mirror of
https://github.com/a52xq-dev/kernel.git
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These changes build upon the existing Android kernel wakeup reason code to: * improve the positioning of suspend abort logging calls in suspend flow * add logging of abnormal wakeup reasons like unexpected HW IRQs and IRQs configured as both wake-enabled and no-suspend * add support for capturing deferred-processing threaded nested IRQs as wakeup reasons rather than their synchronously-processed parents Bug: 150970830 Bug: 140217217 Signed-off-by: Kelly Rossmoyer <krossmo@google.com> Change-Id: I903b811a0fe11a605a25815c3a341668a23de700 
Kelly Rossmoyer
authored and
 Alistair Delva
commited |
e7b509cf04 | |
QoS request for CPU_DMA_LATENCY can be better optimized if the request can be set only for the required cpus and not all cpus. This helps save power on other cores, while still gauranteeing the quality of service. Enhance the QoS constraints data structures to support target value for each core. Requests specify if the QoS is applicable to all cores (default) or to a selective subset of the cores or to a core(s), that the IRQ is affine to. QoS requests that need to track an IRQ can be set to apply only on the cpus to which the IRQ's smp_affinity attribute is set to. The QoS framework will automatically track IRQ migration between the cores. The QoS is updated to be applied only to the core(s) that the IRQ has been migrated to. Idle and interested drivers can request a PM QoS value for a constraint across all cpus, or a specific cpu or a set of cpus. Separate APIs have been added to request for individual cpu or a cpumask. The default behaviour of PM QoS is maintained i.e, requests that do not specify a type of the request will continue to be effected on all cores. Requests that want to specify an affinity of cpu(s) or an irq, can modify the PM QoS request data structures by specifying the type of the request and either the mask of the cpus or the IRQ number depending on the type. Updating the request does not reset the type of the request. The userspace sysfs interface does not support CPU/IRQ affinity. Signed-off-by: Lina Iyer <ilina@codeaurora.org> (cherry picked from commit 16cafdb44fb3a66a7d06936d775efe483ad62b7d) Bug: 153463922 Test: build Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: I1aad836a985fd303f2254fe607bb909a6b720dd5 
Lina Iyer
authored and
 Suren Baghdasaryan
commited |
723feab600 | |
It's long been possible to disable kernel module autoloading completely
(while still allowing manual module insertion) by setting
/proc/sys/kernel/modprobe to the empty string. This can be preferable
to setting it to a nonexistent file since it avoids the overhead of an
attempted execve(), avoids potential deadlocks, and avoids the call to
security_kernel_module_request() and thus on SELinux-based systems
eliminates the need to write SELinux rules to dontaudit module_request.
However, when module autoloading is disabled in this way,
request_module() returns 0. This is broken because callers expect 0 to
mean that the module was successfully loaded.
Apparently this was never noticed because this method of disabling
module autoloading isn't used much, and also most callers don't use the
return value of request_module() since it's always necessary to check
whether the module registered its functionality or not anyway. But
improperly returning 0 can indeed confuse a few callers, for example
get_fs_type() in fs/filesystems.c where it causes a WARNING to be hit:
if (!fs && (request_module("fs-%.*s", len, name) == 0)) {
fs = __get_fs_type(name, len);
WARN_ONCE(!fs, "request_module fs-%.*s succeeded, but still no fs?\n", len, name);
}
This is easily reproduced with:
echo > /proc/sys/kernel/modprobe
mount -t NONEXISTENT none /
It causes:
request_module fs-NONEXISTENT succeeded, but still no fs?
WARNING: CPU: 1 PID: 1106 at fs/filesystems.c:275 get_fs_type+0xd6/0xf0
[...]
This should actually use pr_warn_once() rather than WARN_ONCE(), since
it's also user-reachable if userspace immediately unloads the module.
Regardless, request_module() should correctly return an error when it
fails. So let's make it return -ENOENT, which matches the error when
the modprobe binary doesn't exist.
I've also sent patches to document and test this case.
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Jessica Yu <jeyu@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jeff Vander Stoep <jeffv@google.com>
Cc: NeilBrown <neilb@suse.com>
Link: https://lore.kernel.org/r/20200318230515.171692-2-ebiggers@kernel.org
Bug: 151589316
Change-Id: I5e04f85e12a4f85da23e53bc11da1ade565abcd6
Signed-off-by: Eric Biggers <ebiggers@google.com>
Eric Biggers
commited |
a898a4764c | |
A previous change added a test on the wrong config flag; rename CFI to CFI_CLANG. Bug: 145210207 Change-Id: Id8aead2eb2c75ad6442d10165f6cb86ccfb9c2f9 Signed-off-by: Alistair Delva <adelva@google.com>
Alistair Delva
commited |
182b38fc31 | |
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Merge 4.19.114 into android-4.19
Changes in 4.19.114
mmc: core: Allow host controllers to require R1B for CMD6
mmc: core: Respect MMC_CAP_NEED_RSP_BUSY for erase/trim/discard
mmc: core: Respect MMC_CAP_NEED_RSP_BUSY for eMMC sleep command
mmc: sdhci-omap: Fix busy detection by enabling MMC_CAP_NEED_RSP_BUSY
mmc: sdhci-tegra: Fix busy detection by enabling MMC_CAP_NEED_RSP_BUSY
Revert "drm/dp_mst: Skip validating ports during destruction, just ref"
geneve: move debug check after netdev unregister
hsr: fix general protection fault in hsr_addr_is_self()
macsec: restrict to ethernet devices
mlxsw: spectrum_mr: Fix list iteration in error path
net: cbs: Fix software cbs to consider packet sending time
net: dsa: Fix duplicate frames flooded by learning
net: mvneta: Fix the case where the last poll did not process all rx
net/packet: tpacket_rcv: avoid a producer race condition
net: qmi_wwan: add support for ASKEY WWHC050
net_sched: cls_route: remove the right filter from hashtable
net_sched: keep alloc_hash updated after hash allocation
net: stmmac: dwmac-rk: fix error path in rk_gmac_probe
NFC: fdp: Fix a signedness bug in fdp_nci_send_patch()
slcan: not call free_netdev before rtnl_unlock in slcan_open
bnxt_en: fix memory leaks in bnxt_dcbnl_ieee_getets()
bnxt_en: Reset rings if ring reservation fails during open()
net: ip_gre: Separate ERSPAN newlink / changelink callbacks
net: ip_gre: Accept IFLA_INFO_DATA-less configuration
net: dsa: mt7530: Change the LINK bit to reflect the link status
net: phy: mdio-mux-bcm-iproc: check clk_prepare_enable() return value
r8169: re-enable MSI on RTL8168c
tcp: repair: fix TCP_QUEUE_SEQ implementation
vxlan: check return value of gro_cells_init()
hsr: use rcu_read_lock() in hsr_get_node_{list/status}()
hsr: add restart routine into hsr_get_node_list()
hsr: set .netnsok flag
cgroup-v1: cgroup_pidlist_next should update position index
nfs: add minor version to nfs_server_key for fscache
cpupower: avoid multiple definition with gcc -fno-common
drivers/of/of_mdio.c:fix of_mdiobus_register()
cgroup1: don't call release_agent when it is ""
dt-bindings: net: FMan erratum A050385
arm64: dts: ls1043a: FMan erratum A050385
fsl/fman: detect FMan erratum A050385
s390/qeth: handle error when backing RX buffer
scsi: ipr: Fix softlockup when rescanning devices in petitboot
mac80211: Do not send mesh HWMP PREQ if HWMP is disabled
dpaa_eth: Remove unnecessary boolean expression in dpaa_get_headroom
sxgbe: Fix off by one in samsung driver strncpy size arg
ftrace/x86: Anotate text_mutex split between ftrace_arch_code_modify_post_process() and ftrace_arch_code_modify_prepare()
i2c: hix5hd2: add missed clk_disable_unprepare in remove
Input: raydium_i2c_ts - fix error codes in raydium_i2c_boot_trigger()
Input: synaptics - enable RMI on HP Envy 13-ad105ng
Input: avoid BIT() macro usage in the serio.h UAPI header
ceph: check POOL_FLAG_FULL/NEARFULL in addition to OSDMAP_FULL/NEARFULL
ARM: dts: dra7: Add bus_dma_limit for L3 bus
ARM: dts: omap5: Add bus_dma_limit for L3 bus
perf probe: Do not depend on dwfl_module_addrsym()
tools: Let O= makes handle a relative path with -C option
scripts/dtc: Remove redundant YYLOC global declaration
scsi: sd: Fix optimal I/O size for devices that change reported values
nl80211: fix NL80211_ATTR_CHANNEL_WIDTH attribute type
mac80211: mark station unauthorized before key removal
gpiolib: acpi: Correct comment for HP x2 10 honor_wakeup quirk
gpiolib: acpi: Rework honor_wakeup option into an ignore_wake option
gpiolib: acpi: Add quirk to ignore EC wakeups on HP x2 10 BYT + AXP288 model
RDMA/core: Ensure security pkey modify is not lost
genirq: Fix reference leaks on irq affinity notifiers
xfrm: handle NETDEV_UNREGISTER for xfrm device
vti[6]: fix packet tx through bpf_redirect() in XinY cases
RDMA/mlx5: Block delay drop to unprivileged users
xfrm: fix uctx len check in verify_sec_ctx_len
xfrm: add the missing verify_sec_ctx_len check in xfrm_add_acquire
xfrm: policy: Fix doulbe free in xfrm_policy_timer
afs: Fix some tracing details
netfilter: flowtable: reload ip{v6}h in nf_flow_tuple_ip{v6}
netfilter: nft_fwd_netdev: validate family and chain type
bpf/btf: Fix BTF verification of enum members in struct/union
vti6: Fix memory leak of skb if input policy check fails
Revert "r8169: check that Realtek PHY driver module is loaded"
mac80211: add option for setting control flags
mac80211: set IEEE80211_TX_CTRL_PORT_CTRL_PROTO for nl80211 TX
USB: serial: option: add support for ASKEY WWHC050
USB: serial: option: add BroadMobi BM806U
USB: serial: option: add Wistron Neweb D19Q1
USB: cdc-acm: restore capability check order
USB: serial: io_edgeport: fix slab-out-of-bounds read in edge_interrupt_callback
usb: musb: fix crash with highmen PIO and usbmon
media: flexcop-usb: fix endpoint sanity check
media: usbtv: fix control-message timeouts
staging: rtl8188eu: Add ASUS USB-N10 Nano B1 to device table
staging: wlan-ng: fix ODEBUG bug in prism2sta_disconnect_usb
staging: wlan-ng: fix use-after-free Read in hfa384x_usbin_callback
ahci: Add Intel Comet Lake H RAID PCI ID
libfs: fix infoleak in simple_attr_read()
media: ov519: add missing endpoint sanity checks
media: dib0700: fix rc endpoint lookup
media: stv06xx: add missing descriptor sanity checks
media: xirlink_cit: add missing descriptor sanity checks
mac80211: Check port authorization in the ieee80211_tx_dequeue() case
mac80211: fix authentication with iwlwifi/mvm
vt: selection, introduce vc_is_sel
vt: ioctl, switch VT_IS_IN_USE and VT_BUSY to inlines
vt: switch vt_dont_switch to bool
vt: vt_ioctl: remove unnecessary console allocation checks
vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console
vt: vt_ioctl: fix use-after-free in vt_in_use()
platform/x86: pmc_atom: Add Lex 2I385SW to critclk_systems DMI table
bpf: Explicitly memset the bpf_attr structure
bpf: Explicitly memset some bpf info structures declared on the stack
gpiolib: acpi: Add quirk to ignore EC wakeups on HP x2 10 CHT + AXP288 model
net: ks8851-ml: Fix IO operations, again
arm64: alternative: fix build with clang integrated assembler
perf map: Fix off by one in strncpy() size argument
ARM: dts: oxnas: Fix clear-mask property
ARM: bcm2835-rpi-zero-w: Add missing pinctrl name
ARM: dts: imx6: phycore-som: fix arm and soc minimum voltage
ARM: dts: N900: fix onenand timings
arm64: dts: ls1043a-rdb: correct RGMII delay mode to rgmii-id
arm64: dts: ls1046ardb: set RGMII interfaces to RGMII_ID mode
Linux 4.19.114
Change-Id: Icc165d2e49aba750e1b5a8856d9774c149e59ce7
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Greg Kroah-Hartman
commited |
6ca29140d7 | |
A module uses these symbols. So, export them to allow loading of that module. Bug: 149816871 Bug: 149256712 Signed-off-by: Saravana Kannan <saravanak@google.com> Change-Id: I949da5d091894ea3d79a6c9244bfc2f8426eee71 (cherry picked from commit dc928ba3bdfb4527e0ffca7c491d946a02e5bd11) [ qperret: made changes to commit message for AOSP compliance ] Signed-off-by: Quentin Perret <qperret@google.com> 
Saravana Kannan
commited |
1d887ea976 | |
commit 5c6f25887963f15492b604dd25cb149c501bbabf upstream.
