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linux/kernel
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Shaleen Agrawal 1e674650ff ANDROID: sched: Fix wake_q length tracking 
The current approach to carry the wake_q length is exposed to an
intertask stack access. For example, if A sets the wake_q_head for
B but is preempted before it is able to set it back to NULL,
then B continues to point to an address corresponding to A's stack.
If B is then woken up by another task, it ends up accessing
the address pointing to A's stack. This causes a memory fault.

Replace this with a simple parameter which indicates the number
of tasks that are being woken up as part of the same event. This
avoids saving and accessing on stack pointers.

Bug: 173981591
Change-Id: I0031747d79a27673e680f7b1121eb4896ac7c699
Signed-off-by: Shaleen Agrawal <shalagra@codeaurora.org>
2021-02-09 20:04:50 +00:00
..
bpf
bpf: Local storage helpers should check nullness of owner ptr passed
2021-01-27 11:55:28 +01:00
cgroup
BACKPORT: FROMLIST: cpuset: Honour task_cpu_possible_mask() in guarantee_online_cpus()
2021-02-05 09:20:53 +00:00
configs
…
debug
kdb: Fix pager search for multi-line strings
2020-10-01 14:44:08 +01:00
dma
FROMLIST: mm: cma: introduce gfp flag in cma_alloc instead of no_warn
2021-01-25 12:21:02 -08:00
entry
entry: Fix the incorrect ordering of lockdep and RCU check
2020-11-04 18:06:14 +01:00
events
Merge 5.10.6 into android12-5.10
2021-01-13 10:28:55 +01:00
gcov
gcov: add support for GCC 10.1
2020-09-11 09:33:54 -07:00
irq
UPSTREAM: driver core: Add fwnode_init()
2021-01-21 18:02:19 -08:00
kcsan
kernel/: fix repeated words in comments
2020-10-16 11:11:19 -07:00
livepatch
kernel/: fix repeated words in comments
2020-10-16 11:11:19 -07:00
locking
Merge 5.10.14 into android12-5.10
2021-02-08 20:05:12 -08:00
power
Merge 5.10.13 into android12-5.10
2021-02-05 10:38:34 +01:00
printk
Merge 5.10.12 into android12-5.10
2021-01-30 14:29:02 +01:00
rcu
rcu-tasks: Move RCU-tasks initialization to before early_initcall()
2021-01-19 18:27:28 +01:00
sched
ANDROID: sched: Fix wake_q length tracking
2021-02-09 20:04:50 +00:00
time
ANDROID: timer: Add vendor hook for timer calc index
2021-02-02 02:04:18 +00:00
trace
FROMGIT: tracing: add error_report_end trace point
2021-02-05 09:20:54 -08:00
.gitignore
…
acct.c
kernel: acct.c: fix some kernel-doc nits
2020-10-16 11:11:19 -07:00
async.c
treewide: Remove uninitialized_var() usage
2020-07-16 12:35:15 -07:00
audit_fsnotify.c
fsnotify: generalize handle_inode_event()
2020-12-30 11:54:18 +01:00
audit_tree.c
fsnotify: generalize handle_inode_event()
2020-12-30 11:54:18 +01:00
audit_watch.c
fsnotify: generalize handle_inode_event()
2020-12-30 11:54:18 +01:00
audit.c
audit: Remove redundant null check
2020-08-26 09:10:39 -04:00
audit.h
audit: change unnecessary globals into statics
2020-08-17 20:26:58 -04:00
auditfilter.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
auditsc.c
Merge tag 'audit-pr-20200803' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
2020-08-04 14:20:26 -07:00
backtracetest.c
treewide: Replace DECLARE_TASKLET() with DECLARE_TASKLET_OLD()
