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cc3c85dfa1a7e8d32c6e625176269f9dff88447d
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Mike Galbraith cc3c85dfa1 workqueue: exit rescuer_thread() as TASK_RUNNING 
commit 412d32e6c9 upstream.

A rescue thread exiting TASK_INTERRUPTIBLE can lead to a task scheduling
off, never to be seen again.  In the case where this occurred, an exiting
thread hit reiserfs homebrew conditional resched while holding a mutex,
bringing the box to its knees.

PID: 18105  TASK: ffff8807fd412180  CPU: 5   COMMAND: "kdmflush"
 #0 [ffff8808157e7670] schedule at ffffffff8143f489
 #1 [ffff8808157e77b8] reiserfs_get_block at ffffffffa038ab2d [reiserfs]
 #2 [ffff8808157e79a8] __block_write_begin at ffffffff8117fb14
 #3 [ffff8808157e7a98] reiserfs_write_begin at ffffffffa0388695 [reiserfs]
 #4 [ffff8808157e7ad8] generic_perform_write at ffffffff810ee9e2
 #5 [ffff8808157e7b58] generic_file_buffered_write at ffffffff810eeb41
 #6 [ffff8808157e7ba8] __generic_file_aio_write at ffffffff810f1a3a
 #7 [ffff8808157e7c58] generic_file_aio_write at ffffffff810f1c88
 #8 [ffff8808157e7cc8] do_sync_write at ffffffff8114f850
 #9 [ffff8808157e7dd8] do_acct_process at ffffffff810a268f
    [exception RIP: kernel_thread_helper]
    RIP: ffffffff8144a5c0  RSP: ffff8808157e7f58  RFLAGS: 00000202
    RAX: 0000000000000000  RBX: 0000000000000000  RCX: 0000000000000000
    RDX: 0000000000000000  RSI: ffffffff8107af60  RDI: ffff8803ee491d18
    RBP: 0000000000000000   R8: 0000000000000000   R9: 0000000000000000
    R10: 0000000000000000  R11: 0000000000000000  R12: 0000000000000000
    R13: 0000000000000000  R14: 0000000000000000  R15: 0000000000000000
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018

Signed-off-by: Mike Galbraith <mgalbraith@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-10 10:45:07 -08:00
..
debug
kgdb,debug_core: pass the breakpoint struct instead of address and memory
2012-04-13 08:14:07 -07:00
events
perf_event: Switch to internal refcount, fix race with close()
2012-10-02 09:47:24 -07:00
gcov
gcov: disable CONFIG_CONSTRUCTORS when not needed by CONFIG_GCOV_KERNEL
2011-06-15 20:04:01 -07:00
irq
random: remove rand_initialize_irq()
2012-08-15 12:04:28 -07:00
power
ftrace: Disable function tracing during suspend/resume and hibernation, again
2012-08-09 08:27:35 -07:00
time
time: Move ktime_t overflow checking into timespec_valid_strict
2012-10-02 09:47:52 -07:00
trace
tracing: change CPU ring buffer state from tracing_cpumask
2012-07-16 08:47:51 -07:00
.gitignore
…
acct.c
pass a struct path to vfs_statfs
2010-08-09 16:48:42 -04:00
async.c
Fix a dead loop in async_synchronize_full()
2012-10-02 09:47:41 -07:00
audit_tree.c
audit: fix refcounting in audit-tree
2012-09-14 10:00:38 -07:00
audit_watch.c
kill path_lookup()
2011-03-14 09:15:23 -04:00
audit.c
netlink: kill loginuid/sessionid/sid members from struct netlink_skb_parms
2011-03-03 10:55:40 -08:00
audit.h
audit: make functions static
2010-10-30 01:42:19 -04:00
auditfilter.c
netlink: kill loginuid/sessionid/sid members from struct netlink_skb_parms
2011-03-03 10:55:40 -08:00
auditsc.c
audit: acquire creds selectively to reduce atomic op overhead
2011-04-27 15:11:03 +02:00
backtracetest.c
…
bounds.c
memcg: remove direct page_cgroup-to-page pointer
2011-03-23 19:46:28 -07:00
capability.c
Merge branch 'master' into next
2011-05-19 18:51:57 +10:00
cgroup_freezer.c
cgroup_freezer: fix freezing groups with stopped tasks
2011-12-09 08:52:27 -08:00
cgroup.c
cgroup: notify_on_release may not be triggered in some cases
2012-10-28 10:02:12 -07:00
compat.c
compat: Fix RT signal mask corruption via sigprocmask
2012-05-21 09:40:04 -07:00
configs.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
cpu.c
PM / Sleep: Fix race between CPU hotplug and freezer
