Update LZ4 compression library to the latest stable version 1.10.0
for improved performance and bug fixes.
Commit:
a049f5b4bd (diff-f27c1e4d68)
Changes:
- Upgrade LZ4 from [previous version] to 1.10.0
- Remove lz4hc (high compression) variant to simplify codebase
- Update API calls to match new LZ4 interface
- Maintain compatibility with existing ZRAM integration
Benefits:
- Enhanced compression/decompression performance
- Reduced memory usage during compression
- Latest security fixes and stability improvements
- Simplified maintenance without lz4hc complexity
The removal of lz4hc reduces kernel size while standard LZ4 provides
sufficient compression performance for most use cases.
Co-authored-by: JackA1ltman <cs2dtzq@163.com>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
JackA1ltmanauthored and Sorayukiicommited 2026-05-15 18:07:05 +07:00
Since error-injection framework is not limited to be used
by kprobes, nor bpf. Other kernel subsystems can use it
freely for checking safeness of error-injection, e.g.
livepatch, ftrace etc.
So this separate error-injection framework from kprobes.
Some differences has been made:
- "kprobe" word is removed from any APIs/structures.
- BPF_ALLOW_ERROR_INJECTION() is renamed to
ALLOW_ERROR_INJECTION() since it is not limited for BPF too.
- CONFIG_FUNCTION_ERROR_INJECTION is the config item of this
feature. It is automatically enabled if the arch supports
error injection feature for kprobe or ftrace etc.
Change-Id: I9db8ce0b1e8672227c2387c029acd83a5f3da34d
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Masami Hiramatsuauthored and Sorayukiicommited 2026-05-15 17:56:33 +07:00
Many subsystems will not use refcount_t unless there is a way to build the
kernel so that there is no regression in speed compared to atomic_t. This
adds CONFIG_REFCOUNT_FULL to enable the full refcount_t implementation
which has the validation but is slightly slower. When not enabled,
refcount_t uses the basic unchecked atomic_t routines, which results in
no code changes compared to just using atomic_t directly.
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: David Windsor <dwindsor@gmail.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Hans Liljestrand <ishkamiel@gmail.com>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Cc: Jann Horn <jannh@google.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Serge E. Hallyn <serge@hallyn.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: arozansk@redhat.com
Cc: axboe@kernel.dk
Cc: linux-arch <linux-arch@vger.kernel.org>
Link: http://lkml.kernel.org/r/20170621200026.GA115679@beast
Signed-off-by: Ingo Molnar <mingo@kernel.org>
UPSTREAM: locking/refcounts: Add missing kernel.h header to have UINT_MAX defined
Fix header dependency.
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1487855374-21993-1-git-send-email-elena.reshetova@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
UPSTREAM: locking/refcount: Add refcount_t API kernel-doc comments
Signed-off-by: David Windsor <dwindsor@gmail.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: elena.reshetova@intel.com
Cc: kernel-hardening@lists.openwall.com
Link: http://lkml.kernel.org/r/1489160052-20293-1-git-send-email-dwindsor@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
UPSTREAM: locking/refcounts: Change WARN() to WARN_ONCE()
Linus noticed that the new refcount.h APIs used WARN(), which would turn
into a dmesg DoS if it triggers frequently on some buggy driver.
So make sure we only warn once. These warnings are never supposed to happen,
so it's typically not a problem to lose subsequent warnings.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/CA+55aFzbYUTZ=oqZ2YgDjY0C2_n6ODhTfqj6V+m5xWmDxsuB0w@mail.gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
UPSTREAM: locking/refcounts: Use atomic_try_cmpxchg()
Generates better code (GCC-6.2.1):
text filename
1576 defconfig-build/lib/refcount.o.pre
1488 defconfig-build/lib/refcount.o.post
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
UPSTREAM: refcount: change EXPORT_SYMBOL markings
Now that kref is using the refcount apis, the _GPL markings are getting
exported to places that it previously wasn't. Now kref.h is GPLv2
licensed, so any non-GPL code using it better be talking to some
lawyers, but changing api markings isn't considered "nice", so let's fix
this up.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
UPSTREAM: locking/refcounts: Out-of-line everything
Linus asked to please make this real C code.
And since size then isn't an issue what so ever anymore, remove the
debug knob and make all WARN()s unconditional.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dwindsor@gmail.com
Cc: elena.reshetova@intel.com
Cc: gregkh@linuxfoundation.org
Cc: ishkamiel@gmail.com
Cc: keescook@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
UPSTREAM: locking/refcount: Remove the half-implemented refcount_sub() API
CONFIG_REFCOUNT_FULL=y (correctly) does not provide a refcount_sub(),
which should not be part of proper refcount design patterns.
Remove the erroneous extern and the later !CONFIG_REFCOUNT_FULL
accidental implementation.
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 29dee3c03abc ("locking/refcounts: Out-of-line everything")
Link: http://lkml.kernel.org/r/20170701180129.GA17405@beast
Signed-off-by: Ingo Molnar <mingo@kernel.org>
UPSTREAM: locking/refcounts, x86/asm: Implement fast refcount overflow protection
This implements refcount_t overflow protection on x86 without a noticeable
performance impact, though without the fuller checking of REFCOUNT_FULL.
This is done by duplicating the existing atomic_t refcount implementation
but with normally a single instruction added to detect if the refcount
has gone negative (e.g. wrapped past INT_MAX or below zero). When detected,
the handler saturates the refcount_t to INT_MIN / 2. With this overflow
protection, the erroneous reference release that would follow a wrap back
to zero is blocked from happening, avoiding the class of refcount-overflow
use-after-free vulnerabilities entirely.
Only the overflow case of refcounting can be perfectly protected, since
it can be detected and stopped before the reference is freed and left to
be abused by an attacker. There isn't a way to block early decrements,
and while REFCOUNT_FULL stops increment-from-zero cases (which would
be the state _after_ an early decrement and stops potential double-free
conditions), this fast implementation does not, since it would require
the more expensive cmpxchg loops. Since the overflow case is much more
common (e.g. missing a "put" during an error path), this protection
provides real-world protection. For example, the two public refcount
overflow use-after-free exploits published in 2016 would have been
rendered unexploitable:
http://perception-point.io/2016/01/14/analysis-and-exploitation-of-a-linux-kernel-vulnerability-cve-2016-0728/http://cyseclabs.com/page?n=02012016
This implementation does, however, notice an unchecked decrement to zero
(i.e. caller used refcount_dec() instead of refcount_dec_and_test() and it
resulted in a zero). Decrements under zero are noticed (since they will
have resulted in a negative value), though this only indicates that a
use-after-free may have already happened. Such notifications are likely
avoidable by an attacker that has already exploited a use-after-free
vulnerability, but it's better to have them reported than allow such
conditions to remain universally silent.
On first overflow detection, the refcount value is reset to INT_MIN / 2
(which serves as a saturation value) and a report and stack trace are
produced. When operations detect only negative value results (such as
changing an already saturated value), saturation still happens but no
notification is performed (since the value was already saturated).
On the matter of races, since the entire range beyond INT_MAX but before
0 is negative, every operation at INT_MIN / 2 will trap, leaving no
overflow-only race condition.
As for performance, this implementation adds a single "js" instruction
to the regular execution flow of a copy of the standard atomic_t refcount
operations. (The non-"and_test" refcount_dec() function, which is uncommon
in regular refcount design patterns, has an additional "jz" instruction
to detect reaching exactly zero.) Since this is a forward jump, it is by
default the non-predicted path, which will be reinforced by dynamic branch
prediction. The result is this protection having virtually no measurable
change in performance over standard atomic_t operations. The error path,
located in .text.unlikely, saves the refcount location and then uses UD0
to fire a refcount exception handler, which resets the refcount, handles
reporting, and returns to regular execution. This keeps the changes to
.text size minimal, avoiding return jumps and open-coded calls to the
error reporting routine.
Example assembly comparison:
refcount_inc() before:
.text:
ffffffff81546149: f0 ff 45 f4 lock incl -0xc(%rbp)
refcount_inc() after:
.text:
ffffffff81546149: f0 ff 45 f4 lock incl -0xc(%rbp)
ffffffff8154614d: 0f 88 80 d5 17 00 js ffffffff816c36d3
...
.text.unlikely:
ffffffff816c36d3: 48 8d 4d f4 lea -0xc(%rbp),%rcx
ffffffff816c36d7: 0f ff (bad)
These are the cycle counts comparing a loop of refcount_inc() from 1
to INT_MAX and back down to 0 (via refcount_dec_and_test()), between
unprotected refcount_t (atomic_t), fully protected REFCOUNT_FULL
(refcount_t-full), and this overflow-protected refcount (refcount_t-fast):
2147483646 refcount_inc()s and 2147483647 refcount_dec_and_test()s:
cycles protections
atomic_t 82249267387 none
refcount_t-fast 82211446892 overflow, untested dec-to-zero
refcount_t-full 144814735193 overflow, untested dec-to-zero, inc-from-zero
This code is a modified version of the x86 PAX_REFCOUNT atomic_t
overflow defense from the last public patch of PaX/grsecurity, based
on my understanding of the code. Changes or omissions from the original
code are mine and don't reflect the original grsecurity/PaX code. Thanks
to PaX Team for various suggestions for improvement for repurposing this
code to be a refcount-only protection.
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Hans Liljestrand <ishkamiel@gmail.com>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Cc: Jann Horn <jannh@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Serge E. Hallyn <serge@hallyn.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: arozansk@redhat.com
Cc: axboe@kernel.dk
Cc: kernel-hardening@lists.openwall.com
Cc: linux-arch <linux-arch@vger.kernel.org>
Link: http://lkml.kernel.org/r/20170815161924.GA133115@beast
Signed-off-by: Ingo Molnar <mingo@kernel.org>
UPSTREAM: locking/refcounts: Implement refcount_dec_and_lock_irqsave()
There are in-tree users of refcount_dec_and_lock() which must acquire the
spin lock with interrupts disabled. To workaround the lack of an irqsave
variant of refcount_dec_and_lock() they use local_irq_save() at the call
site. This causes extra code and creates in some places unneeded long
interrupt disabled times. These places need also extra treatment for
PREEMPT_RT due to the disconnect of the irq disabling and the lock
function.
Implement the missing irqsave variant of the function.
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r20180612161621.22645-4-bigeasy@linutronix.de
[bigeasy: s@atomic_dec_and_lock@refcount_dec_and_lock@g]
UPSTREAM: locking/refcounts: Include fewer headers in <linux/refcount.h>
Debloat <linux/refcount.h>'s dependencies:
- <linux/kernel.h> is not needed, but <linux/compiler.h> is.
- <linux/mutex.h> is not needed, only a forward declaration of "struct mutex".
- <linux/spinlock.h> is not needed, <linux/spinlock_types.h> is enough.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Link: https://lkml.kernel.org/lkml/20180331220036.GA7676@avx2
Signed-off-by: Ingo Molnar <mingo@kernel.org>
UPSTREAM: locking/refcount: Always allow checked forms
In many cases, it would be useful to be able to use the full
sanity-checked refcount helpers regardless of CONFIG_REFCOUNT_FULL,
as this would help to avoid duplicate warnings where callers try to
sanity-check refcount manipulation.
This patch refactors things such that the full refcount helpers were
always built, as refcount_${op}_checked(), such that they can be used
regardless of CONFIG_REFCOUNT_FULL. This will allow code which *always*
wants a checked refcount to opt-in, avoiding the need to duplicate the
logic for warnings.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180711093607.1644-1-mark.rutland@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
UPSTREAM: locking/atomic: Introduce atomic_try_cmpxchg()
Add a new cmpxchg interface:
bool try_cmpxchg(u{8,16,32,64} *ptr, u{8,16,32,64} *val, u{8,16,32,64} new);
Where the boolean returns the result of the compare; and thus if the
exchange happened; and in case of failure, the new value of *ptr is
returned in *val.
This allows simplification/improvement of loops like:
for (;;) {
new = val $op $imm;
old = cmpxchg(ptr, val, new);
if (old == val)
break;
val = old;
}
into:
do {
} while (!try_cmpxchg(ptr, &val, val $op $imm));
while also generating better code (GCC6 and onwards).
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
UPSTREAM: locking/atomic: Fix atomic_try_cmpxchg() semantics
Dmitry noted that the new atomic_try_cmpxchg() primitive is broken when
the old pointer doesn't point to the local stack.
He writes:
"Consider a classical lock-free stack push:
node->next = atomic_read(&head);
do {
} while (!atomic_try_cmpxchg(&head, &node->next, node));
This code is broken with the current implementation, the problem is
with unconditional update of *__po.
In case of success it writes the same value back into *__po, but in
case of cmpxchg success we might have lose ownership of some memory
locations and potentially over what __po has pointed to. The same
holds for the re-read of *__po. "
He also points out that this makes it surprisingly different from the
similar C/C++ atomic operation.
