fix TOD programmable field size
net: thunderx: Fix the ACPI memory leak
nfc: st-nci: fix memory leaks in EVT_TRANSACTION
nfc: st-nci: fix incorrect validating logic in EVT_TRANSACTION
NFC: nci: fix memory leak in nci_rx_data_packet()
xfrm: Fix ignored return value in xfrm6_init()
net/qla3xxx: fix potential memleak in ql3xxx_send()
net/mlx4: Check retval of mlx4_bitmap_init
ARM: mxs: fix memory leak in mxs_machine_init()
9p/fd: fix issue of list_del corruption in p9_fd_cancel()
net: pch_gbe: fix potential memleak in pch_gbe_tx_queue()
nfc/nci: fix race with opening and closing
ARM: dts: at91: sam9g20ek: enable udc vbus gpio pinctrl
bus: sunxi-rsb: Support atomic transfers
af_key: Fix send_acquire race with pfkey_register
MIPS: pic32: treat port as signed integer
wifi: mac80211: Fix ack frame idr leak when mesh has no route
audit: fix undefined behavior in bit shift for AUDIT_BIT
wifi: mac80211_hwsim: fix debugfs attribute ps with rc table support
Linux 4.9.334
ntfs: check overflow when iterating ATTR_RECORDs
ntfs: fix out-of-bounds read in ntfs_attr_find()
ntfs: fix use-after-free in ntfs_attr_find()
mm: fs: initialize fsdata passed to write_begin/write_end interface
9p/trans_fd: always use O_NONBLOCK read/write
gfs2: Switch from strlcpy to strscpy
gfs2: Check sb_bsize_shift after reading superblock
9p: trans_fd/p9_conn_cancel: drop client lock earlier
kcm: avoid potential race in kcm_tx_work
tcp: cdg: allow tcp_cdg_release() to be called multiple times
serial: 8250: Flush DMA Rx on RLSI
nilfs2: fix use-after-free bug of ns_writer on remount
misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram()
mmc: core: properly select voltage range without power cycle
serial: 8250_lpss: Configure DMA also w/o DMA filter
serial: 8250: Fall back to non-DMA Rx if IIR_RDI occurs
dm ioctl: fix misbehavior if list_versions races with module loading
iio: pressure: ms5611: changed hardcoded SPI speed to value limited
iio: trigger: sysfs: fix possible memory leak in iio_sysfs_trig_init()
iio: adc: at91_adc: fix possible memory leak in at91_adc_allocate_trigger()
usb: chipidea: fix deadlock in ci_otg_del_timer
usb: add NO_LPM quirk for Realforce 87U Keyboard
USB: serial: option: add Fibocom FM160 0x0111 composition
USB: serial: option: add u-blox LARA-L6 modem
USB: serial: option: add u-blox LARA-R6 00B modem
USB: serial: option: remove old LARA-R6 PID
USB: serial: option: add Sierra Wireless EM9191
ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()
ring_buffer: Do not deactivate non-existant pages
ftrace: Optimize the allocation for mcount entries
ftrace: Fix the possible incorrect kernel message
cifs: Fix wrong return value checking when GETFLAGS
net/x25: Fix skb leak in x25_lapb_receive_frame()
xen/pcpu: fix possible memory leak in register_pcpu()
net: caif: fix double disconnect client in chnl_net_open()
mISDN: fix misuse of put_device() in mISDN_register_device()
mISDN: fix possible memory leak in mISDN_dsp_element_register()
pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map
parport_pc: Avoid FIFO port location truncation
ASoC: soc-utils: Remove __exit for snd_soc_util_exit()
tty: n_gsm: fix sleep-in-atomic-context bug in gsm_control_send
serial: 8250: omap: Flush PM QOS work on remove
serial: 8250_omap: remove wait loop from Errata i202 workaround
ASoC: core: Fix use-after-free in snd_soc_exit()
Bluetooth: L2CAP: Fix l2cap_global_chan_by_psm
drm/imx: imx-tve: Fix return type of imx_tve_connector_mode_valid
x86/cpu: Restore AMD's DE_CFG MSR after resume
dmaengine: at_hdmac: Check return code of dma_async_device_register
dmaengine: at_hdmac: Fix impossible condition
dmaengine: at_hdmac: Don't allow CPU to reorder channel enable
dmaengine: at_hdmac: Fix completion of unissued descriptor in case of errors
dmaengine: at_hdmac: Don't start transactions at tx_submit level
dmaengine: at_hdmac: Fix at_lli struct definition
cert host tools: Stop complaining about deprecated OpenSSL functions
udf: Fix a slab-out-of-bounds write bug in udf_find_entry()
btrfs: selftests: fix wrong error check in btrfs_free_dummy_root()
platform/x86: hp_wmi: Fix rfkill causing soft blocked wifi
nilfs2: fix deadlock in nilfs_count_free_blocks()
ALSA: usb-audio: Add quirk entry for M-Audio Micro
ALSA: hda: fix potential memleak in 'add_widget_node'
net: macvlan: fix memory leaks of macvlan_common_newlink
net: mv643xx_eth: disable napi when init rxq or txq failed in mv643xx_eth_open()
ethernet: s2io: disable napi when start nic failed in s2io_card_up()
net: cxgb3_main: disable napi when bind qsets failed in cxgb_up()
drivers: net: xgene: disable napi when register irq failed in xgene_enet_open()
dmaengine: mv_xor_v2: Fix a resource leak in mv_xor_v2_remove()
tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header
ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network
hamradio: fix issue of dev reference count leakage in bpq_device_event()
net: lapbether: fix issue of dev reference count leakage in lapbeth_device_event()
capabilities: fix undefined behavior in bit shift for CAP_TO_MASK
net: fman: Unregister ethernet device on removal
bnxt_en: fix potentially incorrect return value for ndo_rx_flow_steer
net: gso: fix panic on frag_list with mixed head alloc types
HID: hyperv: fix possible memory leak in mousevsc_probe()
Linux 4.9.333
wifi: brcmfmac: Fix potential buffer overflow in brcmf_fweh_event_worker()
KVM: x86: emulator: update the emulation mode after CR0 write
KVM: x86: emulator: introduce emulator_recalc_and_set_mode
KVM: x86: emulator: em_sysexit should update ctxt->mode
KVM: x86: Mask off reserved bits in CPUID.80000008H
ext4: fix warning in 'ext4_da_release_space'
parisc: Export iosapic_serial_irq() symbol for serial port driver
parisc: Make 8250_gsc driver dependend on CONFIG_PARISC
ALSA: usb-audio: Add quirks for MacroSilicon MS2100/MS2106 devices
btrfs: fix type of parameter generation in btrfs_get_dentry
Bluetooth: L2CAP: Fix attempting to access uninitialized memory
i2c: xiic: Add platform module alias
media: dvb-frontends/drxk: initialize err to 0
media: s5p_cec: limit msg.len to CEC_MAX_MSG_SIZE
net: mdio: fix undefined behavior in bit shift for __mdiobus_register
Bluetooth: L2CAP: fix use-after-free in l2cap_conn_del()
Bluetooth: L2CAP: Fix use-after-free caused by l2cap_reassemble_sdu
btrfs: fix ulist leaks in error paths of qgroup self tests
isdn: mISDN: netjet: fix wrong check of device registration
mISDN: fix possible memory leak in mISDN_register_device()
rose: Fix NULL pointer dereference in rose_send_frame()
ipvs: use explicitly signed chars
net: sched: Fix use after free in red_enqueue()
ata: pata_legacy: fix pdc20230_set_piomode()
net: fec: fix improper use of NETDEV_TX_BUSY
nfc: nfcmrvl: Fix potential memory leak in nfcmrvl_i2c_nci_send()
nfc: s3fwrn5: Fix potential memory leak in s3fwrn5_nci_send()
nfs4: Fix kmemleak when allocate slot failed
NFSv4.1: We must always send RECLAIM_COMPLETE after a reboot
NFSv4.1: Handle RECLAIM_COMPLETE trunking errors
Change-Id: Ie30850b718c1347e040c5ef46ee50f1b81fe4fc6
commit 6647e76ab623b2b3fb2efe03a86e9c9046c52c33 upstream.
The V4L2_MEMORY_USERPTR interface is long deprecated and shouldn't be
used (and is discouraged for any modern v4l drivers). And Seth Jenkins
points out that the fallback to VM_PFNMAP/VM_IO is fundamentally racy
and dangerous.
Note that it's not even a case that should trigger, since any normal
user pointer logic ends up just using the pin_user_pages_fast() call
that does the proper page reference counting. That's not the problem
case, only if you try to use special device mappings do you have any
issues.
Normally I'd just remove this during the merge window, but since Seth
pointed out the problem cases, we really want to know as soon as
possible if there are actually any users of this odd special case of a
legacy interface. Neither Hans nor Mauro seem to think that such
mis-uses of the old legacy interface should exist. As Mauro says:
"See, V4L2 has actually 4 streaming APIs:
- Kernel-allocated mmap (usually referred simply as just mmap);
- USERPTR mmap;
- read();
- dmabuf;
The USERPTR is one of the oldest way to use it, coming from V4L
version 1 times, and by far the least used one"
And Hans chimed in on the USERPTR interface:
"To be honest, I wouldn't mind if it goes away completely, but that's a
bit of a pipe dream right now"
but while removing this legacy interface entirely may be a pipe dream we
can at least try to remove the unlikely (and actively broken) case of
using special device mappings for USERPTR accesses.
This replaces it with a WARN_ONCE() that we can remove once we've
hopefully confirmed that no actual users exist.
NOTE! Longer term, this means that a 'struct frame_vector' only ever
contains proper page pointers, and all the games we have with converting
them to pages can go away (grep for 'frame_vector_to_pages()' and the
uses of 'vec->is_pfns'). But this is just the first step, to verify
that this code really is all dead, and do so as quickly as possible.
Reported-by: Seth Jenkins <sethjenkins@google.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linus Torvaldsauthored and Greg Kroah-Hartmancommited 2022-12-08 11:15:42 +01:00
commit 7ea362427c170061b8822dd41bafaa72b3bcb9ad upstream.
If !area->pages statement is true where memory allocation fails, area is
freed.
In this case 'area->pages = pages' should not executed. So move
'area->pages = pages' after if statement.
Change-Id: I5eeec0c15312fabba296781ad1fddcf60f6e23be
[akpm@linux-foundation.org: give area->pages the same treatment]
Link: http://lkml.kernel.org/r/20190830035716.GA190684@LGEARND20B15
Signed-off-by: Austin Kim <austindh.kim@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Roman Penyaev <rpenyaev@suse.de>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Austin Kimauthored and Michael Bestascommited 2022-11-30 02:28:19 +02:00
-----BEGIN PGP SIGNATURE-----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=cO2v
-----END PGP SIGNATURE-----
Merge 4.9.334 into android-4.9-q
Changes in 4.9.334
HID: hyperv: fix possible memory leak in mousevsc_probe()
net: gso: fix panic on frag_list with mixed head alloc types
bnxt_en: fix potentially incorrect return value for ndo_rx_flow_steer
net: fman: Unregister ethernet device on removal
capabilities: fix undefined behavior in bit shift for CAP_TO_MASK
net: lapbether: fix issue of dev reference count leakage in lapbeth_device_event()
hamradio: fix issue of dev reference count leakage in bpq_device_event()
ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network
tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header
dmaengine: mv_xor_v2: Fix a resource leak in mv_xor_v2_remove()
drivers: net: xgene: disable napi when register irq failed in xgene_enet_open()
net: cxgb3_main: disable napi when bind qsets failed in cxgb_up()
ethernet: s2io: disable napi when start nic failed in s2io_card_up()
net: mv643xx_eth: disable napi when init rxq or txq failed in mv643xx_eth_open()
net: macvlan: fix memory leaks of macvlan_common_newlink
ALSA: hda: fix potential memleak in 'add_widget_node'
ALSA: usb-audio: Add quirk entry for M-Audio Micro
nilfs2: fix deadlock in nilfs_count_free_blocks()
platform/x86: hp_wmi: Fix rfkill causing soft blocked wifi
btrfs: selftests: fix wrong error check in btrfs_free_dummy_root()
udf: Fix a slab-out-of-bounds write bug in udf_find_entry()
cert host tools: Stop complaining about deprecated OpenSSL functions
dmaengine: at_hdmac: Fix at_lli struct definition
dmaengine: at_hdmac: Don't start transactions at tx_submit level
dmaengine: at_hdmac: Fix completion of unissued descriptor in case of errors
dmaengine: at_hdmac: Don't allow CPU to reorder channel enable
dmaengine: at_hdmac: Fix impossible condition
dmaengine: at_hdmac: Check return code of dma_async_device_register
x86/cpu: Restore AMD's DE_CFG MSR after resume
drm/imx: imx-tve: Fix return type of imx_tve_connector_mode_valid
Bluetooth: L2CAP: Fix l2cap_global_chan_by_psm
ASoC: core: Fix use-after-free in snd_soc_exit()
serial: 8250_omap: remove wait loop from Errata i202 workaround
serial: 8250: omap: Flush PM QOS work on remove
tty: n_gsm: fix sleep-in-atomic-context bug in gsm_control_send
ASoC: soc-utils: Remove __exit for snd_soc_util_exit()
parport_pc: Avoid FIFO port location truncation
pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map
mISDN: fix possible memory leak in mISDN_dsp_element_register()
mISDN: fix misuse of put_device() in mISDN_register_device()
net: caif: fix double disconnect client in chnl_net_open()
xen/pcpu: fix possible memory leak in register_pcpu()
net/x25: Fix skb leak in x25_lapb_receive_frame()
cifs: Fix wrong return value checking when GETFLAGS
ftrace: Fix the possible incorrect kernel message
ftrace: Optimize the allocation for mcount entries
ring_buffer: Do not deactivate non-existant pages
ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()
USB: serial: option: add Sierra Wireless EM9191
USB: serial: option: remove old LARA-R6 PID
USB: serial: option: add u-blox LARA-R6 00B modem
USB: serial: option: add u-blox LARA-L6 modem
USB: serial: option: add Fibocom FM160 0x0111 composition
usb: add NO_LPM quirk for Realforce 87U Keyboard
usb: chipidea: fix deadlock in ci_otg_del_timer
iio: adc: at91_adc: fix possible memory leak in at91_adc_allocate_trigger()
iio: trigger: sysfs: fix possible memory leak in iio_sysfs_trig_init()
iio: pressure: ms5611: changed hardcoded SPI speed to value limited
dm ioctl: fix misbehavior if list_versions races with module loading
serial: 8250: Fall back to non-DMA Rx if IIR_RDI occurs
serial: 8250_lpss: Configure DMA also w/o DMA filter
mmc: core: properly select voltage range without power cycle
misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram()
nilfs2: fix use-after-free bug of ns_writer on remount
serial: 8250: Flush DMA Rx on RLSI
tcp: cdg: allow tcp_cdg_release() to be called multiple times
kcm: avoid potential race in kcm_tx_work
9p: trans_fd/p9_conn_cancel: drop client lock earlier
gfs2: Check sb_bsize_shift after reading superblock
gfs2: Switch from strlcpy to strscpy
9p/trans_fd: always use O_NONBLOCK read/write
mm: fs: initialize fsdata passed to write_begin/write_end interface
ntfs: fix use-after-free in ntfs_attr_find()
ntfs: fix out-of-bounds read in ntfs_attr_find()
ntfs: check overflow when iterating ATTR_RECORDs
Linux 4.9.334
Change-Id: I9e6e907e472831b20a849c7765c0eb2a62694347
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
commit 1468c6f4558b1bcd92aa0400f2920f9dc7588402 upstream.