Trying to initialize a structure with "= {};" will not always clean out
all padding locations in a structure. So be explicit and call memset to
initialize everything for a number of bpf information structures that
are then copied from userspace, sometimes from smaller memory locations
than the size of the structure.
Reported-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20200320162258.GA794295@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman
commited |
638d8c748e | |
commit 8096f229421f7b22433775e928d506f0342e5907 upstream. For the bpf syscall, we are relying on the compiler to properly zero out the bpf_attr union that we copy userspace data into. Unfortunately that doesn't always work properly, padding and other oddities might not be correctly zeroed, and in some tests odd things have been found when the stack is pre-initialized to other values. Fix this by explicitly memsetting the structure to 0 before using it. Reported-by: Maciej Żenczykowski <maze@google.com> Reported-by: John Stultz <john.stultz@linaro.org> Reported-by: Alexander Potapenko <glider@google.com> Reported-by: Alistair Delva <adelva@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://android-review.googlesource.com/c/kernel/common/+/1235490 Link: https://lore.kernel.org/bpf/20200320094813.GA421650@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman
commited |
aca6a9b098 | |
commit da6c7faeb103c493e505e87643272f70be586635 upstream.
btf_enum_check_member() was currently sure to recognize the size of
"enum" type members in struct/union as the size of "int" even if
its size was packed.
This patch fixes BTF enum verification to use the correct size
of member in BPF programs.
Fixes:
Yoshiki Komachi
authored and
Greg Kroah-Hartman
commited |
fb957d1003 | |
commit df81dfcfd6991d547653d46c051bac195cd182c1 upstream.
The handling of notify->work did not properly maintain notify->kref in two
cases:
1) where the work was already scheduled, another irq_set_affinity_locked()
would get the ref and (no-op-ly) schedule the work. Thus when
irq_affinity_notify() ran, it would drop the original ref but not the
additional one.
2) when cancelling the (old) work in irq_set_affinity_notifier(), if there
was outstanding work a ref had been got for it but was never put.
Fix both by checking the return values of the work handling functions
(schedule_work() for (1) and cancel_work_sync() for (2)) and put the
extra ref if the return value indicates preexisting work.
Fixes:
Edward Cree
authored and
Greg Kroah-Hartman
commited |
277db1b634 | |
[ Upstream commit 2e5383d7904e60529136727e49629a82058a5607 ]
Older (and maybe current) versions of systemd set release_agent to "" when
shutting down, but do not set notify_on_release to 0.
Since
Tycho Andersen
authored and
Greg Kroah-Hartman
commited |
5a8a69435d | |
[ Upstream commit db8dd9697238be70a6b4f9d0284cd89f59c0e070 ] if seq_file .next fuction does not change position index, read after some lseek can generate unexpected output. # mount | grep cgroup # dd if=/mnt/cgroup.procs bs=1 # normal output ... 1294 1295 1296 1304 1382 584+0 records in 584+0 records out 584 bytes copied dd: /mnt/cgroup.procs: cannot skip to specified offset 83 <<< generates end of last line 1383 <<< ... and whole last line once again 0+1 records in 0+1 records out 8 bytes copied dd: /mnt/cgroup.procs: cannot skip to specified offset 1386 <<< generates last line anyway 0+1 records in 0+1 records out 5 bytes copied https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
Vasily Averin
authored and
Greg Kroah-Hartman
commited |
967e97461e | |
If we failed to find a fitting CPU, in cpupri_find(), we only fallback to the level we found a hit at. But Steve suggested to fallback to a second full scan instead as this could be a better effort. https://lore.kernel.org/lkml/20200304135404.146c56eb@gandalf.local.home/ We trigger the 2nd search unconditionally since the argument about triggering a full search is that the recorded fall back level might have become empty by then. Which means storing any data about what happened would be meaningless and stale. I had a humble try at timing it and it seemed okay for the small 6 CPUs system I was running on https://lore.kernel.org/lkml/20200305124324.42x6ehjxbnjkklnh@e107158-lin.cambridge.arm.com/ On large system this second full scan could be expensive. But there are no users outside capacity awareness for this fitness function at the moment. Heterogeneous systems tend to be small with 8cores in total. Bug: 120440300 Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: https://lkml.kernel.org/r/20200310142219.syxzn5ljpdxqtbgx@e107158-lin.cambridge.arm.com (cherry picked from commit e94f80f6c49020008e6fa0f3d4b806b8595d17d8 https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core) Signed-off-by: Qais Yousef <qais.yousef@arm.com> Change-Id: Ib20d400be47cd913a43a5c71fafee6a7fffb78aa 
Qais Yousef
commited |
b38208f02b | |
In task_woken_rt() and switched_to_rto() we try trigger push-pull if the task is unfit. But the logic is found lacking because if the task was the only one running on the CPU, then rt_rq is not in overloaded state and won't trigger a push. The necessity of this logic was under a debate as well, a summary of the discussion can be found in the following thread: https://lore.kernel.org/lkml/20200226160247.iqvdakiqbakk2llz@e107158-lin.cambridge.arm.com/ Remove the logic for now until a better approach is agreed upon. Bug: 120440300 Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Fixes: 804d402fb6f6 ("sched/rt: Make RT capacity-aware") Link: https://lkml.kernel.org/r/20200302132721.8353-6-qais.yousef@arm.com (cherry picked from commit d94a9df49069ba8ff7c4aaeca1229e6471a01a15 https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core) Signed-off-by: Qais Yousef <qais.yousef@arm.com> Change-Id: Id120ada4a89972b3feb8d8b022babb98db1a157f
Qais Yousef
commited |
32061ff6b5 | |
When implemented RT Capacity Awareness; the logic was done such that if a task was running on a fitting CPU, then it was sticky and we would try our best to keep it there. But as Steve suggested, to adhere to the strict priority rules of RT class; allow pulling an RT task to unfitting CPU to ensure it gets a chance to run ASAP. Bug: 120440300 LINK: https://lore.kernel.org/lkml/20200203111451.0d1da58f@oasis.local.home/ Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Fixes: 804d402fb6f6 ("sched/rt: Make RT capacity-aware") Link: https://lkml.kernel.org/r/20200302132721.8353-5-qais.yousef@arm.com (cherry picked from commit 98ca645f824301bde72e0a51cdc8bdbbea6774a5 https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core) [Trivial merge conflict] Signed-off-by: Qais Yousef <qais.yousef@arm.com> Change-Id: Ie25fa5a4f3b0979ed06df8d156e5586b2928479e
Qais Yousef
commited |
8efce17187 | |
By introducing a new cpupri_find_fitness() function that takes the fitness_fn as an argument and only called when asym_system static key is enabled. cpupri_find() is now a wrapper function that calls cpupri_find_fitness() passing NULL as a fitness_fn, hence disabling the logic that handles fitness by default. Bug: 120440300 LINK: https://lore.kernel.org/lkml/c0772fca-0a4b-c88d-fdf2-5715fcf8447b@arm.com/ Reported-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Fixes: 804d402fb6f6 ("sched/rt: Make RT capacity-aware") Link: https://lkml.kernel.org/r/20200302132721.8353-4-qais.yousef@arm.com (cherry picked from commit a1bd02e1f28b1939cac8c64072a0e578c3cbc345 https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core) Signed-off-by: Qais Yousef <qais.yousef@arm.com> Change-Id: I8ad4d9e391030ae499f7a1805485147de64abcdf
Qais Yousef
commited |
2bf4a52c7a | |
When RT Capacity Aware support was added, the logic in select_task_rq_rt was modified to force a search for a fitting CPU if the task currently doesn't run on one. But if the search failed, and the search was only triggered to fulfill the fitness request; we could end up selecting a new CPU unnecessarily. Fix this and re-instate the original behavior by ensuring we bail out in that case. This behavior change only affected asymmetric systems that are using util_clamp to implement capacity aware. None asymmetric systems weren't affected. Bug: 120440300 LINK: https://lore.kernel.org/lkml/20200218041620.GD28029@codeaurora.org/ Reported-by: Pavan Kondeti <pkondeti@codeaurora.org> Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Fixes: 804d402fb6f6 ("sched/rt: Make RT capacity-aware") Link: https://lkml.kernel.org/r/20200302132721.8353-3-qais.yousef@arm.com (cherry picked from commit b28bc1e002c23ff8a4999c4a2fb1d4d412bc6f5e https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core) Signed-off-by: Qais Yousef <qais.yousef@arm.com> Change-Id: I670ab7f95a3bd8b4790e1cafe89308ead524367e
Qais Yousef
commited |
27d84b63b0 | |
When searching for the best lowest_mask with a fitness_fn passed, make
sure we record the lowest_level that returns a valid lowest_mask so that
we can use that as a fallback in case we fail to find a fitting CPU at
all levels.
The intention in the original patch was not to allow a down migration to
unfitting CPU. But this missed the case where we are already running on
unfitting one.
With this change now RT tasks can still move between unfitting CPUs when
they're already running on such CPU.
And as Steve suggested; to adhere to the strict priority rules of RT, if
a task is already running on a fitting CPU but due to priority it can't
run on it, allow it to downmigrate to unfitting CPU so it can run.