After investigating the code-gen differences caused by this patch; and
a number of alternatives (Linus dislikes this interface lots), we
arrived at these results (size x86_64-defconfig/vmlinux):
GCC-6.3.0:
10735757 cmpxchg
10726413 try_cmpxchg
10730509 try_cmpxchg + patch
10730445 try_cmpxchg-linus
GCC-7 (20170327):
10709514 cmpxchg
10704266 try_cmpxchg
10704266 try_cmpxchg + patch
10704394 try_cmpxchg-linus
From this we see that the patch has the advantage of better code-gen
on GCC-7 and keeps the interface roughly consistent with the C
language variant.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Fixes: a9ebf306f52c ("locking/atomic: Introduce atomic_try_cmpxchg()")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
Peter Zijlstraauthored and Sorayukiicommited 2026-05-15 17:54:59 +07:00
* 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
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Merge 4.9.320 into android-4.9-q
Changes in 4.9.320
9p: missing chunk of "fs/9p: Don't update file type when updating file attributes"
random: remove stale maybe_reseed_primary_crng
random: remove stale urandom_init_wait
random: remove variable limit
random: fix comment for unused random_min_urandom_seed
random: convert get_random_int/long into get_random_u32/u64
random: move random_min_urandom_seed into CONFIG_SYSCTL ifdef block
random: invalidate batched entropy after crng init
random: silence compiler warnings and fix race
random: add wait_for_random_bytes() API
random: add get_random_{bytes,u32,u64,int,long,once}_wait family
random: warn when kernel uses unseeded randomness
random: do not ignore early device randomness
random: suppress spammy warnings about unseeded randomness
random: reorder READ_ONCE() in get_random_uXX
random: fix warning message on ia64 and parisc
random: use a different mixing algorithm for add_device_randomness()
random: set up the NUMA crng instances after the CRNG is fully initialized
random: fix possible sleeping allocation from irq context
random: rate limit unseeded randomness warnings
random: add a spinlock_t to struct batched_entropy
char/random: silence a lockdep splat with printk()
Revert "char/random: silence a lockdep splat with printk()"
random: always use batched entropy for get_random_u{32,64}
random: fix data race on crng_node_pool
crypto: chacha20 - Fix keystream alignment for chacha20_block()
random: always fill buffer in get_random_bytes_wait
random: optimize add_interrupt_randomness
drivers/char/random.c: remove unused dont_count_entropy
random: Fix whitespace pre random-bytes work
random: Return nbytes filled from hw RNG
random: add a config option to trust the CPU's hwrng
random: remove preempt disabled region
random: Make crng state queryable
random: make CPU trust a boot parameter
drivers/char/random.c: constify poolinfo_table
drivers/char/random.c: remove unused stuct poolinfo::poolbits
drivers/char/random.c: make primary_crng static
random: only read from /dev/random after its pool has received 128 bits
random: move rand_initialize() earlier
random: document get_random_int() family
latent_entropy: avoid build error when plugin cflags are not set
random: fix soft lockup when trying to read from an uninitialized blocking pool
random: Support freezable kthreads in add_hwgenerator_randomness()
fdt: add support for rng-seed
random: Use wait_event_freezable() in add_hwgenerator_randomness()
char/random: Add a newline at the end of the file
Revert "hwrng: core - Freeze khwrng thread during suspend"
crypto: Deduplicate le32_to_cpu_array() and cpu_to_le32_array()
crypto: blake2s - generic C library implementation and selftest
lib/crypto: blake2s: move hmac construction into wireguard
lib/crypto: sha1: re-roll loops to reduce code size
random: Don't wake crng_init_wait when crng_init == 1
random: Add a urandom_read_nowait() for random APIs that don't warn
random: add GRND_INSECURE to return best-effort non-cryptographic bytes
random: ignore GRND_RANDOM in getentropy(2)
random: make /dev/random be almost like /dev/urandom
random: fix crash on multiple early calls to add_bootloader_randomness()
random: remove the blocking pool
random: delete code to pull data into pools
random: remove kernel.random.read_wakeup_threshold
random: remove unnecessary unlikely()
random: convert to ENTROPY_BITS for better code readability
random: Add and use pr_fmt()
random: fix typo in add_timer_randomness()
random: remove some dead code of poolinfo
random: split primary/secondary crng init paths
random: avoid warnings for !CONFIG_NUMA builds
x86: Remove arch_has_random, arch_has_random_seed
powerpc: Remove arch_has_random, arch_has_random_seed
linux/random.h: Remove arch_has_random, arch_has_random_seed
linux/random.h: Use false with bool
linux/random.h: Mark CONFIG_ARCH_RANDOM functions __must_check
powerpc: Use bool in archrandom.h
random: add arch_get_random_*long_early()
random: avoid arch_get_random_seed_long() when collecting IRQ randomness
random: remove dead code left over from blocking pool
MAINTAINERS: co-maintain random.c
crypto: blake2s - include <linux/bug.h> instead of <asm/bug.h>
crypto: blake2s - adjust include guard naming
random: document add_hwgenerator_randomness() with other input functions
random: remove unused irq_flags argument from add_interrupt_randomness()
random: use BLAKE2s instead of SHA1 in extraction
random: do not sign extend bytes for rotation when mixing
random: do not re-init if crng_reseed completes before primary init
random: mix bootloader randomness into pool
random: harmonize "crng init done" messages
random: use IS_ENABLED(CONFIG_NUMA) instead of ifdefs
random: initialize ChaCha20 constants with correct endianness
random: early initialization of ChaCha constants
random: avoid superfluous call to RDRAND in CRNG extraction
random: don't reset crng_init_cnt on urandom_read()
random: fix typo in comments
random: cleanup poolinfo abstraction
crypto: chacha20 - Fix chacha20_block() keystream alignment (again)
random: cleanup integer types
random: remove incomplete last_data logic
random: remove unused extract_entropy() reserved argument
random: try to actively add entropy rather than passively wait for it
random: rather than entropy_store abstraction, use global
random: remove unused OUTPUT_POOL constants
random: de-duplicate INPUT_POOL constants
random: prepend remaining pool constants with POOL_
random: cleanup fractional entropy shift constants
random: access input_pool_data directly rather than through pointer
random: simplify arithmetic function flow in account()
random: continually use hwgenerator randomness
random: access primary_pool directly rather than through pointer
random: only call crng_finalize_init() for primary_crng
random: use computational hash for entropy extraction
random: simplify entropy debiting
random: use linear min-entropy accumulation crediting
random: always wake up entropy writers after extraction
random: make credit_entropy_bits() always safe
random: remove use_input_pool parameter from crng_reseed()
random: remove batched entropy locking
random: fix locking in crng_fast_load()
random: use RDSEED instead of RDRAND in entropy extraction
random: inline leaves of rand_initialize()
random: ensure early RDSEED goes through mixer on init
random: do not xor RDRAND when writing into /dev/random
random: absorb fast pool into input pool after fast load
random: use hash function for crng_slow_load()
random: remove outdated INT_MAX >> 6 check in urandom_read()
random: zero buffer after reading entropy from userspace
random: tie batched entropy generation to base_crng generation
random: remove ifdef'd out interrupt bench
random: remove unused tracepoints
random: add proper SPDX header
random: deobfuscate irq u32/u64 contributions
random: introduce drain_entropy() helper to declutter crng_reseed()
random: remove useless header comment
random: remove whitespace and reorder includes
random: group initialization wait functions
random: group entropy extraction functions
random: group entropy collection functions
random: group userspace read/write functions
random: group sysctl functions
random: rewrite header introductory comment
workqueue: make workqueue available early during boot
random: defer fast pool mixing to worker
random: do not take pool spinlock at boot
random: unify early init crng load accounting
random: check for crng_init == 0 in add_device_randomness()
hwrng: core - do not use multiple blank lines
hwrng: core - rewrite better comparison to NULL
hwrng: core - Rewrite the header
hwrng: core - Move hwrng miscdev minor number to include/linux/miscdevice.h
hwrng: core - remove unused PFX macro
hwrng: use rng source with best quality
hwrng: remember rng chosen by user
random: pull add_hwgenerator_randomness() declaration into random.h
random: clear fast pool, crng, and batches in cpuhp bring up
random: round-robin registers as ulong, not u32
random: only wake up writers after zap if threshold was passed
random: cleanup UUID handling
random: unify cycles_t and jiffies usage and types
random: do crng pre-init loading in worker rather than irq
random: give sysctl_random_min_urandom_seed a more sensible value
random: don't let 644 read-only sysctls be written to
random: replace custom notifier chain with standard one
random: use SipHash as interrupt entropy accumulator
random: make consistent usage of crng_ready()
random: reseed more often immediately after booting
random: check for signal and try earlier when generating entropy
random: skip fast_init if hwrng provides large chunk of entropy
random: treat bootloader trust toggle the same way as cpu trust toggle
random: re-add removed comment about get_random_{u32,u64} reseeding
random: mix build-time latent entropy into pool at init
random: do not split fast init input in add_hwgenerator_randomness()
random: do not allow user to keep crng key around on stack
random: check for signal_pending() outside of need_resched() check
random: check for signals every PAGE_SIZE chunk of /dev/[u]random
random: make random_get_entropy() return an unsigned long
random: document crng_fast_key_erasure() destination possibility
random: fix sysctl documentation nits
init: call time_init() before rand_initialize()
ia64: define get_cycles macro for arch-override
s390: define get_cycles macro for arch-override
parisc: define get_cycles macro for arch-override
alpha: define get_cycles macro for arch-override
powerpc: define get_cycles macro for arch-override
timekeeping: Add raw clock fallback for random_get_entropy()
m68k: use fallback for random_get_entropy() instead of zero
mips: use fallback for random_get_entropy() instead of just c0 random
arm: use fallback for random_get_entropy() instead of zero
nios2: use fallback for random_get_entropy() instead of zero
x86/tsc: Use fallback for random_get_entropy() instead of zero
um: use fallback for random_get_entropy() instead of zero
sparc: use fallback for random_get_entropy() instead of zero
xtensa: use fallback for random_get_entropy() instead of zero
uapi: rename ext2_swab() to swab() and share globally in swab.h
random: insist on random_get_entropy() existing in order to simplify
random: do not use batches when !crng_ready()
random: do not pretend to handle premature next security model
random: order timer entropy functions below interrupt functions
random: do not use input pool from hard IRQs
random: help compiler out with fast_mix() by using simpler arguments
siphash: use one source of truth for siphash permutations
random: use symbolic constants for crng_init states
random: avoid initializing twice in credit race
random: remove ratelimiting for in-kernel unseeded randomness
random: use proper jiffies comparison macro
random: handle latent entropy and command line from random_init()
random: credit architectural init the exact amount
random: use static branch for crng_ready()
random: remove extern from functions in header
random: use proper return types on get_random_{int,long}_wait()
random: move initialization functions out of hot pages
random: move randomize_page() into mm where it belongs
random: convert to using fops->write_iter()
random: wire up fops->splice_{read,write}_iter()
random: check for signals after page of pool writes
Revert "random: use static branch for crng_ready()"
crypto: drbg - add FIPS 140-2 CTRNG for noise source
crypto: drbg - always seeded with SP800-90B compliant noise source
crypto: drbg - prepare for more fine-grained tracking of seeding state
crypto: drbg - track whether DRBG was seeded with !rng_is_initialized()
crypto: drbg - move dynamic ->reseed_threshold adjustments to __drbg_seed()
crypto: drbg - always try to free Jitter RNG instance
crypto: drbg - make reseeding from get_random_bytes() synchronous
random: avoid checking crng_ready() twice in random_init()
random: mark bootloader randomness code as __init
random: account for arch randomness in bits
ASoC: cs42l52: Fix TLV scales for mixer controls
ASoC: cs53l30: Correct number of volume levels on SX controls
ASoC: cs42l52: Correct TLV for Bypass Volume
ASoC: cs42l56: Correct typo in minimum level for SX volume controls
ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo()
ASoC: wm8962: Fix suspend while playing music
scsi: vmw_pvscsi: Expand vcpuHint to 16 bits
scsi: lpfc: Fix port stuck in bypassed state after LIP in PT2PT topology
virtio-mmio: fix missing put_device() when vm_cmdline_parent registration failed
nfc: nfcmrvl: Fix memory leak in nfcmrvl_play_deferred
ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg
net: ethernet: mtk_eth_soc: fix misuse of mem alloc interface netdev[napi]_alloc_frag
random: credit cpu and bootloader seeds by default
pNFS: Don't keep retrying if the server replied NFS4ERR_LAYOUTUNAVAILABLE
misc: atmel-ssc: Fix IRQ check in ssc_probe
irqchip/gic/realview: Fix refcount leak in realview_gic_of_init
irqchip/gic-v3: Iterate over possible CPUs by for_each_possible_cpu()
comedi: vmk80xx: fix expression for tx buffer size
USB: serial: option: add support for Cinterion MV31 with new baseline
USB: serial: io_ti: add Agilent E5805A support
usb: gadget: lpc32xx_udc: Fix refcount leak in lpc32xx_udc_probe
serial: 8250: Store to lsr_save_flags after lsr read
ext4: fix bug_on ext4_mb_use_inode_pa
ext4: make variable "count" signed
ext4: add reserved GDT blocks check
l2tp: don't use inet_shutdown on ppp session destroy
l2tp: fix race in pppol2tp_release with session object destroy
s390/mm: use non-quiescing sske for KVM switch to keyed guest
xprtrdma: fix incorrect header size calculations
swiotlb: fix info leak with DMA_FROM_DEVICE
Reinstate some of "swiotlb: rework "fix info leak with DMA_FROM_DEVICE""
fuse: fix pipe buffer lifetime for direct_io
tcp: change source port randomizarion at connect() time
tcp: add some entropy in __inet_hash_connect()
secure_seq: use the 64 bits of the siphash for port offset calculation
tcp: use different parts of the port_offset for index and offset
tcp: add small random increments to the source port
tcp: dynamically allocate the perturb table used by source ports
tcp: increase source port perturb table to 2^16
tcp: drop the hash_32() part from the index calculation
Linux 4.9.320
Conflicts:
crypto/chacha20_generic.c
drivers/char/random.c
drivers/of/fdt.c
include/crypto/chacha20.h
lib/chacha20.c
Merge resolution notes:
- Added CHACHA20_KEY_SIZE and CHACHA20_BLOCK_SIZE constants to
chacha.h, to minimize changes from the 4.9.320 version of random.c
- Updated lib/vsprintf.c for
"random: replace custom notifier chain with standard one".
Change-Id: Ia7a12d8883b808f88bbe807d6150552bb084f6b3
Signed-off-by: Eric Biggers <ebiggers@google.com>
commit 66d7fb94e4ffe5acc589e0b2b4710aecc1f07a28 upstream.
The C implementation was originally based on Samuel Neves' public
domain reference implementation but has since been heavily modified
for the kernel. We're able to do compile-time optimizations by moving
some scaffolding around the final function into the header file.
Information: https://blake2.net/
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
Co-developed-by: Samuel Neves <sneves@dei.uc.pt>
[ardb: - move from lib/zinc to lib/crypto
- remove simd handling
- rewrote selftest for better coverage
- use fixed digest length for blake2s_hmac() and rename to
blake2s256_hmac() ]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
[Jason: for stable, skip kconfig and wire up directly, and skip the arch
hooks; optimized implementations need not be backported.]
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jason A. Donenfeldauthored and Greg Kroah-Hartmancommited 2022-06-25 11:45:01 +02:00
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Merge 4.9.225 into android-4.9-q
Changes in 4.9.225
igb: use igb_adapter->io_addr instead of e1000_hw->hw_addr
padata: Remove unused but set variables
padata: get_next is never NULL
padata: ensure the reorder timer callback runs on the correct CPU
padata: ensure padata_do_serial() runs on the correct CPU
evm: Check also if *tfm is an error pointer in init_desc()
ima: Fix return value of ima_write_policy()
fix multiplication overflow in copy_fdtable()
iommu/amd: Fix over-read of ACPI UID from IVRS table
i2c: mux: demux-pinctrl: Fix an error handling path in 'i2c_demux_pinctrl_probe()'
gcc-common.h: Update for GCC 10
HID: multitouch: add eGalaxTouch P80H84 support
configfs: fix config_item refcnt leak in configfs_rmdir()
component: Silence bind error on -EPROBE_DEFER
gtp: set NLM_F_MULTI flag in gtp_genl_dump_pdp()
ceph: fix double unlock in handle_cap_export()
USB: core: Fix misleading driver bug report
platform/x86: asus-nb-wmi: Do not load on Asus T100TA and T200TA
ARM: futex: Address build warning
i2c: dev: Fix the race between the release of i2c_dev and cdev
padata: set cpu_index of unused CPUs to -1
padata: Replace delayed timer with immediate workqueue in padata_reorder
padata: initialize pd->cpu with effective cpumask
padata: purge get_cpu and reorder_via_wq from padata_do_serial
arm64: fix the flush_icache_range arguments in machine_kexec
watchdog: Fix the race between the release of watchdog_core_data and cdev
net: l2tp: export debug flags to UAPI
net: l2tp: deprecate PPPOL2TP_MSG_* in favour of L2TP_MSG_*
net: l2tp: ppp: change PPPOL2TP_MSG_* => L2TP_MSG_*
New kernel function to get IP overhead on a socket.
