Tejun Heo 8cfe400ca5 Freezer: Fix a race during freezing of TASK_STOPPED tasks ... After calling freeze_task(), try_to_freeze_tasks() see whether the task is stopped or traced and if so, considers it to be frozen; however, nothing guarantees that either the task being frozen sees TIF_FREEZE or the freezer sees TASK_STOPPED -> TASK_RUNNING transition. The task being frozen may wake up and not see TIF_FREEZE while the freezer fails to notice the transition and believes the task is still stopped. This patch fixes the race by making freeze_task() always go through fake_signal_wake_up() for applicable tasks. The function goes through the target task's scheduler lock and thus guarantees that either the target sees TIF_FREEZE or try_to_freeze_task() sees TASK_RUNNING. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>		2010-12-24 15:02:40 +01:00
..
debug	kdb: fix crash when KDB_BASE_CMD_MAX is exceeded	2010-11-17 13:54:57 -06:00
gcov
irq	genirq: Fix incorrect proc spurious output	2010-12-01 08:44:26 +01:00
power	Freezer: Fix a race during freezing of TASK_STOPPED tasks	2010-12-24 15:02:40 +01:00
time
trace	Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/urgent	2010-12-16 11:21:24 +01:00
.gitignore
acct.c
async.c
audit.c	audit: Use rcu for task lookup protection	2010-10-30 08:45:42 -04:00
audit.h	audit: make functions static	2010-10-30 01:42:19 -04:00
audit_tree.c	in untag_chunk() we need to do alloc_chunk() a bit earlier	2010-10-30 02:18:32 -04:00
audit_watch.c	audit: make functions static	2010-10-30 01:42:19 -04:00
auditfilter.c	Audit: add support to match lsm labels on user audit messages	2010-10-30 01:41:57 -04:00
auditsc.c	audit mmap	2010-10-30 08:45:43 -04:00
backtracetest.c
bounds.c
capability.c
cgroup.c	convert cgroup and cpuset	2010-10-29 04:17:06 -04:00
cgroup_freezer.c	cgroup_freezer: update_freezer_state() does incorrect state transitions	2010-10-27 18:03:08 -07:00
compat.c
configs.c
cpu.c
cpuset.c	convert cgroup and cpuset	2010-10-29 04:17:06 -04:00
cred.c	signals: move cred_guard_mutex from task_struct to signal_struct	2010-10-27 18:03:12 -07:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	do_exit(): make sure that we run with get_fs() == USER_DS	2010-12-02 14:51:16 -08:00
extable.c
fork.c	Sched: fix skip_clock_update optimization	2010-12-08 20:15:06 +01:00
freezer.c	Freezer: Fix a race during freezing of TASK_STOPPED tasks	2010-12-24 15:02:40 +01:00
futex.c	futex: Address compiler warnings in exit_robust_list	2010-11-10 13:27:50 +01:00
futex_compat.c	futex: Address compiler warnings in exit_robust_list	2010-11-10 13:27:50 +01:00
groups.c
hrtimer.c
hung_task.c
hw_breakpoint.c	perf,hw_breakpoint: Initialize hardware api earlier	2010-11-12 14:51:55 +01:00
irq_work.c	irq_work: Drop cmpxchg() result	2010-11-18 13:18:47 +01:00
itimer.c
jump_label.c	jump label: Make arch_jump_label_text_poke_early() optional	2010-10-29 12:56:13 -04:00
kallsyms.c	Revert "kernel: make /proc/kallsyms mode 400 to reduce ease of attacking"	2010-11-19 11:54:40 -08:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c	use clear_page()/copy_page() in favor of memset()/memcpy() on whole pages	2010-10-26 16:52:13 -07:00
kfifo.c
kmod.c
kprobes.c	jump label: Fix error with preempt disable holding mutex	2010-10-29 12:55:55 -04:00