2012-01-12 11:35:46 -08:00
cpuset.c
CPU hotplug, cpusets, suspend: Don't modify cpusets during suspend/resume
2012-10-13 05:28:15 +09:00
crash_dump.c
crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn
2011-03-23 19:47:19 -07:00
cred.c
cred: copy_process() should clear child->replacement_session_keyring
2012-04-13 08:14:08 -07:00
delayacct.c
headers: taskstats_kern.h trim
2009-09-18 09:48:52 -07:00
dma.c
kernel/dma.c: remove a CVS keyword
2008-10-16 11:21:30 -07:00
elfcore.c
elf coredump: add extended numbering support
2010-03-06 11:26:46 -08:00
exec_domain.c
sys_personality: remove the bogus checks in sys_personality()->__set_personality() path
2010-08-09 20:45:05 -07:00
exit.c
sched: Fix ancient race in do_exit()
2012-10-02 09:47:55 -07:00
extable.c
extable, core_kernel_data(): Make sure all archs define _sdata
2011-05-20 08:56:56 +02:00
fork.c
cpuset: mm: reduce large amounts of memory barrier related damage v3
2012-08-01 12:27:20 -07:00
freezer.c
Freezer: Use SMP barriers
2011-05-17 23:19:17 +02:00
futex_compat.c
futex: Do not leak robust list to unprivileged process
2012-04-22 16:21:45 -07:00
futex.c
futex: avoid wake_futex() for a PI futex_q
2012-12-03 12:59:14 -08:00
groups.c
userns: user namespaces: convert several capable() calls
2011-03-23 19:47:08 -07:00
hrtimer.c
hrtimer: Update hrtimer base offsets each hrtimer_interrupt
2012-07-19 08:58:46 -07:00
hung_task.c
hung_task: fix false positive during vfork
2012-01-06 14:14:13 -08:00
irq_work.c
irq_work: Use per cpu atomics instead of regular atomics
2010-12-18 15:54:48 +01:00
itimer.c
itimers: Fix racy writes to cpu_itimer fields
2009-11-18 16:32:12 +01:00
jump_label.c
jump_label: jump_label_inc may return before the code is patched
2011-12-09 08:52:50 -08:00
kallsyms.c
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2011-03-25 17:52:22 -07:00
Kconfig.freezer
container freezer: implement freezer cgroup subsystem
2008-10-20 08:52:34 -07:00
Kconfig.hz
…
Kconfig.locks
arch:Kconfig.locks Remove unused config option.
2011-04-10 17:01:05 +02:00
Kconfig.preempt
rcu: provide RCU options on non-preempt architectures too
2008-12-25 09:31:28 +01:00
kexec.c
PM: Remove sysdev suspend, resume and shutdown operations
2011-05-11 21:37:15 +02:00
kfifo.c
kfifo: fix scatterlist usage
2010-10-01 10:50:58 -07:00
kmod.c
kmod: prevent kmod_loop_msg overflow in __request_module()
2011-11-11 09:35:48 -08:00
kprobes.c
kprobes: adjust "fix a memory leak in function pre_handler_kretprobe()"
2012-03-12 10:32:57 -07:00
ksysfs.c
kernel/ksysfs.c: expose file_caps_enabled in sysfs
2011-04-19 16:45:51 -07:00
kthread.c
cpuset: Fix cpuset_cpus_allowed_fallback(), don't update tsk->rt.nr_cpus_allowed
2011-05-28 17:02:57 +02:00
latencytop.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
lockdep_internals.h
lockdep: No need to disable preemption in debug atomic ops
2010-05-04 05:38:16 +02:00
lockdep_proc.c
lockdep: Remove unused 'factor' variable from lockdep_stats_show()
2011-03-23 13:54:47 +01:00
lockdep_states.h
lockdep: move state bit definitions around
2009-02-14 23:27:59 +01:00
lockdep.c
lockdep: Fix lock_is_held() on recursion
2011-06-07 12:25:50 +02:00
Makefile
cgroup: remove the ns_cgroup
2011-05-26 17:12:34 -07:00
module.c
module: taint kernel when lve module is loaded
2012-10-21 09:17:10 -07:00
mutex-debug.c
mutex: Use p->on_cpu for the adaptive spin
2011-04-14 08:52:33 +02:00
mutex-debug.h
mutex: Use p->on_cpu for the adaptive spin
2011-04-14 08:52:33 +02:00
mutex.c
lockdep, mutex: provide mutex_lock_nest_lock
2011-05-25 08:39:17 -07:00
mutex.h
mutex: Use p->on_cpu for the adaptive spin
2011-04-14 08:52:33 +02:00
notifier.c
sched: Use lockdep-based checking on rcu_dereference()
2010-02-25 10:34:26 +01:00
nsproxy.c
cgroup: remove the ns_cgroup
2011-05-26 17:12:34 -07:00