L2TP:Adjust intf MTU, add underlay L3, L2 hdrs.
l2tp: remove useless duplicate session detection in l2tp_netlink
l2tp: remove l2tp_session_find()
l2tp: define parameters of l2tp_session_get*() as "const"
l2tp: define parameters of l2tp_tunnel_find*() as "const"
l2tp: initialise session's refcount before making it reachable
l2tp: hold tunnel while looking up sessions in l2tp_netlink
l2tp: hold tunnel while processing genl delete command
l2tp: hold tunnel while handling genl tunnel updates
l2tp: hold tunnel while handling genl TUNNEL_GET commands
l2tp: hold tunnel used while creating sessions with netlink
l2tp: prevent creation of sessions on terminated tunnels
l2tp: pass tunnel pointer to ->session_create()
l2tp: fix l2tp_eth module loading
l2tp: don't register sessions in l2tp_session_create()
l2tp: initialise l2tp_eth sessions before registering them
l2tp: protect sock pointer of struct pppol2tp_session with RCU
l2tp: initialise PPP sessions before registering them
ALSA: pcm: fix incorrect hw_base increase
dmaengine: tegra210-adma: Fix an error handling path in 'tegra_adma_probe()'
l2tp: device MTU setup, tunnel socket needs a lock
x86/uaccess, ubsan: Fix UBSAN vs. SMAP
ubsan: build ubsan.c more conservatively
platform/x86: alienware-wmi: fix kfree on potentially uninitialized pointer
libnvdimm/btt: Remove unnecessary code in btt_freelist_init
cxgb4: free mac_hlist properly
cxgb4/cxgb4vf: Fix mac_hlist initialization and free
Revert "gfs2: Don't demote a glock until its revokes are written"
staging: iio: ad2s1210: Fix SPI reading
staging: greybus: Fix uninitialized scalar variable
iio: dac: vf610: Fix an error handling path in 'vf610_dac_probe()'
mei: release me_cl object reference
rapidio: fix an error in get_user_pages_fast() error handling
iio: sca3000: Remove an erroneous 'get_device()'
Linux 4.9.225
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I5183590d1e0ef7ea6623cf70c753ea169d0fd8a1
commit af700eaed0564d5d3963a7a51cb0843629d7fe3d upstream.
objtool points out several conditions that it does not like, depending
on the combination with other configuration options and compiler
variants:
stack protector:
lib/ubsan.o: warning: objtool: __ubsan_handle_type_mismatch()+0xbf: call to __stack_chk_fail() with UACCESS enabled
lib/ubsan.o: warning: objtool: __ubsan_handle_type_mismatch_v1()+0xbe: call to __stack_chk_fail() with UACCESS enabled
stackleak plugin:
lib/ubsan.o: warning: objtool: __ubsan_handle_type_mismatch()+0x4a: call to stackleak_track_stack() with UACCESS enabled
lib/ubsan.o: warning: objtool: __ubsan_handle_type_mismatch_v1()+0x4a: call to stackleak_track_stack() with UACCESS enabled
kasan:
lib/ubsan.o: warning: objtool: __ubsan_handle_type_mismatch()+0x25: call to memcpy() with UACCESS enabled
lib/ubsan.o: warning: objtool: __ubsan_handle_type_mismatch_v1()+0x25: call to memcpy() with UACCESS enabled
The stackleak and kasan options just need to be disabled for this file
as we do for other files already. For the stack protector, we already
attempt to disable it, but this fails on clang because the check is
mixed with the gcc specific -fno-conserve-stack option. According to
Andrey Ryabinin, that option is not even needed, dropping it here fixes
the stackprotector issue.
Link: http://lkml.kernel.org/r/20190722125139.1335385-1-arnd@arndb.de
Link: https://lore.kernel.org/lkml/20190617123109.667090-1-arnd@arndb.de/t/
Link: https://lore.kernel.org/lkml/20190722091050.2188664-1-arnd@arndb.de/t/
Fixes: d08965a27e84 ("x86/uaccess, ubsan: Fix UBSAN vs. SMAP")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Arnd Bergmannauthored and Greg Kroah-Hartmancommited 2020-05-27 16:42:00 +02:00
commit d08965a27e84ca090b504844d50c24fc98587b11 upstream.
UBSAN can insert extra code in random locations; including AC=1
sections. Typically this code is not safe and needs wrapping.
So far, only __ubsan_handle_type_mismatch* have been observed in AC=1
sections and therefore only those are annotated.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
[stable backport: only take the lib/Makefile change to resolve gcc-10
build issues]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Zijlstraauthored and Greg Kroah-Hartmancommited 2020-05-27 16:42:00 +02:00
commit 2c956a60778cbb6a27e0c7a8a52a91378c90e1d1 upstream.
SipHash is a 64-bit keyed hash function that is actually a
cryptographically secure PRF, like HMAC. Except SipHash is super fast,
and is meant to be used as a hashtable keyed lookup function, or as a
general PRF for short input use cases, such as sequence numbers or RNG
chaining.
For the first usage:
There are a variety of attacks known as "hashtable poisoning" in which an
attacker forms some data such that the hash of that data will be the
same, and then preceeds to fill up all entries of a hashbucket. This is
a realistic and well-known denial-of-service vector. Currently
hashtables use jhash, which is fast but not secure, and some kind of
rotating key scheme (or none at all, which isn't good). SipHash is meant
as a replacement for jhash in these cases.
There are a modicum of places in the kernel that are vulnerable to
hashtable poisoning attacks, either via userspace vectors or network
vectors, and there's not a reliable mechanism inside the kernel at the
moment to fix it. The first step toward fixing these issues is actually
getting a secure primitive into the kernel for developers to use. Then
we can, bit by bit, port things over to it as deemed appropriate.
While SipHash is extremely fast for a cryptographically secure function,
it is likely a bit slower than the insecure jhash, and so replacements
will be evaluated on a case-by-case basis based on whether or not the
difference in speed is negligible and whether or not the current jhash usage
poses a real security risk.
For the second usage:
A few places in the kernel are using MD5 or SHA1 for creating secure
sequence numbers, syn cookies, port numbers, or fast random numbers.
SipHash is a faster and more fitting, and more secure replacement for MD5
in those situations. Replacing MD5 and SHA1 with SipHash for these uses is
obvious and straight-forward, and so is submitted along with this patch
series. There shouldn't be much of a debate over its efficacy.
Dozens of languages are already using this internally for their hash
tables and PRFs. Some of the BSDs already use this in their kernels.
SipHash is a widely known high-speed solution to a widely known set of
problems, and it's time we catch-up.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Jean-Philippe Aumasson <jeanphilippe.aumasson@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: David Laight <David.Laight@aculab.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 4.9 as dependency of commits df453700e8d8 "inet: switch
IP ID generator to siphash" and 3c79107631db "netfilter: ctnetlink: don't
use conntrack/expect object addresses as id"]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jason A. Donenfeldauthored and Greg Kroah-Hartmancommited 2019-08-25 10:51:42 +02:00
* refs/heads/tmp-d47e38b:
Linux 4.9.174
media: v4l2: i2c: ov7670: Fix PLL bypass register values
x86/mce: Improve error message when kernel cannot recover, p2
selinux: never allow relabeling on context mounts
Input: snvs_pwrkey - initialize necessary driver data before enabling IRQ
scsi: RDMA/srpt: Fix a credit leak for aborted commands
staging: iio: adt7316: fix the dac write calculation
staging: iio: adt7316: fix the dac read calculation
staging: iio: adt7316: allow adt751x to use internal vref for all dacs
perf/x86/amd: Update generic hardware cache events for Family 17h
ARM: iop: don't use using 64-bit DMA masks
ARM: orion: don't use using 64-bit DMA masks
xsysace: Fix error handling in ace_setup
sh: fix multiple function definition build errors
hugetlbfs: fix memory leak for resv_map
net: hns: Fix WARNING when remove HNS driver with SMMU enabled
net: hns: Use NAPI_POLL_WEIGHT for hns driver
net: hns: fix KASAN: use-after-free in hns_nic_net_xmit_hw()
scsi: storvsc: Fix calculation of sub-channel count
scsi: core: add new RDAC LENOVO/DE_Series device
vfio/pci: use correct format characters
rtc: da9063: set uie_unsupported when relevant
debugfs: fix use-after-free on symlink traversal
jffs2: fix use-after-free on symlink traversal
net: stmmac: don't log oversized frames
net: stmmac: fix dropping of multi-descriptor RX frames
net: stmmac: don't overwrite discard_frame status
bonding: show full hw address in sysfs for slave entries
net/mlx5: E-Switch, Fix esw manager vport indication for more vport commands
igb: Fix WARN_ONCE on runtime suspend
batman-adv: Reduce tt_global hash refcnt only for removed entry
batman-adv: Reduce tt_local hash refcnt only for removed entry
batman-adv: Reduce claim hash refcnt only for removed entry
rtc: sh: Fix invalid alarm warning for non-enabled alarm
HID: debug: fix race condition with between rdesc_show() and device removal
HID: logitech: check the return value of create_singlethread_workqueue
nvme-loop: init nvmet_ctrl fatal_err_work when allocate
USB: core: Fix bug caused by duplicate interface PM usage counter
USB: core: Fix unterminated string returned by usb_string()
usb: usbip: fix isoc packet num validation in get_pipe
USB: w1 ds2490: Fix bug caused by improper use of altsetting array
USB: yurex: Fix protection fault after device removal
caif: reduce stack size with KASAN
arm64: mm: don't print out page table entries on EL0 faults
arm64: mm: print out correct page table entries
kasan: prevent compiler from optimizing away memset in tests
arm64: proc: Set PTE_NG for table entries to avoid traversing them twice
kasan: remove redundant initialization of variable 'real_size'
kasan: avoid -Wmaybe-uninitialized warning
kasan: add a prototype of task_struct to avoid warning
arm64: kasan: avoid bad virt_to_pfn()
x86/unwind: Disable KASAN checks for non-current tasks
mm/kasan: Switch to using __pa_symbol and lm_alias
x86/suspend: fix false positive KASAN warning on suspend/resume
net: phy: marvell: Fix buffer overrun with stats counters
bnxt_en: Improve multicast address setup logic.
packet: validate msg_namelen in send directly
ipv6: invert flowlabel sharing check in process and user mode
ipv6/flowlabel: wait rcu grace period before put_pid()
ipv4: ip_do_fragment: Preserve skb_iif during fragmentation
ALSA: line6: use dynamic buffers
ANDROID: cuttlefish 4.9: enable CONFIG_CRYPTO_AES_NI_INTEL=y
Change-Id: Ic2b4a8e559d993acfce1b5e963949dc297614f3a
Signed-off-by: Tengfei Fan <tengfeif@codeaurora.org>
* refs/heads/tmp-0166b9e:
Revert "ANDROID: input: keychord: Add keychord driver"
Revert "ANDROID: input: misc: keychord: move header to uapi"
Revert "ANDROID: input: misc: keychord: log when keychord triggered"
Revert "ANDROID: keychord: Fix a slab out-of-bounds read."
Revert "Use %zu to print resid (size_t)."
Revert "ANDROID: keychord: Fix races in keychord_write."
Revert "ANDROID: keychord: Fix for a memory leak in keychord."
Revert "ANDROID: keychord: Check for write data size"
ANDROID: drop CONFIG_INPUT_KEYCHORD from cuttlefish and ranchu
BACKPORT: mm/debug.c: provide useful debugging information for VM_BUG
UPSTREAM: bug: use %pB in BUG and stack protector failure
UPSTREAM: x86/alternative: Print unadorned pointers
UPSTREAM: trace_uprobe: Display correct offset in uprobe_events
UPSTREAM: usercopy: Remove pointer from overflow report
UPSTREAM: Do not hash userspace addresses in fault handlers
UPSTREAM: mm/slab.c: do not hash pointers when debugging slab
UPSTREAM: kasan: use %px to print addresses instead of %p
BACKPORT: vsprintf: add printk specifier %px
BACKPORT: printk: hash addresses printed with %p
ANDROID: Fix race in crng_reseed()
UPSTREAM: siphash: implement HalfSipHash1-3 for hash tables
UPSTREAM: siphash: add cryptographically secure PRF
BACKPORT: vsprintf: refactor %pK code out of pointer()
BACKPORT: docs: correct documentation for %pK
BACKPORT: filemap: add a comment about FAULT_FLAG_RETRY_NOWAIT behavior
BACKPORT: filemap: drop the mmap_sem for all blocking operations
BACKPORT: filemap: kill page_cache_read usage in filemap_fault
ANDROID: binder: remove extra declaration left after backport
UPSTREAM: net: socket: set sock->sk to NULL after calling proto_ops::release()
FROMGIT: binder: fix BUG_ON found by selinux-testsuite
Linux 4.9.166
ath10k: avoid possible string overflow
power: supply: charger-manager: Fix incorrect return value
pwm-backlight: Enable/disable the PWM before/after LCD enable toggle.
rtc: Fix overflow when converting time64_t to rtc_time
scsi: ufs: fix wrong command type of UTRD for UFSHCI v2.1
USB: core: only clean up what we allocated
lib/int_sqrt: optimize small argument
serial: sprd: clear timeout interrupt only rather than all interrupts
arm64: traps: disable irq in die()
Hang/soft lockup in d_invalidate with simultaneous calls
serial: sprd: adjust TIMEOUT to a big value
tcp/dccp: drop SYN packets if accept queue is full
ALSA: hda - Enforces runtime_resume after S3 and S4 for each codec
ALSA: hda - Record the current power state before suspend/resume calls
locking/lockdep: Add debug_locks check in __lock_downgrade()
Bluetooth: Fix decrementing reference count twice in releasing socket
media: v4l2-ctrls.c/uvc: zero v4l2_event
ext4: brelse all indirect buffer in ext4_ind_remove_space()
ext4: fix data corruption caused by unaligned direct AIO
ext4: fix NULL pointer dereference while journal is aborted
objtool: Move objtool_file struct off the stack
futex: Ensure that futex address is aligned in handle_futex_death()
MIPS: Fix kernel crash for R6 in jump label branch function
MIPS: Ensure ELF appended dtb is relocated
mips: loongson64: lemote-2f: Add IRQF_NO_SUSPEND to "cascade" irqaction.