Bug: 120440300
Reported-by: Pavan Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Fixes: 804d402fb6f6 ("sched/rt: Make RT capacity-aware")
Link: https://lkml.kernel.org/r/20200302132721.8353-2-qais.yousef@arm.com
Link: https://lore.kernel.org/lkml/20200203142712.a7yvlyo2y3le5cpn@e107158-lin/
(cherry picked from commit d9cb236b9429044dc694ea70a50163ddd283cea6
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core)
[Trivial merge conflict]
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Change-Id: I3430e9624f8f7b11d3875c39c5765a51aec4a6f5
Qais Yousef
commited |
ca79ac3cba | |
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAl57BzQACgkQONu9yGCS aT4sXg/9ERHCo0CNoF+KpzfPcH718NEzICFa5pHVE5OJnjGQ+W+AUx4ERkU9gMrk W4N+zAFH+v6D/ejNVUPKVB+XMXeZo+QXVBfLme/N4VlrxaSeA2pMxiRrXVY1UX3/ mb6eShhpBn5q942c8QkzcQJbA1TUKnrqGuqq6rfDQTnjm6OcU/PbPHWqOBVIuOVk Op9VSCcTC41N8sCdsjg411fRBue24+zRU05mw4leeqh0f/XaLjZ9xJyEAuW+6zIz Vu/8c/vzb4j9TPBg0FaEzgDrR7TUwde7F/O9eejY/GWdQngyfPxjOGpKdakrQOOA qRnPv0Fou8hFlKZWFKJhAYcPpTc7KP/y9o1aUsNDrIeA00t9R3nDKng+ewW09hfk K75Znyw6yrWlc5nHotd1pG2NEEeDvSKdXVbyarnaTwqunla9WAdQ0IDFwdaiTklt CfrJ+AJcd5Smnuo+JfljqF4oF88UJSzhI5hp0Zi9w0JROfbPOYFK0JM2DeEOE27J IFm1Z5lvTj4VEJmyLL7CvJSM23yjK5todlG3+zFJt2ZncY2Kw1eHEOIvIwbBtxBp 2AWRkco+hsf+GToJNQopxGYyTjMI3NDy/FocAVIJ8wMSEWZkyS8NkIlgjPjTC2dk ygJ0ZDDiPU0pKouZofQhzGR/Esv/phjWvTLPerFkKIIuiaG+uUo= =1W2f -----END PGP SIGNATURE----- Merge 4.19.113 into android-4.19 Changes in 4.19.113 drm/mediatek: Find the cursor plane instead of hard coding it spi: qup: call spi_qup_pm_resume_runtime before suspending powerpc: Include .BTF section ARM: dts: dra7: Add "dma-ranges" property to PCIe RC DT nodes spi: pxa2xx: Add CS control clock quirk spi/zynqmp: remove entry that causes a cs glitch drm/exynos: dsi: propagate error value and silence meaningless warning drm/exynos: dsi: fix workaround for the legacy clock name drivers/perf: arm_pmu_acpi: Fix incorrect checking of gicc pointer altera-stapl: altera_get_note: prevent write beyond end of 'key' dm bio record: save/restore bi_end_io and bi_integrity dm integrity: use dm_bio_record and dm_bio_restore riscv: avoid the PIC offset of static percpu data in module beyond 2G limits drm/amd/display: Clear link settings on MST disable connector drm/amd/display: fix dcc swath size calculations on dcn1 xenbus: req->body should be updated before req->state xenbus: req->err should be updated before req->state block, bfq: fix overwrite of bfq_group pointer in bfq_find_set_group() parse-maintainers: Mark as executable USB: Disable LPM on WD19's Realtek Hub usb: quirks: add NO_LPM quirk for RTL8153 based ethernet adapters USB: serial: option: add ME910G1 ECM composition 0x110b usb: host: xhci-plat: add a shutdown USB: serial: pl2303: add device-id for HP LD381 usb: xhci: apply XHCI_SUSPEND_DELAY to AMD XHCI controller 1022:145c ALSA: line6: Fix endless MIDI read loop ALSA: seq: virmidi: Fix running status after receiving sysex ALSA: seq: oss: Fix running status after receiving sysex ALSA: pcm: oss: Avoid plugin buffer overflow ALSA: pcm: oss: Remove WARNING from snd_pcm_plug_alloc() checks iio: st_sensors: remap SMO8840 to LIS2DH12 iio: trigger: stm32-timer: disable master mode when stopping iio: magnetometer: ak8974: Fix negative raw values in sysfs iio: adc: at91-sama5d2_adc: fix differential channels in triggered mode mmc: rtsx_pci: Fix support for speed-modes that relies on tuning mmc: sdhci-of-at91: fix cd-gpios for SAMA5D2 staging: rtl8188eu: Add device id for MERCUSYS MW150US v2 staging: greybus: loopback_test: fix poll-mask build breakage staging/speakup: fix get_word non-space look-ahead intel_th: Fix user-visible error codes intel_th: pci: Add Elkhart Lake CPU support rtc: max8907: add missing select REGMAP_IRQ xhci: Do not open code __print_symbolic() in xhci trace events btrfs: fix log context list corruption after rename whiteout error drm/amd/amdgpu: Fix GPR read from debugfs (v2) drm/lease: fix WARNING in idr_destroy memcg: fix NULL pointer dereference in __mem_cgroup_usage_unregister_event mm: slub: be more careful about the double cmpxchg of freelist mm, slub: prevent kmalloc_node crashes and memory leaks page-flags: fix a crash at SetPageError(THP_SWAP) x86/mm: split vmalloc_sync_all() USB: cdc-acm: fix close_delay and closing_wait units in TIOCSSERIAL USB: cdc-acm: fix rounding error in TIOCSSERIAL iio: light: vcnl4000: update sampling periods for vcnl4200 kbuild: Disable -Wpointer-to-enum-cast futex: Fix inode life-time issue futex: Unbreak futex hashing Revert "vrf: mark skb for multicast or link-local as enslaved to VRF" Revert "ipv6: Fix handling of LLA with VRF and sockets bound to VRF" ALSA: hda/realtek: Fix pop noise on ALC225 arm64: smp: fix smp_send_stop() behaviour arm64: smp: fix crash_smp_send_stop() behaviour drm/bridge: dw-hdmi: fix AVI frame colorimetry staging: greybus: loopback_test: fix potential path truncation staging: greybus: loopback_test: fix potential path truncations Linux 4.19.113 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I90c48cd7189a964e59d199ecc0f32c0a68688ec5
Greg Kroah-Hartman
commited |
248555d63c | |
commit 8d67743653dce5a0e7aa500fcccb237cde7ad88e upstream.
The recent futex inode life time fix changed the ordering of the futex key
union struct members, but forgot to adjust the hash function accordingly,
As a result the hashing omits the leading 64bit and even hashes beyond the
futex key causing a bad hash distribution which led to a ~100% performance
regression.
Hand in the futex key pointer instead of a random struct member and make
the size calculation based of the struct offset.
Fixes: 8019ad13ef7f ("futex: Fix inode life-time issue")
Reported-by: Rong Chen <rong.a.chen@intel.com>
Decoded-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Rong Chen <rong.a.chen@intel.com>
Link: https://lkml.kernel.org/r/87h7yy90ve.fsf@nanos.tec.linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Gleixner
authored and
Greg Kroah-Hartman
commited |
17a8ca79a5 | |
commit 8019ad13ef7f64be44d4f892af9c840179009254 upstream. As reported by Jann, ihold() does not in fact guarantee inode persistence. And instead of making it so, replace the usage of inode pointers with a per boot, machine wide, unique inode identifier. This sequence number is global, but shared (file backed) futexes are rare enough that this should not become a performance issue. Reported-by: Jann Horn <jannh@google.com> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Peter Zijlstra
authored and
Greg Kroah-Hartman
commited |
e6d506cd22 | |
commit 763802b53a427ed3cbd419dbba255c414fdd9e7c upstream.
Commit 3f8fd02b1bf1 ("mm/vmalloc: Sync unmappings in
__purge_vmap_area_lazy()") introduced a call to vmalloc_sync_all() in
the vunmap() code-path. While this change was necessary to maintain
correctness on x86-32-pae kernels, it also adds additional cycles for
architectures that don't need it.
Specifically on x86-64 with CONFIG_VMAP_STACK=y some people reported
severe performance regressions in micro-benchmarks because it now also
calls the x86-64 implementation of vmalloc_sync_all() on vunmap(). But
the vmalloc_sync_all() implementation on x86-64 is only needed for newly
created mappings.
To avoid the unnecessary work on x86-64 and to gain the performance
back, split up vmalloc_sync_all() into two functions:
* vmalloc_sync_mappings(), and
* vmalloc_sync_unmappings()
Most call-sites to vmalloc_sync_all() only care about new mappings being
synchronized. The only exception is the new call-site added in the
above mentioned commit.
Shile Zhang directed us to a report of an 80% regression in reaim
throughput.
Fixes: 3f8fd02b1bf1 ("mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()")
Reported-by: kernel test robot <oliver.sang@intel.com>
Reported-by: Shile Zhang <shile.zhang@linux.alibaba.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Borislav Petkov <bp@suse.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [GHES]
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20191009124418.8286-1-joro@8bytes.org
Link: https://lists.01.org/hyperkitty/list/lkp@lists.01.org/thread/4D3JPPHBNOSPFK2KEPC6KGKS6J25AIDB/
Link: http://lkml.kernel.org/r/20191113095530.228959-1-shile.zhang@linux.alibaba.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Joerg Roedel
authored and
Greg Kroah-Hartman
commited |
6c1051ffc7 | |
Add get_next_event_cpu to get the next wakeup time for the CPU. This is used by the sleep driver if it has to query the next wakeup for a CPU other than the thread that its running on. Test: make Bug: 150895657 Signed-off-by: Mahesh Sivasubramanian <msivasub@codeaurora.org> Change-Id: I0f0347f9648932a55cb64c630694d0a2e290b633 (cherry picked from commit e948653a6a5cb055b5ed692d52817e52f02a1bb1) [hridya: also added an EXPORT_SYMBOL_GPL(get_next_event_cpu) to make the symbol available to kernel modules.] Signed-off-by: Hridya Valsaraju <hridya@google.com> 
Mahesh Sivasubramanian
authored and
 Hridya Valsaraju
commited |
db6999554d | |
Trying to initialize a structure with "= {};" will not always clean out
all padding locations in a structure. So be explicit and call memset to
initialize everything for a number of bpf information structures that
are then copied from userspace, sometimes from smaller memory locations
than the size of the structure.