2020-07-30 11:15:58 -07:00
bounds.c
…
capability.c
LSM: Signal to SafeSetID when setting group IDs
2020-10-13 09:17:34 -07:00
cfi.c
ANDROID: add support for Clang's Control Flow Integrity (CFI)
2021-01-14 16:28:57 +00:00
compat.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
configs.c
…
context_tracking.c
context_tracking: Ensure that the critical path cannot be instrumented
2020-06-11 15:14:36 +02:00
cpu_pm.c
notifier: Fix broken error handling pattern
2020-09-01 09:58:03 +02:00
cpu.c
ANDROID: cpu/hotplug: create vendor hook for cpu_up/cpu_down
2021-01-26 19:30:11 +00:00
crash_core.c
kdump: append kernel build-id string to VMCOREINFO
2020-08-12 10:58:01 -07:00
crash_dump.c
…
cred.c
…
delayacct.c
…
dma.c
…
exec_domain.c
…
exit.c
kernel/io_uring: cancel io_uring before task works
2021-01-30 13:55:18 +01:00
extable.c
…
fail_function.c
fail_function: Remove a redundant mutex unlock
2020-11-19 11:58:16 -08:00
fork.c
FROMLIST: mm: protect against PTE changes done by dup_mmap()
2021-01-22 18:02:09 +00:00
freezer.c
…
futex.c
Merge 5.10.12 into android12-5.10
2021-01-30 14:29:02 +01:00
gen_kheaders.sh
kbuild: add variables for compression tools
2020-06-06 23:42:01 +09:00
groups.c
LSM: Signal to SafeSetID when setting group IDs
2020-10-13 09:17:34 -07:00
hung_task.c
kernel/hung_task.c: make type annotations consistent
2020-11-02 12:14:19 -08:00
iomem.c
…
irq_work.c
ANDROID: Sched: Export scheduler symbols needed by vendor modules
2020-12-03 16:50:04 +00:00
jump_label.c
kernel/: fix repeated words in comments
2020-10-16 11:11:19 -07:00
kallsyms.c
ANDROID: kallsyms: cfi: strip hashes from static functions
2021-01-14 16:31:46 +00:00
kcmp.c
exec: Transform exec_update_mutex into a rw_semaphore
2021-01-09 13:46:24 +01:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
…
Kconfig.preempt
…
kcov.c
kcov: make some symbols static
2020-08-12 10:58:02 -07:00
kexec_core.c
kernel: kexec: remove the lock operation of system_transition_mutex
2021-02-03 23:28:37 +01:00
kexec_elf.c
…
kexec_file.c
kernel/resource: move and rename IORESOURCE_MEM_DRIVER_MANAGED
2020-10-16 11:11:18 -07:00
kexec_internal.h
…
kexec.c
LSM: Introduce kernel_post_load_data() hook
2020-10-05 13:37:03 +02:00
kheaders.c
…
kmod.c
kmod: remove redundant "be an" in the comment
2020-08-12 10:58:01 -07:00
kprobes.c
kprobes: Tell lockdep about kprobe nesting
2020-11-04 09:46:06 -05:00
ksysfs.c
…
kthread.c
Merge 5.10.14 into android12-5.10
2021-02-08 20:05:12 -08:00
latencytop.c
…
Makefile
ANDROID: add support for Clang's Control Flow Integrity (CFI)
2021-01-14 16:28:57 +00:00
module_signature.c
…
module_signing.c
…
module-internal.h
…
module.c
ANDROID: add support for Clang's Control Flow Integrity (CFI)
2021-01-14 16:28:57 +00:00
notifier.c
notifier: Fix broken error handling pattern
2020-09-01 09:58:03 +02:00
nsproxy.c
nsproxy: support CLONE_NEWTIME with setns()
2020-07-08 11:14:22 +02:00
padata.c
padata: fix possible padata_works_lock deadlock
2020-09-04 17:51:55 +10:00
panic.c
panic: don't dump stack twice on warn
2020-11-14 11:26:04 -08:00
params.c
params: Replace zero-length array with flexible-array member