udf: Fix crash on IO error during truncate
libceph: wait for latest osdmap in ceph_monc_blacklist_add()
iommu/amd: fix sg->dma_address for sg->offset bigger than PAGE_SIZE
drm/vmwgfx: Don't double-free the mode stored in par->set_mode
mmc: pxamci: fix enum type confusion
ANDROID: dm-bow: Fix 32 bit compile errors
ANDROID: fix 4.9 backport of psi header refactoring
UPSTREAM: mm: proc: smaps_rollup: fix pss_locked calculation
UPSTREAM: binder: fix handling of misaligned binder object
UPSTREAM: binder: fix sparse issue in binder_alloc_selftest.c
BACKPORT: binder: use userspace pointer as base of buffer space
UPSTREAM: binder: fix kerneldoc header for struct binder_buffer
BACKPORT: binder: remove user_buffer_offset
UPSTREAM: binder: remove kernel vm_area for buffer space
UPSTREAM: binder: avoid kernel vm_area for buffer fixups
BACKPORT: binder: add function to copy binder object from buffer
BACKPORT: binder: add functions to copy to/from binder buffers
UPSTREAM: binder: create userspace-to-binder-buffer copy function
ANDROID: Add dm-bow to cuttlefish configuration
ANDROID: dm-bow: Backport to 4.9
ANDROID: dm-bow: backport to 4.14
ANDROID: dm-bow: Add dm-bow feature
f2fs: set pin_file under CAP_SYS_ADMIN
f2fs: fix to avoid deadlock in f2fs_read_inline_dir()
f2fs: fix to adapt small inline xattr space in __find_inline_xattr()
f2fs: fix to do sanity check with inode.i_inline_xattr_size
f2fs: give some messages for inline_xattr_size
f2fs: don't trigger read IO for beyond EOF page
f2fs: fix to add refcount once page is tagged PG_private
f2fs: remove wrong comment in f2fs_invalidate_page()
f2fs: fix to use kvfree instead of kzfree
f2fs: print more parameters in trace_f2fs_map_blocks
f2fs: trace f2fs_ioc_shutdown
f2fs: fix to avoid deadlock of atomic file operations
f2fs: fix to dirty inode for i_mode recovery
f2fs: give random value to i_generation
f2fs: no need to take page lock in readdir
f2fs: fix to update iostat correctly in IPU path
f2fs: fix encrypted page memory leak
f2fs: make fault injection covering __submit_flush_wait()
f2fs: fix to retry fill_super only if recovery failed
f2fs: silence VM_WARN_ON_ONCE in mempool_alloc
f2fs: correct spelling mistake
f2fs: fix wrong #endif
f2fs: don't clear CP_QUOTA_NEED_FSCK_FLAG
f2fs: don't allow negative ->write_io_size_bits
f2fs: fix to check inline_xattr_size boundary correctly
Revert "f2fs: fix to avoid deadlock of atomic file operations"
Revert "f2fs: fix to check inline_xattr_size boundary correctly"
f2fs: do not use mutex lock in atomic context
f2fs: fix potential data inconsistence of checkpoint
f2fs: fix to avoid deadlock of atomic file operations
f2fs: fix to check inline_xattr_size boundary correctly
f2fs: jump to label 'free_node_inode' when failing from d_make_root()
f2fs: fix to document inline_xattr_size option
f2fs: fix to data block override node segment by mistake
f2fs: fix typos in code comments
f2fs: use xattr_prefix to wrap up
f2fs: sync filesystem after roll-forward recovery
fs: export evict_inodes
f2fs: flush quota blocks after turnning it off
f2fs: avoid null pointer exception in dcc_info
f2fs: don't wake up too frequently, if there is lots of IOs
f2fs: try to keep CP_TRIMMED_FLAG after successful umount
f2fs: add quick mode of checkpoint=disable for QA
f2fs: run discard jobs when put_super
f2fs: fix to set sbi dirty correctly
f2fs: UBSAN: set boolean value iostat_enable correctly
f2fs: add brackets for macros
f2fs: check if file namelen exceeds max value
f2fs: fix to trigger fsck if dirent.name_len is zero
f2fs: no need to check return value of debugfs_create functions
f2fs: export FS_NOCOW_FL flag to user
f2fs: check inject_rate validity during configuring
f2fs: remove set but not used variable 'err'
f2fs: fix compile warnings: 'struct *' declared inside parameter list
f2fs: change error code to -ENOMEM from -EINVAL
Conflicts:
arch/arm64/kernel/traps.c
drivers/input/misc/Kconfig
drivers/scsi/ufs/ufshcd.c
kernel/sched/core.c
Change-Id: I39b9d8198c85c7651ab76609f545104c71dc38df
Signed-off-by: jianzhou <jianzhou@codeaurora.org>
commit 69ca372c100fba99c78ef826a1795aa86e4f01a8 upstream.
A compiler can optimize away memset calls by replacing them with mov
instructions. There are KASAN tests that specifically test that KASAN
correctly handles memset calls so we don't want this optimization to
happen.
The solution is to add -fno-builtin flag to test_kasan.ko
Link: http://lkml.kernel.org/r/105ec9a308b2abedb1a0d1fdced0c22d765e4732.1519924383.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Nick Terrell <terrelln@fb.com>
Cc: Chris Mason <clm@fb.com>
Cc: Yury Norov <ynorov@caviumnetworks.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "Luis R . Rodriguez" <mcgrof@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Jeff Layton <jlayton@redhat.com>
Cc: "Jason A . Donenfeld" <Jason@zx2c4.com>
Cc: Kostya Serebryany <kcc@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andrey Konovalovauthored and Greg Kroah-Hartmancommited 2019-05-08 07:19:07 +02:00
SipHash is a 64-bit keyed hash function that is actually a
cryptographically secure PRF, like HMAC. Except SipHash is super fast,
and is meant to be used as a hashtable keyed lookup function, or as a
general PRF for short input use cases, such as sequence numbers or RNG
chaining.
For the first usage:
There are a variety of attacks known as "hashtable poisoning" in which an
attacker forms some data such that the hash of that data will be the
same, and then preceeds to fill up all entries of a hashbucket. This is
a realistic and well-known denial-of-service vector. Currently
hashtables use jhash, which is fast but not secure, and some kind of
rotating key scheme (or none at all, which isn't good). SipHash is meant
as a replacement for jhash in these cases.
There are a modicum of places in the kernel that are vulnerable to
hashtable poisoning attacks, either via userspace vectors or network
vectors, and there's not a reliable mechanism inside the kernel at the
moment to fix it. The first step toward fixing these issues is actually
getting a secure primitive into the kernel for developers to use. Then
we can, bit by bit, port things over to it as deemed appropriate.
While SipHash is extremely fast for a cryptographically secure function,
it is likely a bit slower than the insecure jhash, and so replacements
will be evaluated on a case-by-case basis based on whether or not the
difference in speed is negligible and whether or not the current jhash usage
poses a real security risk.
For the second usage:
A few places in the kernel are using MD5 or SHA1 for creating secure
sequence numbers, syn cookies, port numbers, or fast random numbers.
SipHash is a faster and more fitting, and more secure replacement for MD5
in those situations. Replacing MD5 and SHA1 with SipHash for these uses is
obvious and straight-forward, and so is submitted along with this patch
series. There shouldn't be much of a debate over its efficacy.
Dozens of languages are already using this internally for their hash
tables and PRFs. Some of the BSDs already use this in their kernels.
SipHash is a widely known high-speed solution to a widely known set of
problems, and it's time we catch-up.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Jean-Philippe Aumasson <jeanphilippe.aumasson@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: David Laight <David.Laight@aculab.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 2c956a60778cbb6a27e0c7a8a52a91378c90e1d1)
Signed-off-by: Sandeep Patil <sspatil@android.com>
Bug: 78533979
Test: Build and boot cuttlefish
Change-Id: I4f796f1f4db687c51e97c4dc0a555bdc44f22a50
Jason A. Donenfeldauthored and Alistair Strachancommited 2019-03-28 21:13:03 -07:00
* refs/heads/tmp-ed0b11d:
Linux 4.9.149
spi: bcm2835: Unbreak the build of esoteric configs
tpm: tpm_i2c_nuvoton: use correct command duration for TPM 2.x
rtc: m41t80: Correct alarm month range with RTC reads
arm64: KVM: Avoid setting the upper 32 bits of VTCR_EL2 to 1
x86/kvm/vmx: do not use vm-exit instruction length for fast MMIO when running nested
CIFS: Fix error mapping for SMB2_LOCK command which caused OFD lock problem
MIPS: OCTEON: mark RGMII interface disabled on OCTEON III
MIPS: Align kernel load address to 64KB
MIPS: Ensure pmd_present() returns false after pmd_mknotpresent()
media: v4l2-tpg: array index could become negative
media: vivid: free bitmap_cap when updating std/timings/etc.
serial: uartps: Fix interrupt mask issue to handle the RX interrupts properly
f2fs: fix validation of the block count in sanity_check_raw_super
cdc-acm: fix abnormal DATA RX issue for Mediatek Preloader.
clk: rockchip: fix typo in rk3188 spdif_frac parent
spi: bcm2835: Avoid finishing transfer prematurely in IRQ mode
spi: bcm2835: Fix book-keeping of DMA termination
spi: bcm2835: Fix race on DMA termination
ext4: force inode writes when nfsd calls commit_metadata()
ext4: include terminating u32 in size of xattr entries when expanding inodes
ext4: fix EXT4_IOC_GROUP_ADD ioctl
ext4: missing unlock/put_page() in ext4_try_to_write_inline_data()
ext4: fix possible use after free in ext4_quota_enable
perf pmu: Suppress potential format-truncation warning
platform-msi: Free descriptors in platform_msi_domain_free()
KVM: x86: Use jmp to invoke kvm_spurious_fault() from .fixup
Input: elan_i2c - add ACPI ID for touchpad in ASUS Aspire F5-573G
qmi_wwan: apply SET_DTR quirk to the SIMCOM shared device ID
staging: wilc1000: fix missing read_write setting when reading data
usb: r8a66597: Fix a possible concurrency use-after-free bug in r8a66597_endpoint_disable()
USB: serial: option: add Fibocom NL678 series
USB: serial: pl2303: add ids for Hewlett-Packard HP POS pole displays
ALSA: hda/tegra: clear pending irq handlers
ALSA: hda: add mute LED support for HP EliteBook 840 G4
mtd: atmel-quadspi: disallow building on ebsa110
ALSA: emux: Fix potential Spectre v1 vulnerabilities
ALSA: pcm: Fix potential Spectre v1 vulnerability
ALSA: emu10k1: Fix potential Spectre v1 vulnerabilities
ALSA: rme9652: Fix potential Spectre v1 vulnerability
ptr_ring: wrap back ->producer in __ptr_ring_swap_queue()
sock: Make sock->sk_stamp thread-safe
net/mlx5: Typo fix in del_sw_hw_rule
net/mlx5e: Remove the false indication of software timestamping support
gro_cell: add napi_disable in gro_cells_destroy
tipc: compare remote and local protocols in tipc_udp_enable()
tipc: use lock_sock() in tipc_sk_reinit()
xen/netfront: tolerate frags with no data
VSOCK: Send reset control packet when socket is partially bound
vhost: make sure used idx is seen before log in vhost_add_used_n()
tipc: fix a double kfree_skb()
sctp: initialize sin6_flowinfo for ipv6 addrs in sctp_inet6addr_event
packet: validate address length if non-zero
packet: validate address length
net/wan: fix a double free in x25_asy_open_tty()
netrom: fix locking in nr_find_socket()
net: phy: Fix the issue that netif always links up after resuming
net: ipv4: do not handle duplicate fragments as overlapping
isdn: fix kernel-infoleak in capi_unlocked_ioctl
ipv6: tunnels: fix two use-after-free
ipv6: explicitly initialize udp6_addr in udp_sock_create6()
ieee802154: lowpan_header_create check must check daddr
ibmveth: fix DMA unmap error in ibmveth_xmit_start error path
ax25: fix a use-after-free in ax25_fillin_cb()
ipv4: Fix potential Spectre v1 vulnerability
ip6mr: Fix potential Spectre v1 vulnerability
NFC: nxp-nci: Include unaligned.h instead of access_ok.h
UPSTREAM: mm: /proc/pid/smaps_rollup: fix NULL pointer deref in smaps_pte_range()
BACKPORT: fs/proc/task_mmu.c: fix Locked field in /proc/pid/smaps*
BACKPORT: mm: add /proc/pid/smaps_rollup
ANDROID: cuttlefish_defconfig: Enable VIRTIO_INPUT
Linux 4.9.148
drm/ioctl: Fix Spectre v1 vulnerabilities
proc/sysctl: don't return ENOMEM on lookup when a table is unregistering
panic: avoid deadlocks in re-entrant console drivers
ubifs: Handle re-linking of inodes correctly while recovery
x86/fpu: Disable bottom halves while loading FPU registers
x86/mtrr: Don't copy uninitialized gentry fields back to userspace
Drivers: hv: vmbus: Return -EINVAL for the sys files for unopened channels
gpio: max7301: fix driver for use with CONFIG_VMAP_STACK
mmc: omap_hsmmc: fix DMA API warning
mmc: core: Use a minimum 1600ms timeout when enabling CACHE ctrl
mmc: core: Allow BKOPS and CACHE ctrl even if no HPI support
mmc: core: Reset HPI enabled state during re-init and in case of errors
USB: serial: option: add Telit LN940 series
USB: serial: option: add Fibocom NL668 series
USB: serial: option: add Simcom SIM7500/SIM7600 (MBIM mode)
USB: serial: option: add HP lt4132
USB: serial: option: add GosunCn ZTE WeLink ME3630
xhci: Don't prevent USB2 bus suspend in state check intended for USB3 only
USB: hso: Fix OOB memory access in hso_probe/hso_get_config_data
ib_srpt: Fix a use-after-free in __srpt_close_all_ch()
block: fix infinite loop if the device loses discard capability
block: break discard submissions into the user defined size
Linux 4.9.147
rtc: snvs: Add timeouts to avoid kernel lockups
rtc: snvs: add a missing write sync
nvmet-rdma: fix response use after free
i2c: scmi: Fix probe error on devices with an empty SMB0001 ACPI device node
i2c: axxia: properly handle master timeout
vhost/vsock: fix reset orphans race with close timeout
cifs: In Kconfig CONFIG_CIFS_POSIX needs depends on legacy (insecure cifs)
drm/ast: Fix connector leak during driver unload
ethernet: fman: fix wrong of_node_put() in probe function
ARM: 8815/1: V7M: align v7m_dma_inv_range() with v7 counterpart
ARM: 8814/1: mm: improve/fix ARM v7_dma_inv_range() unaligned address handling
bpf: check pending signals while verifying programs
net/mlx4_en: Fix build break when CONFIG_INET is off
mv88e6060: disable hardware level MAC learning
libata: whitelist all SAMSUNG MZ7KM* solid-state disks
Input: omap-keypad - fix keyboard debounce configuration
clk: mmp: Off by one in mmp_clk_add()
clk: mvebu: Off by one bugs in cp110_of_clk_get()
ide: pmac: add of_node_put()
drivers/tty: add missing of_node_put()
drivers/sbus/char: add of_node_put()
sbus: char: add of_node_put()
SUNRPC: Fix a potential race in xprt_connect()
nfs: don't dirty kernel pages read by direct-io
bonding: fix 802.3ad state sent to partner when unbinding slave
ARC: io.h: Implement reads{x}()/writes{x}()
drm/msm: Grab a vblank reference when waiting for commit_done
x86/earlyprintk/efi: Fix infinite loop on some screen widths
scsi: vmw_pscsi: Rearrange code to avoid multiple calls to free_irq during unload
scsi: libiscsi: Fix NULL pointer dereference in iscsi_eh_session_reset
mac80211_hwsim: fix module init error paths for netlink
locking/qspinlock: Fix build for anonymous union in older GCC compilers
locking/qspinlock, x86: Provide liveness guarantee
locking/qspinlock/x86: Increase _Q_PENDING_LOOPS upper bound
locking/qspinlock: Re-order code
locking/qspinlock: Kill cmpxchg() loop when claiming lock from head of queue
locking/qspinlock: Remove duplicate clear_pending() function from PV code
locking/qspinlock: Remove unbounded cmpxchg() loop from locking slowpath
locking/qspinlock: Merge 'struct __qspinlock' into 'struct qspinlock'
locking/qspinlock: Bound spinning on pending->locked transition in slowpath
locking/qspinlock: Ensure node is initialised before updating prev->next
locking: Remove smp_read_barrier_depends() from queued_spin_lock_slowpath()
IB/hfi1: Remove race conditions in user_sdma send path
mac80211: Fix condition validating WMM IE
mac80211: don't WARN on bad WMM parameters from buggy APs
drm/i915/execlists: Apply a full mb before execution for Braswell
Revert "drm/rockchip: Allow driver to be shutdown on reboot/kexec"
powerpc/msi: Fix NULL pointer access in teardown code
tracing: Fix memory leak of instance function hash filters
tracing: Fix memory leak in set_trigger_filter()
ARM: mmp/mmp2: fix cpu_is_mmp2() on mmp2-dt
MMC: OMAP: fix broken MMC on OMAP15XX/OMAP5910/OMAP310
aio: fix spectre gadget in lookup_ioctx
pinctrl: sunxi: a83t: Fix IRQ offset typo for PH11
timer/debug: Change /proc/timer_list from 0444 to 0400
lib/interval_tree_test.c: allow users to limit scope of endpoint
lib/rbtree-test: lower default params
lib/rbtree_test.c: make input module parameters
lib/interval_tree_test.c: allow full tree search
lib/interval_tree_test.c: make test options module parameters
signal: Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack
ANDROID: Revert fs/squashfs back to linux-4.9.y
BACKPORT, FROMGIT: dm verity: log the hash algorithm implementation
BACKPORT, FROMGIT: dm crypt: log the encryption algorithm implementation
Linux 4.9.146
staging: speakup: Replace strncpy with memcpy
pstore: Convert console write to use ->write_buf
ocfs2: fix potential use after free
debugobjects: avoid recursive calls with kmemleak
hfsplus: do not free node before using
hfs: do not free node before using
ocfs2: fix deadlock caused by ocfs2_defrag_extent()
fscache, cachefiles: remove redundant variable 'cache'
fscache: fix race between enablement and dropping of object
xen: xlate_mmu: add missing header to fix 'W=1' warning
drm/ast: fixed reading monitor EDID not stable issue
net: hisilicon: remove unexpected free_netdev
ixgbe: recognize 1000BaseLX SFP modules as 1Gbps
igb: fix uninitialized variables
cachefiles: Fix page leak in cachefiles_read_backing_file while vmscan is active
net: thunderx: fix NULL pointer dereference in nic_remove
x86/kvm/vmx: fix old-style function declaration
KVM: x86: fix empty-body warnings
USB: omap_udc: fix USB gadget functionality on Palm Tungsten E
USB: omap_udc: fix omap_udc_start() on 15xx machines
USB: omap_udc: fix crashes on probe error and module removal
USB: omap_udc: use devm_request_irq()
ipvs: call ip_vs_dst_notifier earlier than ipv6_dev_notf
bpf: fix check of allowed specifiers in bpf_trace_printk
exportfs: do not read dentry after free
ASoC: omap-dmic: Add pm_qos handling to avoid overruns with CPU_IDLE
ASoC: omap-mcpdm: Add pm_qos handling to avoid under/overruns with CPU_IDLE
RDMA/mlx5: Fix fence type for IB_WR_LOCAL_INV WR
Btrfs: send, fix infinite loop due to directory rename dependencies
objtool: Fix segfault in .cold detection with -ffunction-sections
objtool: Fix double-free in .cold detection error path
hwmon: (w83795) temp4_type has writable permission
ASoC: dapm: Recalculate audio map forcely when card instantiated
ASoC: omap-abe-twl6040: Fix missing audio card caused by deferred probing
hwmon: (ina2xx) Fix current value calculation
s390/cpum_cf: Reject request for sampling in event initialization
selftests: add script to stress-test nft packet path vs. control plane
sysv: return 'err' instead of 0 in __sysv_write_inode
ARM: OMAP1: ams-delta: Fix possible use of uninitialized field
ARM: dts: logicpd-somlv: Fix interrupt on mmc3_dat1
ARM: OMAP2+: prm44xx: Fix section annotation on omap44xx_prm_enable_io_wakeup
neighbour: Avoid writing before skb->head in neigh_hh_output()
tun: forbid iface creation with rtnl ops
tcp: fix NULL ref in tail loss probe
rtnetlink: ndo_dflt_fdb_dump() only work for ARPHRD_ETHER devices
net: Prevent invalid access to skb->prev in __qdisc_drop_all
net: phy: don't allow __set_phy_supported to add unsupported modes
net/mlx4_core: Correctly set PFC param if global pause is turned off.