Reported-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20200320162258.GA794295@kroah.com
(cherry picked from commit 269efb7fc478563a7e7b22590d8076823f4ac82a)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I52a2cab20aa310085ec104bd811ac4f2b83657b6
Greg Kroah-Hartman
commited |
cb57b8b85f | |
For the bpf syscall, we are relying on the compiler to properly zero out the bpf_attr union that we copy userspace data into. Unfortunately that doesn't always work properly, padding and other oddities might not be correctly zeroed, and in some tests odd things have been found when the stack is pre-initialized to other values. Fix this by explicitly memsetting the structure to 0 before using it. Reported-by: Maciej Żenczykowski <maze@google.com> Reported-by: John Stultz <john.stultz@linaro.org> Reported-by: Alexander Potapenko <glider@google.com> Reported-by: Alistair Delva <adelva@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://android-review.googlesource.com/c/kernel/common/+/1235490 Link: https://lore.kernel.org/bpf/20200320094813.GA421650@kroah.com (cherry picked from commit 8096f229421f7b22433775e928d506f0342e5907) Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I2dc28cd45024da5cc6861ff4a9b25fae389cc6d8
Greg Kroah-Hartman
commited |
de2b205fa7 | |
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Greg Kroah-Hartman
commited |
417d28a44d | |
[ Upstream commit fda31c50292a5062332fa0343c084bd9f46604d9 ] When queueing a signal, we increment both the users count of pending signals (for RLIMIT_SIGPENDING tracking) and we increment the refcount of the user struct itself (because we keep a reference to the user in the signal structure in order to correctly account for it when freeing). That turns out to be fairly expensive, because both of them are atomic updates, and particularly under extreme signal handling pressure on big machines, you can get a lot of cache contention on the user struct. That can then cause horrid cacheline ping-pong when you do these multiple accesses. So change the reference counting to only pin the user for the _first_ pending signal, and to unpin it when the last pending signal is dequeued. That means that when a user sees a lot of concurrent signal queuing - which is the only situation when this matters - the only atomic access needed is generally the 'sigpending' count update. This was noticed because of a particularly odd timing artifact on a dual-socket 96C/192T Cascade Lake platform: when you get into bad contention, on that machine for some reason seems to be much worse when the contention happens in the upper 32-byte half of the cacheline. As a result, the kernel test robot will-it-scale 'signal1' benchmark had an odd performance regression simply due to random alignment of the 'struct user_struct' (and pointed to a completely unrelated and apparently nonsensical commit for the regression). Avoiding the double increments (and decrements on the dequeueing side, of course) makes for much less contention and hugely improved performance on that will-it-scale microbenchmark. Quoting Feng Tang: "It makes a big difference, that the performance score is tripled! bump from original 17000 to 54000. Also the gap between 5.0-rc6 and 5.0-rc6+Jiri's patch is reduced to around 2%" [ The "2% gap" is the odd cacheline placement difference on that platform: under the extreme contention case, the effect of which half of the cacheline was hot was 5%, so with the reduced contention the odd timing artifact is reduced too ] It does help in the non-contended case too, but is not nearly as noticeable. Reported-and-tested-by: Feng Tang <feng.tang@intel.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Huang, Ying <ying.huang@intel.com> Cc: Philip Li <philip.li@intel.com> Cc: Andi Kleen <andi.kleen@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
Linus Torvalds
authored and
Greg Kroah-Hartman
commited |
797479da0a | |
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAl5xvNEACgkQONu9yGCS aT6VUg//SJSSC5IX7gulaIm8IzvVijE7EKkdkjukJ4TD672J1QqzXVlhKp8tSvAV ZBknOar0AP5sDNtvF3cgz0t6w6IJHrLWGyWqcMfUTC75M9HVZH6YUgHDkPmi0g8f dyTrVe20/lC5yBNAFmS0pnYB+UfL8biJEF6N++pULZQhOY0eRr6BMKdl2npxH7D3 YL/jipdGHmwkr/OgOtRaOBgEP6HIu1xKnZUkGzvhF0BOxAM/ib/5lQognOD6x4Hm 9vHzc8+nBXlWj6N7XkE+I3RiZumUx+vEr2kLljdrTE7cH7ALzJQl4GQ6Db6lbd0E q78Y44FhrfKiwxDeGPHKOX39sgzVwCsKhwTg3a4Rq4Aq0I7QQoPikAyCUj9kaeFq q8bI0Wub+4nQhzuyv6UgRWaQnIBZxXe56M8z3u4CTy6ljwvn4hXeZ9bkVRyXdQtS D4h3WtxFwBed0tQGb5ypv83Wg/lwK8bQHab4LDV9AZNZ3Jrbg70ldlea0GiA8Csc Y3MncS6zF9mnAU8ZdsYT3GNkRQS3OTFNeb7+V5MRgdCnG3xk5GltHTy0JYhZKmXH 8zMXlUgUeyihFx6f7LwFhYk8NTSg3+W700SKND/zd+VK8m7mqT7PB1bkny5zJ6aC teehBWmHlxZlL1ENXya8lUEEsOieAWxi3IMlhOEo2roidPW1N0o= =ryZW -----END PGP SIGNATURE----- Merge 4.19.111 into android-4.19 Changes in 4.19.111 phy: Revert toggling reset changes. net: phy: Avoid multiple suspends cgroup, netclassid: periodically release file_lock on classid updating gre: fix uninit-value in __iptunnel_pull_header inet_diag: return classid for all socket types ipv6/addrconf: call ipv6_mc_up() for non-Ethernet interface ipvlan: add cond_resched_rcu() while processing muticast backlog ipvlan: do not add hardware address of master to its unicast filter list ipvlan: do not use cond_resched_rcu() in ipvlan_process_multicast() ipvlan: don't deref eth hdr before checking it's set net/ipv6: use configured metric when add peer route netlink: Use netlink header as base to calculate bad attribute offset net: macsec: update SCI upon MAC address change. net: nfc: fix bounds checking bugs on "pipe" net/packet: tpacket_rcv: do not increment ring index on drop net: stmmac: dwmac1000: Disable ACS if enhanced descs are not used net: systemport: fix index check to avoid an array out of bounds access r8152: check disconnect status after long sleep sfc: detach from cb_page in efx_copy_channel() bnxt_en: reinitialize IRQs when MTU is modified cgroup: memcg: net: do not associate sock with unrelated cgroup net: memcg: late association of sock to memcg net: memcg: fix lockdep splat in inet_csk_accept() devlink: validate length of param values fib: add missing attribute validation for tun_id nl802154: add missing attribute validation nl802154: add missing attribute validation for dev_type can: add missing attribute validation for termination macsec: add missing attribute validation for port net: fq: add missing attribute validation for orphan mask team: add missing attribute validation for port ifindex team: add missing attribute validation for array index nfc: add missing attribute validation for SE API nfc: add missing attribute validation for deactivate target nfc: add missing attribute validation for vendor subcommand net: phy: fix MDIO bus PM PHY resuming selftests/net/fib_tests: update addr_metric_test for peer route testing net/ipv6: need update peer route when modify metric net/ipv6: remove the old peer route if change it to a new one tipc: add missing attribute validation for MTU property devlink: validate length of region addr/len bonding/alb: make sure arp header is pulled before accessing it slip: make slhc_compress() more robust against malicious packets net: fec: validate the new settings in fec_enet_set_coalesce() macvlan: add cond_resched() during multicast processing cgroup: cgroup_procs_next should increase position index cgroup: Iterate tasks that did not finish do_exit() iwlwifi: mvm: Do not require PHY_SKU NVM section for 3168 devices virtio-blk: fix hw_queue stopped on arbitrary error iommu/vt-d: quirk_ioat_snb_local_iommu: replace WARN_TAINT with pr_warn + add_taint netfilter: nf_conntrack: ct_cpu_seq_next should increase position index netfilter: synproxy: synproxy_cpu_seq_next should increase position index netfilter: xt_recent: recent_seq_next should increase position index netfilter: x_tables: xt_mttg_seq_next should increase position index workqueue: don't use wq_select_unbound_cpu() for bound works drm/amd/display: remove duplicated assignment to grph_obj_type ktest: Add timeout for ssh sync testing cifs_atomic_open(): fix double-put on late allocation failure gfs2_atomic_open(): fix O_EXCL|O_CREAT handling on cold dcache KVM: x86: clear stale x86_emulate_ctxt->intercept value ARC: define __ALIGN_STR and __ALIGN symbols for ARC macintosh: windfarm: fix MODINFO regression efi: Fix a race and a buffer overflow while reading efivars via sysfs efi: Make efi_rts_work accessible to efi page fault handler mt76: fix array overflow on receiving too many fragments for a packet x86/mce: Fix logic and comments around MSR_PPIN_CTL iommu/dma: Fix MSI reservation allocation iommu/vt-d: dmar: replace WARN_TAINT with pr_warn + add_taint iommu/vt-d: Fix a bug in intel_iommu_iova_to_phys() for huge page batman-adv: Don't schedule OGM for disabled interface pinctrl: meson-gxl: fix GPIOX sdio pins pinctrl: core: Remove extra kref_get which blocks hogs being freed drm/i915/gvt: Fix unnecessary schedule timer when no vGPU exits i2c: gpio: suppress error on probe defer nl80211: add missing attribute validation for critical protocol indication nl80211: add missing attribute validation for beacon report scanning nl80211: add missing attribute validation for channel switch perf bench futex-wake: Restore thread count default to online CPU count netfilter: cthelper: add missing attribute validation for cthelper netfilter: nft_payload: add missing attribute validation for payload csum flags netfilter: nft_tunnel: add missing attribute validation for tunnels iommu/vt-d: Fix the wrong printing in RHSA parsing iommu/vt-d: Ignore devices with out-of-spec domain number i2c: acpi: put device when verifying client fails ipv6: restrict IPV6_ADDRFORM operation net/smc: check for valid ib_client_data net/smc: cancel event worker during device removal efi: Add a sanity check to efivar_store_raw() batman-adv: Avoid free/alloc race when handling OGM2 buffer Linux 4.19.111 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ide220f0b6a12d291bda4a83f17cde25bbe64e2ff
Greg Kroah-Hartman
commited |
bfe2901c20 | |
commit aa202f1f56960c60e7befaa0f49c72b8fa11b0a8 upstream.
wq_select_unbound_cpu() is designed for unbound workqueues only, but
it's wrongly called when using a bound workqueue too.
Fixing this ensures work queued to a bound workqueue with
cpu=WORK_CPU_UNBOUND always runs on the local CPU.
Before, that would happen only if wq_unbound_cpumask happened to include
it (likely almost always the case), or was empty, or we got lucky with
forced round-robin placement. So restricting
/sys/devices/virtual/workqueue/cpumask to a small subset of a machine's
CPUs would cause some bound work items to run unexpectedly there.
Fixes:
Hillf Danton
authored and
Greg Kroah-Hartman
commited |
3cd2a91a88 | |
commit 9c974c77246460fa6a92c18554c3311c8c83c160 upstream.
PF_EXITING is set earlier than actual removal from css_set when a task
is exitting. This can confuse cgroup.procs readers who see no PF_EXITING
tasks, however, rmdir is checking against css_set membership so it can
transitionally fail with EBUSY.
Fix this by listing tasks that weren't unlinked from css_set active
lists.
It may happen that other users of the task iterator (without
CSS_TASK_ITER_PROCS) spot a PF_EXITING task before cgroup_exit(). This
is equal to the state before commit c03cd7738a83 ("cgroup: Include dying
leaders with live threads in PROCS iterations") but it may be reviewed
later.
