linux/kernel
Sasha Levin 823dd3224a signals: avoid random wakeups in sigsuspend()
A random wakeup can get us out of sigsuspend() without TIF_SIGPENDING
being set.

Avoid that by making sure we were signaled, like sys_pause() does.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-02-05 18:10:40 -08:00
..
bpf perf/bpf: Convert perf_event_array to use struct file 2016-01-29 08:35:25 +01:00
configs
debug module: use a structure to encapsulate layout. 2015-12-04 22:46:25 +01:00
events Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-01-31 15:38:27 -08:00
gcov gcov: use within_module() helper. 2015-12-04 22:46:25 +01:00
irq Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-01-31 14:48:58 -08:00
livepatch livepatch: Cleanup module page permission changes 2015-12-04 22:51:07 +01:00
locking rtmutex: Make wait_lock irq safe 2016-01-26 11:08:35 +01:00
power PM: APM_EMULATION does not depend on PM 2016-01-27 23:20:14 +01:00
printk kernel: printk: specify alignment for struct printk_log 2016-01-20 17:09:18 -08:00
rcu Merge branches 'doc.2015.12.05a', 'exp.2015.12.07a', 'fixes.2015.12.07a', 'list.2015.12.04b' and 'torture.2015.12.05a' into HEAD 2015-12-07 17:02:54 -08:00
sched Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-01-31 15:44:04 -08:00
time Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-01-31 15:49:06 -08:00
trace A cleanup to the stack tracer broke stack tracing on s390. 2016-02-03 09:31:34 -08:00
.gitignore
acct.c
async.c async: export current_is_async() 2015-11-19 17:51:48 +01:00
audit_fsnotify.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
audit_tree.c
audit_watch.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
audit.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2016-01-17 19:13:15 -08:00
audit.h security: Make inode argument of inode_getsecid non-const 2015-12-24 11:09:39 -05:00
auditfilter.c
auditsc.c security: Make inode argument of inode_getsecid non-const 2015-12-24 11:09:39 -05:00
backtracetest.c
bounds.c
capability.c
cgroup_freezer.c cgroup: kill cgrp_ss_priv[CGROUP_CANFORK_COUNT] and friends 2015-12-03 10:24:08 -05:00
cgroup_pids.c cgroup_pids: fix a typo. 2015-12-14 14:54:37 -05:00
cgroup.c Merge branch 'for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2016-01-12 19:20:32 -08:00
compat.c
configs.c
context_tracking.c context_tracking: Switch to new static_branch API 2015-11-24 09:56:43 +01:00
cpu_pm.c
cpu.c kernel/cpu.c: make set_cpu_* static inlines 2016-01-20 17:09:18 -08:00
cpuset.c Merge branch 'for-4.4-fixes' into for-4.5 2015-12-03 10:22:52 -05:00
crash_dump.c
cred.c kmemcg: account certain kmem allocations to memcg 2016-01-14 16:00:49 -08:00
delayacct.c kmemcg: account certain kmem allocations to memcg 2016-01-14 16:00:49 -08:00
dma.c
elfcore.c
exec_domain.c
exit.c exit: remove unneeded declaration of exit_mm() 2016-01-20 17:09:18 -08:00
extable.c
fork.c mm: rework virtual memory accounting 2016-01-14 16:00:49 -08:00
freezer.c
futex_compat.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2016-01-20 17:09:18 -08:00
futex.c rtmutex: Make wait_lock irq safe 2016-01-26 11:08:35 +01:00
groups.c
hung_task.c
irq_work.c treewide: Remove old email address 2015-11-23 09:44:58 +01:00
jump_label.c treewide: Remove old email address 2015-11-23 09:44:58 +01:00
kallsyms.c
kcmp.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2016-01-20 17:09:18 -08:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec_core.c kernel/kexec_core.c: use list_for_each_entry_safe in kimage_free_page_list 2016-01-20 17:09:18 -08:00
kexec_file.c kexec: move some memembers and definitions within the scope of CONFIG_KEXEC_FILE 2016-01-20 17:09:18 -08:00
kexec_internal.h kexec: move some memembers and definitions within the scope of CONFIG_KEXEC_FILE 2016-01-20 17:09:18 -08:00
kexec.c kexec: set KEXEC_TYPE_CRASH before sanity_check_segment_list() 2016-01-20 17:09:18 -08:00
kmod.c
kprobes.c
ksysfs.c rcu: Remove TINY_RCU bloat from pointless boot parameters 2015-12-07 16:59:37 -08:00
kthread.c
latencytop.c
Makefile
membarrier.c
memremap.c phys_to_pfn_t: use phys_addr_t 2016-01-31 09:10:19 -08:00
module_signing.c
module-internal.h
module.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching 2016-01-14 16:38:02 -08:00
notifier.c
nsproxy.c
padata.c
panic.c printk: do cond_resched() between lines while outputting to consoles 2016-01-16 11:17:25 -08:00
params.c Nothing exciting, minor tweaks and cleanups. 2015-11-09 15:53:39 -08:00
pid_namespace.c
pid.c Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-01-31 15:44:04 -08:00
profile.c
ptrace.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2016-01-20 17:09:18 -08:00
range.c
reboot.c
relay.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
resource.c restrict /dev/mem to idle io memory ranges 2016-01-09 06:30:49 -08:00
seccomp.c seccomp: always propagate NO_NEW_PRIVS on tsync 2016-01-27 07:38:25 -08:00
signal.c signals: avoid random wakeups in sigsuspend() 2016-02-05 18:10:40 -08:00
smp.c mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd 2015-11-06 17:50:42 -08:00
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c kernel/stop_machine.c: remove CONFIG_SMP dependencies 2016-01-16 11:17:24 -08:00
sys_ni.c vfs: add copy_file_range syscall and vfs helper 2015-12-01 14:00:53 -05:00
sys.c prctl: take mmap sem for writing to protect against others 2016-01-20 17:09:18 -08:00
sysctl_binary.c
sysctl.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-01-22 10:24:03 -08:00
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
uid16.c
up.c
user_namespace.c kernel/*: switch to memdup_user_nul() 2016-01-04 10:27:55 -05:00
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
watchdog.c Merge branch 'for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 2016-01-11 18:53:13 -08:00
workqueue_internal.h
workqueue.c workqueue: simplify the apply_workqueue_attrs_locked() 2016-01-07 11:04:34 -05:00