net: 8139cp: fix a BUG triggered by changing mtu with network traffic
ipv6: Check available headroom in ip6_xmit() even without options
Makefile: Properly resolve conflict from 4.9.145
ANDROID: cuttlefish_defconfig: Enable CONFIG_CRYPTO_ADIANTUM
UPSTREAM: dm crypt: don't decrease device limits
BACKPORT: dm crypt: allow unaligned bv_offset
BACKPORT: dm crypt: reject sector_size feature if device length is not aligned to it
BACKPORT: dm crypt: use shifts instead of sector_div
BACKPORT: dm crypt: optionally support larger encryption sector size
BACKPORT, FROMGIT: fscrypt: add Adiantum support
BACKPORT, FROMGIT: crypto: adiantum - add Adiantum support
FROMGIT: crypto: arm/nhpoly1305 - add NEON-accelerated NHPoly1305
BACKPORT, FROMGIT: crypto: nhpoly1305 - add NHPoly1305 support
FROMGIT: crypto: poly1305 - add Poly1305 core API
FROMGIT: crypto: poly1305 - use structures for key and accumulator
BACKPORT, FROMGIT: crypto: arm/chacha - add XChaCha12 support
BACKPORT, FROMGIT: crypto: arm/chacha20 - refactor to allow varying number of rounds
BACKPORT, FROMGIT: crypto: arm/chacha20 - add XChaCha20 support
BACKPORT, FROMGIT: crypto: arm/chacha20 - limit the preemption-disabled section
BACKPORT, FROMGIT: crypto: chacha - add XChaCha12 support
BACKPORT, FROMGIT: crypto: chacha20-generic - refactor to allow varying number of rounds
BACKPORT, FROMGIT: crypto: chacha20-generic - add XChaCha20 support
FROMGIT: crypto: chacha20-generic - add HChaCha20 library function
FROMGIT: crypto: arm/aes - add some hardening against cache-timing attacks
UPSTREAM: crypto: arm/aes-cipher - move S-box to .rodata section
UPSTREAM: crypto: arm/aes - avoid expanded lookup tables in the final round
UPSTREAM: crypto: arm/aes - avoid reserved 'tt' mnemonic in asm code
BACKPORT: crypto: arm/aes - replace scalar AES cipher
UPSTREAM: crypto: poly1305 - use unaligned access macros to output digest
UPSTREAM: crypto: poly1305 - Use unaligned access where required
UPSTREAM: crypto: arm/chacha20 - faster 8-bit rotations and other optimizations
UPSTREAM: crypto: arm/chacha20 - always use vrev for 16-bit rotates
BACKPORT: crypto: arm/chacha20 - implement NEON version based on SSE3 code
BACKPORT: crypto: chacha20 - Fix chacha20_block() keystream alignment (again)
UPSTREAM: crypto: chacha20 - use rol32() macro from bitops.h
BACKPORT: crypto: chacha20 - Fix keystream alignment for chacha20_block()
UPSTREAM: crypto: chacha20 - Use unaligned access macros when loading key and IV
UPSTREAM: crypto: chacha20 - Fix unaligned access when loading constants
UPSTREAM: crypto: testmgr - fix overlap in chunked tests again
UPSTREAM: crypto: testmgr - avoid overlap in chunked tests
ANDROID: cuttlefish_defconfig: Enable VIRT_WIFI
FROMGIT, BACKPORT: mac80211-next: rtnetlink wifi simulation device
ANDROID: cuttlefish_defconfig: Enable CONFIG_ARM64_LSE_ATOMICS
ANDROID: Move from clang r328903 to r346389b.
ANDROID: arm64 defconfig / build config for cuttlefish
Conflicts:
drivers/char/random.c
drivers/md/dm-crypt.c
drivers/mmc/core/mmc.c
drivers/net/wireless/Kconfig
drivers/net/wireless/Makefile
fs/crypto/fscrypt_private.h
fs/crypto/keyinfo.c
include/uapi/linux/fs.h
Change-Id: I3f7617ac7ab346b0650757e25ef3e7daf4d97a1e
Signed-off-by: jianzhou <jianzhou@codeaurora.org>
In preparation for adding XChaCha12 support, rename/refactor
chacha20-generic to support different numbers of rounds. The
justification for needing XChaCha12 support is explained in more detail
in the patch "crypto: chacha - add XChaCha12 support".
The only difference between ChaCha{8,12,20} are the number of rounds
itself; all other parts of the algorithm are the same. Therefore,
remove the "20" from all definitions, structures, functions, files, etc.
that will be shared by all ChaCha versions.
Also make ->setkey() store the round count in the chacha_ctx (previously
chacha20_ctx). The generic code then passes the round count through to
chacha_block(). There will be a ->setkey() function for each explicitly
allowed round count; the encrypt/decrypt functions will be the same. I
decided not to do it the opposite way (same ->setkey() function for all
round counts, with different encrypt/decrypt functions) because that
would have required more boilerplate code in architecture-specific
implementations of ChaCha and XChaCha.
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Martin Willi <martin@strongswan.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit 1ca1b917940c24ca3d1f490118c5474168622953
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master)
Conflicts:
arch/arm/crypto/chacha20-neon-glue.c
arch/arm64/crypto/chacha20-neon-glue.c
arch/x86/crypto/chacha20_glue.c
drivers/char/random.c
drivers/crypto/caam/caamalg.c
drivers/crypto/caam/caamalg_qi2.c
drivers/crypto/caam/compat.h
include/crypto/chacha20.h
lib/Makefile
Bug: 112008522
Test: As series, see Ic61c13b53facfd2173065be715a7ee5f3af8760b
Change-Id: I7fa203ddc7095ce8675a32f49b8a5230cd0cf5f6
Signed-off-by: Eric Biggers <ebiggers@google.com>
* refs/heads/tmp-6a1b592:
Linux 4.9.124
reiserfs: fix broken xattr handling (heap corruption, bad retval)
i2c: imx: Fix race condition in dma read
PCI: pciehp: Fix unprotected list iteration in IRQ handler
PCI: pciehp: Fix use-after-free on unplug
PCI: Skip MPS logic for Virtual Functions (VFs)
PCI: hotplug: Don't leak pci_slot on registration failure
parisc: Remove unnecessary barriers from spinlock.h
packet: refine ring v3 block size test to hold one frame
netfilter: conntrack: dccp: treat SYNC/SYNCACK as invalid if no prior state
xfrm_user: prevent leaking 2 bytes of kernel memory
parisc: Remove ordered stores from syscall.S
ext4: fix spectre gadget in ext4_mb_regular_allocator()
KVM: irqfd: fix race between EPOLLHUP and irq_bypass_register_consumer
tcp: identify cryptic messages as TCP seq # bugs
net: qca_spi: Fix log level if probe fails
net: qca_spi: Make sure the QCA7000 reset is triggered
net: qca_spi: Avoid packet drop during initial sync
PCI: versatile: Fix I/O space page leak
PCI: OF: Fix I/O space page leak
net: usb: rtl8150: demote allmulti message to dev_dbg()
net/ethernet/freescale/fman: fix cross-build error
drm/nouveau/gem: off by one bugs in nouveau_gem_pushbuf_reloc_apply()
pinctrl: nsp: Fix potential NULL dereference
pinctrl: nsp: off by ones in nsp_pinmux_enable()
tcp: remove DELAYED ACK events in DCTCP
qlogic: check kstrtoul() for errors
packet: reset network header if packet shorter than ll reserved space
tools: build: Use HOSTLDFLAGS with fixdep
ixgbe: Be more careful when modifying MAC filters
ARM: dts: am3517.dtsi: Disable reference to OMAP3 OTG controller
ARM: DRA7/OMAP5: Enable ACTLR[0] (Enable invalidates of BTB) for secondary cores
ARM: 8780/1: ftrace: Only set kernel memory back to read-only after boot
RDMA/mlx5: Fix memory leak in mlx5_ib_create_srq() error path
nfit: fix unchecked dereference in acpi_nfit_ctl
perf llvm-utils: Remove bashism from kernel include fetch script
bnxt_en: Fix for system hang if request_irq fails
bnxt_en: Always set output parameters in bnxt_get_max_rings().
ARC: Improve cmpxchg syscall implementation
netfilter: nf_conntrack: Fix possible possible crash on module loading.
drm/armada: fix colorkey mode property
ieee802154: fakelb: switch from BUG_ON() to WARN_ON() on problem
ieee802154: at86rf230: use __func__ macro for debug messages
ieee802154: at86rf230: switch from BUG_ON() to WARN_ON() on problem
net/sched: act_tunnel_key: fix NULL dereference when 'goto chain' is used
ARM: pxa: irq: fix handling of ICMR registers in suspend/resume
ravb: fix invalid context bug while changing link options by ethtool
ravb: fix invalid context bug while calling auto-negotiation by ethtool
sh_eth: fix invalid context bug while changing link options by ethtool
sh_eth: fix invalid context bug while calling auto-negotiation by ethtool
net: qrtr: Broadcast messages only from control port
ipv6: make ipv6_renew_options() interrupt/kernel safe
netfilter: x_tables: set module owner for icmp(6) matches
ieee802154: 6lowpan: set IFLA_LINK
samples/bpf: Check the error of write() and read()
samples/bpf: add missing <linux/if_vlan.h>
smsc75xx: Add workaround for gigabit link up hardware errata.
kasan: fix shadow_size calculation error in kasan_module_alloc
tracing: Use __printf markup to silence compiler
ARM: imx_v4_v5_defconfig: Select ULPI support
ARM: imx_v6_v7_defconfig: Select ULPI support
HID: wacom: Correct touch maximum XY of 2nd-gen Intuos
ipvlan: call dev_change_flags when ipvlan mode is reset
objtool: Support GCC 8 '-fnoreorder-functions'
m68k: fix "bad page state" oops on ColdFire boot
acpi/nfit: fix cmd_rc for acpi_nfit_ctl to always return a value
bnx2x: Fix receiving tx-timeout in error or recovery state.
PCI: xilinx-nwl: Add missing of_node_put()
PCI: xilinx: Add missing of_node_put()
bpf, s390: fix potential memleak when later bpf_jit_prog fails
drm/exynos: decon5433: Fix WINCONx reset value
drm/exynos: decon5433: Fix per-plane global alpha for XRGB modes
drm/exynos: gsc: Fix support for NV16/61, YUV420/YVU420 and YUV422 modes
nl80211: relax ht operation checks for mesh
md/raid10: fix that replacement cannot complete recovery after reassemble
dmaengine: k3dma: Off by one in k3_of_dma_simple_xlate()
dmaengine: pl330: report BURST residue granularity
ARM: dts: da850: Fix interrups property for gpio
selftests/x86/sigreturn: Do minor cleanups
selftests/x86/sigreturn/64: Fix spurious failures on AMD CPUs
ceph: fix dentry leak in splice_dentry()
netfilter: nf_log: fix uninit read in nf_log_proc_dostring
perf bench: Fix numa report output code
perf report powerpc: Fix crash if callchain is empty
perf test session topology: Fix test on s390
NFC: pn533: Fix wrong GFP flag usage
usb: xhci: increase CRS timeout value
usb: xhci: remove the code build warning
ALSA: seq: Fix UBSAN warning at SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT ioctl
ARM: dts: am437x: make edt-ft5x06 a wakeup source
brcmfmac: stop watchdog before detach and free everything
iio: pressure: bmp280: fix relative humidity unit
cxgb4: when disabling dcb set txq dcb priority to 0
batman-adv: Fix bat_v best gw refcnt after netlink dump
batman-adv: Fix bat_ogm_iv best gw refcnt after netlink dump
Smack: Mark inode instant in smack_task_to_inode
ipv6: mcast: fix unsolicited report interval after receiving querys
locking/lockdep: Do not record IRQ state within lockdep code
KVM: arm/arm64: Drop resource size check for GICV window
net: davinci_emac: match the mdio device against its compatible if possible
ARC: Enable machine_desc->init_per_cpu for !CONFIG_SMP
nvmet: reset keep alive timer in controller enable
net: stmmac: socfpga: add additional ocp reset line for Stratix10
net: propagate dev_get_valid_name return code
net: hamradio: use eth_broadcast_addr
enic: initialize enic->rfs_h.lock in enic_probe
qed: Add sanity check for SIMD fastpath handler.