Functions implementing the a_ops->write_end() interface accept the `void
*fsdata` parameter that is supposed to be initialized by the corresponding
a_ops->write_begin() (which accepts `void **fsdata`).
However not all a_ops->write_begin() implementations initialize `fsdata`
unconditionally, so it may get passed uninitialized to a_ops->write_end(),
resulting in undefined behavior.
Fix this by initializing fsdata with NULL before the call to
write_begin(), rather than doing so in all possible a_ops implementations.
This patch covers only the following cases found by running x86 KMSAN
under syzkaller:
- generic_perform_write()
- cont_expand_zero() and generic_cont_expand_simple()
- page_symlink()
Other cases of passing uninitialized fsdata may persist in the codebase.
Link: https://lkml.kernel.org/r/20220915150417.722975-43-glider@google.com
Signed-off-by: Alexander Potapenko <glider@google.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Eric Biggers <ebiggers@kernel.org>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Marco Elver <elver@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alexander Potapenkoauthored and Greg Kroah-Hartmancommited 2022-11-25 17:35:43 +01:00
* common/android-4.9-q:
Linux 4.9.332
can: rcar_canfd: rcar_canfd_handle_global_receive(): fix IRQ storm on global FIFO receive
net: ehea: fix possible memory leak in ehea_register_port()
openvswitch: switch from WARN to pr_warn
ALSA: aoa: Fix I2S device accounting
ALSA: aoa: i2sbus: fix possible memory leak in i2sbus_add_dev()
net: ksz884x: fix missing pci_disable_device() on error in pcidev_init()
i40e: Fix ethtool rx-flow-hash setting for X722
media: videodev2.h: V4L2_DV_BT_BLANKING_HEIGHT should check 'interlaced'
media: v4l2-dv-timings: add sanity checks for blanking values
media: vivid: dev->bitmap_cap wasn't freed in all cases
media: vivid: s_fbuf: add more sanity checks
can: mscan: mpc5xxx: mpc5xxx_can_probe(): add missing put_clock() in error path
tcp: fix indefinite deferral of RTO with SACK reneging
net: lantiq_etop: don't free skb when returning NETDEV_TX_BUSY
kcm: annotate data-races around kcm->rx_wait
kcm: annotate data-races around kcm->rx_psock
ALSA: ac97: fix possible memory leak in snd_ac97_dev_register()
arc: iounmap() arg is volatile
drm/msm: Fix return type of mdp4_lvds_connector_mode_valid
net: ieee802154: fix error return code in dgram_bind()
mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages
xen/gntdev: Prevent leaking grants
Xen/gntdev: don't ignore kernel unmapping error
s390/futex: add missing EX_TABLE entry to __futex_atomic_op()
kernfs: fix use-after-free in __kernfs_remove
mmc: core: Fix kernel panic when remove non-standard SDIO card
drm/msm/hdmi: fix memory corruption with too many bridges
mac802154: Fix LQI recording
fbdev: smscufx: Fix several use-after-free bugs
tools: iio: iio_utils: fix digit calculation
xhci: Remove device endpoints from bandwidth list when freeing the device
usb: bdc: change state when port disconnected
USB: add RESET_RESUME quirk for NVIDIA Jetson devices in RCM
ALSA: au88x0: use explicitly signed char
ALSA: Use del_timer_sync() before freeing timer
ACPI: video: Force backlight native for more TongFang devices
net: hns: fix possible memory leak in hnae_ae_register()
net/atm: fix proc_mpc_write incorrect return value
HID: magicmouse: Do not set BTN_MOUSE on double report
arm64: errata: Remove AES hwcap for COMPAT tasks
ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS
ata: ahci-imx: Fix MODULE_ALIAS
ocfs2: fix BUG when iput after ocfs2_mknod fails
ocfs2: clear dinode links count in case of error
Linux 4.9.331
gcov: support GCC 12.1 and newer compilers
thermal: intel_powerclamp: Use first online CPU as control_cpu
inet: fully convert sk->sk_rx_dst to RCU rules
ext4: continue to expand file system when the target size doesn't reach
net/ieee802154: don't warn zero-sized raw_sendmsg()
net: ieee802154: return -EINVAL for unknown addr type
perf intel-pt: Fix segfault in intel_pt_print_info() with uClibc
usb: idmouse: fix an uninit-value in idmouse_open
Revert "usb: storage: Add quirk for Samsung Fit flash"
usb: musb: Fix musb_gadget.c rxstate overflow bug
usb: host: xhci: Fix potential memory leak in xhci_alloc_stream_info()
HID: roccat: Fix use-after-free in roccat_read()
scsi: 3w-9xxx: Avoid disabling device if failing to enable it
media: cx88: Fix a null-ptr-deref bug in buffer_prepare()
ARM: dts: imx6sl: add missing properties for sram
ARM: dts: imx6qp: add missing properties for sram
ARM: dts: imx6dl: add missing properties for sram
ARM: dts: imx6q: add missing properties for sram
ARM: dts: imx7d-sdb: config the max pressure for tsc2046
drm/amdgpu: fix initial connector audio value
platform/x86: msi-laptop: Change DMI match / alias strings to fix module autoloading
drm: Prevent drm_copy_field() to attempt copying a NULL pointer
drm: Use size_t type for len variable in drm_copy_field()
r8152: Rate limit overflow messages
Bluetooth: L2CAP: Fix user-after-free
wifi: rt2x00: don't run Rt5592 IQ calibration on MT7620
can: bcm: check the result of can_send() in bcm_can_tx()
Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times
Bluetooth: L2CAP: initialize delayed works at l2cap_chan_create()
xfrm: Update ipcomp_scratches with NULL when freed
tcp: annotate data-race around tcp_md5sig_pool_populated
openvswitch: Fix overreporting of drops in dropwatch
openvswitch: Fix double reporting of drops in dropwatch
thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash
powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue
MIPS: BCM47XX: Cast memcmp() of function to (void *)
ACPI: video: Add Toshiba Satellite/Portege Z830 quirk
f2fs: fix race condition on setting FI_NO_EXTENT flag
iommu/omap: Fix buffer overflow in debugfs
powerpc: Fix SPE Power ISA properties for e500v1 platforms
powerpc/pci_dn: Add missing of_node_put()
powerpc/math_emu/efp: Include module.h
clk: ti: dra7-atl: Fix reference leak in of_dra7_atl_clk_probe
clk: bcm2835: fix bcm2835_clock_rate_from_divisor declaration
dmaengine: ioat: stop mod_timer from resurrecting deleted timer in __cleanup()
mfd: sm501: Add check for platform_driver_register()
mfd: lp8788: Fix an error handling path in lp8788_irq_init() and lp8788_irq_init()
mfd: lp8788: Fix an error handling path in lp8788_probe()
mfd: intel_soc_pmic: Fix an error handling path in intel_soc_pmic_i2c_probe()
serial: 8250: Fix restoring termios speed after suspend
firmware: google: Test spinlock on panic path to avoid lockups
drivers: serial: jsm: fix some leaks in probe
ata: fix ata_id_has_dipm()
ata: fix ata_id_has_ncq_autosense()
ata: fix ata_id_has_devslp()
ata: fix ata_id_sense_reporting_enabled() and ata_id_has_sense_reporting()
dyndbg: let query-modname override actual module name
dyndbg: fix module.dyndbg handling
RDMA/rxe: Fix the error caused by qp->sk
RDMA/rxe: Fix "kernel NULL pointer dereference" error
media: xilinx: vipp: Fix refcount leak in xvip_graph_dma_init
tty: xilinx_uartps: Fix the ignore_status
media: exynos4-is: fimc-is: Add of_node_put() when breaking out of loop
HSI: omap_ssi_port: Fix dma_map_sg error check
HSI: omap_ssi: Fix refcount leak in ssi_probe
clk: tegra20: Fix refcount leak in tegra20_clock_init
clk: tegra: Fix refcount leak in tegra114_clock_init
clk: tegra: Fix refcount leak in tegra210_clock_init
iio: ABI: Fix wrong format of differential capacitance channel ABI.
iio: inkern: only release the device node when done with it
iio: adc: at91-sama5d2_adc: fix AT91_SAMA5D2_MR_TRACKTIM_MAX
ARM: dts: exynos: fix polarity of VBUS GPIO of Origen
ARM: Drop CMDLINE_* dependency on ATAGS
ARM: dts: kirkwood: lsxl: remove first ethernet port
ARM: dts: kirkwood: lsxl: fix serial line
soc: qcom: smem_state: Add refcounting for the 'state->of_node'
soc: qcom: smsm: Fix refcount leak bugs in qcom_smsm_probe()
memory: of: Fix refcount leak bug in of_get_ddr_timings()
ALSA: dmaengine: increment buffer pointer atomically
ASoC: eureka-tlv320: Hold reference returned from of_find_xxx API
mmc: au1xmmc: Fix an error handling path in au1xmmc_probe()
platform/x86: msi-laptop: Fix old-ec check for backlight registering
drm/mipi-dsi: Detach devices when removing the host
bnx2x: fix potential memory leak in bnx2x_tpa_stop()
net: rds: don't hold sock lock when cancelling work from rds_tcp_reset_callbacks()
tcp: fix tcp_cwnd_validate() to not forget is_cwnd_limited
mISDN: fix use-after-free bugs in l1oip timer handlers
spi/omap100k:Fix PM disable depth imbalance in omap1_spi100k_probe
net: fs_enet: Fix wrong check in do_pd_setup
wifi: rtl8xxxu: gen2: Fix mistake in path B IQ calibration
spi: qup: add missing clk_disable_unprepare on error in spi_qup_pm_resume_runtime()
spi: qup: add missing clk_disable_unprepare on error in spi_qup_resume()
wifi: rtl8xxxu: tighten bounds checking in rtl8xxxu_read_efuse()
wifi: mac80211: allow bw change during channel switch in mesh
wifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()
sh: machvec: Use char[] for section boundaries
selinux: use "grep -E" instead of "egrep"
KVM: x86/emulator: Fix handing of POP SS to correctly set interruptibility
ring-buffer: Fix race between reset page and reading page
ring-buffer: Check pending waiters when doing wake ups as well
ring-buffer: Allow splice to read previous partially read pages
ext4: place buffer head allocation before handle start
ext4: make ext4_lazyinit_thread freezable
ext4: fix null-ptr-deref in ext4_write_info
ext4: avoid crash when inline data creation follows DIO write
nilfs2: fix use-after-free bug of struct nilfs_root
fbdev: smscufx: Fix use-after-free in ufx_ops_open()
PCI: Sanitise firmware BAR assignments behind a PCI-PCI bridge
UM: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK
parisc: fbdev/stifb: Align graphics memory size to 4MB
regulator: qcom_rpm: Fix circular deferral regression
quota: Check next/prev free block number after reading from quota file
fs: dlm: handle -EBUSY first in lock arg validation
fs: dlm: fix race between test_bit() and queue_work()
iio: dac: ad5593r: Fix i2c read protocol requirements
ALSA: usb-audio: Fix NULL dererence at error path
ALSA: usb-audio: Fix potential memory leaks
ALSA: rawmidi: Drop register_mutex in snd_rawmidi_free()
ALSA: oss: Fix potential deadlock at unregistration
random: use expired timer rather than wq for mixing fast pool
Input: xpad - fix wireless 360 controller breaking after suspend
Input: xpad - add supported devices as contributed on github
random: restore O_NONBLOCK support
wifi: mac80211_hwsim: avoid mac80211 warning on bad rate
random: avoid reading two cache lines on irq randomness
USB: serial: qcserial: add new usb-id for Dell branded EM7455
scsi: stex: Properly zero out the passthrough command structure
ALSA: hda: Fix position reporting on Poulsbo
random: clamp credited irq bits to maximum mixed
ceph: don't truncate file in atomic_open
nilfs2: replace WARN_ONs by nilfs_error for checkpoint acquisition failure
nilfs2: fix leak of nilfs_root in case of writer thread creation failure
nilfs2: fix NULL pointer dereference at nilfs_bmap_lookup_at_level()
USB: serial: ftdi_sio: fix 300 bps rate for SIO
usb: mon: make mmapped memory read only
um: Cleanup compiler warning in arch/x86/um/tls_32.c
um: Cleanup syscall_handler_t cast in syscalls_32.h
net/ieee802154: fix uninit value bug in dgram_sendmsg
ARM: dts: fix Moxa SDIO 'compatible', remove 'sdhci' misnomer
dmaengine: xilinx_dma: Report error in case of dma_set_mask_and_coherent API failure
dmaengine: xilinx_dma: cleanup for fetching xlnx,num-fstores property
fs: fix UAF/GPF bug in nilfs_mdt_destroy
ARM: fix function graph tracer and unwinder dependencies
Makefile.extrawarn: Move -Wcast-function-type-strict to W=1
clk: iproc: Do not rely on node name for correct PLL setup
clk: iproc: Minor tidy up of iproc pll data structures
selftests: Fix the if conditions of in test_extra_filter()
nvme: Fix IOC_PR_CLEAR and IOC_PR_RELEASE ioctls for nvme devices
nvme: add new line after variable declatation
usbnet: Fix memory leak in usbnet_disconnect()
Input: melfas_mip4 - fix return value check in mip4_probe()
Revert "drm: bridge: analogix/dp: add panel prepare/unprepare in suspend/resume time"
mm: prevent page_frag_alloc() from corrupting the memory
mmc: moxart: fix 4-bit bus width and remove 8-bit bus width
ntfs: fix BUG_ON in ntfs_lookup_inode_by_name()
net: usb: qmi_wwan: Add new usb-id for Dell branded EM7455
uas: ignore UAS for Thinkplus chips
usb-storage: Add Hiksemi USB3-FW to IGNORE_UAS
uas: add no-uas quirk for Hiksemi usb_disk
Conflicts:
net/ipv4/udp.c
Change-Id: Ieefd73f73a15cc8f4dd6922ff3cd8342cb5cd5c9
-----BEGIN PGP SIGNATURE-----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=/sbY
-----END PGP SIGNATURE-----
Merge 4.9.332 into android-4.9-q
Changes in 4.9.332
ocfs2: clear dinode links count in case of error
ocfs2: fix BUG when iput after ocfs2_mknod fails
ata: ahci-imx: Fix MODULE_ALIAS
ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS
arm64: errata: Remove AES hwcap for COMPAT tasks
HID: magicmouse: Do not set BTN_MOUSE on double report
net/atm: fix proc_mpc_write incorrect return value
net: hns: fix possible memory leak in hnae_ae_register()
ACPI: video: Force backlight native for more TongFang devices
ALSA: Use del_timer_sync() before freeing timer
ALSA: au88x0: use explicitly signed char
USB: add RESET_RESUME quirk for NVIDIA Jetson devices in RCM
usb: bdc: change state when port disconnected
xhci: Remove device endpoints from bandwidth list when freeing the device
tools: iio: iio_utils: fix digit calculation
fbdev: smscufx: Fix several use-after-free bugs
mac802154: Fix LQI recording
drm/msm/hdmi: fix memory corruption with too many bridges
mmc: core: Fix kernel panic when remove non-standard SDIO card
kernfs: fix use-after-free in __kernfs_remove
s390/futex: add missing EX_TABLE entry to __futex_atomic_op()
Xen/gntdev: don't ignore kernel unmapping error
xen/gntdev: Prevent leaking grants
mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages
net: ieee802154: fix error return code in dgram_bind()
drm/msm: Fix return type of mdp4_lvds_connector_mode_valid
arc: iounmap() arg is volatile
ALSA: ac97: fix possible memory leak in snd_ac97_dev_register()
kcm: annotate data-races around kcm->rx_psock
kcm: annotate data-races around kcm->rx_wait
net: lantiq_etop: don't free skb when returning NETDEV_TX_BUSY
tcp: fix indefinite deferral of RTO with SACK reneging
can: mscan: mpc5xxx: mpc5xxx_can_probe(): add missing put_clock() in error path
media: vivid: s_fbuf: add more sanity checks
media: vivid: dev->bitmap_cap wasn't freed in all cases
media: v4l2-dv-timings: add sanity checks for blanking values
media: videodev2.h: V4L2_DV_BT_BLANKING_HEIGHT should check 'interlaced'
i40e: Fix ethtool rx-flow-hash setting for X722
net: ksz884x: fix missing pci_disable_device() on error in pcidev_init()
ALSA: aoa: i2sbus: fix possible memory leak in i2sbus_add_dev()
ALSA: aoa: Fix I2S device accounting
openvswitch: switch from WARN to pr_warn
net: ehea: fix possible memory leak in ehea_register_port()
can: rcar_canfd: rcar_canfd_handle_global_receive(): fix IRQ storm on global FIFO receive
Linux 4.9.332
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I34f534c6b1ba325afd8991a2731dab1bac206c0c
commit 12df140f0bdfae5dcfc81800970dd7f6f632e00c upstream.