ksysfs.c
kthread.c
latencytop.c	latencytop: fix per task accumulator	2010-11-12 07:55:31 -08:00
lockdep.c
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
Makefile
module.c	tracing: Fix module use of trace_bprintk()	2010-11-10 22:19:24 -05:00
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
ns_cgroup.c	cgroup: notify ns_cgroup deprecated	2010-10-27 18:03:09 -07:00
nsproxy.c
padata.c
panic.c
params.c
perf_event.c	perf: Fix off by one in perf_swevent_init()	2010-12-16 11:14:31 +01:00
pid.c
pid_namespace.c
pm_qos_params.c	PM / PM QoS: Fix reversed min and max	2010-11-15 22:45:22 +01:00
posix-cpu-timers.c	posix-cpu-timers: Rcu_read_lock/unlock protect find_task_by_vpid call	2010-11-10 13:07:06 +01:00
posix-timers.c
printk.c	nohz: Fix printk_needs_cpu() return value on offline cpus	2010-11-26 15:03:12 +01:00
profile.c
ptrace.c	signals: move cred_guard_mutex from task_struct to signal_struct	2010-10-27 18:03:12 -07:00
range.c	kernel/range.c: fix clean_sort_range() for the case of full array	2010-11-12 07:55:31 -08:00
rcupdate.c
rcutiny.c
rcutiny_plugin.h
rcutorture.c
rcutree.c
rcutree.h
rcutree_plugin.h
rcutree_trace.c
relay.c	Clean up relay_alloc_page_array() slightly by using vzalloc rather than vmalloc and memset	2010-11-05 08:21:34 -07:00
res_counter.c
resource.c	resources: add arch hook for preventing allocation in reserved areas	2010-12-17 10:01:09 -08:00
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem.c
sched.c	sched: Remove debugging check	2010-12-19 23:24:27 +01:00
sched_clock.c
sched_cpupri.c
sched_cpupri.h
sched_debug.c
sched_fair.c	sched: Fix idle balancing	2010-11-18 13:12:33 +01:00
sched_features.h
sched_idletask.c
sched_rt.c
sched_stats.h	sched_stat: Update sched_info_queue/dequeue() code comments	2010-10-24 13:29:01 +02:00
sched_stoptask.c	sched: Fix cross-sched-class wakeup preemption	2010-11-11 14:37:23 +01:00
seccomp.c
semaphore.c
signal.c	signals: annotate lock context change on ptrace_stop()	2010-10-27 18:03:12 -07:00
smp.c	Typedef SMP call function pointer	2010-10-27 17:28:36 +01:00
softirq.c	Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-27 18:48:00 -07:00
spinlock.c
srcu.c
stacktrace.c
stop_machine.c	stop_machine: convert cpu notifier to return encapsulate errno value	2010-10-26 16:52:15 -07:00
sys.c
sys_ni.c
sysctl.c	kernel/sysctl.c: Fix build failure with !CONFIG_PRINTK	2010-11-16 07:56:09 -08:00
sysctl_binary.c
sysctl_check.c
taskstats.c	taskstats: pad taskstats netlink response for aligment issues on ia64	2010-12-22 19:43:34 -08:00
test_kprobes.c
time.c
timeconst.pl
timer.c	nohz: Fix get_next_timer_interrupt() vs cpu hotplug	2010-12-08 20:15:07 +01:00
tracepoint.c
tsacct.c	taskstats: use real microsecond granularity for CPU times	2010-10-27 18:03:17 -07:00
uid16.c
up.c
user-return-notifier.c
user.c	kernel/user.c: add lock release annotation on free_user()	2010-10-26 16:52:15 -07:00
user_namespace.c
utsname.c
utsname_sysctl.c
wait.c	docbook: add more wait/wake/completion to device-drivers docbook	2010-10-26 17:32:41 -07:00
watchdog.c	watchdog: Fix section mismatch and potential undefined behavior.	2010-11-05 17:45:35 -07:00
workqueue.c	workqueue: It is likely that WORKER_NOT_RUNNING is true	2010-12-14 15:05:54 +01:00
workqueue_sched.h