arm64: make secondary_start_kernel() notrace
xen/scsiback: add error handling for xenbus_printf
scsi: xen-scsifront: add error handling for xenbus_printf
xen: add error handling for xenbus_printf
usb: gadget: dwc2: fix memory leak in gadget_init()
usb: gadget: composite: fix delayed_status race condition when set_interface
usb: dwc2: fix isoc split in transfer with no data
libahci: Fix possible Spectre-v1 pmp indexing in ahci_led_store()
IB/rxe: Fix missing completion for mem_reg work requests
drm: mali-dp: Enable Global SE interrupts mask for DP500
arm64: dts: ns2: Fix I2C controller interrupt type
ARM: dts: Cygnus: Fix PCIe controller interrupt type
ARM: dts: Cygnus: Fix I2C controller interrupt type
ARM: dts: NSP: Fix PCIe controllers interrupt types
ARM: dts: NSP: Fix i2c controller interrupt type
selftests: sync: add config fragment for testing sync framework
selftests: zram: return Kselftest Skip code for skipped tests
selftests: user: return Kselftest Skip code for skipped tests
selftests: static_keys: return Kselftest Skip code for skipped tests
selftests: pstore: return Kselftest Skip code for skipped tests
netfilter: ipv6: nf_defrag: reduce struct net memory waste
usb: dwc3: of-simple: fix use-after-free on remove
ARC: Explicitly add -mmedium-calls to CFLAGS
x86/entry/64: Remove %ebx handling from error_entry/exit
BACKPORT: slub: make sysfs directories for memcg sub-caches optional
ANDROID: x86_64_cuttlefish_defconfig: Enable zram and zstd
BACKPORT: zram: introduce zram memory tracking
BACKPORT: zram: record accessed second
BACKPORT: zram: mark incompressible page as ZRAM_HUGE
UPSTREAM: zram: correct flag name of ZRAM_ACCESS
UPSTREAM: zram: Delete gendisk before cleaning up the request queue
UPSTREAM: drivers/block/zram/zram_drv.c: make zram_page_end_io() static
BACKPORT: zram: set BDI_CAP_STABLE_WRITES once
UPSTREAM: zram: fix null dereference of handle
UPSTREAM: zram: add config and doc file for writeback feature
UPSTREAM: zram: read page from backing device
UPSTREAM: zram: write incompressible pages to backing device
UPSTREAM: zram: identify asynchronous IO's return value
BACKPORT: zram: add free space management in backing device
UPSTREAM: zram: add interface to specif backing device
UPSTREAM: zram: rename zram_decompress_page to __zram_bvec_read
UPSTREAM: zram: inline zram_compress
UPSTREAM: zram: clean up duplicated codes in __zram_bvec_write
BACKPORT: crypto: zstd - Add zstd support
UPSTREAM: zram: add zstd to the supported algorithms list
UPSTREAM: lib: Add zstd modules
UPSTREAM: lib: Add xxhash module
UPSTREAM: zram: rework copy of compressor name in comp_algorithm_store()
UPSTREAM: zram: constify attribute_group structures.
UPSTREAM: zram: count same page write as page_stored
UPSTREAM: zram: reduce load operation in page_same_filled
UPSTREAM: zram: use zram_free_page instead of open-coded
UPSTREAM: zram: introduce zram data accessor
UPSTREAM: zram: remove zram_meta structure
UPSTREAM: zram: use zram_slot_lock instead of raw bit_spin_lock op
UPSTREAM: zram: partial IO refactoring
BACKPORT: zram: handle multiple pages attached bio's bvec
UPSTREAM: zram: fix operator precedence to get offset
BACKPORT: zram: extend zero pages to same element pages
UPSTREAM: zram: remove waitqueue for IO done
UPSTREAM: zram: remove obsolete sysfs attrs
UPSTREAM: socket: close race condition between sock_close() and sockfs_setattr()
Conflicts:
drivers/block/zram/zram_drv.c
Change-Id: I9834b4ec29d4d317b928027b77becf66da5644b9
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
Signed-off-by: Minming Qi <mqi@codeaurora.org>
Blagovest Kolenichevauthored and Minming Qicommited 2018-11-01 10:47:07 +08:00
Add zstd compression and decompression kernel modules.
zstd offers a wide varity of compression speed and quality trade-offs.
It can compress at speeds approaching lz4, and quality approaching lzma.
zstd decompressions at speeds more than twice as fast as zlib, and
decompression speed remains roughly the same across all compression levels.
The code was ported from the upstream zstd source repository. The
`linux/zstd.h` header was modified to match linux kernel style.
The cross-platform and allocation code was stripped out. Instead zstd
requires the caller to pass a preallocated workspace. The source files
were clang-formatted [1] to match the Linux Kernel style as much as
possible. Otherwise, the code was unmodified. We would like to avoid
as much further manual modification to the source code as possible, so it
will be easier to keep the kernel zstd up to date.
I benchmarked zstd compression as a special character device. I ran zstd
and zlib compression at several levels, as well as performing no
compression, which measure the time spent copying the data to kernel space.
Data is passed to the compresser 4096 B at a time. The benchmark file is
located in the upstream zstd source repository under
`contrib/linux-kernel/zstd_compress_test.c` [2].
I ran the benchmarks on a Ubuntu 14.04 VM with 2 cores and 4 GiB of RAM.
The VM is running on a MacBook Pro with a 3.1 GHz Intel Core i7 processor,
16 GB of RAM, and a SSD. I benchmarked using `silesia.tar` [3], which is
211,988,480 B large. Run the following commands for the benchmark:
sudo modprobe zstd_compress_test
sudo mknod zstd_compress_test c 245 0
sudo cp silesia.tar zstd_compress_test
The time is reported by the time of the userland `cp`.
The MB/s is computed with
1,536,217,008 B / time(buffer size, hash)
which includes the time to copy from userland.
The Adjusted MB/s is computed with
1,536,217,088 B / (time(buffer size, hash) - time(buffer size, none)).
The memory reported is the amount of memory the compressor requests.
| Method | Size (B) | Time (s) | Ratio | MB/s | Adj MB/s | Mem (MB) |
|----------|----------|----------|-------|---------|----------|----------|
| none | 11988480 | 0.100 | 1 | 2119.88 | - | - |
| zstd -1 | 73645762 | 1.044 | 2.878 | 203.05 | 224.56 | 1.23 |
| zstd -3 | 66988878 | 1.761 | 3.165 | 120.38 | 127.63 | 2.47 |
| zstd -5 | 65001259 | 2.563 | 3.261 | 82.71 | 86.07 | 2.86 |
| zstd -10 | 60165346 | 13.242 | 3.523 | 16.01 | 16.13 | 13.22 |
| zstd -15 | 58009756 | 47.601 | 3.654 | 4.45 | 4.46 | 21.61 |
| zstd -19 | 54014593 | 102.835 | 3.925 | 2.06 | 2.06 | 60.15 |
| zlib -1 | 77260026 | 2.895 | 2.744 | 73.23 | 75.85 | 0.27 |
| zlib -3 | 72972206 | 4.116 | 2.905 | 51.50 | 52.79 | 0.27 |
| zlib -6 | 68190360 | 9.633 | 3.109 | 22.01 | 22.24 | 0.27 |
| zlib -9 | 67613382 | 22.554 | 3.135 | 9.40 | 9.44 | 0.27 |
I benchmarked zstd decompression using the same method on the same machine.
The benchmark file is located in the upstream zstd repo under
`contrib/linux-kernel/zstd_decompress_test.c` [4]. The memory reported is
the amount of memory required to decompress data compressed with the given
compression level. If you know the maximum size of your input, you can
reduce the memory usage of decompression irrespective of the compression
level.
| Method | Time (s) | MB/s | Adjusted MB/s | Memory (MB) |
|----------|----------|---------|---------------|-------------|
| none | 0.025 | 8479.54 | - | - |
| zstd -1 | 0.358 | 592.15 | 636.60 | 0.84 |
| zstd -3 | 0.396 | 535.32 | 571.40 | 1.46 |
| zstd -5 | 0.396 | 535.32 | 571.40 | 1.46 |
| zstd -10 | 0.374 | 566.81 | 607.42 | 2.51 |
| zstd -15 | 0.379 | 559.34 | 598.84 | 4.61 |
| zstd -19 | 0.412 | 514.54 | 547.77 | 8.80 |
| zlib -1 | 0.940 | 225.52 | 231.68 | 0.04 |
| zlib -3 | 0.883 | 240.08 | 247.07 | 0.04 |
| zlib -6 | 0.844 | 251.17 | 258.84 | 0.04 |
| zlib -9 | 0.837 | 253.27 | 287.64 | 0.04 |
Tested in userland using the test-suite in the zstd repo under
`contrib/linux-kernel/test/UserlandTest.cpp` [5] by mocking the kernel
functions. Fuzz tested using libfuzzer [6] with the fuzz harnesses under
`contrib/linux-kernel/test/{RoundTripCrash.c,DecompressCrash.c}` [7] [8]
with ASAN, UBSAN, and MSAN. Additionaly, it was tested while testing the
BtrFS and SquashFS patches coming next.
[1] https://clang.llvm.org/docs/ClangFormat.html
[2] https://github.com/facebook/zstd/blob/dev/contrib/linux-kernel/zstd_compress_test.c
[3] http://sun.aei.polsl.pl/~sdeor/index.php?page=silesia
[4] https://github.com/facebook/zstd/blob/dev/contrib/linux-kernel/zstd_decompress_test.c
[5] https://github.com/facebook/zstd/blob/dev/contrib/linux-kernel/test/UserlandTest.cpp
[6] http://llvm.org/docs/LibFuzzer.html
[7] https://github.com/facebook/zstd/blob/dev/contrib/linux-kernel/test/RoundTripCrash.c
[8] https://github.com/facebook/zstd/blob/dev/contrib/linux-kernel/test/DecompressCrash.c
zstd source repository: https://github.com/facebook/zstd
Signed-off-by: Nick Terrell <terrelln@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
(cherry picked from commit 73f3d1b48f5069d46ba48aa28c2898dc93185560)
Signed-off-by: Peter Kalauskas <peskal@google.com>
Bug: 112488418
Change-Id: I6321071707a322683a4b35d047e7410c5a67acdc
Nick Terrellauthored and Peter Kalauskascommited 2018-08-23 12:05:06 -07:00
Adds xxhash kernel module with xxh32 and xxh64 hashes. xxhash is an
extremely fast non-cryptographic hash algorithm for checksumming.
The zstd compression and decompression modules added in the next patch
require xxhash. I extracted it out from zstd since it is useful on its
own. I copied the code from the upstream XXHash source repository and
translated it into kernel style. I ran benchmarks and tests in the kernel
and tests in userland.
I benchmarked xxhash as a special character device. I ran in four modes,
no-op, xxh32, xxh64, and crc32. The no-op mode simply copies the data to
kernel space and ignores it. The xxh32, xxh64, and crc32 modes compute
hashes on the copied data. I also ran it with four different buffer sizes.
The benchmark file is located in the upstream zstd source repository under
`contrib/linux-kernel/xxhash_test.c` [1].
I ran the benchmarks on a Ubuntu 14.04 VM with 2 cores and 4 GiB of RAM.
The VM is running on a MacBook Pro with a 3.1 GHz Intel Core i7 processor,
16 GB of RAM, and a SSD. I benchmarked using the file `filesystem.squashfs`
from `ubuntu-16.10-desktop-amd64.iso`, which is 1,536,217,088 B large.
Run the following commands for the benchmark:
modprobe xxhash_test
mknod xxhash_test c 245 0
time cp filesystem.squashfs xxhash_test
The time is reported by the time of the userland `cp`.
The GB/s is computed with
1,536,217,008 B / time(buffer size, hash)
which includes the time to copy from userland.
The Normalized GB/s is computed with
1,536,217,088 B / (time(buffer size, hash) - time(buffer size, none)).
| Buffer Size (B) | Hash | Time (s) | GB/s | Adjusted GB/s |
|-----------------|-------|----------|------|---------------|
| 1024 | none | 0.408 | 3.77 | - |
| 1024 | xxh32 | 0.649 | 2.37 | 6.37 |
| 1024 | xxh64 | 0.542 | 2.83 | 11.46 |
| 1024 | crc32 | 1.290 | 1.19 | 1.74 |
| 4096 | none | 0.380 | 4.04 | - |
| 4096 | xxh32 | 0.645 | 2.38 | 5.79 |
| 4096 | xxh64 | 0.500 | 3.07 | 12.80 |
| 4096 | crc32 | 1.168 | 1.32 | 1.95 |
| 8192 | none | 0.351 | 4.38 | - |
| 8192 | xxh32 | 0.614 | 2.50 | 5.84 |
| 8192 | xxh64 | 0.464 | 3.31 | 13.60 |
| 8192 | crc32 | 1.163 | 1.32 | 1.89 |
| 16384 | none | 0.346 | 4.43 | - |
| 16384 | xxh32 | 0.590 | 2.60 | 6.30 |
| 16384 | xxh64 | 0.466 | 3.30 | 12.80 |
| 16384 | crc32 | 1.183 | 1.30 | 1.84 |
Tested in userland using the test-suite in the zstd repo under
`contrib/linux-kernel/test/XXHashUserlandTest.cpp` [2] by mocking the
kernel functions. A line in each branch of every function in `xxhash.c`
was commented out to ensure that the test-suite fails. Additionally
tested while testing zstd and with SMHasher [3].
[1] https://phabricator.intern.facebook.com/P57526246
[2] https://github.com/facebook/zstd/blob/dev/contrib/linux-kernel/test/XXHashUserlandTest.cpp
[3] https://github.com/aappleby/smhasher
zstd source repository: https://github.com/facebook/zstd
XXHash source repository: https://github.com/cyan4973/xxhash
Signed-off-by: Nick Terrell <terrelln@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
(cherry picked from commit 5d2405227a9eaea48e8cc95756a06d407b11f141)
Signed-off-by: Peter Kalauskas <peskal@google.com>
Bug: 112488418
Change-Id: Icffe9d5edd641795f40137e389672e81967c1842
Nick Terrellauthored and Peter Kalauskascommited 2018-08-23 12:05:06 -07:00
This snapshot is taken as of msm-4.4 'commit <d2afad6a903b>
("Merge "ext4 crypto: enable HW based encryption with ICE"")'.
Fix the code style warnings and errors.
CRs-Fixed: 1079350
Change-Id: I7dfcaac6dd2f97b109793aee97db6e9951282194
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@codeaurora.org>
Karthikeyan Ramasubramanianauthored and Gerrit - the friendly Code Review servercommited 2016-11-11 17:31:37 -08:00
There's no point in collecting coverage from lib/stackdepot.c, as it is
not a function of syscall inputs. Disabling kcov instrumentation for that
file will reduce the coverage noise level.
Link: http://lkml.kernel.org/r/1474640972-104131-1-git-send-email-glider@google.com
Signed-off-by: Alexander Potapenko <glider@google.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Kostya Serebryany <kcc@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: syzkaller <syzkaller@googlegroups.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alexander Potapenkoauthored and Linus Torvaldscommited 2016-10-11 15:06:32 -07:00
Pull block layer updates from Jens Axboe:
"This is the main pull request for block layer changes in 4.9.
As mentioned at the last merge window, I've changed things up and now
do just one branch for core block layer changes, and driver changes.
This avoids dependencies between the two branches. Outside of this
main pull request, there are two topical branches coming as well.
This pull request contains:
- A set of fixes, and a conversion to blk-mq, of nbd. From Josef.
- Set of fixes and updates for lightnvm from Matias, Simon, and Arnd.