2020-10-29 17:22:59 -05:00
pid_namespace.c
kernel/: fix repeated words in comments
2020-10-16 11:11:19 -07:00
pid.c
Merge 5.10.6 into android12-5.10
2021-01-13 10:28:55 +01:00
profile.c
…
ptrace.c
ptrace: Set PF_SUPERPRIV when checking capability
2020-11-17 12:53:22 -08:00
range.c
kernel.h: split out min()/max() et al. helpers
2020-10-16 11:11:19 -07:00
reboot.c
Merge e28c0d7c92 ("Merge branch 'akpm' (patches from Andrew)") into android-mainline
2020-11-15 14:37:09 +01:00
regset.c
regset: kill ->get()
2020-07-27 14:31:12 -04:00
relay.c
kernel/relay.c: drop unneeded initialization
2020-10-16 11:11:22 -07:00
resource.c
kernel/resource: make iomem_resource implicit in release_mem_region_adjustable()
2020-10-16 11:11:18 -07:00
rseq.c
…
scftorture.c
scftorture: Add cond_resched() to test loop
2020-08-24 18:38:38 -07:00
scs.c
UPSTREAM: scs: switch to vmapped shadow stacks
2021-01-07 17:56:54 -08:00
seccomp.c
UPSTREAM: seccomp: Remove bogus __user annotations
2020-12-21 18:48:41 +00:00
signal.c
UPSTREAM: signal: define the SA_EXPOSE_TAGBITS bit in sa_flags
2021-01-22 10:05:52 -08:00
smp.c
ANDROID: fix 0-day build-break for non-GKI
2021-01-14 11:39:55 -08:00
smpboot.c
kthread: Extract KTHREAD_IS_PER_CPU
2021-02-07 15:37:17 +01:00
smpboot.h
…
softirq.c
ANDROID: softirq: Export irq_handler_exit tracepoint
2020-12-21 17:48:06 +00:00
stackleak.c
stackleak: let stack_erasing_sysctl take a kernel pointer buffer
2020-09-19 13:13:39 -07:00
stacktrace.c
stacktrace: Remove reliable argument from arch_stack_walk() callback
2020-09-18 14:24:16 +01:00
static_call.c
static_call: Fix return type of static_call_init
2020-10-02 21:18:25 +02:00
stop_machine.c
ANDROID: stop_machine: stop_one_cpu_async
2020-12-08 19:07:21 +00:00
sys_ni.c
mm/madvise: introduce process_madvise() syscall: an external memory hinting API
2020-10-18 09:27:10 -07:00
sys.c
Merge 'v5.10-rc1' into android-mainline
2020-10-29 06:32:38 +01:00
sysctl-test.c
…
sysctl.c
Merge 5.9-rc6 into android-mainline
2020-09-21 12:13:45 +02:00
task_work.c
task_work: cleanup notification modes
2020-10-17 15:05:30 -06:00
taskstats.c
taskstats: move specifying netlink policy back to ops
2020-10-02 19:11:12 -07:00
test_kprobes.c
…
torture.c
torture: Dump ftrace at shutdown only if requested
2020-06-29 12:01:45 -07:00
tracepoint.c
tracepoint: Replace zero-length array with flexible-array member
2020-10-29 17:22:59 -05:00
tsacct.c
…
ucount.c
…
uid16.c
…
uid16.h
…
umh.c
usermodehelper: reset umask to default before executing user process
2020-10-06 10:31:52 -07:00
up.c
…
user_namespace.c
kernel/: fix repeated words in comments
2020-10-16 11:11:19 -07:00
user-return-notifier.c
…
user.c
user.c: make uidhash_table static
2020-06-04 19:06:24 -07:00
usermode_driver.c
umd: Stop using split_argv
2020-07-07 11:58:59 -05:00
utsname_sysctl.c
…
utsname.c
…
watch_queue.c
watch_queue: Limit the number of watches a user can hold
2020-08-17 09:39:18 -07:00
watchdog_hld.c
…
watchdog.c
ANDROID: softlockup: add vendor hook for a softlockup task
2021-02-04 23:55:45 +00:00
workqueue_internal.h
…
workqueue.c
Merge 5.10.14 into android12-5.10
2021-02-08 20:05:12 -08:00