The h->*_huge_pages counters are protected by the hugetlb_lock, but
alloc_huge_page has a corner case where it can decrement the counter
outside of the lock.
This could lead to a corrupted value of h->resv_huge_pages, which we have
observed on our systems.
Take the hugetlb_lock before decrementing h->resv_huge_pages to avoid a
potential race.
Link: https://lkml.kernel.org/r/20221017202505.0e6a4fcd@imladris.surriel.com
Fixes: a88c769548 ("mm: hugetlb: fix hugepage memory leak caused by wrong reserve count")
Signed-off-by: Rik van Riel <riel@surriel.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Glen McCready <gkmccready@meta.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rik van Rielauthored and Greg Kroah-Hartmancommited 2022-11-03 23:49:17 +09:00
-----BEGIN PGP SIGNATURE-----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=+FCj
-----END PGP SIGNATURE-----
Merge 4.9.331 into android-4.9-q
Changes in 4.9.331
uas: add no-uas quirk for Hiksemi usb_disk
usb-storage: Add Hiksemi USB3-FW to IGNORE_UAS
uas: ignore UAS for Thinkplus chips
net: usb: qmi_wwan: Add new usb-id for Dell branded EM7455
ntfs: fix BUG_ON in ntfs_lookup_inode_by_name()
mmc: moxart: fix 4-bit bus width and remove 8-bit bus width
mm: prevent page_frag_alloc() from corrupting the memory
Revert "drm: bridge: analogix/dp: add panel prepare/unprepare in suspend/resume time"
Input: melfas_mip4 - fix return value check in mip4_probe()
usbnet: Fix memory leak in usbnet_disconnect()
nvme: add new line after variable declatation
nvme: Fix IOC_PR_CLEAR and IOC_PR_RELEASE ioctls for nvme devices
selftests: Fix the if conditions of in test_extra_filter()
clk: iproc: Minor tidy up of iproc pll data structures
clk: iproc: Do not rely on node name for correct PLL setup
Makefile.extrawarn: Move -Wcast-function-type-strict to W=1
ARM: fix function graph tracer and unwinder dependencies
fs: fix UAF/GPF bug in nilfs_mdt_destroy
dmaengine: xilinx_dma: cleanup for fetching xlnx,num-fstores property
dmaengine: xilinx_dma: Report error in case of dma_set_mask_and_coherent API failure
ARM: dts: fix Moxa SDIO 'compatible', remove 'sdhci' misnomer
net/ieee802154: fix uninit value bug in dgram_sendmsg
um: Cleanup syscall_handler_t cast in syscalls_32.h
um: Cleanup compiler warning in arch/x86/um/tls_32.c
usb: mon: make mmapped memory read only
USB: serial: ftdi_sio: fix 300 bps rate for SIO
nilfs2: fix NULL pointer dereference at nilfs_bmap_lookup_at_level()
nilfs2: fix leak of nilfs_root in case of writer thread creation failure
nilfs2: replace WARN_ONs by nilfs_error for checkpoint acquisition failure
ceph: don't truncate file in atomic_open
random: clamp credited irq bits to maximum mixed
ALSA: hda: Fix position reporting on Poulsbo
scsi: stex: Properly zero out the passthrough command structure
USB: serial: qcserial: add new usb-id for Dell branded EM7455
random: avoid reading two cache lines on irq randomness
wifi: mac80211_hwsim: avoid mac80211 warning on bad rate
random: restore O_NONBLOCK support
Input: xpad - add supported devices as contributed on github
Input: xpad - fix wireless 360 controller breaking after suspend
random: use expired timer rather than wq for mixing fast pool
ALSA: oss: Fix potential deadlock at unregistration
ALSA: rawmidi: Drop register_mutex in snd_rawmidi_free()
ALSA: usb-audio: Fix potential memory leaks
ALSA: usb-audio: Fix NULL dererence at error path
iio: dac: ad5593r: Fix i2c read protocol requirements
fs: dlm: fix race between test_bit() and queue_work()
fs: dlm: handle -EBUSY first in lock arg validation
quota: Check next/prev free block number after reading from quota file
regulator: qcom_rpm: Fix circular deferral regression
parisc: fbdev/stifb: Align graphics memory size to 4MB
UM: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK
PCI: Sanitise firmware BAR assignments behind a PCI-PCI bridge
fbdev: smscufx: Fix use-after-free in ufx_ops_open()
nilfs2: fix use-after-free bug of struct nilfs_root
ext4: avoid crash when inline data creation follows DIO write
ext4: fix null-ptr-deref in ext4_write_info
ext4: make ext4_lazyinit_thread freezable
ext4: place buffer head allocation before handle start
ring-buffer: Allow splice to read previous partially read pages
ring-buffer: Check pending waiters when doing wake ups as well
ring-buffer: Fix race between reset page and reading page
KVM: x86/emulator: Fix handing of POP SS to correctly set interruptibility
selinux: use "grep -E" instead of "egrep"
sh: machvec: Use char[] for section boundaries
wifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()
wifi: mac80211: allow bw change during channel switch in mesh
wifi: rtl8xxxu: tighten bounds checking in rtl8xxxu_read_efuse()
spi: qup: add missing clk_disable_unprepare on error in spi_qup_resume()
spi: qup: add missing clk_disable_unprepare on error in spi_qup_pm_resume_runtime()
wifi: rtl8xxxu: gen2: Fix mistake in path B IQ calibration
net: fs_enet: Fix wrong check in do_pd_setup
spi/omap100k:Fix PM disable depth imbalance in omap1_spi100k_probe
mISDN: fix use-after-free bugs in l1oip timer handlers
tcp: fix tcp_cwnd_validate() to not forget is_cwnd_limited
net: rds: don't hold sock lock when cancelling work from rds_tcp_reset_callbacks()
bnx2x: fix potential memory leak in bnx2x_tpa_stop()
drm/mipi-dsi: Detach devices when removing the host
platform/x86: msi-laptop: Fix old-ec check for backlight registering
mmc: au1xmmc: Fix an error handling path in au1xmmc_probe()
ASoC: eureka-tlv320: Hold reference returned from of_find_xxx API
ALSA: dmaengine: increment buffer pointer atomically
memory: of: Fix refcount leak bug in of_get_ddr_timings()
soc: qcom: smsm: Fix refcount leak bugs in qcom_smsm_probe()
soc: qcom: smem_state: Add refcounting for the 'state->of_node'
ARM: dts: kirkwood: lsxl: fix serial line
ARM: dts: kirkwood: lsxl: remove first ethernet port
ARM: Drop CMDLINE_* dependency on ATAGS
ARM: dts: exynos: fix polarity of VBUS GPIO of Origen
iio: adc: at91-sama5d2_adc: fix AT91_SAMA5D2_MR_TRACKTIM_MAX
iio: inkern: only release the device node when done with it
iio: ABI: Fix wrong format of differential capacitance channel ABI.
clk: tegra: Fix refcount leak in tegra210_clock_init
clk: tegra: Fix refcount leak in tegra114_clock_init
clk: tegra20: Fix refcount leak in tegra20_clock_init
HSI: omap_ssi: Fix refcount leak in ssi_probe
HSI: omap_ssi_port: Fix dma_map_sg error check
media: exynos4-is: fimc-is: Add of_node_put() when breaking out of loop
tty: xilinx_uartps: Fix the ignore_status
media: xilinx: vipp: Fix refcount leak in xvip_graph_dma_init
RDMA/rxe: Fix "kernel NULL pointer dereference" error
RDMA/rxe: Fix the error caused by qp->sk
dyndbg: fix module.dyndbg handling
dyndbg: let query-modname override actual module name
ata: fix ata_id_sense_reporting_enabled() and ata_id_has_sense_reporting()
ata: fix ata_id_has_devslp()
ata: fix ata_id_has_ncq_autosense()
ata: fix ata_id_has_dipm()
drivers: serial: jsm: fix some leaks in probe
firmware: google: Test spinlock on panic path to avoid lockups
serial: 8250: Fix restoring termios speed after suspend
mfd: intel_soc_pmic: Fix an error handling path in intel_soc_pmic_i2c_probe()
mfd: lp8788: Fix an error handling path in lp8788_probe()
mfd: lp8788: Fix an error handling path in lp8788_irq_init() and lp8788_irq_init()
mfd: sm501: Add check for platform_driver_register()
dmaengine: ioat: stop mod_timer from resurrecting deleted timer in __cleanup()
clk: bcm2835: fix bcm2835_clock_rate_from_divisor declaration
clk: ti: dra7-atl: Fix reference leak in of_dra7_atl_clk_probe
powerpc/math_emu/efp: Include module.h
powerpc/pci_dn: Add missing of_node_put()
powerpc: Fix SPE Power ISA properties for e500v1 platforms
iommu/omap: Fix buffer overflow in debugfs
f2fs: fix race condition on setting FI_NO_EXTENT flag
ACPI: video: Add Toshiba Satellite/Portege Z830 quirk
MIPS: BCM47XX: Cast memcmp() of function to (void *)
powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue
thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash
openvswitch: Fix double reporting of drops in dropwatch
openvswitch: Fix overreporting of drops in dropwatch
tcp: annotate data-race around tcp_md5sig_pool_populated
xfrm: Update ipcomp_scratches with NULL when freed
Bluetooth: L2CAP: initialize delayed works at l2cap_chan_create()
Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times
can: bcm: check the result of can_send() in bcm_can_tx()
wifi: rt2x00: don't run Rt5592 IQ calibration on MT7620
Bluetooth: L2CAP: Fix user-after-free
r8152: Rate limit overflow messages
drm: Use size_t type for len variable in drm_copy_field()
drm: Prevent drm_copy_field() to attempt copying a NULL pointer
platform/x86: msi-laptop: Change DMI match / alias strings to fix module autoloading
drm/amdgpu: fix initial connector audio value
ARM: dts: imx7d-sdb: config the max pressure for tsc2046
ARM: dts: imx6q: add missing properties for sram
ARM: dts: imx6dl: add missing properties for sram
ARM: dts: imx6qp: add missing properties for sram
ARM: dts: imx6sl: add missing properties for sram
media: cx88: Fix a null-ptr-deref bug in buffer_prepare()
scsi: 3w-9xxx: Avoid disabling device if failing to enable it
HID: roccat: Fix use-after-free in roccat_read()
usb: host: xhci: Fix potential memory leak in xhci_alloc_stream_info()
usb: musb: Fix musb_gadget.c rxstate overflow bug
Revert "usb: storage: Add quirk for Samsung Fit flash"
usb: idmouse: fix an uninit-value in idmouse_open
perf intel-pt: Fix segfault in intel_pt_print_info() with uClibc
net: ieee802154: return -EINVAL for unknown addr type
net/ieee802154: don't warn zero-sized raw_sendmsg()
ext4: continue to expand file system when the target size doesn't reach
inet: fully convert sk->sk_rx_dst to RCU rules
thermal: intel_powerclamp: Use first online CPU as control_cpu
gcov: support GCC 12.1 and newer compilers
Linux 4.9.331
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I105d6215a29d200abe3330f328ce3c2009ba0df9
commit dac22531bbd4af2426c4e29e05594415ccfa365d upstream.