Reported-by: Suren Baghdasaryan <surenb@google.com>
Fixes: c03cd7738a83 ("cgroup: Include dying leaders with live threads in PROCS iterations")
Signed-off-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Michal Koutný
authored and
Greg Kroah-Hartman
commited |
ab3e3b23d8 | |
commit 2d4ecb030dcc90fb725ecbfc82ce5d6c37906e0e upstream. If seq_file .next fuction does not change position index, read after some lseek can generate unexpected output: 1) dd bs=1 skip output of each 2nd elements $ dd if=/sys/fs/cgroup/cgroup.procs bs=8 count=1 2 3 4 5 1+0 records in 1+0 records out 8 bytes copied, 0,000267297 s, 29,9 kB/s [test@localhost ~]$ dd if=/sys/fs/cgroup/cgroup.procs bs=1 count=8 2 4 <<< NB! 3 was skipped 6 <<< ... and 5 too 8 <<< ... and 7 8+0 records in 8+0 records out 8 bytes copied, 5,2123e-05 s, 153 kB/s This happen because __cgroup_procs_start() makes an extra extra cgroup_procs_next() call 2) read after lseek beyond end of file generates whole last line. 3) read after lseek into middle of last line generates expected rest of last line and unexpected whole line once again. Additionally patch removes an extra position index changes in __cgroup_procs_start() Cc: stable@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vasily Averin
authored and
Greg Kroah-Hartman
commited |
ff79a4a75c | |
[ Upstream commit e876ecc67db80dfdb8e237f71e5b43bb88ae549c ] We are testing network memory accounting in our setup and noticed inconsistent network memory usage and often unrelated cgroups network usage correlates with testing workload. On further inspection, it seems like mem_cgroup_sk_alloc() and cgroup_sk_alloc() are broken in irq context specially for cgroup v1. mem_cgroup_sk_alloc() and cgroup_sk_alloc() can be called in irq context and kind of assumes that this can only happen from sk_clone_lock() and the source sock object has already associated cgroup. However in cgroup v1, where network memory accounting is opt-in, the source sock can be unassociated with any cgroup and the new cloned sock can get associated with unrelated interrupted cgroup. Cgroup v2 can also suffer if the source sock object was created by process in the root cgroup or if sk_alloc() is called in irq context. The fix is to just do nothing in interrupt. WARNING: Please note that about half of the TCP sockets are allocated from the IRQ context, so, memory used by such sockets will not be accouted by the memcg. The stack trace of mem_cgroup_sk_alloc() from IRQ-context: CPU: 70 PID: 12720 Comm: ssh Tainted: 5.6.0-smp-DEV #1 Hardware name: ... Call Trace: <IRQ> dump_stack+0x57/0x75 mem_cgroup_sk_alloc+0xe9/0xf0 sk_clone_lock+0x2a7/0x420 inet_csk_clone_lock+0x1b/0x110 tcp_create_openreq_child+0x23/0x3b0 tcp_v6_syn_recv_sock+0x88/0x730 tcp_check_req+0x429/0x560 tcp_v6_rcv+0x72d/0xa40 ip6_protocol_deliver_rcu+0xc9/0x400 ip6_input+0x44/0xd0 ? ip6_protocol_deliver_rcu+0x400/0x400 ip6_rcv_finish+0x71/0x80 ipv6_rcv+0x5b/0xe0 ? ip6_sublist_rcv+0x2e0/0x2e0 process_backlog+0x108/0x1e0 net_rx_action+0x26b/0x460 __do_softirq+0x104/0x2a6 do_softirq_own_stack+0x2a/0x40 </IRQ> do_softirq.part.19+0x40/0x50 __local_bh_enable_ip+0x51/0x60 ip6_finish_output2+0x23d/0x520 ? ip6table_mangle_hook+0x55/0x160 __ip6_finish_output+0xa1/0x100 ip6_finish_output+0x30/0xd0 ip6_output+0x73/0x120 ? __ip6_finish_output+0x100/0x100 ip6_xmit+0x2e3/0x600 ? ipv6_anycast_cleanup+0x50/0x50 ? inet6_csk_route_socket+0x136/0x1e0 ? skb_free_head+0x1e/0x30 inet6_csk_xmit+0x95/0xf0 __tcp_transmit_skb+0x5b4/0xb20 __tcp_send_ack.part.60+0xa3/0x110 tcp_send_ack+0x1d/0x20 tcp_rcv_state_process+0xe64/0xe80 ? tcp_v6_connect+0x5d1/0x5f0 tcp_v6_do_rcv+0x1b1/0x3f0 ? tcp_v6_do_rcv+0x1b1/0x3f0 __release_sock+0x7f/0xd0 release_sock+0x30/0xa0 __inet_stream_connect+0x1c3/0x3b0 ? prepare_to_wait+0xb0/0xb0 inet_stream_connect+0x3b/0x60 __sys_connect+0x101/0x120 ? __sys_getsockopt+0x11b/0x140 __x64_sys_connect+0x1a/0x20 do_syscall_64+0x51/0x200 entry_SYSCALL_64_after_hwframe+0x44/0xa9 The stack trace of mem_cgroup_sk_alloc() from IRQ-context: Fixes: 
Shakeel Butt
authored and
Greg Kroah-Hartman
commited |
941464dcbc | |
PF_EXITING is set earlier than actual removal from css_set when a task
is exitting. This can confuse cgroup.procs readers who see no PF_EXITING
tasks, however, rmdir is checking against css_set membership so it can
transitionally fail with EBUSY.
Fix this by listing tasks that weren't unlinked from css_set active
lists.
It may happen that other users of the task iterator (without
CSS_TASK_ITER_PROCS) spot a PF_EXITING task before cgroup_exit(). This
is equal to the state before commit c03cd7738a83 ("cgroup: Include dying
leaders with live threads in PROCS iterations") but it may be reviewed
later.
Reported-by: Suren Baghdasaryan <surenb@google.com>
Fixes: c03cd7738a83 ("cgroup: Include dying leaders with live threads in PROCS iterations")
Signed-off-by: Michal Koutný <mkoutny@suse.com>
(cherry picked from commit 9c974c77246460fa6a92c18554c3311c8c83c160)
Bug: 141213848
Bug: 146758430
Test: test_cgcore_destroy from linux-kselftest
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: Iac57661b931129ed1e44b89675f8115bb89084ff
(cherry picked from commit 21ee296526c70d6dc3c64639406f156f39b80fd0)
Michal Koutný
authored and
Suren Baghdasaryan
commited |
6f2a9a3536 | |
The current DMA coherent pool assumes that there is a kernel mapping at all times for the entire pool. This may not be what we want for the entire times. Add the dma_removed ops to support this use case. Bug: 145617272 Signed-off-by: Laura Abbott <lauraa@codeaurora.org> Signed-off-by: Patrick Daly <pdaly@codeaurora.org> Signed-off-by: Liam Mark <lmark@codeaurora.org> Signed-off-by: Swathi Sridhar <swatsrid@codeaurora.org> [surenb Squashed the following commits: a478a8bf78ad "drivers: Add dma removed ops" 8510985ae320 "dma: removed: Merge dma removed changes from 4.14" and removed-dma-pool driver changes from 9d4b7d641556 "iommu: arm-smmu: Merge for ..."] Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: Ie4f1e9bdf57b79699fa8fa7e7a6087e6d88ebbfa 
Laura Abbott
authored and
Suren Baghdasaryan
commited |
c9a574054d | |
kallsyms_lookup_name() and kallsyms_on_each_symbol() are exported to modules despite having no in-tree users and being wide open to abuse by out-of-tree modules that can use them as a method to invoke arbitrary non-exported kernel functions. Unexport kallsyms_lookup_name() and kallsyms_on_each_symbol(). Bug: 149978696 Change-Id: I8f3c1b5222939c46901f4d149d4c7bb63916ff04 Link: http://lkml.kernel.org/r/20200221114404.14641-4-will@kernel.org Signed-off-by: Will Deacon <will@kernel.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Alexei Starovoitov <ast@kernel.org> Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Quentin Perret <qperret@google.com> Cc: Frederic Weisbecker <frederic@kernel.org> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Miroslav Benes <mbenes@suse.cz> Cc: Petr Mladek <pmladek@suse.com> Cc: Joe Lawrence <joe.lawrence@redhat.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> (cherry picked from commit ab3e66797c7fddbf80fbba31c5bf4574ad52f320 https://github.com/hnaz/linux-mm.git master) Signed-off-by: Quentin Perret <qperret@google.com> 
Will Deacon
authored and
 Quentin Perret
commited |
8e37367a32 | |
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Merge 4.19.109 into android-4.19
Changes in 4.19.109
EDAC/amd64: Set grain per DIMM
ALSA: hda/realtek - Fix a regression for mute led on Lenovo Carbon X1
net: dsa: bcm_sf2: Forcibly configure IMP port for 1Gb/sec
RDMA/core: Fix pkey and port assignment in get_new_pps
RDMA/core: Fix use of logical OR in get_new_pps
kprobes: Fix optimize_kprobe()/unoptimize_kprobe() cancellation logic
ALSA: hda: do not override bus codec_mask in link_get()
serial: ar933x_uart: set UART_CS_{RX,TX}_READY_ORIDE
selftests: fix too long argument
usb: gadget: composite: Support more than 500mA MaxPower
usb: gadget: ffs: ffs_aio_cancel(): Save/restore IRQ flags
usb: gadget: serial: fix Tx stall after buffer overflow
drm/msm/mdp5: rate limit pp done timeout warnings
drm: msm: Fix return type of dsi_mgr_connector_mode_valid for kCFI
scsi: megaraid_sas: silence a warning
drm/msm/dsi: save pll state before dsi host is powered off
drm/msm/dsi/pll: call vco set rate explicitly
selftests: forwarding: use proto icmp for {gretap, ip6gretap}_mac testing
net: dsa: b53: Ensure the default VID is untagged
net: ks8851-ml: Remove 8-bit bus accessors
net: ks8851-ml: Fix 16-bit data access
net: ks8851-ml: Fix 16-bit IO operation
watchdog: da9062: do not ping the hw during stop()
s390/cio: cio_ignore_proc_seq_next should increase position index
s390: make 'install' not depend on vmlinux
x86/boot/compressed: Don't declare __force_order in kaslr_64.c
s390/qdio: fill SL with absolute addresses
nvme: Fix uninitialized-variable warning
ice: Don't tell the OS that link is going down
x86/xen: Distribute switch variables for initialization
net: thunderx: workaround BGX TX Underflow issue
ALSA: hda/realtek - Add Headset Mic supported
ALSA: hda/realtek - Fix silent output on Gigabyte X570 Aorus Master
cifs: don't leak -EAGAIN for stat() during reconnect
usb: storage: Add quirk for Samsung Fit flash
usb: quirks: add NO_LPM quirk for Logitech Screen Share
usb: dwc3: gadget: Update chain bit correctly when using sg list
usb: core: hub: fix unhandled return by employing a void function
usb: core: hub: do error out if usb_autopm_get_interface() fails
usb: core: port: do error out if usb_autopm_get_interface() fails
vgacon: Fix a UAF in vgacon_invert_region
mm, numa: fix bad pmd by atomically check for pmd_trans_huge when marking page tables prot_numa
mm: fix possible PMD dirty bit lost in set_pmd_migration_entry()
fat: fix uninit-memory access for partial initialized inode
arm: dts: dra76x: Fix mmc3 max-frequency
tty:serial:mvebu-uart:fix a wrong return
serial: 8250_exar: add support for ACCES cards
vt: selection, close sel_buffer race
vt: selection, push console lock down
vt: selection, push sel_lock up
media: v4l2-mem2mem.c: fix broken links
x86/pkeys: Manually set X86_FEATURE_OSPKE to preserve existing changes
dmaengine: tegra-apb: Fix use-after-free
dmaengine: tegra-apb: Prevent race conditions of tasklet vs free list
dm cache: fix a crash due to incorrect work item cancelling
dm: report suspended device during destroy
dm writecache: verify watermark during resume
ARM: dts: ls1021a: Restore MDIO compatible to gianfar
spi: bcm63xx-hsspi: Really keep pll clk enabled
ASoC: topology: Fix memleak in soc_tplg_link_elems_load()
ASoC: topology: Fix memleak in soc_tplg_manifest_load()
ASoC: intel: skl: Fix pin debug prints
ASoC: intel: skl: Fix possible buffer overflow in debug outputs
dmaengine: imx-sdma: remove dma_slave_config direction usage and leave sdma_event_enable()