Followup dependency fix from Geert.
- General fixes from Bart, Baoyou, Guoqing, and Linus W.
- CFQ async write starvation fix from Glauber.
- Add supprot for delayed kick of the requeue list, from Mike.
- Pull out the scalable bitmap code from blk-mq-tag.c and make it
generally available under the name of sbitmap. Only blk-mq-tag uses
it for now, but the blk-mq scheduling bits will use it as well.
From Omar.
- bdev thaw error progagation from Pierre.
- Improve the blk polling statistics, and allow the user to clear
them. From Stephen.
- Set of minor cleanups from Christoph in block/blk-mq.
- Set of cleanups and optimizations from me for block/blk-mq.
- Various nvme/nvmet/nvmeof fixes from the various folks"
* 'for-4.9/block' of git://git.kernel.dk/linux-block: (54 commits)
fs/block_dev.c: return the right error in thaw_bdev()
nvme: Pass pointers, not dma addresses, to nvme_get/set_features()
nvme/scsi: Remove power management support
nvmet: Make dsm number of ranges zero based
nvmet: Use direct IO for writes
admin-cmd: Added smart-log command support.
nvme-fabrics: Add host_traddr options field to host infrastructure
nvme-fabrics: revise host transport option descriptions
nvme-fabrics: rework nvmf_get_address() for variable options
nbd: use BLK_MQ_F_BLOCKING
blkcg: Annotate blkg_hint correctly
cfq: fix starvation of asynchronous writes
blk-mq: add flag for drivers wanting blocking ->queue_rq()
blk-mq: remove non-blocking pass in blk_mq_map_request
blk-mq: get rid of manual run of queue with __blk_mq_run_hw_queue()
block: export bio_free_pages to other modules
lightnvm: propagate device_add() error code
lightnvm: expose device geometry through sysfs
lightnvm: control life of nvm_dev in driver
blk-mq: register device instead of disk
...
This commit introduces a generic library to estimate either the min or
max value of a time-varying variable over a recent time window. This
is code originally from Kathleen Nichols. The current form of the code
is from Van Jacobson.
A single struct minmax_sample will track the estimated windowed-max
value of the series if you call minmax_running_max() or the estimated
windowed-min value of the series if you call minmax_running_min().
Nearly equivalent code is already in place for minimum RTT estimation
in the TCP stack. This commit extracts that code and generalizes it to
handle both min and max. Moving the code here reduces the footprint
and complexity of the TCP code base and makes the filter generally
available for other parts of the codebase, including an upcoming TCP
congestion control module.
This library works well for time series where the measurements are
smoothly increasing or decreasing.
Signed-off-by: Van Jacobson <vanj@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Nandita Dukkipati <nanditad@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Neal Cardwellauthored and David S. Millercommited 2016-09-21 00:22:59 -04:00
This is a generally useful data structure, so make it available to
anyone else who might want to use it. It's also a nice cleanup
separating the allocation logic from the rest of the tag handling logic.
The code is behind a new Kconfig option, CONFIG_SBITMAP, which is only
selected by CONFIG_BLOCK for now.
This should be a complete noop functionality-wise.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Omar Sandovalauthored and Jens Axboecommited 2016-09-17 08:38:44 -06:00
There are three usercopy warnings which are currently being silenced for
gcc 4.6 and newer:
1) "copy_from_user() buffer size is too small" compile warning/error
This is a static warning which happens when object size and copy size
are both const, and copy size > object size. I didn't see any false
positives for this one. So the function warning attribute seems to
be working fine here.
Note this scenario is always a bug and so I think it should be
changed to *always* be an error, regardless of
CONFIG_DEBUG_STRICT_USER_COPY_CHECKS.
2) "copy_from_user() buffer size is not provably correct" compile warning
This is another static warning which happens when I enable
__compiletime_object_size() for new compilers (and
CONFIG_DEBUG_STRICT_USER_COPY_CHECKS). It happens when object size
is const, but copy size is *not*. In this case there's no way to
compare the two at build time, so it gives the warning. (Note the
warning is a byproduct of the fact that gcc has no way of knowing
whether the overflow function will be called, so the call isn't dead
code and the warning attribute is activated.)
So this warning seems to only indicate "this is an unusual pattern,
maybe you should check it out" rather than "this is a bug".
I get 102(!) of these warnings with allyesconfig and the
__compiletime_object_size() gcc check removed. I don't know if there
are any real bugs hiding in there, but from looking at a small
sample, I didn't see any. According to Kees, it does sometimes find
real bugs. But the false positive rate seems high.
3) "Buffer overflow detected" runtime warning
This is a runtime warning where object size is const, and copy size >
object size.
All three warnings (both static and runtime) were completely disabled
for gcc 4.6 with the following commit:
2fb0815c9e ("gcc4: disable __compiletime_object_size for GCC 4.6+")
That commit mistakenly assumed that the false positives were caused by a
gcc bug in __compiletime_object_size(). But in fact,
__compiletime_object_size() seems to be working fine. The false
positives were instead triggered by #2 above. (Though I don't have an
explanation for why the warnings supposedly only started showing up in
gcc 4.6.)
So remove warning #2 to get rid of all the false positives, and re-enable
warnings #1 and #3 by reverting the above commit.
Furthermore, since #1 is a real bug which is detected at compile time,
upgrade it to always be an error.
Having done all that, CONFIG_DEBUG_STRICT_USER_COPY_CHECKS is no longer
needed.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Byungchul Park <byungchul.park@lge.com>
Cc: Nilay Vaish <nilayvaish@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Josh Poimboeufauthored and Linus Torvaldscommited 2016-08-30 10:10:21 -07:00
important is the use of a ChaCha20-based CRNG for /dev/urandom, which
is faster, more efficient, and easier to make scalable for
silly/abusive userspace programs that want to read from /dev/urandom
in a tight loop on NUMA systems.
This set of patches also improves entropy gathering on VM's running on
Microsoft Azure, and will take advantage of a hw random number
generator (if present) to initialize the /dev/urandom pool.
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Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random
Pull random driver updates from Ted Ts'o:
"A number of improvements for the /dev/random driver; the most
important is the use of a ChaCha20-based CRNG for /dev/urandom, which
is faster, more efficient, and easier to make scalable for
silly/abusive userspace programs that want to read from /dev/urandom
in a tight loop on NUMA systems.
This set of patches also improves entropy gathering on VM's running on
Microsoft Azure, and will take advantage of a hw random number
generator (if present) to initialize the /dev/urandom pool"
(It turns out that the random tree hadn't been in linux-next this time
around, because it had been dropped earlier as being too quiet. Oh
well).
* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
random: strengthen input validation for RNDADDTOENTCNT
random: add backtracking protection to the CRNG
random: make /dev/urandom scalable for silly userspace programs
random: replace non-blocking pool with a Chacha20-based CRNG
random: properly align get_random_int_hash
random: add interrupt callback to VMBus IRQ handler
random: print a warning for the first ten uninitialized random users
random: initialize the non-blocking pool via add_hwgenerator_randomness()
People complained about ARCH_HWEIGHT_CFLAGS and how it throws a wrench
into kcov, lto, etc, experimentations.
Add asm versions for __sw_hweight{32,64}() and do explicit saving and
restoring of clobbered registers. This gets rid of the special calling
convention. We get to call those functions on !X86_FEATURE_POPCNT CPUs.
We still need to hardcode POPCNT and register operands as some old gas
versions which we support, do not know about POPCNT.
Btw, remove redundant REX prefix from 32-bit POPCNT because alternatives
can do padding now.
Suggested-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1464605787-20603-1-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Borislav Petkovauthored and Ingo Molnarcommited 2016-06-08 15:01:02 +02:00
It appears that somehow I missed a test of the latest UUID rework which
landed in the kernel. Present a small test module to avoid such cases
in the future.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Shevchenkoauthored and Linus Torvaldscommited 2016-05-30 15:26:57 -07:00
Pull string hash improvements from George Spelvin:
"This series does several related things:
- Makes the dcache hash (fs/namei.c) useful for general kernel use.
(Thanks to Bruce for noticing the zero-length corner case)
- Converts the string hashes in <linux/sunrpc/svcauth.h> to use the
above.
- Avoids 64-bit multiplies in hash_64() on 32-bit platforms. Two
32-bit multiplies will do well enough.
- Rids the world of the bad hash multipliers in hash_32.
This finishes the job started in commit 689de1d6ca ("Minimal
fix-up of bad hashing behavior of hash_64()")
The vast majority of Linux architectures have hardware support for
32x32-bit multiply and so derive no benefit from "simplified"
multipliers.
The few processors that do not (68000, h8/300 and some models of
Microblaze) have arch-specific implementations added. Those
patches are last in the series.
- Overhauls the dcache hash mixing.
The patch in commit 0fed3ac866 ("namei: Improve hash mixing if
CONFIG_DCACHE_WORD_ACCESS") was an off-the-cuff suggestion.
Replaced with a much more careful design that's simultaneously
faster and better. (My own invention, as there was noting suitable
in the literature I could find. Comments welcome!)
- Modify the hash_name() loop to skip the initial HASH_MIX(). This
would let us salt the hash if we ever wanted to.
- Sort out partial_name_hash().
The hash function is declared as using a long state, even though
it's truncated to 32 bits at the end and the extra internal state
contributes nothing to the result. And some callers do odd things:
- fs/hfs/string.c only allocates 32 bits of state
- fs/hfsplus/unicode.c uses it to hash 16-bit unicode symbols not bytes
- Modify bytemask_from_count to handle inputs of 1..sizeof(long)
rather than 0..sizeof(long)-1. This would simplify users other
than full_name_hash"
Special thanks to Bruce Fields for testing and finding bugs in v1. (I
learned some humbling lessons about "obviously correct" code.)
On the arch-specific front, the m68k assembly has been tested in a
standalone test harness, I've been in contact with the Microblaze
maintainers who mostly don't care, as the hardware multiplier is never
omitted in real-world applications, and I haven't heard anything from
the H8/300 world"
* 'hash' of git://ftp.sciencehorizons.net/linux:
h8300: Add <asm/hash.h>
microblaze: Add <asm/hash.h>
m68k: Add <asm/hash.h>
<linux/hash.h>: Add support for architecture-specific functions
fs/namei.c: Improve dcache hash function
Eliminate bad hash multipliers from hash_32() and hash_64()
Change hash_64() return value to 32 bits
<linux/sunrpc/svcauth.h>: Define hash_str() in terms of hashlen_string()
fs/namei.c: Add hashlen_string() function
Pull out string hash to <linux/stringhash.h>
This is just the infrastructure; there are no users yet.
This is modelled on CONFIG_ARCH_RANDOM; a CONFIG_ symbol declares
the existence of <asm/hash.h>.
That file may define its own versions of various functions, and define
HAVE_* symbols (no CONFIG_ prefix!) to suppress the generic ones.
Included is a self-test (in lib/test_hash.c) that verifies the basics.
It is NOT in general required that the arch-specific functions compute
the same thing as the generic, but if a HAVE_* symbol is defined with
the value 1, then equality is tested.
Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Cc: Philippe De Muyter <phdm@macq.eu>
Cc: linux-m68k@lists.linux-m68k.org
Cc: Alistair Francis <alistai@xilinx.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: uclinux-h8-devel@lists.sourceforge.jp
Lots of code does
node = next_node(node, XXX);
if (node == MAX_NUMNODES)
node = first_node(XXX);
so create next_node_in() to do this and use it in various places.
[mhocko@suse.com: use next_node_in() helper]
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Laura Abbott <lauraa@codeaurora.org>
Cc: Hui Zhu <zhuhui@xiaomi.com>
Cc: Wang Xiaoqiang <wangxq10@lzu.edu.cn>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Mortonauthored and Linus Torvaldscommited 2016-05-19 19:12:14 -07:00
This patch includes the usual quota of driver updates (bnx2fc, mp3sas,
hpsa, ncr5380, lpfc, hisi_sas, snic, aacraid, megaraid_sas) there's
also a multiqueue update for scsi_debug, assorted bug fixes and a few
other minor updates (refactor of scsi_sg_pools into generic code, alua
and VPD updates, and struct timeval conversions).
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"First round of SCSI updates for the 4.6+ merge window.
This batch includes the usual quota of driver updates (bnx2fc, mp3sas,
hpsa, ncr5380, lpfc, hisi_sas, snic, aacraid, megaraid_sas). There's
also a multiqueue update for scsi_debug, assorted bug fixes and a few
other minor updates (refactor of scsi_sg_pools into generic code, alua
and VPD updates, and struct timeval conversions)"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (138 commits)
mpt3sas: Used "synchronize_irq()"API to synchronize timed-out IO & TMs
mpt3sas: Set maximum transfer length per IO to 4MB for VDs
mpt3sas: Updating mpt3sas driver version to 13.100.00.00
mpt3sas: Fix initial Reference tag field for 4K PI drives.
mpt3sas: Handle active cable exception event
mpt3sas: Update MPI header to 2.00.42
Revert "lpfc: Delete unnecessary checks before the function call mempool_destroy"
eata_pio: missing break statement
hpsa: Fix type ZBC conditional checks
scsi_lib: Decode T10 vendor IDs
scsi_dh_alua: do not fail for unknown VPD identification
scsi_debug: use locally assigned naa
scsi_debug: uuid for lu name
scsi_debug: vpd and mode page work
scsi_debug: add multiple queue support
bfa: fix bfa_fcb_itnim_alloc() error handling
megaraid_sas: Downgrade two success messages to info
cxlflash: Fix to resolve dead-lock during EEH recovery
scsi_debug: rework resp_report_luns
scsi_debug: use pdt constants
...
Now it's ready to move the mempool based SG chained allocator code from
SCSI driver to lib/sg_pool.c, which will be compiled only based on a Kconfig
symbol CONFIG_SG_POOL.
SCSI selects CONFIG_SG_POOL.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Ming Linauthored and Martin K. Petersencommited 2016-04-15 16:53:14 -04:00
By accident I stumbled across code that is no longer used. According
to git grep, the global functions in lib/proportions.c are not used
anywhere. This patch removes the old, unused code.
Peter Zijlstra further commented:
"Ah indeed, that got replaced with the flex proportion code a while back."
Signed-off-by: Richard Cochran <rcochran@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/4265b49bed713fbe3faaf8c05da0e1792f09c0b3.1459432020.git.rcochran@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Richard Cochranauthored and Ingo Molnarcommited 2016-04-01 08:53:49 +02:00
Implement the stack depot and provide CONFIG_STACKDEPOT. Stack depot
will allow KASAN store allocation/deallocation stack traces for memory
chunks. The stack traces are stored in a hash table and referenced by
handles which reside in the kasan_alloc_meta and kasan_free_meta
structures in the allocated memory chunks.
IRQ stack traces are cut below the IRQ entry point to avoid unnecessary
duplication.
Right now stackdepot support is only enabled in SLAB allocator. Once
KASAN features in SLAB are on par with those in SLUB we can switch SLUB
to stackdepot as well, thus removing the dependency on SLUB stack
bookkeeping, which wastes a lot of memory.
This patch is based on the "mm: kasan: stack depots" patch originally
prepared by Dmitry Chernenkov.
Joonsoo has said that he plans to reuse the stackdepot code for the
mm/page_owner.c debugging facility.