A number of drivers call page_frag_alloc() with a fragment's size >
PAGE_SIZE.
In low memory conditions, __page_frag_cache_refill() may fail the order
3 cache allocation and fall back to order 0; In this case, the cache
will be smaller than the fragment, causing memory corruptions.
Prevent this from happening by checking if the newly allocated cache is
large enough for the fragment; if not, the allocation will fail and
page_frag_alloc() will return NULL.
Link: https://lkml.kernel.org/r/20220715125013.247085-1-mlombard@redhat.com
Fixes: b63ae8ca09 ("mm/net: Rename and move page fragment handling from net/ to mm/")
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Cc: Chen Lin <chen45464546@163.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Maurizio Lombardiauthored and Greg Kroah-Hartmancommited 2022-10-26 13:15:32 +02:00
* common/android-4.9-q:
Linux 4.9.330
ext4: make directory inode spreading reflect flexbg size
Drivers: hv: Never allocate anything besides framebuffer from framebuffer memory region
s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup
serial: tegra: Use uart_xmit_advance(), fixes icount.tx accounting
serial: Create uart_xmit_advance()
net: sunhme: Fix packet reception for len < RX_COPY_THRESHOLD
perf kcore_copy: Do not check /proc/modules is unchanged
can: gs_usb: gs_can_open(): fix race dev->can.state condition
MIPS: lantiq: export clk_get_io() for lantiq_wdt.ko
net: team: Unsync device addresses on ndo_stop
ipvlan: Fix out-of-bound bugs caused by unset skb->mac_header
netfilter: nf_conntrack_irc: Tighten matching on DCC message
netfilter: nf_conntrack_sip: fix ct_sip_walk_headers
mm/slub: fix to return errno if kmalloc() fails
ALSA: hda: add Intel 5 Series / 3400 PCI DID
ALSA: hda/tegra: set depop delay for tegra
USB: core: Fix RST error in hub.c
wifi: mac80211: Fix UAF in ieee80211_scan_rx()
video: fbdev: pxa3xx-gcu: Fix integer overflow in pxa3xx_gcu_write
cifs: don't send down the destination address to sendmsg for a SOCK_STREAM
parisc: ccio-dma: Add missing iounmap in error path in ccio_probe()
Linux 4.9.329
tracefs: Only clobber mode/uid/gid on remount if asked
mm: Fix TLB flush for not-first PFNMAP mappings in unmap_region()
platform/x86: acer-wmi: Acer Aspire One AOD270/Packard Bell Dot keymap fixes
ieee802154: cc2520: add rc code in cc2520_tx()
tg3: Disable tg3 device on system reboot to avoid triggering AER
HID: ishtp-hid-clientHID: ishtp-hid-client: Fix comment typo
drm/msm/rd: Fix FIFO-full deadlock
Linux 4.9.328
SUNRPC: use _bh spinlocking on ->transport_lock
MIPS: loongson32: ls1c: Fix hang during startup
usb: dwc3: fix PHY disable sequence
sch_sfb: Also store skb len before calling child enqueue
tcp: fix early ETIMEDOUT after spurious non-SACK RTO
tipc: fix shift wrapping bug in map_get()
sch_sfb: Don't assume the skb is still around after enqueueing to child
netfilter: nf_conntrack_irc: Fix forged IP logic
netfilter: br_netfilter: Drop dst references before setting.
driver core: Don't probe devices after bus_type.match() probe deferral
scsi: mpt3sas: Fix use-after-free warning
ALSA: usb-audio: Fix an out-of-bounds bug in __snd_usb_parse_audio_interface()
ALSA: aloop: Fix random zeros in capture data when using jiffies timer
ALSA: emu10k1: Fix out of bounds access in snd_emu10k1_pcm_channel_alloc()
fbdev: chipsfb: Add missing pci_disable_device() in chipsfb_pci_init()
parisc: Add runtime check to prevent PA2.0 kernels on PA1.x machines
parisc: ccio-dma: Handle kmalloc failure in ccio_init_resources()
drm/radeon: add a force flush to delay work when radeon
Revert "mm: kmemleak: take a full lowmem check in kmemleak_*_phys()"
fs: only do a memory barrier for the first set_buffer_uptodate()
ALSA: seq: Fix data-race at module auto-loading
ALSA: seq: oss: Fix data-race for max_midi_devs access
net: mac802154: Fix a condition in the receive path
wifi: mac80211: Don't finalize CSA in IBSS mode if state is disconnected
usb: gadget: mass_storage: Fix cdrom data transfers on MAC-OS
USB: core: Prevent nested device-reset calls
s390: fix nospec table alignments
s390/hugetlb: fix prepare_hugepage_range() check for 2 GB hugepages
usb-storage: Add ignore-residue quirk for NXP PN7462AU
USB: cdc-acm: Add Icom PMR F3400 support (0c26:0020)
USB: serial: option: add support for Cinterion MV32-WA/WB RmNet mode
USB: serial: option: add support for OPPO R11 diag port
USB: serial: cp210x: add Decagon UCA device id
xhci: Add grace period after xHC start to prevent premature runtime suspend.
hwmon: (gpio-fan) Fix array out of bounds access
USB: serial: ftdi_sio: add Omron CS1W-CIF31 device id
vt: Clear selection before changing the font
staging: rtl8712: fix use after free bugs
serial: fsl_lpuart: RS485 RTS polariy is inverse
wifi: cfg80211: debugfs: fix return type in ht40allow_map_read()
platform/x86: pmc_atom: Fix SLP_TYPx bitfield mask
fbdev: fb_pm2fb: Avoid potential divide by zero error
Conflicts:
drivers/usb/dwc3/core.c
net/netfilter/nf_conntrack_irc.c
Change-Id: I7e3e438b5139697f5979b20110708a60ed6a250b
-----BEGIN PGP SIGNATURE-----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=8Sz6
-----END PGP SIGNATURE-----
Merge 4.9.328 into android-4.9-q
Changes in 4.9.328
fbdev: fb_pm2fb: Avoid potential divide by zero error
platform/x86: pmc_atom: Fix SLP_TYPx bitfield mask
wifi: cfg80211: debugfs: fix return type in ht40allow_map_read()
serial: fsl_lpuart: RS485 RTS polariy is inverse
staging: rtl8712: fix use after free bugs
vt: Clear selection before changing the font
USB: serial: ftdi_sio: add Omron CS1W-CIF31 device id
hwmon: (gpio-fan) Fix array out of bounds access
xhci: Add grace period after xHC start to prevent premature runtime suspend.
USB: serial: cp210x: add Decagon UCA device id
USB: serial: option: add support for OPPO R11 diag port
USB: serial: option: add support for Cinterion MV32-WA/WB RmNet mode
USB: cdc-acm: Add Icom PMR F3400 support (0c26:0020)
usb-storage: Add ignore-residue quirk for NXP PN7462AU
s390/hugetlb: fix prepare_hugepage_range() check for 2 GB hugepages
s390: fix nospec table alignments
USB: core: Prevent nested device-reset calls
usb: gadget: mass_storage: Fix cdrom data transfers on MAC-OS
wifi: mac80211: Don't finalize CSA in IBSS mode if state is disconnected
net: mac802154: Fix a condition in the receive path
ALSA: seq: oss: Fix data-race for max_midi_devs access
ALSA: seq: Fix data-race at module auto-loading
fs: only do a memory barrier for the first set_buffer_uptodate()
Revert "mm: kmemleak: take a full lowmem check in kmemleak_*_phys()"
drm/radeon: add a force flush to delay work when radeon
parisc: ccio-dma: Handle kmalloc failure in ccio_init_resources()
parisc: Add runtime check to prevent PA2.0 kernels on PA1.x machines
fbdev: chipsfb: Add missing pci_disable_device() in chipsfb_pci_init()
ALSA: emu10k1: Fix out of bounds access in snd_emu10k1_pcm_channel_alloc()
ALSA: aloop: Fix random zeros in capture data when using jiffies timer
ALSA: usb-audio: Fix an out-of-bounds bug in __snd_usb_parse_audio_interface()
scsi: mpt3sas: Fix use-after-free warning
driver core: Don't probe devices after bus_type.match() probe deferral
netfilter: br_netfilter: Drop dst references before setting.
netfilter: nf_conntrack_irc: Fix forged IP logic
sch_sfb: Don't assume the skb is still around after enqueueing to child
tipc: fix shift wrapping bug in map_get()
tcp: fix early ETIMEDOUT after spurious non-SACK RTO
sch_sfb: Also store skb len before calling child enqueue
usb: dwc3: fix PHY disable sequence
MIPS: loongson32: ls1c: Fix hang during startup
SUNRPC: use _bh spinlocking on ->transport_lock
Linux 4.9.328
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Iee010f5cbfe25dd4503d7f395508fb20a2fc2934
This is a stable-specific patch.
I botched the stable-specific rewrite of
commit b67fbebd4cf98 ("mmu_gather: Force tlb-flush VM_PFNMAP vmas"):
As Hugh pointed out, unmap_region() actually operates on a list of VMAs,
and the variable "vma" merely points to the first VMA in that list.
So if we want to check whether any of the VMAs we're operating on is
PFNMAP or MIXEDMAP, we have to iterate through the list and check each VMA.
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jann Hornauthored and Greg Kroah-Hartmancommited 2022-09-20 11:50:16 +02:00
This reverts commit 23c2d497de21f25898fbea70aeb292ab8acc8c94.
Commit 23c2d497de21 ("mm: kmemleak: take a full lowmem check in
kmemleak_*_phys()") brought false leak alarms on some archs like arm64
that does not init pfn boundary in early booting. The final solution
lands on linux-6.0: commit 0c24e061196c ("mm: kmemleak: add rbtree and
store physical address for objects allocated with PA").
Revert this commit before linux-6.0. The original issue of invalid PA
can be mitigated by additional check in devicetree.
The false alarm report is as following: Kmemleak output: (Qemu/arm64)
unreferenced object 0xffff0000c0170a00 (size 128):
comm "swapper/0", pid 1, jiffies 4294892404 (age 126.208s)
hex dump (first 32 bytes):
62 61 73 65 00 00 00 00 00 00 00 00 00 00 00 00 base............
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<(____ptrval____)>] __kmalloc_track_caller+0x1b0/0x2e4
[<(____ptrval____)>] kstrdup_const+0x8c/0xc4
[<(____ptrval____)>] kvasprintf_const+0xbc/0xec
[<(____ptrval____)>] kobject_set_name_vargs+0x58/0xe4
[<(____ptrval____)>] kobject_add+0x84/0x100
[<(____ptrval____)>] __of_attach_node_sysfs+0x78/0xec
[<(____ptrval____)>] of_core_init+0x68/0x104
[<(____ptrval____)>] driver_init+0x28/0x48
[<(____ptrval____)>] do_basic_setup+0x14/0x28
[<(____ptrval____)>] kernel_init_freeable+0x110/0x178
[<(____ptrval____)>] kernel_init+0x20/0x1a0
[<(____ptrval____)>] ret_from_fork+0x10/0x20
This pacth is also applicable to linux-5.17.y/linux-5.18.y/linux-5.19.y
Cc: <stable@vger.kernel.org>
Signed-off-by: Yee Lee <yee.lee@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Yee Leeauthored and Greg Kroah-Hartmancommited 2022-09-15 12:39:45 +02:00
* common/android-4.9-q:
Linux 4.9.327
kprobes: don't call disarm_kprobe() for disabled kprobes
mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse
netfilter: conntrack: NF_CONNTRACK_PROCFS should no longer default to y
s390/hypfs: avoid error message under KVM
arm64: map FDT as RW for early_init_dt_scan()
ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead
fbdev: fb_pm2fb: Avoid potential divide by zero error
HID: hidraw: fix memory leak in hidraw_release()
media: pvrusb2: fix memory leak in pvr_probe
Bluetooth: L2CAP: Fix build errors in some archs
kbuild: Fix include path in scripts/Makefile.modpost
x86/bugs: Add "unknown" reporting for MMIO Stale Data
x86/cpu: Add Tiger Lake to Intel family
s390/mm: do not trigger write fault when vma does not allow VM_WRITE
mm: Force TLB flush for PFNMAP mappings before unlink_file_vma()
mm/hugetlb: fix hugetlb not supporting softdirty tracking
asm-generic: sections: refactor memory_intersects
loop: Check for overflow while configuring loop
btrfs: check if root is readonly while setting security xattr
ixgbe: stop resetting SYSTIME in ixgbe_ptp_start_cyclecounter
net: Fix a data-race around sysctl_somaxconn.
net: Fix a data-race around sysctl_net_busy_read.
net: Fix a data-race around sysctl_net_busy_poll.
net: Fix a data-race around sysctl_tstamp_allow_data.
ratelimit: Fix data-races in ___ratelimit().
netfilter: nft_payload: report ERANGE for too long offset and length
bonding: 802.3ad: fix no transmission of LACPDUs
rose: check NULL rose_loopback_neigh->loopback
af_key: Do not call xfrm_probe_algs in parallel
xfrm: fix refcount leak in __xfrm_policy_check()
parisc: Fix exception handler for fldw and fstw instructions
Linux 4.9.326
MIPS: tlbex: Explicitly compare _PAGE_NO_EXEC against 0
video: fbdev: i740fb: Check the argument of i740_calc_vclk()
powerpc/64: Init jump labels before parse_early_param()
ALSA: timer: Use deferred fasync helper
ALSA: core: Add async signal helpers
mips: cavium-octeon: Fix missing of_node_put() in octeon2_usb_clocks_start
vfio: Clear the caps->buf to NULL after free
tty: serial: Fix refcount leak bug in ucc_uart.c
ext4: avoid resizing to a partial cluster size
ext4: avoid remove directory when directory is corrupted
drivers:md:fix a potential use-after-free bug
cxl: Fix a memory leak in an error handling path
gadgetfs: ep_io - wait until IRQ finishes
usb: host: ohci-ppc-of: Fix refcount leak bug
irqchip/tegra: Fix overflow implicit truncation warnings
fec: Fix timer capture timing in `fec_ptp_enable_pps()`
netfilter: nf_tables: really skip inactive sets when allocating name
nios2: add force_successful_syscall_return()
nios2: restarts apply only to the first sigframe we build...
