Oleg Nesterov 36aa9dfc39 workqueue: don't clear cwq->thread until it exits ...

Pointed out by Srivatsa Vaddagiri.

cleanup_workqueue_thread() sets cwq->thread = NULL and does kthread_stop().
This breaks the "if (cwq->thread == current)" logic in flush_cpu_workqueue()
and leads to deadlock.

Kill the thead first, then clear cwq->thread. workqueue_mutex protects us
from create_workqueue_thread() so we don't need cwq->lock.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com>
Cc: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
Cc: Gautham shenoy <ego@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2007-05-09 12:30:52 -07:00

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irq

Fix Linuxdoc comment

2007-05-09 12:30:48 -07:00

power

PM: Separate hibernation code from suspend code

2007-05-09 12:30:48 -07:00

time

Fix printk format warnings in timer_list.c

2007-05-09 12:30:50 -07:00

.gitignore

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acct.c

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audit.c

audit: add spaces on either side of case "..." operator.

2007-05-08 11:15:09 -07:00

audit.h

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auditfilter.c

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auditsc.c

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capability.c

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compat.c

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configs.c

use simple_read_from_buffer in kernel/

2007-05-09 12:30:49 -07:00

cpu.c

call cpu_chain with CPU_DOWN_FAILED if CPU_DOWN_PREPARE failed

2007-05-09 12:30:51 -07:00

cpuset.c

use simple_read_from_buffer in kernel/

2007-05-09 12:30:49 -07:00

delayacct.c

KMEM_CACHE(): simplify slab cache creation

2007-05-07 12:12:55 -07:00

die_notifier.c

move die notifier handling to common code

2007-05-08 11:15:04 -07:00

dma.c

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exec_domain.c

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exit.c

header cleaning: don't include smp_lock.h when not used

2007-05-08 11:15:07 -07:00

extable.c

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fork.c

header cleaning: don't include smp_lock.h when not used

2007-05-08 11:15:07 -07:00

futex_compat.c

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futex.c

futex: restartable futex_wait

2007-05-08 11:15:03 -07:00

hrtimer.c

export hrtimer_forward

2007-05-08 11:15:15 -07:00

itimer.c

The scheduled -EINVAL for invalid timevals in setitimer

2007-05-08 11:15:13 -07:00

kallsyms.c

kallsyms: cleanup: use seq_release_private() where appropriate

2007-05-08 11:15:09 -07:00

Kconfig.hz

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Kconfig.preempt

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kexec.c

kdump/kexec: calculate note size at compile time

2007-05-08 11:15:07 -07:00

kfifo.c

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kmod.c

Fix kevent's childs priority greediness

2007-05-08 11:15:07 -07:00

kprobes.c

Kprobes: The ON/OFF knob thru debugfs

2007-05-08 11:15:19 -07:00

ksysfs.c

remove "struct subsystem" as it is no longer needed

2007-05-02 18:57:59 -07:00

kthread.c

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latency.c

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lockdep_internals.h

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lockdep_proc.c

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lockdep.c

lockdep: removed unused ip argument in mark_lock & mark_held_locks

2007-05-08 11:15:13 -07:00

Makefile

move die notifier handling to common code

2007-05-08 11:15:04 -07:00

module.c

Fix race between cat /proc/slab_allocators and rmmod

2007-05-08 11:15:08 -07:00

mutex-debug.c

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mutex-debug.h

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mutex.c

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mutex.h

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nsproxy.c

Merge sys_clone()/sys_unshare() nsproxy and namespace handling

2007-05-08 11:15:00 -07:00

panic.c

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params.c

kernel/params.c: fix lying comment for param_array()

2007-05-08 11:15:08 -07:00

pid.c

Merge sys_clone()/sys_unshare() nsproxy and namespace handling

2007-05-08 11:15:00 -07:00

posix-cpu-timers.c

Introduce a handy list_first_entry macro

2007-05-08 11:15:11 -07:00

posix-timers.c

header cleaning: don't include smp_lock.h when not used

2007-05-08 11:15:07 -07:00

printk.c

header cleaning: don't include smp_lock.h when not used

2007-05-08 11:15:07 -07:00

profile.c

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ptrace.c

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rcupdate.c

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rcutorture.c

rcutorture: Remove redundant assignment to cur_ops in for loop

2007-05-08 11:15:17 -07:00

relay.c

relay: use plain timer instead of delayed work

2007-05-09 12:30:51 -07:00

resource.c

libata/IDE: remove combined mode quirk

2007-04-28 14:15:59 -04:00

rtmutex_common.h

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rtmutex-debug.c

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rtmutex-debug.h

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rtmutex-tester.c

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rtmutex.c

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rtmutex.h

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rwsem.c

Lockdep treats down_write_trylock like regular down_write

2007-05-08 11:15:09 -07:00

sched.c

Eliminate lock_cpu_hotplug in kernel/schedc

2007-05-09 12:30:51 -07:00

seccomp.c

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signal.c

Move sig_kernel_* et al macros to linux/signal.h

2007-05-09 12:30:49 -07:00

softirq.c

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softlockup.c

add touch_all_softlockup_watchdogs()

2007-05-08 11:15:06 -07:00

spinlock.c

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srcu.c

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stacktrace.c

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stop_machine.c

Use stop_machine_run in the Intel RNG driver

2007-05-08 11:15:00 -07:00

sys_ni.c

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sys.c

Extend notifier_call_chain to count nr_calls made

2007-05-09 12:30:51 -07:00

sysctl.c

proc: maps protection

2007-05-08 11:15:02 -07:00

taskstats.c

KMEM_CACHE(): simplify slab cache creation

2007-05-07 12:12:55 -07:00

time.c

header cleaning: don't include smp_lock.h when not used

2007-05-08 11:15:07 -07:00

timer.c

Introduce a handy list_first_entry macro

2007-05-08 11:15:11 -07:00

tsacct.c

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uid16.c

header cleaning: don't include smp_lock.h when not used

2007-05-08 11:15:07 -07:00

user.c

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utsname_sysctl.c

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utsname.c

Merge sys_clone()/sys_unshare() nsproxy and namespace handling

2007-05-08 11:15:00 -07:00

wait.c

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workqueue.c

workqueue: don't clear cwq->thread until it exits

2007-05-09 12:30:52 -07:00