ASoC: pcm: Fix possible buffer overflow in dpcm state sysfs output
ASoC: pcm512x: Fix unbalanced regulator enable call in probe error path
ASoC: dapm: Correct DAPM handling of active widgets during shutdown
drm/sun4i: Fix DE2 VI layer format support
drm/sun4i: de2/de3: Remove unsupported VI layer formats
phy: mapphone-mdm6600: Fix timeouts by adding wake-up handling
phy: mapphone-mdm6600: Fix write timeouts with shorter GPIO toggle interval
ARM: dts: imx6: phycore-som: fix emmc supply
RDMA/iwcm: Fix iwcm work deallocation
RMDA/cm: Fix missing ib_cm_destroy_id() in ib_cm_insert_listen()
IB/hfi1, qib: Ensure RCU is locked when accessing list
ARM: imx: build v7_cpu_resume() unconditionally
ARM: dts: am437x-idk-evm: Fix incorrect OPP node names
ARM: dts: imx7-colibri: Fix frequency for sd/mmc
hwmon: (adt7462) Fix an error return in ADT7462_REG_VOLT()
dmaengine: coh901318: Fix a double lock bug in dma_tc_handle()
powerpc: fix hardware PMU exception bug on PowerVM compatibility mode systems
efi/x86: Align GUIDs to their size in the mixed mode runtime wrapper
efi/x86: Handle by-ref arguments covering multiple pages in mixed mode
dm integrity: fix a deadlock due to offloading to an incorrect workqueue
scsi: pm80xx: Fixed kernel panic during error recovery for SATA drive
Linux 4.19.109
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Iae5cc72b8c7c96b0a15c76657b9c3bcc4341a7aa
Greg Kroah-Hartman
commited |
ca0a95ff50 | |
[ Upstream commit e4add247789e4ba5e08ad8256183ce2e211877d4 ]
optimize_kprobe() and unoptimize_kprobe() cancels if a given kprobe
is on the optimizing_list or unoptimizing_list already. However, since
the following commit:
f66c0447cca1 ("kprobes: Set unoptimized flag after unoptimizing code")
modified the update timing of the KPROBE_FLAG_OPTIMIZED, it doesn't
work as expected anymore.
The optimized_kprobe could be in the following states:
- [optimizing]: Before inserting jump instruction
op.kp->flags has KPROBE_FLAG_OPTIMIZED and
op->list is not empty.
- [optimized]: jump inserted
op.kp->flags has KPROBE_FLAG_OPTIMIZED and
op->list is empty.
- [unoptimizing]: Before removing jump instruction (including unused
optprobe)
op.kp->flags has KPROBE_FLAG_OPTIMIZED and
op->list is not empty.
- [unoptimized]: jump removed
op.kp->flags doesn't have KPROBE_FLAG_OPTIMIZED and
op->list is empty.
Current code mis-expects [unoptimizing] state doesn't have
KPROBE_FLAG_OPTIMIZED, and that can cause incorrect results.
To fix this, introduce optprobe_queued_unopt() to distinguish [optimizing]
and [unoptimizing] states and fixes the logic in optimize_kprobe() and
unoptimize_kprobe().
[ mingo: Cleaned up the changelog and the code a bit. ]
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bristot@redhat.com
Fixes: f66c0447cca1 ("kprobes: Set unoptimized flag after unoptimizing code")
Link: https://lkml.kernel.org/r/157840814418.7181.13478003006386303481.stgit@devnote2
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Masami Hiramatsu
authored and
Greg Kroah-Hartman
commited |
38d3707340 | |
We want to allow compiling irqchip drivers as modules. So export the necessary symbols. Bug: 148105066 Change-Id: Id3de4b8451bed1af9b0afeb5863493697730acb6 Signed-off-by: Saravana Kannan <saravanak@google.com> Signed-off-by: Will McVicker <willmcvicker@google.com> (cherry picked from commit cfc69e9b2fe82a46addfcb1912bd642456548baa)
Saravana Kannan
authored and
 Will McVicker
commited |
ebb43b6aeb | |
These symbols are needed for modularizing pinctrl. Signed-off-by: Will McVicker <willmcvicker@google.com> Bug: 145771121 Test: compile, boot Change-Id: I8693c3a41b5fcab05b8e4a8a82f4057205bafd3b (cherry picked from commit 9d2cbb36a60747e885f77d776a3ec2bf7523e2e6)
Will McVicker
commited |
e0bd5f70e2 | |
On certain QTI chipsets some GPIOs are direct-connect interrupts to the GIC. Even when GPIOs are not used for interrupt generation and interrupt line is disabled, it does not prevent interrupt to get pending at GIC_ISPEND. When drivers call enable_irq unwanted interrupt occures. Introduce irq_chip_get/set_parent_state calls to clear pending irq which can get called within irq_enable of child irq chip to clear any pending irq before enabling. Signed-off-by: Maulik Shah <mkshah@codeaurora.org> Bug: 150233439 Change-Id: Ie8559657bd8da926cc741514809ffe9adbd73a80 Signed-off-by: Will McVicker <willmcvicker@google.com> (cherry picked from commit d9233146224bdeec6a8a4cc684bec303e38fb9af) 
Maulik Shah
authored and
Will McVicker
commited |
657d3fdc70 | |
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAl5hHeEACgkQONu9yGCS aT7uFQ/+KcS1brUUid3C+zewoJ7vvB7wspMRogdJk5/9Y/ty4uxolFRNxM7Fq2Sj 2Uq0jyt8TiiOQBguqpRfJN/GqPX7HBLPR6e9B4Pq67BR34VT6azqb5F7tKjhCa4I CGmA5XvCCQSGwqmwyP4biV0yOdN6Fy0B/9q7+7RSOsY/Mr86RyEHQgarRxaMy2QW v/dh/yIsdPXG27ZicETudKqIWaMiXL5k0zXr81HY4TcOzBrKW66nuqcI0uXZ6r54 RwqxfGVTGQeGIN4bBAFGTlEvvMDO0NAENGA0vOpt8Mqf7yRIye78GCmn8A/nOgd/ +ZsrS9y+baJun0O/7zmuYSFd37GDecRu6kNYI+fc1Hbf784wLj05A52kNZ5ndYPB CdHgcow63QV3DGTXsfQOi/yZEDm/YMUzhMoL2/KP/LlJzq8raXMf95pB3fgs6zmX HI3sA4AuyWQaQb/ogzW+8m8v1oHzT4+aNaBi9rBS1uqCg5q6AhTBRApUNpbybgsG vkiTwhIc2y74Y7M5wV0Fp29pQBPPn033smIq3V/qxgyMvoBbMXxNGZ7jTK882h5g UBjprtX/wyHgVLEXITiz1BPJTinweJarRCL6iGn5w7IOfd3enSamfph5wh5vuXR6 ea0SCw3Dni5G930BMldxubZRtiYTiqvDCeC/IpG7trP9mpczGeE= =/2bv -----END PGP SIGNATURE----- Merge 4.19.108 into android-4.19 Changes in 4.19.108 irqchip/gic-v3-its: Fix misuse of GENMASK macro iwlwifi: pcie: fix rb_allocator workqueue allocation ipmi:ssif: Handle a possible NULL pointer reference drm/msm: Set dma maximum segment size for mdss dax: pass NOWAIT flag to iomap_apply mac80211: consider more elements in parsing CRC cfg80211: check wiphy driver existence for drvinfo report s390/zcrypt: fix card and queue total counter wrap qmi_wwan: re-add DW5821e pre-production variant qmi_wwan: unconditionally reject 2 ep interfaces ARM: dts: sti: fixup sound frame-inversion for stihxxx-b2120.dtsi soc/tegra: fuse: Fix build with Tegra194 configuration net: ena: fix potential crash when rxfh key is NULL net: ena: fix uses of round_jiffies() net: ena: add missing ethtool TX timestamping indication net: ena: fix incorrect default RSS key net: ena: rss: fix failure to get indirection table net: ena: rss: store hash function as values and not bits net: ena: fix incorrectly saving queue numbers when setting RSS indirection table net: ena: ethtool: use correct value for crc32 hash net: ena: ena-com.c: prevent NULL pointer dereference cifs: Fix mode output in debugging statements cfg80211: add missing policy for NL80211_ATTR_STATUS_CODE sysrq: Restore original console_loglevel when sysrq disabled sysrq: Remove duplicated sysrq message net: fib_rules: Correctly set table field when table number exceeds 8 bits net: mscc: fix in frame extraction net: phy: restore mdio regs in the iproc mdio driver net: sched: correct flower port blocking nfc: pn544: Fix occasional HW initialization failure sctp: move the format error check out of __sctp_sf_do_9_1_abort ipv6: Fix route replacement with dev-only route ipv6: Fix nlmsg_flags when splitting a multipath route qede: Fix race between rdma destroy workqueue and link change event net/tls: Fix to avoid gettig invalid tls record ext4: potential crash on allocation error in ext4_alloc_flex_bg_array() audit: fix error handling in audit_data_to_entry() ACPICA: Introduce ACPI_ACCESS_BYTE_WIDTH() macro ACPI: watchdog: Fix gas->access_width usage KVM: VMX: check descriptor table exits on instruction emulation HID: ite: Only bind to keyboard USB interface on Acer SW5-012 keyboard dock HID: core: fix off-by-one memset in hid_report_raw_event() HID: core: increase HID report buffer size to 8KiB macintosh: therm_windtunnel: fix regression when instantiating devices tracing: Disable trace_printk() on post poned tests Revert "PM / devfreq: Modify the device name as devfreq(X) for sysfs" amdgpu/gmc_v9: save/restore sdpif regs during S3 vhost: Check docket sk_family instead of call getname HID: alps: Fix an error handling path in 'alps_input_configured()' HID: hiddev: Fix race in in hiddev_disconnect() MIPS: VPE: Fix a double free and a memory leak in 'release_vpe()' i2c: altera: Fix potential integer overflow i2c: jz4780: silence log flood on txabrt drm/i915/gvt: Fix orphan vgpu dmabuf_objs' lifetime drm/i915/gvt: Separate display reset from ALL_ENGINES reset hv_netvsc: Fix unwanted wakeup in netvsc_attach() usb: charger: assign specific number for enum value s390/qeth: vnicc Fix EOPNOTSUPP precedence net: netlink: cap max groups which will be considered in netlink_bind() net: atlantic: fix use after free kasan warn net: atlantic: fix potential error handling net/smc: no peer ID in CLC decline for SMCD net: ena: make ena rxfh support ETH_RSS_HASH_NO_CHANGE namei: only return -ECHILD from follow_dotdot_rcu() mwifiex: drop most magic numbers from mwifiex_process_tdls_action_frame() mwifiex: delete unused mwifiex_get_intf_num() KVM: SVM: Override default MMIO mask if memory encryption is enabled KVM: Check for a bad hva before dropping into the ghc slow path sched/fair: Optimize update_blocked_averages() sched/fair: Fix O(nr_cgroups) in the load balancing path perf stat: Use perf_evsel__is_clocki() for clock events perf stat: Fix shadow stats for clock events drivers: net: xgene: Fix the order of the arguments of 'alloc_etherdev_mqs()' kprobes: Set unoptimized flag after unoptimizing code pwm: omap-dmtimer: put_device() after of_find_device_by_node() perf hists browser: Restore ESC as "Zoom out" of DSO/thread/etc KVM: x86: Remove spurious kvm_mmu_unload() from vcpu destruction path KVM: x86: Remove spurious clearing of async #PF MSR thermal: brcmstb_thermal: Do not use DT coefficients netfilter: nft_tunnel: no need to call htons() when dumping ports netfilter: nf_flowtable: fix documentation mm/huge_memory.c: use head to check huge zero page mm, thp: fix defrag setting if newline is not used audit: always check the netlink payload length in audit_receive_msg() Linux 4.19.108 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ib98db500eded0a83d89c38900bbdf9ff5d6a37e0
Greg Kroah-Hartman
commited |
8290fa4ad8 | |
[ Upstream commit 756125289285f6e55a03861bf4b6257aa3d19a93 ] This patch ensures that we always check the netlink payload length in audit_receive_msg() before we take any action on the payload itself. Cc: stable@vger.kernel.org Reported-by: syzbot+399c44bf1f43b8747403@syzkaller.appspotmail.com Reported-by: syzbot+e4b12d8d202701f08b6d@syzkaller.appspotmail.com Signed-off-by: Paul Moore <paul@paul-moore.com> Signed-off-by: Sasha Levin <sashal@kernel.org> 
Paul Moore
authored and
Greg Kroah-Hartman
commited |
9d2fdc4c7e | |
commit f66c0447cca1281116224d474cdb37d6a18e4b5b upstream.