nios2: fix syscall restart checks
nios2: traced syscall does need to check the syscall number
nios2: don't leave NULLs in sys_call_table[]
nios2: page fault et.al. are *not* restartable syscalls...
atm: idt77252: fix use-after-free bugs caused by tst_timer
xen/xenbus: fix return type in xenbus_file_read()
vsock: Fix memory leak in vsock_connect()
pinctrl: qcom: msm8916: Allow CAMSS GP clocks to be muxed
pinctrl: nomadik: Fix refcount leak in nmk_pinctrl_dt_subnode_to_map
SUNRPC: Reinitialise the backchannel request buffers before reuse
NFSv4.1: RECLAIM_COMPLETE must handle EACCES
can: ems_usb: fix clang's -Wunaligned-access warning
btrfs: fix lost error handling when looking up extended ref on log replay
ata: libata-eh: Add missing command name
rds: add missing barrier to release_refill
ALSA: info: Fix llseek return value when using callback
net_sched: cls_route: disallow handle of 0
net/9p: Initialize the iounit field during fid creation
nios2: time: Read timer in get_cycles only if initialized
Bluetooth: L2CAP: Fix l2cap_global_chan_by_psm regression
Revert "net: usb: ax88179_178a needs FLAG_SEND_ZLP"
scsi: sg: Allow waiting for commands to complete on removed device
tcp: fix over estimation in sk_forced_mem_schedule()
btrfs: reject log replay if there is unsupported RO compat flag
net_sched: cls_route: remove from list when handle is 0
dm raid: fix address sanitizer warning in raid_status
ext4: correct max_inline_xattr_value_size computing
ext4: fix extent status tree race in writeback error recovery path
ext4: update s_overhead_clusters in the superblock during an on-line resize
ext4: fix use-after-free in ext4_xattr_set_entry
ext4: make sure ext4_append() always allocates new block
ext4: add EXT4_INODE_HAS_XATTR_SPACE macro in xattr.h
spmi: trace: fix stack-out-of-bound access in SPMI tracing functions
x86/olpc: fix 'logical not is only applied to the left hand side'
scsi: zfcp: Fix missing auto port scan and thus missing target ports
netfilter: nf_tables: fix null deref due to zeroed list head
USB: HCD: Fix URB giveback issue in tasklet function
MIPS: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK
powerpc/powernv: Avoid crashing if rng is NULL
powerpc/fsl-pci: Fix Class Code of PCIe Root Port
PCI: Add defines for normal and subtractive PCI bridges
ia64, processor: fix -Wincompatible-pointer-types in ia64_get_irr()
md-raid10: fix KASAN warning
fuse: limit nsec
bpf: fix overflow in prog accounting
drm/nouveau: fix another off-by-one in nvbios_addr
parisc: Fix device names in /proc/iomem
usbnet: Fix linkwatch use-after-free on disconnect
vfs: Check the truncate maximum size in inode_newsize_ok()
ALSA: hda/cirrus - support for iMac 12,1 model
ALSA: hda/conexant: Add quirk for LENOVO 20149 Notebook model
KVM: x86: Mark TSS busy during LTR emulation _after_ all fault checks
KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0
add barriers to buffer_uptodate and set_buffer_uptodate
ALSA: bcd2000: Fix a UAF bug on the error path of probing
macintosh/adb: fix oob read in do_adb_query() function
random: only call boot_init_stack_canary() once
ACPI: video: Shortening quirk list by identifying Clevo by board_name only
ACPI: video: Force backlight native for some TongFang devices
init/main.c: extract early boot entropy from the passed cmdline
init: move stack canary initialization after setup_arch
init/main: properly align the multi-line comment
init/main: Fix double "the" in comment
include/uapi/linux/swab.h: fix userspace breakage, use __BITS_PER_LONG for swap
selinux: fix inode_doinit_with_dentry() LABEL_INVALID error handling
selinux: fix error initialization in inode_doinit_with_dentry()
selinux: Convert isec->lock into a spinlock
selinux: Clean up initialization of isec->sclass
proc: Pass file mode to proc_pid_make_inode
selinux: Minor cleanups
ion: Make user_ion_handle_put_nolock() a void function
mt7601u: add USB device ID for some versions of XiaoDu WiFi Dongle.
ARM: crypto: comment out gcc warning that breaks clang builds
netfilter: nf_queue: do not allow packet truncation below transport header offset
net: sungem_phy: Add of_node_put() for reference returned by of_get_parent()
net: ping6: Fix memleak in ipv6_renew_options().
scsi: ufs: host: Hold reference returned by of_parse_phandle()
ntfs: fix use-after-free in ntfs_ucsncmp()
Bluetooth: L2CAP: Fix use-after-free caused by l2cap_chan_put
FROMLIST: binder: fix UAF of ref->proc caused by race condition
Linux 4.9.325
net: usb: ax88179_178a needs FLAG_SEND_ZLP
tty: use new tty_insert_flip_string_and_push_buffer() in pty_write()
tty: extract tty_flip_buffer_commit() from tty_flip_buffer_push()
tty: drop tty_schedule_flip()
tty: the rest, stop using tty_schedule_flip()
tty: drivers/tty/, stop using tty_schedule_flip()
ALSA: memalloc: Align buffer allocations in page size
bpf: Make sure mac_header was set before using it
mm/mempolicy: fix uninit-value in mpol_rebind_policy()
Revert "Revert "char/random: silence a lockdep splat with printk()""
be2net: Fix buffer overflow in be_get_module_eeprom
tcp: Fix a data-race around sysctl_tcp_notsent_lowat.
igmp: Fix a data-race around sysctl_igmp_max_memberships.
igmp: Fix data-races around sysctl_igmp_llm_reports.
i2c: cadence: Change large transfer count reset logic to be unconditional
tcp: Fix a data-race around sysctl_tcp_probe_threshold.
tcp/dccp: Fix a data-race around sysctl_tcp_fwmark_accept.
ip: Fix a data-race around sysctl_fwmark_reflect.
perf/core: Fix data race between perf_event_set_output() and perf_mmap_close()
power/reset: arm-versatile: Fix refcount leak in versatile_reboot_probe
xfrm: xfrm_policy: fix a possible double xfrm_pols_put() in xfrm_bundle_lookup()
misc: rtsx_usb: set return value in rsp_buf alloc err path
misc: rtsx_usb: use separate command and response buffers
misc: rtsx_usb: fix use of dma mapped buffer for usb bulk transfer
xen/gntdev: Ignore failure to unmap INVALID_GRANT_HANDLE
security,selinux,smack: kill security_task_wait hook
FROMGIT: arm64: fix oops in concurrently setting insn_emulation sysctls
Linux 4.9.324
can: m_can: m_can_tx_handler(): fix use after free of skb
mm: invalidate hwpoison page cache page in fault path
serial: 8250: fix return error code in serial8250_request_std_resource()
tty: serial: samsung_tty: set dma burst_size to 1
usb: dwc3: gadget: Fix event pending check
USB: serial: ftdi_sio: add Belimo device ids
signal handling: don't use BUG_ON() for debugging
x86: Clear .brk area at early boot
ASoC: wm5110: Fix DRE control
ASoC: ops: Fix off by one in range control validation
NFC: nxp-nci: don't print header length mismatch on i2c error
net: tipc: fix possible refcount leak in tipc_sk_create()
cpufreq: pmac32-cpufreq: Fix refcount leak bug
virtio_mmio: Restore guest page size on resume
virtio_mmio: Add missing PM calls to freeze/restore
sfc: fix kernel panic when creating VF
sfc: fix use after free when disabling sriov
ipv4: Fix data-races around sysctl_ip_dynaddr.
icmp: Fix data-races around sysctl.
cipso: Fix data-races around sysctl.
ARM: 9209/1: Spectre-BHB: avoid pr_info() every time a CPU comes out of idle
net: dsa: bcm_sf2: force pause link settings
nilfs2: fix incorrect masking of permission flags for symlinks
ARM: 9213/1: Print message about disabled Spectre workarounds only once
net: sock: tracing: Fix sock_exceed_buf_limit not to dereference stale pointer
xen/netback: avoid entering xenvif_rx_next_skb() with an empty rx queue
ALSA: hda - Add fixup for Dell Latitidue E5430
arm64: entry: Restore tramp_map_kernel ISB
Linux 4.9.323
dmaengine: ti: Add missing put_device in ti_dra7_xbar_route_allocate
dmaengine: ti: Fix refcount leak in ti_dra7_xbar_route_allocate
dmaengine: at_xdma: handle errors of at_xdmac_alloc_desc() correctly
ida: don't use BUG_ON() for debugging
i2c: cadence: Unregister the clk notifier in error path
pinctrl: sunxi: a83t: Fix NAND function name for some pins
xfs: remove incorrect ASSERT in xfs_rename
video: of_display_timing.h: include errno.h
iommu/vt-d: Fix PCI bus rescan device hot add
net: rose: fix UAF bug caused by rose_t0timer_expiry
usbnet: fix memory leak in error case
can: gs_usb: gs_usb_open/close(): fix memory leak
can: grcan: grcan_probe(): remove extra of_node_get()
mm/slub: add missing TID updates on slab deactivation
Linux 4.9.322
net: usb: qmi_wwan: add Telit 0x1070 composition
net: usb: qmi_wwan: add Telit 0x1060 composition
net: usb: qmi_wwan: add Telit LE910Cx 0x1230 composition
net: usb: qmi_wwan: add Telit 0x1260 and 0x1261 compositions
qmi_wwan: Added support for Telit LN940 series
xen/arm: Fix race in RB-tree based P2M accounting
xen/blkfront: force data bouncing when backend is untrusted
xen/netfront: force data bouncing when backend is untrusted
xen/netfront: fix leaking data in shared pages
xen/blkfront: fix leaking data in shared pages
net: Rename and export copy_skb_header
ipv6/sit: fix ipip6_tunnel_get_prl return value
sit: use min
hwmon: (ibmaem) don't call platform_device_del() if platform_device_add() fails
xen/gntdev: Avoid blocking in unmap_grant_pages()
NFC: nxp-nci: Don't issue a zero length i2c_master_read()
nfc: nfcmrvl: Fix irq_of_parse_and_map() return value
net: bonding: fix use-after-free after 802.3ad slave unbind
net: bonding: fix possible NULL deref in rlb code
netfilter: nft_dynset: restore set element counter when failing to update
caif_virtio: fix race between virtio_device_ready() and ndo_open()
powerpc/powernv: wire up rng during setup_arch
usbnet: fix memory allocation in helpers
usbnet: make sure no NULL pointer is passed through
net: usb: ax88179_178a: Fix packet receiving
net: rose: fix UAF bugs caused by timer handler
SUNRPC: Fix READ_PLUS crasher
dm raid: fix KASAN warning in raid5_add_disks
Conflicts:
arch/arm64/kernel/setup.c
drivers/staging/android/ion/ion-ioctl.c
drivers/usb/dwc3/gadget.c
security/selinux/include/objsec.h
Change-Id: I22b34d087ac0e3c3c2ad8c90f2a590e54ed3a6e8
-----BEGIN PGP SIGNATURE-----
iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAmMVsjAACgkQONu9yGCS
aT6rtw//fEVAYFcquC0PookJ8zDKPeXj3dXZyLXnnuKgfFLbEYSP2+fNvOTErND5
6EFPEqR/17hvOmkqL5h+bXhCPln5VYQFswfNlRSrOnqHPRYGsZFVyVV0kCFxe1GC
toXNkZk+d0/npogk4inw7RlqMumI0HOwBIFd927CzLkmsPw8WMYPqItOTZpR7yXw
1JOlDPpC+MzTtz/AxQkxDt9hrGqdSr/Fc9Lzi9bMORkYqo6dJoYa2wT5sCK1JrHd
ZZuZ+V/+KqpL1xSMOrCPElm+cSJYYJiO80nRl3ip/fLEV1AxJyBz+TQr+pqe4TjM
grxTIpZbN4cY9+jPCBay+uWcKjO9L8gWDjP/7Q4XhqsHfJdzFfbtK0SVXZXBM12T
RjuZtSHi4UK0BXheANFxxVB/ol9Th4e0IAqOoMJRPRKhB5bPMYpYL0nuCpM6OIH6
eYP8EKCUZkEvUBW217NoBpLOaUQzn2ssdjKDgYheoiJocv60igBs117lOAdSnfrG
esOb0qy/WvGeWM8oLUvTvy+g9FjWT7M72e+Z4m8347BvOg8SwAQ31GJCxlPpmyTb
r0c7eUJeVDUQ5Mhh6l5tT+AzpDj57UZcBUu5Gp5tO5rZ3gLCSXGkfqcywNkzefiT
hOQ4tVhs5Wx6+qEAQAgh4F33ElUFaanf35m5x/lPxOAxUQMHRl0=
=PW/r
-----END PGP SIGNATURE-----
Merge 4.9.327 into android-4.9-q
Changes in 4.9.327
parisc: Fix exception handler for fldw and fstw instructions
xfrm: fix refcount leak in __xfrm_policy_check()
af_key: Do not call xfrm_probe_algs in parallel
rose: check NULL rose_loopback_neigh->loopback
bonding: 802.3ad: fix no transmission of LACPDUs
netfilter: nft_payload: report ERANGE for too long offset and length
ratelimit: Fix data-races in ___ratelimit().
net: Fix a data-race around sysctl_tstamp_allow_data.
net: Fix a data-race around sysctl_net_busy_poll.
net: Fix a data-race around sysctl_net_busy_read.
net: Fix a data-race around sysctl_somaxconn.
ixgbe: stop resetting SYSTIME in ixgbe_ptp_start_cyclecounter
btrfs: check if root is readonly while setting security xattr
loop: Check for overflow while configuring loop
asm-generic: sections: refactor memory_intersects
mm/hugetlb: fix hugetlb not supporting softdirty tracking
mm: Force TLB flush for PFNMAP mappings before unlink_file_vma()
s390/mm: do not trigger write fault when vma does not allow VM_WRITE
x86/cpu: Add Tiger Lake to Intel family
x86/bugs: Add "unknown" reporting for MMIO Stale Data
kbuild: Fix include path in scripts/Makefile.modpost
Bluetooth: L2CAP: Fix build errors in some archs
media: pvrusb2: fix memory leak in pvr_probe
HID: hidraw: fix memory leak in hidraw_release()
fbdev: fb_pm2fb: Avoid potential divide by zero error
ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead
arm64: map FDT as RW for early_init_dt_scan()
s390/hypfs: avoid error message under KVM
netfilter: conntrack: NF_CONNTRACK_PROCFS should no longer default to y
mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse
kprobes: don't call disarm_kprobe() for disabled kprobes
Linux 4.9.327
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I6944c82cad25fbe5a35384f4ef0b7fb485203a05
commit 2555283eb40df89945557273121e9393ef9b542b upstream.
anon_vma->degree tracks the combined number of child anon_vmas and VMAs
that use the anon_vma as their ->anon_vma.
anon_vma_clone() then assumes that for any anon_vma attached to
src->anon_vma_chain other than src->anon_vma, it is impossible for it to
be a leaf node of the VMA tree, meaning that for such VMAs ->degree is
elevated by 1 because of a child anon_vma, meaning that if ->degree
equals 1 there are no VMAs that use the anon_vma as their ->anon_vma.