[akpm@linux-foundation.org: s/depot_stack_handle/depot_stack_handle_t]
[aryabinin@virtuozzo.com: comment style fixes]
Signed-off-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Andrey Konovalov <adech.fo@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Konstantin Serebryany <kcc@google.com>
Cc: Dmitry Chernenkov <dmitryc@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alexander Potapenkoauthored and Linus Torvaldscommited 2016-03-25 16:37:42 -07:00
kcov provides code coverage collection for coverage-guided fuzzing
(randomized testing). Coverage-guided fuzzing is a testing technique
that uses coverage feedback to determine new interesting inputs to a
system. A notable user-space example is AFL
(http://lcamtuf.coredump.cx/afl/). However, this technique is not
widely used for kernel testing due to missing compiler and kernel
support.
kcov does not aim to collect as much coverage as possible. It aims to
collect more or less stable coverage that is function of syscall inputs.
To achieve this goal it does not collect coverage in soft/hard
interrupts and instrumentation of some inherently non-deterministic or
non-interesting parts of kernel is disbled (e.g. scheduler, locking).
Currently there is a single coverage collection mode (tracing), but the
API anticipates additional collection modes. Initially I also
implemented a second mode which exposes coverage in a fixed-size hash
table of counters (what Quentin used in his original patch). I've
dropped the second mode for simplicity.
This patch adds the necessary support on kernel side. The complimentary
compiler support was added in gcc revision 231296.
We've used this support to build syzkaller system call fuzzer, which has
found 90 kernel bugs in just 2 months:
https://github.com/google/syzkaller/wiki/Found-Bugs
We've also found 30+ bugs in our internal systems with syzkaller.
Another (yet unexplored) direction where kcov coverage would greatly
help is more traditional "blob mutation". For example, mounting a
random blob as a filesystem, or receiving a random blob over wire.
Why not gcov. Typical fuzzing loop looks as follows: (1) reset
coverage, (2) execute a bit of code, (3) collect coverage, repeat. A
typical coverage can be just a dozen of basic blocks (e.g. an invalid
input). In such context gcov becomes prohibitively expensive as
reset/collect coverage steps depend on total number of basic
blocks/edges in program (in case of kernel it is about 2M). Cost of
kcov depends only on number of executed basic blocks/edges. On top of
that, kernel requires per-thread coverage because there are always
background threads and unrelated processes that also produce coverage.
With inlined gcov instrumentation per-thread coverage is not possible.
kcov exposes kernel PCs and control flow to user-space which is
insecure. But debugfs should not be mapped as user accessible.
Based on a patch by Quentin Casasnovas.
[akpm@linux-foundation.org: make task_struct.kcov_mode have type `enum kcov_mode']
[akpm@linux-foundation.org: unbreak allmodconfig]
[akpm@linux-foundation.org: follow x86 Makefile layout standards]
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: syzkaller <syzkaller@googlegroups.com>
Cc: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Tavis Ormandy <taviso@google.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Kostya Serebryany <kcc@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Kees Cook <keescook@google.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: David Drysdale <drysdale@google.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dmitry Vyukovauthored and Linus Torvaldscommited 2016-03-22 15:36:02 -07:00
This adds basic polling support for vhost.
Reworks virtio to optionally use DMA API, fixing it on Xen.
Balloon stats gained a new entry.
Using the new napi_alloc_skb speeds up virtio net.
virtio blk stats can now be read while another VCPU
us busy inflating or deflating the balloon.
Plus misc cleanups in various places.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio/vhost updates from Michael Tsirkin:
"New features, performance improvements, cleanups:
- basic polling support for vhost
- rework virtio to optionally use DMA API, fixing it on Xen
- balloon stats gained a new entry
- using the new napi_alloc_skb speeds up virtio net
- virtio blk stats can now be read while another VCPU is busy
inflating or deflating the balloon
plus misc cleanups in various places"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio_net: replace netdev_alloc_skb_ip_align() with napi_alloc_skb()
vhost_net: basic polling support
vhost: introduce vhost_vq_avail_empty()
vhost: introduce vhost_has_work()
virtio_balloon: Allow to resize and update the balloon stats in parallel
virtio_balloon: Use a workqueue instead of "vballoon" kthread
virtio/s390: size of SET_IND payload
virtio/s390: use dev_to_virtio
vhost: rename vhost_init_used()
vhost: rename cross-endian helpers
virtio_blk: VIRTIO_BLK_F_WCE->VIRTIO_BLK_F_FLUSH
vring: Use the DMA API on Xen
virtio_pci: Use the DMA API if enabled
virtio_mmio: Use the DMA API if enabled
virtio: Add improved queue allocation API
virtio_ring: Support DMA APIs
vring: Introduce vring_use_dma_api()
s390/dma: Allow per device dma ops
alpha/dma: use common noop dma ops
dma: Provide simple noop dma ops
We are going to require dma_ops for several common drivers, even for
systems that do have an identity mapping. Lets provide some minimal
no-op dma_ops that can be used for that purpose.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Christian Borntraegerauthored and Michael S. Tsirkincommited 2016-03-02 17:01:55 +02:00
This is mainly testing bitmap construction and conversion to/from u32[]
for now.
Tested:
qemu i386, x86_64, ppc, ppc64 BE and LE, ARM.
Signed-off-by: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Decotignyauthored and David S. Millercommited 2016-02-19 22:54:09 -05:00
- Remove usage of ib_query_device and instead store attributes in
ib_device struct
- Move iopoll out of block and into lib, rename to irqpoll, and use
in several places in the rdma stack as our new completion queue
polling library mechanism. Update the other block drivers that
already used iopoll to use the new mechanism too.
- Replace the per-entry GID table locks with a single GID table lock
- IPoIB multicast cleanup
- Cleanups to the IB MR facility
- Add support for 64bit extended IB counters
- Fix for netlink oops while parsing RDMA nl messages
- RoCEv2 support for the core IB code
- mlx4 RoCEv2 support
- mlx5 RoCEv2 support
- Cross Channel support for mlx5
- Timestamp support for mlx5
- Atomic support for mlx5
- Raw QP support for mlx5
- MAINTAINERS update for mlx4/mlx5
- Misc ocrdma, qib, nes, usNIC, cxgb3, cxgb4, mlx4, mlx5 updates
- Add support for remote invalidate to the iSER driver (pushed through the
RDMA tree due to dependencies, acknowledged by nab)
- Update to NFSoRDMA (pushed through the RDMA tree due to dependencies,
acknowledged by Bruce)
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull rdma updates from Doug Ledford:
"Initial roundup of 4.5 merge window patches
- Remove usage of ib_query_device and instead store attributes in
ib_device struct
- Move iopoll out of block and into lib, rename to irqpoll, and use
in several places in the rdma stack as our new completion queue
polling library mechanism. Update the other block drivers that
already used iopoll to use the new mechanism too.
- Replace the per-entry GID table locks with a single GID table lock
- IPoIB multicast cleanup
- Cleanups to the IB MR facility
- Add support for 64bit extended IB counters
- Fix for netlink oops while parsing RDMA nl messages
- RoCEv2 support for the core IB code
- mlx4 RoCEv2 support
- mlx5 RoCEv2 support
- Cross Channel support for mlx5
- Timestamp support for mlx5
- Atomic support for mlx5
- Raw QP support for mlx5
- MAINTAINERS update for mlx4/mlx5
- Misc ocrdma, qib, nes, usNIC, cxgb3, cxgb4, mlx4, mlx5 updates
- Add support for remote invalidate to the iSER driver (pushed
through the RDMA tree due to dependencies, acknowledged by nab)
- Update to NFSoRDMA (pushed through the RDMA tree due to
dependencies, acknowledged by Bruce)"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (169 commits)
IB/mlx5: Unify CQ create flags check
IB/mlx5: Expose Raw Packet QP to user space consumers
{IB, net}/mlx5: Move the modify QP operation table to mlx5_ib
IB/mlx5: Support setting Ethernet priority for Raw Packet QPs
IB/mlx5: Add Raw Packet QP query functionality
IB/mlx5: Add create and destroy functionality for Raw Packet QP
IB/mlx5: Refactor mlx5_ib_qp to accommodate other QP types
IB/mlx5: Allocate a Transport Domain for each ucontext
net/mlx5_core: Warn on unsupported events of QP/RQ/SQ
net/mlx5_core: Add RQ and SQ event handling
net/mlx5_core: Export transport objects
IB/mlx5: Expose CQE version to user-space
IB/mlx5: Add CQE version 1 support to user QPs and SRQs
IB/mlx5: Fix data validation in mlx5_ib_alloc_ucontext
IB/sa: Fix netlink local service GFP crash
IB/srpt: Remove redundant wc array
IB/qib: Improve ipoib UD performance
IB/mlx4: Advertise RoCE v2 support
IB/mlx4: Create and use another QP1 for RoCEv2
IB/mlx4: Enable send of RoCE QP1 packets with IP/UDP headers
...
UBSAN uses compile-time instrumentation to catch undefined behavior
(UB). Compiler inserts code that perform certain kinds of checks before
operations that could cause UB. If check fails (i.e. UB detected)
__ubsan_handle_* function called to print error message.
So the most of the work is done by compiler. This patch just implements
ubsan handlers printing errors.
GCC has this capability since 4.9.x [1] (see -fsanitize=undefined
option and its suboptions).
However GCC 5.x has more checkers implemented [2].
Article [3] has a bit more details about UBSAN in the GCC.
[1] - https://gcc.gnu.org/onlinedocs/gcc-4.9.0/gcc/Debugging-Options.html
[2] - https://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html
[3] - http://developerblog.redhat.com/2014/10/16/gcc-undefined-behavior-sanitizer-ubsan/
Issues which UBSAN has found thus far are:
Found bugs:
* out-of-bounds access - 97840cb67f ("netfilter: nfnetlink: fix
insufficient validation in nfnetlink_bind")
undefined shifts:
* d48458d4a7 ("jbd2: use a better hash function for the revoke
table")
* 10632008b9 ("clockevents: Prevent shift out of bounds")
* 'x << -1' shift in ext4 -
http://lkml.kernel.org/r/<5444EF21.8020501@samsung.com>
* undefined rol32(0) -
http://lkml.kernel.org/r/<1449198241-20654-1-git-send-email-sasha.levin@oracle.com>
* undefined dirty_ratelimit calculation -
http://lkml.kernel.org/r/<566594E2.3050306@odin.com>
* undefined roundown_pow_of_two(0) -
http://lkml.kernel.org/r/<1449156616-11474-1-git-send-email-sasha.levin@oracle.com>
* [WONTFIX] undefined shift in __bpf_prog_run -
http://lkml.kernel.org/r/<CACT4Y+ZxoR3UjLgcNdUm4fECLMx2VdtfrENMtRRCdgHB2n0bJA@mail.gmail.com>
WONTFIX here because it should be fixed in bpf program, not in kernel.
signed overflows:
* 32a8df4e0b ("sched: Fix odd values in effective_load()
calculations")
* mul overflow in ntp -
http://lkml.kernel.org/r/<1449175608-1146-1-git-send-email-sasha.levin@oracle.com>
* incorrect conversion into rtc_time in rtc_time64_to_tm() -
http://lkml.kernel.org/r/<1449187944-11730-1-git-send-email-sasha.levin@oracle.com>
* unvalidated timespec in io_getevents() -
http://lkml.kernel.org/r/<CACT4Y+bBxVYLQ6LtOKrKtnLthqLHcw-BMp3aqP3mjdAvr9FULQ@mail.gmail.com>
* [NOTABUG] signed overflow in ktime_add_safe() -
http://lkml.kernel.org/r/<CACT4Y+aJ4muRnWxsUe1CMnA6P8nooO33kwG-c8YZg=0Xc8rJqw@mail.gmail.com>
[akpm@linux-foundation.org: fix unused local warning]
[akpm@linux-foundation.org: fix __int128 build woes]
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Yury Gribov <y.gribov@samsung.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Kostya Serebryany <kcc@google.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrey Ryabininauthored and Linus Torvaldscommited 2016-01-20 17:09:18 -08:00
The clz table (__clz_tab) in lib/clz_tab.c is also provided as part of
libgcc.a, and many architectures link against libgcc. To allow the
linker to avoid a multiple-definition link failure, clz_tab.o has to be
in lib/lib.a rather than lib/builtin.o. The specific issue is that
libgcc.a comes before lib/builtin.o on vmlinux.o's link command line, so
its _clz.o is pulled to satisfy __clz_tab, and then when the remainder
of lib/builtin.o is pulled in to satisfy all the other dependencies, the
__clz_tab symbols conflict. By putting clz_tab.o in lib.a, the linker
can simply avoid pulling it into vmlinux.o when this situation arises.
The definitions of __clz_tab are the same in libgcc.a and in the kernel;
arguably we could also simply rename the kernel version, but it's
unlikely the libgcc version will ever change to become incompatible, so
just using it seems reasonably safe.
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Chris Metcalfauthored and Linus Torvaldscommited 2016-01-20 17:09:18 -08:00
The test suite currently doesn't cover many corner cases when
hex_dump_to_buffer() runs into overflow. Refactor and amend test suite
to cover most of the cases.
This patch (of 9):
Just to follow the scheme that most of the test modules are using.
There is no fuctional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Shevchenkoauthored and Linus Torvaldscommited 2016-01-20 17:09:18 -08:00
The new name is irq_poll as iopoll is already taken. Better suggestions
welcome.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Christoph Hellwigcommited 2015-12-11 11:52:24 -08:00
This module allows to insert errors in some of netdevice's notifier
events. All network drivers use these notifiers to signal various events
and to check if they are allowed, e.g. PRECHANGEMTU and CHANGEMTU
afterwards. Until recently I had to run failure tests by injecting
a custom module, but now this infrastructure makes it trivial to test
these failure paths. Some of the recent bugs I fixed were found using
this module.
Here's an example:
$ cd /sys/kernel/debug/notifier-error-inject/netdev
$ echo -22 > actions/NETDEV_CHANGEMTU/error
$ ip link set eth0 mtu 1024
RTNETLINK answers: Invalid argument
CC: Akinobu Mita <akinobu.mita@gmail.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: netdev <netdev@vger.kernel.org>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nikolay Aleksandrovauthored and David S. Millercommited 2015-12-01 15:31:57 -05:00
JackA1ltman
authored and
Sorayukii
commited 
Masami Hiramatsu
authored and
Peter Zijlstra
authored and
Michael Bestas
commited 
Eric Biggers
commited 
Jason A. Donenfeld
authored and
Greg Kroah-Hartman
commited 
Greg Kroah-Hartman
commited 
Arnd Bergmann
authored and
Tengfei Fan
commited 
jianzhou
commited 
Andrey Konovalov
authored and
Alistair Strachan
commited 
Blagovest Kolenichev
authored and
Minming Qi
commited 
Nick Terrell
authored and
Peter Kalauskas
commited 
Patrick Daly
commited 
Karthikeyan Ramasubramanian
authored and
Gerrit - the friendly Code Review server
commited 
Alexander Potapenko
authored and
Linus Torvalds
commited 
Neal Cardwell
authored and
David S. Miller
commited 
Omar Sandoval
authored and
Jens Axboe
commited 
Josh Poimboeuf
authored and
Theodore Ts'o
commited 
Borislav Petkov
authored and
Ingo Molnar
commited 
Andy Shevchenko
authored and
George Spelvin
commited 
Andrew Morton
authored and
Ming Lin
authored and
Martin K. Petersen
commited 
Richard Cochran
authored and
Dmitry Vyukov
authored and
Christian Borntraeger
authored and
Michael S. Tsirkin
commited 
David Decotigny
authored and
Andrey Ryabinin
authored and
Chris Metcalf
authored and
Christoph Hellwig
commited 
Nikolay Aleksandrov
authored and