Set the unoptimized flag after confirming the code is completely
unoptimized. Without this fix, when a kprobe hits the intermediate
modified instruction (the first byte is replaced by an INT3, but
later bytes can still be a jump address operand) while unoptimizing,
it can return to the middle byte of the modified code, which causes
an invalid instruction exception in the kernel.
Usually, this is a rare case, but if we put a probe on the function
call while text patching, it always causes a kernel panic as below:
# echo p text_poke+5 > kprobe_events
# echo 1 > events/kprobes/enable
# echo 0 > events/kprobes/enable
invalid opcode: 0000 [#1] PREEMPT SMP PTI
RIP: 0010:text_poke+0x9/0x50
Call Trace:
arch_unoptimize_kprobe+0x22/0x28
arch_unoptimize_kprobes+0x39/0x87
kprobe_optimizer+0x6e/0x290
process_one_work+0x2a0/0x610
worker_thread+0x28/0x3d0
? process_one_work+0x610/0x610
kthread+0x10d/0x130
? kthread_park+0x80/0x80
ret_from_fork+0x3a/0x50
text_poke() is used for patching the code in optprobes.
This can happen even if we blacklist text_poke() and other functions,
because there is a small time window during which we show the intermediate
code to other CPUs.
[ mingo: Edited the changelog. ]
Tested-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bristot@redhat.com
Fixes:
Masami Hiramatsu
authored and
Greg Kroah-Hartman
commited |
39af044d1c | |
commit 039ae8bcf7a5f4476f4487e6bf816885fb3fb617 upstream.
This re-applies the commit reverted here:
commit c40f7d74c741 ("sched/fair: Fix infinite loop in update_blocked_averages() by reverting
Vincent Guittot
authored and
Greg Kroah-Hartman
commited |
d71744b5c1 | |
commit 31bc6aeaab1d1de8959b67edbed5c7a4b3cdbe7c upstream.
Removing a cfs_rq from rq->leaf_cfs_rq_list can break the parent/child
ordering of the list when it will be added back. In order to remove an
empty and fully decayed cfs_rq, we must remove its children too, so they
will be added back in the right order next time.
With a normal decay of PELT, a parent will be empty and fully decayed
if all children are empty and fully decayed too. In such a case, we just
have to ensure that the whole branch will be added when a new task is
enqueued. This is default behavior since :
commit f6783319737f ("sched/fair: Fix insertion in rq->leaf_cfs_rq_list")
In case of throttling, the PELT of throttled cfs_rq will not be updated
whereas the parent will. This breaks the assumption made above unless we
remove the children of a cfs_rq that is throttled. Then, they will be
added back when unthrottled and a sched_entity will be enqueued.
As throttled cfs_rq are now removed from the list, we can remove the
associated test in update_blocked_averages().
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
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>
Cc: sargun@sargun.me
Cc: tj@kernel.org
Cc: xiexiuqi@huawei.com
Cc: xiezhipeng1@huawei.com
Link: https://lkml.kernel.org/r/1549469662-13614-2-git-send-email-vincent.guittot@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Vishnu Rangayyan <vishnu.rangayyan@apple.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vincent Guittot
authored and
Greg Kroah-Hartman
commited |
a1f1a978a7 | |
commit 78041c0c9e935d9ce4086feeff6c569ed88ddfd4 upstream.
The tracing seftests checks various aspects of the tracing infrastructure,
and one is filtering. If trace_printk() is active during a self test, it can
cause the filtering to fail, which will disable that part of the trace.
To keep the selftests from failing because of trace_printk() calls,
trace_printk() checks the variable tracing_selftest_running, and if set, it
does not write to the tracing buffer.
As some tracers were registered earlier in boot, the selftest they triggered
would fail because not all the infrastructure was set up for the full
selftest. Thus, some of the tests were post poned to when their
infrastructure was ready (namely file system code). The postpone code did
not set the tracing_seftest_running variable, and could fail if a
trace_printk() was added and executed during their run.
Cc: stable@vger.kernel.org
Fixes:
Steven Rostedt (VMware)
authored and
Greg Kroah-Hartman
commited |
91495e01e8 | |
commit 2ad3e17ebf94b7b7f3f64c050ff168f9915345eb upstream. Commit
Paul Moore
authored and
Greg Kroah-Hartman
commited |
c24d457a82 | |
An external fragmentation event was previously described as
When the page allocator fragments memory, it records the event using
the mm_page_alloc_extfrag event. If the fallback_order is smaller
than a pageblock order (order-9 on 64-bit x86) then it's considered
an event that will cause external fragmentation issues in the future.
The kernel reduces the probability of such events by increasing the
watermark sizes by calling set_recommended_min_free_kbytes early in the
lifetime of the system. This works reasonably well in general but if
there are enough sparsely populated pageblocks then the problem can still
occur as enough memory is free overall and kswapd stays asleep.
This patch introduces a watermark_boost_factor sysctl that allows a zone
watermark to be temporarily boosted when an external fragmentation causing
events occurs. The boosting will stall allocations that would decrease
free memory below the boosted low watermark and kswapd is woken if the
calling context allows to reclaim an amount of memory relative to the size
of the high watermark and the watermark_boost_factor until the boost is
cleared. When kswapd finishes, it wakes kcompactd at the pageblock order
to clean some of the pageblocks that may have been affected by the
fragmentation event. kswapd avoids any writeback, slab shrinkage and swap
from reclaim context during this operation to avoid excessive system
disruption in the name of fragmentation avoidance. Care is taken so that
kswapd will do normal reclaim work if the system is really low on memory.
This was evaluated using the same workloads as "mm, page_alloc: Spread
allocations across zones before introducing fragmentation".
1-socket Skylake machine
config-global-dhp__workload_thpfioscale XFS (no special madvise)
4 fio threads, 1 THP allocating thread
--------------------------------------
4.20-rc3 extfrag events < order 9: 804694
4.20-rc3+patch: 408912 (49% reduction)
4.20-rc3+patch1-4: 18421 (98% reduction)
4.20.0-rc3 4.20.0-rc3
lowzone-v5r8 boost-v5r8
Amean fault-base-1 653.58 ( 0.00%) 652.71 ( 0.13%)
Amean fault-huge-1 0.00 ( 0.00%) 178.93 * -99.00%*
4.20.0-rc3 4.20.0-rc3
lowzone-v5r8 boost-v5r8
Percentage huge-1 0.00 ( 0.00%) 5.12 ( 100.00%)
Note that external fragmentation causing events are massively reduced by
this path whether in comparison to the previous kernel or the vanilla
kernel. The fault latency for huge pages appears to be increased but that
is only because THP allocations were successful with the patch applied.
1-socket Skylake machine
global-dhp__workload_thpfioscale-madvhugepage-xfs (MADV_HUGEPAGE)
-----------------------------------------------------------------
4.20-rc3 extfrag events < order 9: 291392
4.20-rc3+patch: 191187 (34% reduction)
4.20-rc3+patch1-4: 13464 (95% reduction)
thpfioscale Fault Latencies
4.20.0-rc3 4.20.0-rc3
lowzone-v5r8 boost-v5r8
Min fault-base-1 912.00 ( 0.00%) 905.00 ( 0.77%)
Min fault-huge-1 127.00 ( 0.00%) 135.00 ( -6.30%)
Amean fault-base-1 1467.55 ( 0.00%) 1481.67 ( -0.96%)
Amean fault-huge-1 1127.11 ( 0.00%) 1063.88 * 5.61%*
4.20.0-rc3 4.20.0-rc3
lowzone-v5r8 boost-v5r8
Percentage huge-1 77.64 ( 0.00%) 83.46 ( 7.49%)
As before, massive reduction in external fragmentation events, some jitter
on latencies and an increase in THP allocation success rates.