This assumption is wrong because the ->degree optimization leads to leaf
nodes being abandoned on anon_vma_clone() - an existing anon_vma is
reused and no new parent-child relationship is created. So it is
possible to reuse an anon_vma for one VMA while it is still tied to
another VMA.
This is an issue because is_mergeable_anon_vma() and its callers assume
that if two VMAs have the same ->anon_vma, the list of anon_vmas
attached to the VMAs is guaranteed to be the same. When this assumption
is violated, vma_merge() can merge pages into a VMA that is not attached
to the corresponding anon_vma, leading to dangling page->mapping
pointers that will be dereferenced during rmap walks.
Fix it by separately tracking the number of child anon_vmas and the
number of VMAs using the anon_vma as their ->anon_vma.
Fixes: 7a3ef208e6 ("mm: prevent endless growth of anon_vma hierarchy")
Cc: stable@kernel.org
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[manually fixed up different indentation in stable]
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jann Hornauthored and Greg Kroah-Hartmancommited 2022-09-05 10:23:58 +02:00
commit b67fbebd4cf980aecbcc750e1462128bffe8ae15 upstream.
Some drivers rely on having all VMAs through which a PFN might be
accessible listed in the rmap for correctness.
However, on X86, it was possible for a VMA with stale TLB entries
to not be listed in the rmap.
This was fixed in mainline with
commit b67fbebd4cf9 ("mmu_gather: Force tlb-flush VM_PFNMAP vmas"),
but that commit relies on preceding refactoring in
commit 18ba064e42df3 ("mmu_gather: Let there be one tlb_{start,end}_vma()
implementation") and commit 1e9fdf21a4339 ("mmu_gather: Remove per arch
tlb_{start,end}_vma()").
This patch provides equivalent protection without needing that
refactoring, by forcing a TLB flush between removing PTEs in
unmap_vmas() and the call to unlink_file_vma() in free_pgtables().
[This is a stable-specific rewrite of the upstream commit!]
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jann Hornauthored and Greg Kroah-Hartmancommited 2022-09-05 10:23:56 +02:00
commit f96f7a40874d7c746680c0b9f57cef2262ae551f upstream.
Patch series "mm/hugetlb: fix write-fault handling for shared mappings", v2.
I observed that hugetlb does not support/expect write-faults in shared
mappings that would have to map the R/O-mapped page writable -- and I
found two case where we could currently get such faults and would
erroneously map an anon page into a shared mapping.
Reproducers part of the patches.
I propose to backport both fixes to stable trees. The first fix needs a
small adjustment.
This patch (of 2):
Staring at hugetlb_wp(), one might wonder where all the logic for shared
mappings is when stumbling over a write-protected page in a shared
mapping. In fact, there is none, and so far we thought we could get away
with that because e.g., mprotect() should always do the right thing and
map all pages directly writable.
Looks like we were wrong:
--------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/mman.h>
#define HUGETLB_SIZE (2 * 1024 * 1024u)
static void clear_softdirty(void)
{
int fd = open("/proc/self/clear_refs", O_WRONLY);
const char *ctrl = "4";
int ret;
if (fd < 0) {
fprintf(stderr, "open(clear_refs) failed\n");
exit(1);
}
ret = write(fd, ctrl, strlen(ctrl));
if (ret != strlen(ctrl)) {
fprintf(stderr, "write(clear_refs) failed\n");
exit(1);
}
close(fd);
}
int main(int argc, char **argv)
{
char *map;
int fd;
fd = open("/dev/hugepages/tmp", O_RDWR | O_CREAT);
if (!fd) {
fprintf(stderr, "open() failed\n");
return -errno;
}
if (ftruncate(fd, HUGETLB_SIZE)) {
fprintf(stderr, "ftruncate() failed\n");
return -errno;
}
map = mmap(NULL, HUGETLB_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if (map == MAP_FAILED) {
fprintf(stderr, "mmap() failed\n");
return -errno;
}
*map = 0;
if (mprotect(map, HUGETLB_SIZE, PROT_READ)) {
fprintf(stderr, "mmprotect() failed\n");
return -errno;
}
clear_softdirty();
if (mprotect(map, HUGETLB_SIZE, PROT_READ|PROT_WRITE)) {
fprintf(stderr, "mmprotect() failed\n");
return -errno;
}
*map = 0;
return 0;
}
--------------------------------------------------------------------------
Above test fails with SIGBUS when there is only a single free hugetlb page.
# echo 1 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
# ./test
Bus error (core dumped)
And worse, with sufficient free hugetlb pages it will map an anonymous page
into a shared mapping, for example, messing up accounting during unmap
and breaking MAP_SHARED semantics:
# echo 2 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
# ./test
# cat /proc/meminfo | grep HugePages_
HugePages_Total: 2
HugePages_Free: 1
HugePages_Rsvd: 18446744073709551615
HugePages_Surp: 0
Reason in this particular case is that vma_wants_writenotify() will
return "true", removing VM_SHARED in vma_set_page_prot() to map pages
write-protected. Let's teach vma_wants_writenotify() that hugetlb does not
support softdirty tracking.
Link: https://lkml.kernel.org/r/20220811103435.188481-1-david@redhat.com
Link: https://lkml.kernel.org/r/20220811103435.188481-2-david@redhat.com
Fixes: 64e455079e ("mm: softdirty: enable write notifications on VMAs after VM_SOFTDIRTY cleared")
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Peter Feiner <pfeiner@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Jamie Liu <jamieliu@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org> [3.18+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David Hildenbrandauthored and Greg Kroah-Hartmancommited 2022-09-05 10:23:56 +02:00
-----BEGIN PGP SIGNATURE-----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=a0oQ
-----END PGP SIGNATURE-----
Merge 4.9.325 into android-4.9-q
Changes in 4.9.325
security,selinux,smack: kill security_task_wait hook
xen/gntdev: Ignore failure to unmap INVALID_GRANT_HANDLE
misc: rtsx_usb: fix use of dma mapped buffer for usb bulk transfer
misc: rtsx_usb: use separate command and response buffers
misc: rtsx_usb: set return value in rsp_buf alloc err path
xfrm: xfrm_policy: fix a possible double xfrm_pols_put() in xfrm_bundle_lookup()
power/reset: arm-versatile: Fix refcount leak in versatile_reboot_probe
perf/core: Fix data race between perf_event_set_output() and perf_mmap_close()
ip: Fix a data-race around sysctl_fwmark_reflect.
tcp/dccp: Fix a data-race around sysctl_tcp_fwmark_accept.
tcp: Fix a data-race around sysctl_tcp_probe_threshold.
i2c: cadence: Change large transfer count reset logic to be unconditional
igmp: Fix data-races around sysctl_igmp_llm_reports.
igmp: Fix a data-race around sysctl_igmp_max_memberships.
tcp: Fix a data-race around sysctl_tcp_notsent_lowat.
be2net: Fix buffer overflow in be_get_module_eeprom
Revert "Revert "char/random: silence a lockdep splat with printk()""
mm/mempolicy: fix uninit-value in mpol_rebind_policy()
bpf: Make sure mac_header was set before using it
ALSA: memalloc: Align buffer allocations in page size
tty: drivers/tty/, stop using tty_schedule_flip()
tty: the rest, stop using tty_schedule_flip()
tty: drop tty_schedule_flip()
tty: extract tty_flip_buffer_commit() from tty_flip_buffer_push()
tty: use new tty_insert_flip_string_and_push_buffer() in pty_write()
net: usb: ax88179_178a needs FLAG_SEND_ZLP
Linux 4.9.325
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ia0b4189557d82a2402819decbcf4eb3c7a204d86
-----BEGIN PGP SIGNATURE-----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=x3Jf
-----END PGP SIGNATURE-----
Merge 4.9.324 into android-4.9-q
Changes in 4.9.324
arm64: entry: Restore tramp_map_kernel ISB
ALSA: hda - Add fixup for Dell Latitidue E5430
xen/netback: avoid entering xenvif_rx_next_skb() with an empty rx queue
net: sock: tracing: Fix sock_exceed_buf_limit not to dereference stale pointer
ARM: 9213/1: Print message about disabled Spectre workarounds only once
nilfs2: fix incorrect masking of permission flags for symlinks
net: dsa: bcm_sf2: force pause link settings
ARM: 9209/1: Spectre-BHB: avoid pr_info() every time a CPU comes out of idle
cipso: Fix data-races around sysctl.
icmp: Fix data-races around sysctl.
ipv4: Fix data-races around sysctl_ip_dynaddr.
sfc: fix use after free when disabling sriov
sfc: fix kernel panic when creating VF
virtio_mmio: Add missing PM calls to freeze/restore
virtio_mmio: Restore guest page size on resume
cpufreq: pmac32-cpufreq: Fix refcount leak bug
net: tipc: fix possible refcount leak in tipc_sk_create()
NFC: nxp-nci: don't print header length mismatch on i2c error
ASoC: ops: Fix off by one in range control validation
ASoC: wm5110: Fix DRE control
x86: Clear .brk area at early boot
signal handling: don't use BUG_ON() for debugging
USB: serial: ftdi_sio: add Belimo device ids
usb: dwc3: gadget: Fix event pending check
tty: serial: samsung_tty: set dma burst_size to 1
serial: 8250: fix return error code in serial8250_request_std_resource()
mm: invalidate hwpoison page cache page in fault path
can: m_can: m_can_tx_handler(): fix use after free of skb
Linux 4.9.324
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ic45b3811fea105d8a51154c3684045ac3aa8bc01
commit e53ac7374e64dede04d745ff0e70ff5048378d1f upstream.
Sometimes the page offlining code can leave behind a hwpoisoned clean
page cache page. This can lead to programs being killed over and over
and over again as they fault in the hwpoisoned page, get killed, and
then get re-spawned by whatever wanted to run them.
This is particularly embarrassing when the page was offlined due to
having too many corrected memory errors. Now we are killing tasks due
to them trying to access memory that probably isn't even corrupted.
This problem can be avoided by invalidating the page from the page fault
handler, which already has a branch for dealing with these kinds of
pages. With this patch we simply pretend the page fault was successful
if the page was invalidated, return to userspace, incur another page
fault, read in the file from disk (to a new memory page), and then
everything works again.
