akpm@osdl.org ff60a5dc4f [PATCH] hrtimers: fix posix-timer requeue race ...

From: Steven Rostedtrostedt@goodmis.org <rostedt@goodmis.org>

CPU0 expires a posix-timer and runs the callback function.  The signal is
queued.

After releasing the posix-timer lock and before returning to hrtimer_run_queue
CPU0 gets interrupted.  CPU1 delivers the queued signal and rearms the timer.
CPU0 comes back to hrtimer_run_queue and sets the timer state to expired.

The next modification of the timer can result in an oops, because the state
information is wrong.

Keep track of state = RUNNING and check if the state has been in the return
path of hrtimer_run_queue.  In case the state has been changed, ignore a
restart request and do not touch the state variable.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2006-02-01 08:53:13 -08:00

..

irq

[PATCH] kernel/: small cleanups

2006-01-08 20:13:48 -08:00

power

[PATCH] swsusp: use bytes as image size units

2006-02-01 08:53:12 -08:00

.gitignore

gitignore: ignore more generated files

2006-01-03 11:35:26 +01:00

acct.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

audit.c

[PATCH] EDAC: atomic scrub operations

2006-01-18 19:20:30 -08:00

auditsc.c

[PATCH] EDAC: atomic scrub operations

2006-01-18 19:20:30 -08:00

capability.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

compat.c

[PATCH] Generic sys_rt_sigsuspend()

2006-01-18 19:20:29 -08:00

configs.c

update the email address of Randy Dunlap

2006-01-03 13:37:51 +01:00

cpu.c

[PATCH] clean up lock_cpu_hotplug() in cpufreq

2005-11-28 14:42:23 -08:00

cpuset.c

[PATCH] cpuset oom lock fix

2006-01-14 18:27:10 -08:00

dma.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

exec_domain.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

exit.c

[PATCH] Unlinline a bunch of other functions

2006-01-14 18:27:06 -08:00

extable.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

fork.c

[PATCH] x86_64: Inclusion of ScaleMP vSMP architecture patches - vsmp_align

2006-01-11 19:05:01 -08:00

futex.c

[PATCH] FRV: Make futex code compilable on nommu [try #2]

2006-01-06 08:33:33 -08:00

hrtimer.c

[PATCH] hrtimers: fix posix-timer requeue race

2006-02-01 08:53:13 -08:00

intermodule.c

[PATCH] introduce and use kzalloc

2005-09-07 16:57:45 -07:00

itimer.c

[PATCH] hrtimers: fix oldvalue return in setitimer

2006-02-01 08:53:12 -08:00

kallsyms.c

[PATCH] fix missing includes

2005-10-30 17:37:32 -08:00

Kconfig.hz

[PATCH] i386: Selectable Frequency of the Timer Interrupt

2005-06-23 09:45:10 -07:00

Kconfig.preempt

[PATCH] sched: voluntary kernel preemption

2005-06-25 16:24:45 -07:00

kexec.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

kfifo.c

[PATCH] gfp flags annotations - part 1

2005-10-08 15:00:57 -07:00

kmod.c

[PATCH] Keys: Get rid of warning in kmod.c if keys disabled

2005-10-30 17:37:23 -08:00

kprobes.c

[PATCH] kprobes: fix unloading of self probed module

2006-01-11 18:42:12 -08:00

ksysfs.c

[PATCH] kdump: export per cpu crash notes pointer through sysfs

2006-01-10 08:01:26 -08:00

kthread.c

[PATCH] Add kthread_stop_sem()

2005-10-30 17:37:17 -08:00

Makefile

[PATCH] build kernel/intermodule.c only when required

2006-01-16 23:15:26 -08:00

module.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

mutex-debug.c

[PATCH] fix/simplify mutex debugging code

2006-01-11 08:14:16 -08:00

mutex-debug.h

[PATCH] mutex subsystem, debugging code

2006-01-09 15:59:20 -08:00

mutex.c

[PATCH] mutex: trivial whitespace cleanups

2006-01-10 14:27:59 -08:00

mutex.h

[PATCH] mutex subsystem, core

2006-01-09 15:59:19 -08:00

panic.c

[PATCH] s390: cleanup Kconfig

2006-01-06 08:33:53 -08:00

params.c

[PATCH] kernel/params.c: fix sysfs access with CONFIG_MODULES=n

2005-12-20 10:31:33 -08:00

pid.c

[PATCH] RCU signal handling

2006-01-08 20:13:40 -08:00

posix-cpu-timers.c

[PATCH] hrtimer: switch clock_nanosleep to hrtimer nanosleep API

2006-01-10 08:01:38 -08:00

posix-timers.c

[PATCH] hrtimers: fix possible use of NULL pointer in posix-timers

2006-02-01 08:53:12 -08:00

printk.c

correct email address of Manfred Spraul

2006-01-15 02:43:54 +01:00

profile.c

[PATCH] mostly_read data section

2005-07-07 18:23:46 -07:00

ptrace.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

rcupdate.c

[PATCH] rcu: fix hotplug-cpu ->donelist leak

2006-01-10 08:49:47 -08:00

rcutorture.c

[PATCH] rcu_torture_lock deadlock fix

2006-01-31 11:30:18 -08:00

resource.c

[PATCH] kernel/resource.c: __check_region(): remove pointless __deprecated

2006-01-10 08:02:02 -08:00

sched.c

[PATCH] Fix boot-time slowdown for measure_migration_cost

2006-01-31 10:23:31 -08:00

seccomp.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

signal.c

[PATCH] Generic sys_rt_sigsuspend()

2006-01-18 19:20:29 -08:00

softirq.c

[PATCH] cpu hoptlug: avoid usage of smp_processor_id() in preemptible code

2005-11-07 07:53:29 -08:00

softlockup.c

[PATCH] quieten softlockup at boot

2005-11-09 07:55:50 -08:00

spinlock.c

[PATCH] spinlock consolidation

2005-09-10 10:06:21 -07:00

stop_machine.c

[PATCH] Remove set_fs() in stop_machine()

2006-01-10 08:01:25 -08:00

sys_ni.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge

2006-01-09 10:03:44 -08:00

sys.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

sysctl.c

[PATCH] Zone reclaim: proc override

2006-01-18 19:20:17 -08:00

time.c

Don't try to "validate" a non-existing timeval.

2006-01-31 10:16:55 -08:00

timer.c

[PATCH] hrtimer: switch sys_nanosleep to hrtimer

2006-01-10 08:01:38 -08:00

uid16.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

user.c

[PATCH] "Fix uidhash_lock <-> RXU deadlock" fix

2006-01-31 16:49:43 -08:00

wait.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

workqueue.c

[PATCH] Unlinline a bunch of other functions

2006-01-14 18:27:06 -08:00