2-socket Haswell machine
config-global-dhp__workload_thpfioscale XFS (no special madvise)
4 fio threads, 5 THP allocating threads
----------------------------------------------------------------
4.20-rc3 extfrag events < order 9: 215698
4.20-rc3+patch: 200210 (7% reduction)
4.20-rc3+patch1-4: 14263 (93% reduction)
4.20.0-rc3 4.20.0-rc3
lowzone-v5r8 boost-v5r8
Amean fault-base-5 1346.45 ( 0.00%) 1306.87 ( 2.94%)
Amean fault-huge-5 3418.60 ( 0.00%) 1348.94 ( 60.54%)
4.20.0-rc3 4.20.0-rc3
lowzone-v5r8 boost-v5r8
Percentage huge-5 0.78 ( 0.00%) 7.91 ( 910.64%)
There is a 93% reduction in fragmentation causing events, there is a big
reduction in the huge page fault latency and allocation success rate is
higher.
2-socket Haswell machine
global-dhp__workload_thpfioscale-madvhugepage-xfs (MADV_HUGEPAGE)
-----------------------------------------------------------------
4.20-rc3 extfrag events < order 9: 166352
4.20-rc3+patch: 147463 (11% reduction)
4.20-rc3+patch1-4: 11095 (93% reduction)
thpfioscale Fault Latencies
4.20.0-rc3 4.20.0-rc3
lowzone-v5r8 boost-v5r8
Amean fault-base-5 6217.43 ( 0.00%) 7419.67 * -19.34%*
Amean fault-huge-5 3163.33 ( 0.00%) 3263.80 ( -3.18%)
4.20.0-rc3 4.20.0-rc3
lowzone-v5r8 boost-v5r8
Percentage huge-5 95.14 ( 0.00%) 87.98 ( -7.53%)
There is a large reduction in fragmentation events with some jitter around
the latencies and success rates. As before, the high THP allocation
success rate does mean the system is under a lot of pressure. However, as
the fragmentation events are reduced, it would be expected that the
long-term allocation success rate would be higher.
Link: http://lkml.kernel.org/r/20181123114528.28802-5-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Zi Yan <zi.yan@cs.rutgers.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Change-Id: Ied06272defcdbf3fff07b7ebccb46c68ce081e1e
Git-commit: 1c30844d2dfe272d58c8fc000960b835d13aa2ac
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
[vinmenon@codeaurora.org: trivial merge conflict fixes]
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
(cherry picked from commit 1c30844d2dfe272d58c8fc000960b835d13aa2ac)
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 150378964
Mark Salyzyn
commited |
5cbbeadd5a | |
The check to ensure that the new written value into cpu.uclamp.{min,max}
is within range, [0:100], wasn't working because of the signed
comparison
7301 if (req.percent > UCLAMP_PERCENT_SCALE) {
7302 req.ret = -ERANGE;
7303 return req;
7304 }
# echo -1 > cpu.uclamp.min
# cat cpu.uclamp.min
42949671.96
Cast req.percent into u64 to force the comparison to be unsigned and
work as intended in capacity_from_percent().
# echo -1 > cpu.uclamp.min
sh: write error: Numerical result out of range
Bug: 120440300
Fixes: 2480c093130f ("sched/uclamp: Extend CPU's cgroup controller")
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20200114210947.14083-1-qais.yousef@arm.com
(cherry picked from commit b562d140649966d4daedd0483a8fe59ad3bb465a)
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Change-Id: I17fc2b119dcbffb212e130ed2c37ae3a8d5bbb61
Qais Yousef
authored and
Quentin Perret
commited |
cb0a2cdd48 | |
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAl5ZNBUACgkQONu9yGCS aT6vMhAAoNfLw1JEqsOgplIUKuLJnIBOldyJeZ8HCrR9yhIEDgevHQzaWutyD6H4 2AzImhL8YBwAw+9UHq5Z1PT3PluKt78vRr1ZxDyNniHGJdDsoWTed9h+QjyRkDFl KZSV30GraO8/P6e9Ep5CgKLiCID7m2U9jYZkb6QL21wawprEi6dgSOb21prPyN1d SKCtcrhUQFqDPOgqU3Cyv9t/vxzrgBKSZRKOXZON5gBlwmFHuPk7lcSB80DKd+7S Um7oatwFBhQwKyuhJARXbrhIw2z6Y+xf1wJF+yNW9v/VpR4NE+SkzX2SaX7lercF JigVmtpth1KBa2wGw3N0XOdNG6NYrLtzeBW+o7mlZk4D2OKCeUoZEdM5RiVJNLCK Ze1soQtHoRFViqPx5Or06pOsMagKRNxzjkFPd1cfA7vpRw2KRNKCFXec/Ms8coUd /WslTHkyfryRfzFDtyyCATVXHPizkZqJyrR/3pes4sGITIpFczWVHiQ3mqUIrdXN d08CwsYS0ivQwvl5hZzxyqUlUWVhGccT1PpO6+SZp2IuGT3YWZzpQKDh0+IlIsv0 TUvEtz3xjzL5EDUmUFsRUy5hBINdzjE/iKb3KOHw0y8xik5Rp0LkHtMRPmro5+TT A4JqVfxTGdTprRXPeCS/7X1jOoOxnxm06QZ+HqbHCL5CUi6nZFk= =XhCO -----END PGP SIGNATURE----- Merge 4.19.107 into android-4.19 Changes in 4.19.107 iommu/qcom: Fix bogus detach logic ALSA: hda: Use scnprintf() for printing texts for sysfs/procfs ALSA: hda/realtek - Apply quirk for MSI GP63, too ALSA: hda/realtek - Apply quirk for yet another MSI laptop ASoC: sun8i-codec: Fix setting DAI data format ecryptfs: fix a memory leak bug in parse_tag_1_packet() ecryptfs: fix a memory leak bug in ecryptfs_init_messaging() thunderbolt: Prevent crash if non-active NVMem file is read USB: misc: iowarrior: add support for 2 OEMed devices USB: misc: iowarrior: add support for the 28 and 28L devices USB: misc: iowarrior: add support for the 100 device floppy: check FDC index for errors before assigning it vt: fix scrollback flushing on background consoles vt: selection, handle pending signals in paste_selection vt: vt_ioctl: fix race in VT_RESIZEX staging: android: ashmem: Disallow ashmem memory from being remapped staging: vt6656: fix sign of rx_dbm to bb_pre_ed_rssi. xhci: Force Maximum Packet size for Full-speed bulk devices to valid range. xhci: fix runtime pm enabling for quirky Intel hosts xhci: Fix memory leak when caching protocol extended capability PSI tables - take 2 usb: host: xhci: update event ring dequeue pointer on purpose USB: core: add endpoint-blacklist quirk USB: quirks: blacklist duplicate ep on Sound Devices USBPre2 usb: uas: fix a plug & unplug racing USB: Fix novation SourceControl XL after suspend USB: hub: Don't record a connect-change event during reset-resume USB: hub: Fix the broken detection of USB3 device in SMSC hub usb: dwc2: Fix SET/CLEAR_FEATURE and GET_STATUS flows usb: dwc3: gadget: Check for IOC/LST bit in TRB->ctrl fields staging: rtl8188eu: Fix potential security hole staging: rtl8188eu: Fix potential overuse of kernel memory staging: rtl8723bs: Fix potential security hole staging: rtl8723bs: Fix potential overuse of kernel memory powerpc/tm: Fix clearing MSR[TS] in current when reclaiming on signal delivery jbd2: fix ocfs2 corrupt when clearing block group bits x86/mce/amd: Publish the bank pointer only after setup has succeeded x86/mce/amd: Fix kobject lifetime x86/cpu/amd: Enable the fixed Instructions Retired counter IRPERF serial: 8250: Check UPF_IRQ_SHARED in advance tty/serial: atmel: manage shutdown in case of RS485 or ISO7816 mode tty: serial: imx: setup the correct sg entry for tx dma serdev: ttyport: restore client ops on deregistration MAINTAINERS: Update drm/i915 bug filing URL Revert "ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()" mm/memcontrol.c: lost css_put in memcg_expand_shrinker_maps() nvme-multipath: Fix memory leak with ana_log_buf genirq/irqdomain: Make sure all irq domain flags are distinct mm/vmscan.c: don't round up scan size for online memory cgroup drm/amdgpu/soc15: fix xclk for raven xhci: apply XHCI_PME_STUCK_QUIRK to Intel Comet Lake platforms KVM: nVMX: Don't emulate instructions in guest mode KVM: x86: don't notify userspace IOAPIC on edge-triggered interrupt EOI tty: serial: qcom_geni_serial: Fix UART hang tty: serial: qcom_geni_serial: Remove interrupt storm tty: serial: qcom_geni_serial: Remove use of *_relaxed() and mb() tty: serial: qcom_geni_serial: Remove set_rfr_wm() and related variables tty: serial: qcom_geni_serial: Remove xfer_mode variable tty: serial: qcom_geni_serial: Fix RX cancel command failure lib/stackdepot.c: fix global out-of-bounds in stack_slabs drm/nouveau/kms/gv100-: Re-set LUT after clearing for modesets ext4: fix a data race in EXT4_I(inode)->i_disksize ext4: add cond_resched() to __ext4_find_entry() ext4: fix potential race between online resizing and write operations ext4: fix potential race between s_group_info online resizing and access ext4: fix potential race between s_flex_groups online resizing and access ext4: fix mount failure with quota configured as module ext4: rename s_journal_flag_rwsem to s_writepages_rwsem ext4: fix race between writepages and enabling EXT4_EXTENTS_FL KVM: nVMX: Refactor IO bitmap checks into helper function KVM: nVMX: Check IO instruction VM-exit conditions KVM: nVMX: handle nested posted interrupts when apicv is disabled for L1 KVM: apic: avoid calculating pending eoi from an uninitialized val btrfs: fix bytes_may_use underflow in prealloc error condtition btrfs: reset fs_root to NULL on error in open_ctree btrfs: do not check delayed items are empty for single transaction cleanup Btrfs: fix btrfs_wait_ordered_range() so that it waits for all ordered extents Revert "dmaengine: imx-sdma: Fix memory leak" scsi: Revert "RDMA/isert: Fix a recently introduced regression related to logout" scsi: Revert "target: iscsi: Wait for all commands to finish before freeing a session" usb: gadget: composite: Fix bMaxPower for SuperSpeedPlus usb: dwc2: Fix in ISOC request length checking staging: rtl8723bs: fix copy of overlapping memory staging: greybus: use after free in gb_audio_manager_remove_all() ecryptfs: replace BUG_ON with error handling code iommu/vt-d: Fix compile warning from intel-svm.h genirq/proc: Reject invalid affinity masks (again) bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill ALSA: rawmidi: Avoid bit fields for state flags ALSA: seq: Avoid concurrent access to queue flags ALSA: seq: Fix concurrent access to queue current tick/time netfilter: xt_hashlimit: limit the max size of hashtable rxrpc: Fix call RCU cleanup using non-bh-safe locks ata: ahci: Add shutdown to freeze hardware resources of ahci xen: Enable interrupts when calling _cond_resched() s390/mm: Explicitly compare PAGE_DEFAULT_KEY against zero in storage_key_init_range Revert "char/random: silence a lockdep splat with printk()" Linux 4.19.107 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I74e3d49c54d4afcfa4049042163cb879c3de3100
Greg Kroah-Hartman
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7cd2c86c50 |