Link: https://lkml.kernel.org/r/20220212213740.423efcea@imladris.surriel.com
Signed-off-by: Rik van Riel <riel@surriel.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[sudip: use int instead of vm_fault_t and adjust context]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rik van Rielauthored and Greg Kroah-Hartmancommited 2022-07-21 20:40:33 +02:00
* common/android-4.9-q:
Linux 4.9.321
swiotlb: skip swiotlb_bounce when orig_addr is zero
kexec_file: drop weak attribute from arch_kexec_apply_relocations[_add]
fdt: Update CRC check for rng-seed
xen: unexport __init-annotated xen_xlate_map_ballooned_pages()
drm: remove drm_fb_helper_modinit
powerpc/pseries: wire up rng during setup_arch()
modpost: fix section mismatch check for exported init/exit sections
ARM: cns3xxx: Fix refcount leak in cns3xxx_init
ARM: Fix refcount leak in axxia_boot_secondary
ARM: exynos: Fix refcount leak in exynos_map_pmu
ARM: dts: imx6qdl: correct PU regulator ramp delay
powerpc: Enable execve syscall exit tracepoint
xtensa: Fix refcount leak bug in time.c
xtensa: xtfpga: Fix refcount leak bug in setup
iio: trigger: sysfs: fix use-after-free on remove
iio: accel: mma8452: ignore the return value of reset operation
iio:accel:bma180: rearrange iio trigger get and register
usb: chipidea: udc: check request status before setting device address
iio: adc: vf610: fix conversion mode sysfs node name
igb: Make DMA faster when CPU is active on the PCIe link
MIPS: Remove repetitive increase irq_err_count
x86/xen: Remove undefined behavior in setup_features()
bonding: ARP monitor spams NETDEV_NOTIFY_PEERS notifiers
USB: serial: option: add Telit LE910Cx 0x1250 composition
random: quiet urandom warning ratelimit suppression message
dm era: commit metadata in postsuspend after worker stops
ata: libata: add qc->flags in ata_qc_complete_template tracepoint
random: schedule mix_interrupt_randomness() less often
vt: drop old FONT ioctls
BACKPORT: l2tp: fix race in pppol2tp_release with session object destroy
BACKPORT: l2tp: don't use inet_shutdown on ppp session destroy
Linux 4.9.320
tcp: drop the hash_32() part from the index calculation
tcp: increase source port perturb table to 2^16
tcp: dynamically allocate the perturb table used by source ports
tcp: add small random increments to the source port
tcp: use different parts of the port_offset for index and offset
secure_seq: use the 64 bits of the siphash for port offset calculation
tcp: add some entropy in __inet_hash_connect()
tcp: change source port randomizarion at connect() time
fuse: fix pipe buffer lifetime for direct_io
Reinstate some of "swiotlb: rework "fix info leak with DMA_FROM_DEVICE""
swiotlb: fix info leak with DMA_FROM_DEVICE
xprtrdma: fix incorrect header size calculations
s390/mm: use non-quiescing sske for KVM switch to keyed guest
l2tp: fix race in pppol2tp_release with session object destroy
l2tp: don't use inet_shutdown on ppp session destroy
ext4: add reserved GDT blocks check
ext4: make variable "count" signed
ext4: fix bug_on ext4_mb_use_inode_pa
serial: 8250: Store to lsr_save_flags after lsr read
usb: gadget: lpc32xx_udc: Fix refcount leak in lpc32xx_udc_probe
USB: serial: io_ti: add Agilent E5805A support
USB: serial: option: add support for Cinterion MV31 with new baseline
comedi: vmk80xx: fix expression for tx buffer size
irqchip/gic-v3: Iterate over possible CPUs by for_each_possible_cpu()
irqchip/gic/realview: Fix refcount leak in realview_gic_of_init
misc: atmel-ssc: Fix IRQ check in ssc_probe
pNFS: Don't keep retrying if the server replied NFS4ERR_LAYOUTUNAVAILABLE
random: credit cpu and bootloader seeds by default
net: ethernet: mtk_eth_soc: fix misuse of mem alloc interface netdev[napi]_alloc_frag
ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg
nfc: nfcmrvl: Fix memory leak in nfcmrvl_play_deferred
virtio-mmio: fix missing put_device() when vm_cmdline_parent registration failed
scsi: lpfc: Fix port stuck in bypassed state after LIP in PT2PT topology
scsi: vmw_pvscsi: Expand vcpuHint to 16 bits
ASoC: wm8962: Fix suspend while playing music
ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo()
ASoC: cs42l56: Correct typo in minimum level for SX volume controls
ASoC: cs42l52: Correct TLV for Bypass Volume
ASoC: cs53l30: Correct number of volume levels on SX controls
ASoC: cs42l52: Fix TLV scales for mixer controls
random: account for arch randomness in bits
random: mark bootloader randomness code as __init
random: avoid checking crng_ready() twice in random_init()
crypto: drbg - make reseeding from get_random_bytes() synchronous
crypto: drbg - always try to free Jitter RNG instance
crypto: drbg - move dynamic ->reseed_threshold adjustments to __drbg_seed()
crypto: drbg - track whether DRBG was seeded with !rng_is_initialized()
crypto: drbg - prepare for more fine-grained tracking of seeding state
crypto: drbg - always seeded with SP800-90B compliant noise source
crypto: drbg - add FIPS 140-2 CTRNG for noise source
Revert "random: use static branch for crng_ready()"
random: check for signals after page of pool writes
random: wire up fops->splice_{read,write}_iter()
random: convert to using fops->write_iter()
random: move randomize_page() into mm where it belongs
random: move initialization functions out of hot pages
random: use proper return types on get_random_{int,long}_wait()
random: remove extern from functions in header
random: use static branch for crng_ready()
random: credit architectural init the exact amount
random: handle latent entropy and command line from random_init()
random: use proper jiffies comparison macro
random: remove ratelimiting for in-kernel unseeded randomness
random: avoid initializing twice in credit race
random: use symbolic constants for crng_init states
siphash: use one source of truth for siphash permutations
random: help compiler out with fast_mix() by using simpler arguments
random: do not use input pool from hard IRQs
random: order timer entropy functions below interrupt functions
random: do not pretend to handle premature next security model
random: do not use batches when !crng_ready()
random: insist on random_get_entropy() existing in order to simplify
uapi: rename ext2_swab() to swab() and share globally in swab.h
xtensa: use fallback for random_get_entropy() instead of zero
sparc: use fallback for random_get_entropy() instead of zero
um: use fallback for random_get_entropy() instead of zero
x86/tsc: Use fallback for random_get_entropy() instead of zero
nios2: use fallback for random_get_entropy() instead of zero
arm: use fallback for random_get_entropy() instead of zero
mips: use fallback for random_get_entropy() instead of just c0 random
m68k: use fallback for random_get_entropy() instead of zero
timekeeping: Add raw clock fallback for random_get_entropy()
powerpc: define get_cycles macro for arch-override
alpha: define get_cycles macro for arch-override
parisc: define get_cycles macro for arch-override
s390: define get_cycles macro for arch-override
ia64: define get_cycles macro for arch-override
init: call time_init() before rand_initialize()
random: fix sysctl documentation nits
random: document crng_fast_key_erasure() destination possibility
random: make random_get_entropy() return an unsigned long
random: check for signals every PAGE_SIZE chunk of /dev/[u]random
random: check for signal_pending() outside of need_resched() check
random: do not allow user to keep crng key around on stack
random: do not split fast init input in add_hwgenerator_randomness()
random: mix build-time latent entropy into pool at init
random: re-add removed comment about get_random_{u32,u64} reseeding
random: treat bootloader trust toggle the same way as cpu trust toggle
random: skip fast_init if hwrng provides large chunk of entropy
random: check for signal and try earlier when generating entropy
random: reseed more often immediately after booting
random: make consistent usage of crng_ready()
random: use SipHash as interrupt entropy accumulator
random: replace custom notifier chain with standard one
random: don't let 644 read-only sysctls be written to
random: give sysctl_random_min_urandom_seed a more sensible value
random: do crng pre-init loading in worker rather than irq
random: unify cycles_t and jiffies usage and types
random: cleanup UUID handling
random: only wake up writers after zap if threshold was passed
random: round-robin registers as ulong, not u32
random: clear fast pool, crng, and batches in cpuhp bring up
random: pull add_hwgenerator_randomness() declaration into random.h
hwrng: remember rng chosen by user
hwrng: use rng source with best quality
hwrng: core - remove unused PFX macro
hwrng: core - Move hwrng miscdev minor number to include/linux/miscdevice.h
hwrng: core - Rewrite the header
hwrng: core - rewrite better comparison to NULL
hwrng: core - do not use multiple blank lines
random: check for crng_init == 0 in add_device_randomness()
random: unify early init crng load accounting
random: do not take pool spinlock at boot
random: defer fast pool mixing to worker
workqueue: make workqueue available early during boot
random: rewrite header introductory comment
random: group sysctl functions
random: group userspace read/write functions
random: group entropy collection functions
random: group entropy extraction functions
random: group initialization wait functions
random: remove whitespace and reorder includes
random: remove useless header comment
random: introduce drain_entropy() helper to declutter crng_reseed()
random: deobfuscate irq u32/u64 contributions
random: add proper SPDX header
random: remove unused tracepoints
random: remove ifdef'd out interrupt bench
random: tie batched entropy generation to base_crng generation
random: zero buffer after reading entropy from userspace
random: remove outdated INT_MAX >> 6 check in urandom_read()
random: use hash function for crng_slow_load()
random: absorb fast pool into input pool after fast load
random: do not xor RDRAND when writing into /dev/random
random: ensure early RDSEED goes through mixer on init
random: inline leaves of rand_initialize()
random: use RDSEED instead of RDRAND in entropy extraction
random: fix locking in crng_fast_load()
random: remove batched entropy locking
random: remove use_input_pool parameter from crng_reseed()
random: make credit_entropy_bits() always safe
random: always wake up entropy writers after extraction
random: use linear min-entropy accumulation crediting
random: simplify entropy debiting
random: use computational hash for entropy extraction
random: only call crng_finalize_init() for primary_crng
random: access primary_pool directly rather than through pointer
random: continually use hwgenerator randomness
random: simplify arithmetic function flow in account()
random: access input_pool_data directly rather than through pointer
random: cleanup fractional entropy shift constants
random: prepend remaining pool constants with POOL_
random: de-duplicate INPUT_POOL constants
random: remove unused OUTPUT_POOL constants
random: rather than entropy_store abstraction, use global
random: try to actively add entropy rather than passively wait for it
random: remove unused extract_entropy() reserved argument
random: remove incomplete last_data logic
random: cleanup integer types
crypto: chacha20 - Fix chacha20_block() keystream alignment (again)
random: cleanup poolinfo abstraction
random: fix typo in comments
random: don't reset crng_init_cnt on urandom_read()
random: avoid superfluous call to RDRAND in CRNG extraction
random: early initialization of ChaCha constants
random: initialize ChaCha20 constants with correct endianness
random: use IS_ENABLED(CONFIG_NUMA) instead of ifdefs
random: harmonize "crng init done" messages
random: mix bootloader randomness into pool
random: do not re-init if crng_reseed completes before primary init
random: do not sign extend bytes for rotation when mixing
random: use BLAKE2s instead of SHA1 in extraction
random: remove unused irq_flags argument from add_interrupt_randomness()
random: document add_hwgenerator_randomness() with other input functions
crypto: blake2s - adjust include guard naming
crypto: blake2s - include <linux/bug.h> instead of <asm/bug.h>
MAINTAINERS: co-maintain random.c
random: remove dead code left over from blocking pool
random: avoid arch_get_random_seed_long() when collecting IRQ randomness
random: add arch_get_random_*long_early()
powerpc: Use bool in archrandom.h
linux/random.h: Mark CONFIG_ARCH_RANDOM functions __must_check
linux/random.h: Use false with bool
linux/random.h: Remove arch_has_random, arch_has_random_seed
powerpc: Remove arch_has_random, arch_has_random_seed
x86: Remove arch_has_random, arch_has_random_seed
random: avoid warnings for !CONFIG_NUMA builds
random: split primary/secondary crng init paths
random: remove some dead code of poolinfo
random: fix typo in add_timer_randomness()
random: Add and use pr_fmt()
random: convert to ENTROPY_BITS for better code readability
random: remove unnecessary unlikely()
random: remove kernel.random.read_wakeup_threshold
random: delete code to pull data into pools
random: remove the blocking pool
random: fix crash on multiple early calls to add_bootloader_randomness()
random: make /dev/random be almost like /dev/urandom
random: ignore GRND_RANDOM in getentropy(2)
random: add GRND_INSECURE to return best-effort non-cryptographic bytes
random: Add a urandom_read_nowait() for random APIs that don't warn
random: Don't wake crng_init_wait when crng_init == 1
lib/crypto: sha1: re-roll loops to reduce code size
lib/crypto: blake2s: move hmac construction into wireguard
crypto: blake2s - generic C library implementation and selftest
crypto: Deduplicate le32_to_cpu_array() and cpu_to_le32_array()
Revert "hwrng: core - Freeze khwrng thread during suspend"
char/random: Add a newline at the end of the file
random: Use wait_event_freezable() in add_hwgenerator_randomness()
fdt: add support for rng-seed
random: Support freezable kthreads in add_hwgenerator_randomness()
random: fix soft lockup when trying to read from an uninitialized blocking pool
latent_entropy: avoid build error when plugin cflags are not set
random: document get_random_int() family
random: move rand_initialize() earlier
random: only read from /dev/random after its pool has received 128 bits
drivers/char/random.c: make primary_crng static
drivers/char/random.c: remove unused stuct poolinfo::poolbits
drivers/char/random.c: constify poolinfo_table
random: make CPU trust a boot parameter
random: Make crng state queryable
random: remove preempt disabled region
random: add a config option to trust the CPU's hwrng
random: Return nbytes filled from hw RNG
random: Fix whitespace pre random-bytes work
drivers/char/random.c: remove unused dont_count_entropy
random: optimize add_interrupt_randomness
random: always fill buffer in get_random_bytes_wait
crypto: chacha20 - Fix keystream alignment for chacha20_block()
random: fix data race on crng_node_pool
random: always use batched entropy for get_random_u{32,64}
Revert "char/random: silence a lockdep splat with printk()"
char/random: silence a lockdep splat with printk()
random: add a spinlock_t to struct batched_entropy
random: rate limit unseeded randomness warnings
random: fix possible sleeping allocation from irq context
random: set up the NUMA crng instances after the CRNG is fully initialized
random: use a different mixing algorithm for add_device_randomness()
random: fix warning message on ia64 and parisc
random: reorder READ_ONCE() in get_random_uXX
random: suppress spammy warnings about unseeded randomness
random: do not ignore early device randomness
random: warn when kernel uses unseeded randomness
random: add get_random_{bytes,u32,u64,int,long,once}_wait family
random: add wait_for_random_bytes() API
random: silence compiler warnings and fix race
random: invalidate batched entropy after crng init
random: move random_min_urandom_seed into CONFIG_SYSCTL ifdef block
random: convert get_random_int/long into get_random_u32/u64
random: fix comment for unused random_min_urandom_seed
random: remove variable limit
random: remove stale urandom_init_wait
random: remove stale maybe_reseed_primary_crng
9p: missing chunk of "fs/9p: Don't update file type when updating file attributes"
Linux 4.9.319
x86/speculation/mmio: Print SMT warning
KVM: x86/speculation: Disable Fill buffer clear within guests
x86/speculation/mmio: Reuse SRBDS mitigation for SBDS
x86/speculation/srbds: Update SRBDS mitigation selection
x86/speculation/mmio: Add sysfs reporting for Processor MMIO Stale Data
x86/speculation/mmio: Enable CPU Fill buffer clearing on idle
x86/bugs: Group MDS, TAA & Processor MMIO Stale Data mitigations
x86/speculation/mmio: Add mitigation for Processor MMIO Stale Data
x86/speculation: Add a common function for MD_CLEAR mitigation update
x86/speculation/mmio: Enumerate Processor MMIO Stale Data bug
Documentation: Add documentation for Processor MMIO Stale Data
x86/cpu: Add another Alder Lake CPU to the Intel family
x86/cpu: Add Lakefield, Alder Lake and Rocket Lake models to the to Intel CPU family
x86/cpu: Add Comet Lake to the Intel CPU models header
x86/CPU: Add more Icelake model numbers
x86/CPU: Add Icelake model number
x86/cpu: Add Cannonlake to Intel family
x86/cpu: Add Jasper Lake to Intel family
cpu/speculation: Add prototype for cpu_show_srbds()
x86/cpu: Add Elkhart Lake to Intel family
ANDROID: arch: fix backported syscall numbers
Linux 4.9.318
tcp: fix tcp_mtup_probe_success vs wrong snd_cwnd
PCI: qcom: Fix unbalanced PHY init on probe errors
mtd: cfi_cmdset_0002: Use chip_ready() for write on S29GL064N
mtd: cfi_cmdset_0002: Move and rename chip_check/chip_ready/chip_good_for_write
powerpc/32: Fix overread/overwrite of thread_struct via ptrace
Input: bcm5974 - set missing URB_NO_TRANSFER_DMA_MAP urb flag
nfc: st21nfca: fix memory leaks in EVT_TRANSACTION handling
nfc: st21nfca: fix incorrect validating logic in EVT_TRANSACTION
ata: libata-transport: fix {dma|pio|xfer}_mode sysfs files
cifs: return errors during session setup during reconnects
ALSA: hda/conexant - Fix loopback issue with CX20632
vringh: Fix loop descriptors check in the indirect cases
nodemask: Fix return values to be unsigned
modpost: fix undefined behavior of is_arm_mapping_symbol()
drm/radeon: fix a possible null pointer dereference
Revert "net: af_key: add check for pfkey_broadcast in function pfkey_process"
md: protect md_unregister_thread from reentrancy
serial: msm_serial: disable interrupts in __msm_console_write()
staging: rtl8712: fix uninit-value in r871xu_drv_init()
clocksource/drivers/sp804: Avoid error on multiple instances
misc: rtsx: set NULL intfdata when probe fails
usb: dwc2: gadget: don't reset gadget's driver->bus
USB: hcd-pci: Fully suspend across freeze/thaw cycle
drivers: usb: host: Fix deadlock in oxu_bus_suspend()
drivers: tty: serial: Fix deadlock in sa1100_set_termios()
USB: host: isp116x: check return value after calling platform_get_resource()
drivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop()
tty: Fix a possible resource leak in icom_probe
tty: synclink_gt: Fix null-pointer-dereference in slgt_clean()
lkdtm/usercopy: Expand size of "out of frame" object
iio: dummy: iio_simple_dummy: check the return value of kstrdup()
net: altera: Fix refcount leak in altera_tse_mdio_create
net: xfrm: unexport __init-annotated xfrm4_protocol_init()
SUNRPC: Fix the calculation of xdr->end in xdr_get_next_encode_buffer()
net/mlx4_en: Fix wrong return value on ioctl EEPROM query failure
ata: pata_octeon_cf: Fix refcount leak in octeon_cf_probe
net: fix nla_strcmp to handle more then one trailing null character
video: fbdev: pxa3xx-gcu: release the resources correctly in pxa3xx_gcu_probe/remove()
m68knommu: fix undefined reference to `_init_sp'
m68knommu: set ZERO_PAGE() to the allocated zeroed page
i2c: cadence: Increase timeout per message if necessary
tracing: Avoid adding tracer option before update_tracer_options
tcp: tcp_rtx_synack() can be called from process context
jffs2: fix memory leak in jffs2_do_fill_super
modpost: fix removing numeric suffixes
net: ethernet: mtk_eth_soc: out of bounds read in mtk_hwlro_get_fdir_entry()
clocksource/drivers/oxnas-rps: Fix irq_of_parse_and_map() return value
firmware: dmi-sysfs: Fix memory leak in dmi_sysfs_register_handle
serial: st-asc: Sanitize CSIZE and correct PARENB for CS7
serial: sh-sci: Don't allow CS5-6
serial: txx9: Don't allow CS5-6
serial: digicolor-usart: Don't allow CS5-6
serial: meson: acquire port->lock in startup()
rtc: mt6397: check return value after calling platform_get_resource()
rpmsg: qcom_smd: Fix irq_of_parse_and_map() return value
pwm: lp3943: Fix duty calculation in case period was clamped
USB: storage: karma: fix rio_karma_init return
usb: usbip: add missing device lock on tweak configuration cmd
usb: usbip: fix a refcount leak in stub_probe()
staging: greybus: codecs: fix type confusion of list iterator variable
pcmcia: db1xxx_ss: restrict to MIPS_DB1XXX boards
netfilter: nf_tables: disallow non-stateful expression in sets earlier
MIPS: IP27: Remove incorrect `cpu_has_fpu' override
RDMA/rxe: Generate a completion for unsupported/invalid opcode
dt-bindings: gpio: altera: correct interrupt-cells
docs/conf.py: Cope with removal of language=None in Sphinx 5.0.0
gma500: fix an incorrect NULL check on list iterator
carl9170: tx: fix an incorrect use of list iterator
ASoC: rt5514: Fix event generation for "DSP Voice Wake Up" control
rtl818x: Prevent using not initialized queues
hugetlb: fix huge_pmd_unshare address update
nodemask.h: fix compilation error with GCC12
iommu/msm: Fix an incorrect NULL check on list iterator
um: Fix out-of-bounds read in LDT setup
um: chan_user: Fix winch_tramp() return value
mac80211: upgrade passive scan to active scan on DFS channels after beacon rx
irqchip: irq-xtensa-mx: fix initial IRQ affinity
irqchip/armada-370-xp: Do not touch Performance Counter Overflow on A375, A38x, A39x
RDMA/hfi1: Fix potential integer multiplication overflow errors
md: fix an incorrect NULL check in md_reload_sb
md: fix an incorrect NULL check in does_sb_need_changing
drm/bridge: analogix_dp: Grab runtime PM reference for DP-AUX
drm/amdgpu/cs: make commands with 0 chunks illegal behaviour.
scsi: ufs: qcom: Add a readl() to make sure ref_clk gets enabled
scsi: dc395x: Fix a missing check on list iterator
ocfs2: dlmfs: fix error handling of user_dlm_destroy_lock
dlm: fix missing lkb refcount handling
dlm: fix plock invalid read
ext4: verify dir block before splitting it
ext4: fix bug_on in ext4_writepages
ext4: fix use-after-free in ext4_rename_dir_prepare
fs-writeback: writeback_sb_inodes：Recalculate 'wrote' according skipped pages
iwlwifi: mvm: fix assert 1F04 upon reconfig
wifi: mac80211: fix use-after-free in chanctx code
iommu/amd: Increase timeout waiting for GA log enablement
video: fbdev: clcdfb: Fix refcount leak in clcdfb_of_vram_setup
Input: sparcspkr - fix refcount leak in bbc_beep_probe
tty: fix deadlock caused by calling printk() under tty_port->lock
powerpc/4xx/cpm: Fix return value of __setup() handler
powerpc/idle: Fix return value of __setup() handler
powerpc/8xx: export 'cpm_setbrg' for modules
drivers/base/node.c: fix compaction sysfs file leak
scsi: fcoe: Fix Wstringop-overflow warnings in fcoe_wwn_from_mac()
mfd: ipaq-micro: Fix error check return value of platform_get_irq()
soc: qcom: smsm: Fix missing of_node_put() in smsm_parse_ipc
soc: qcom: smp2p: Fix missing of_node_put() in smp2p_parse_ipc
rxrpc: Don't try to resend the request if we're receiving the reply
rxrpc: Fix listen() setting the bar too high for the prealloc rings
ASoC: wm2000: fix missing clk_disable_unprepare() on error in wm2000_anc_transition()
sctp: read sk->sk_bound_dev_if once in sctp_rcv()
m68k: math-emu: Fix dependencies of math emulation support
Bluetooth: fix dangling sco_conn and use-after-free in sco_sock_timeout
media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init
media: exynos4-is: Change clk_disable to clk_disable_unprepare
regulator: pfuze100: Fix refcount leak in pfuze_parse_regulators_dt
ASoC: mxs-saif: Fix refcount leak in mxs_saif_probe
media: uvcvideo: Fix missing check to determine if element is found in list
drm/msm: return an error pointer in msm_gem_prime_get_sg_table()
x86/mm: Cleanup the control_va_addr_alignment() __setup handler
drm/rockchip: vop: fix possible null-ptr-deref in vop_bind()
drm/msm/hdmi: check return value after calling platform_get_resource_byname()
drm/msm/dsi: fix error checks and return values for DSI xmit functions
x86/pm: Fix false positive kmemleak report in msr_build_context()
inotify: show inotify mask flags in proc fdinfo
ath9k_htc: fix potential out of bounds access with invalid rxstatus->rs_keyix
spi: img-spfi: Fix pm_runtime_get_sync() error checking
HID: hid-led: fix maximum brightness for Dream Cheeky
NFC: NULL out the dev->rfkill to prevent UAF
spi: spi-ti-qspi: Fix return value handling of wait_for_completion_timeout
drm/mediatek: Fix mtk_cec_mask()
x86/delay: Fix the wrong asm constraint in delay_loop()
ASoC: mediatek: Fix error handling in mt8173_max98090_dev_probe
drm: fix EDID struct for old ARM OABI format
macintosh/via-pmu: Fix build failure when CONFIG_INPUT is disabled
powerpc/xics: fix refcount leak in icp_opal_init()
PCI: Avoid pci_dev_lock() AB/BA deadlock with sriov_numvfs_store()
ARM: hisi: Add missing of_node_put after of_find_compatible_node
ARM: dts: exynos: add atmel,24c128 fallback to Samsung EEPROM
ARM: versatile: Add missing of_node_put in dcscb_init
fat: add ratelimit to fat*_ent_bread()
ARM: OMAP1: clock: Fix UART rate reporting algorithm
fs: jfs: fix possible NULL pointer dereference in dbFree()
eth: tg3: silence the GCC 12 array-bounds warning
rxrpc: Return an error to sendmsg if call failed
media: exynos4-is: Fix compile warning
ASoC: rt5645: Fix errorenous cleanup order
nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags
openrisc: start CPU timer early in boot
ipmi:ssif: Check for NULL msg when handling events and messages
dma-debug: change allocation mode from GFP_NOWAIT to GFP_ATIOMIC
ASoC: dapm: Don't fold register value changes into notifications
ipv6: Don't send rs packets to the interface of ARPHRD_TUNNEL
drm/amd/pm: fix the compile warning
scsi: megaraid: Fix error check return value of register_chrdev()
media: cx25821: Fix the warning when removing the module
ath9k: fix QCA9561 PA bias level
drm/amd/pm: fix double free in si_parse_power_table()
ALSA: jack: Access input_dev under mutex
ACPICA: Avoid cache flush inside virtual machines
ipw2x00: Fix potential NULL dereference in libipw_xmit()
b43: Fix assigning negative value to unsigned variable
b43legacy: Fix assigning negative value to unsigned variable
mwifiex: add mutex lock for call in mwifiex_dfs_chan_sw_work_queue
drm/virtio: fix NULL pointer dereference in virtio_gpu_conn_get_modes
btrfs: add "0x" prefix for unsupported optional features
ptrace: Reimplement PTRACE_KILL by always sending SIGKILL
ptrace/xtensa: Replace PT_SINGLESTEP with TIF_SINGLESTEP
USB: new quirk for Dell Gen 2 devices
BACKPORT: psi: Fix uaf issue when psi trigger is destroyed while being polled
Conflicts:
arch/arm/include/asm/unistd.h
arch/arm/kernel/calls.S
drivers/char/Kconfig
drivers/char/random.c
fs/fat/fatent.c
include/linux/random.h
init/main.c
kernel/cpu.c
lib/Makefile
Change-Id: I43d99223205dec1f47e87016818be23514a62cba
commit eeaa345e128515135ccb864c04482180c08e3259 upstream.
The fastpath in slab_alloc_node() assumes that c->slab is stable as long as
the TID stays the same. However, two places in __slab_alloc() currently
don't update the TID when deactivating the CPU slab.
If multiple operations race the right way, this could lead to an object
getting lost; or, in an even more unlikely situation, it could even lead to
an object being freed onto the wrong slab's freelist, messing up the
`inuse` counter and eventually causing a page to be freed to the page
allocator while it still contains slab objects.
(I haven't actually tested these cases though, this is just based on
looking at the code. Writing testcases for this stuff seems like it'd be
a pain...)
The race leading to state inconsistency is (all operations on the same CPU
and kmem_cache):
- task A: begin do_slab_free():
- read TID
- read pcpu freelist (==NULL)
- check `slab == c->slab` (true)
- [PREEMPT A->B]
- task B: begin slab_alloc_node():
- fastpath fails (`c->freelist` is NULL)
- enter __slab_alloc()
- slub_get_cpu_ptr() (disables preemption)
- enter ___slab_alloc()
- take local_lock_irqsave()
- read c->freelist as NULL
- get_freelist() returns NULL
- write `c->slab = NULL`
- drop local_unlock_irqrestore()
- goto new_slab
- slub_percpu_partial() is NULL
- get_partial() returns NULL
- slub_put_cpu_ptr() (enables preemption)
- [PREEMPT B->A]
- task A: finish do_slab_free():
- this_cpu_cmpxchg_double() succeeds()
- [CORRUPT STATE: c->slab==NULL, c->freelist!=NULL]
From there, the object on c->freelist will get lost if task B is allowed to
continue from here: It will proceed to the retry_load_slab label,
set c->slab, then jump to load_freelist, which clobbers c->freelist.
But if we instead continue as follows, we get worse corruption:
- task A: run __slab_free() on object from other struct slab:
- CPU_PARTIAL_FREE case (slab was on no list, is now on pcpu partial)
- task A: run slab_alloc_node() with NUMA node constraint:
- fastpath fails (c->slab is NULL)
- call __slab_alloc()
- slub_get_cpu_ptr() (disables preemption)
- enter ___slab_alloc()
- c->slab is NULL: goto new_slab
- slub_percpu_partial() is non-NULL
- set c->slab to slub_percpu_partial(c)
- [CORRUPT STATE: c->slab points to slab-1, c->freelist has objects
from slab-2]
- goto redo
- node_match() fails
- goto deactivate_slab
- existing c->freelist is passed into deactivate_slab()
- inuse count of slab-1 is decremented to account for object from
slab-2
At this point, the inuse count of slab-1 is 1 lower than it should be.
This means that if we free all allocated objects in slab-1 except for one,
SLUB will think that slab-1 is completely unused, and may free its page,
leading to use-after-free.
Fixes: c17dda40a6 ("slub: Separate out kmem_cache_cpu processing from deactivate_slab")
Fixes: 03e404af26 ("slub: fast release on full slab")
Cc: stable@vger.kernel.org
Signed-off-by: Jann Horn <jannh@google.com>
Acked-by: Christoph Lameter <cl@linux.com>
Acked-by: David Rientjes <rientjes@google.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Link: https://lore.kernel.org/r/20220608182205.2945720-1-jannh@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jann Hornauthored and Greg Kroah-Hartmancommited 2022-07-12 16:26:24 +02:00
Joel Fernandes
authored and
Sorayukii
commited 
Rik van Riel
authored and
Andrii Nakryiko
authored and
Daniel Borkmann
authored and
Matthew Wilcox
authored and
Souptick Joarder
authored and
Shakeel Butt
authored and
Tejun Heo
authored and
Yousef Algadri
authored and
Angelo G. Del Regno
authored and
David Howells
authored and
Nolen Johnson
commited 
Alexander Martinz
commited 
Greg Kroah-Hartman
commited 
Jann Horn
authored and
Greg Kroah-Hartman
commited 
Michael Bestas
commited 
Linus Torvalds
authored and
Austin Kim
authored and
Alexander Potapenko
authored and
Rik van Riel
authored and
Maurizio Lombardi
authored and
Chao Yu
authored and
Yee Lee
authored and
David Hildenbrand
authored and
Wang Cheng
authored and