padata.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
panic.c
lockdep, bug: Exclude TAINT_FIRMWARE_WORKAROUND from disabling lockdep
2012-02-13 11:06:10 -08:00
params.c
params.c: Use new strtobool function to process boolean inputs
2011-05-19 16:55:28 +09:30
pid_namespace.c
pidns: call pid_ns_prepare_proc() from create_pid_namespace()
2011-03-23 19:46:58 -07:00
pid.c
next_pidmap: fix overflow condition
2011-04-18 10:35:30 -07:00
pm_qos_params.c
Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6
2011-05-29 11:18:09 -07:00
posix-cpu-timers.c
cputimer: Cure lock inversion
2011-10-25 07:10:14 +02:00
posix-timers.c
posix-timers: RCU conversion
2011-05-24 12:10:51 +02:00
printk.c
cap_syslog: don't use WARN_ONCE for CAP_SYS_ADMIN deprecation warning
2012-02-03 09:18:57 -08:00
profile.c
kernel/profile.c: remove some duplicate code from profile_hits()
2011-05-26 17:12:37 -07:00
ptrace.c
ptrace: ptrace_resume() shouldn't wake up !TASK_TRACED thread
2011-05-25 19:20:21 +02:00
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
rcu: Use WARN_ON_ONCE for DEBUG_OBJECTS_RCU_HEAD warnings
2011-05-05 23:16:57 -07:00
rcutiny_plugin.h
rcu: Converge TINY_RCU expedited and normal boosting
2011-05-05 23:16:58 -07:00
rcutiny.c
sanitize <linux/prefetch.h> usage
2011-05-20 12:50:29 -07:00
rcutorture.c
rcu: mark rcutorture boosting callback as being on-stack
2011-05-05 23:16:57 -07:00
rcutree_plugin.h
softirq,rcu: Inform RCU of irq_exit() activity
2011-07-20 10:50:12 -07:00
rcutree_trace.c
rcu: use softirq instead of kthreads except when RCU_BOOST=y
2011-06-15 23:07:21 -07:00
rcutree.c
rcu: Fix day-one dyntick-idle stall-warning bug
2012-10-13 05:28:11 +09:00
rcutree.h
rcu: Move RCU_BOOST #ifdefs to header file
2011-06-16 16:12:05 -07:00
relay.c
relay: prevent integer overflow in relay_open()
2012-02-20 12:48:10 -08:00
res_counter.c
memcg: res_counter_read_u64(): fix potential races on 32-bit machines
2011-03-23 19:46:22 -07:00
resource.c
Resource: fix wrong resource window calculation
2012-11-26 11:34:58 -08:00
rtmutex_common.h
rtmutex: Simplify PI algorithm and make highest prio task get lock
2011-01-27 21:13:51 -05:00
rtmutex-debug.c
rtmutex: Simplify PI algorithm and make highest prio task get lock
2011-01-27 21:13:51 -05:00
rtmutex-debug.h
…
rtmutex-tester.c
rtmutex: tester: Remove the remaining BKL leftovers
2011-02-22 22:07:22 +01:00
rtmutex.c
rtmutex: Simplify PI algorithm and make highest prio task get lock
2011-01-27 21:13:51 -05:00
rtmutex.h
…
rwsem.c
…
sched_autogroup.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
sched_autogroup.h
sched, autogroup: Stop going ahead if autogroup is disabled
2011-02-23 11:33:59 +01:00
sched_clock.c
sched: Add some clock info to sched_debug
2010-11-23 10:29:08 +01:00
sched_cpupri.c
sched: No need for bootmem special cases
2010-07-17 12:06:22 +02:00
sched_cpupri.h
sched: No need for bootmem special cases
2010-07-17 12:06:22 +02:00
sched_debug.c
sched: Get rid of lock_depth
2011-04-24 13:18:38 +02:00
sched_fair.c
sched: Break out cpu_power from the sched_group structure
2011-07-20 18:32:40 +02:00
sched_features.h
sched: Allow for overlapping sched_domain spans
2011-07-20 18:32:41 +02:00
sched_idletask.c
sched: Drop the rq argument to sched_class::select_task_rq()
2011-04-14 08:52:36 +02:00
sched_rt.c
sched/rt: Fix task stack corruption under __ARCH_WANT_INTERRUPTS_ON_CTXSW
2012-02-13 11:06:08 -08:00
sched_stats.h
sched: More sched_domain iterations fixes
2011-05-28 17:02:54 +02:00
sched_stoptask.c
sched: Drop the rq argument to sched_class::select_task_rq()
2011-04-14 08:52:36 +02:00
sched.c
CPU hotplug, cpusets, suspend: Don't modify cpusets during suspend/resume
2012-10-13 05:28:15 +09:00
seccomp.c
x86-64: seccomp: fix 32/64 syscall hole
2009-03-02 15:41:30 -08:00
semaphore.c
…
signal.c
ptrace: don't clear GROUP_STOP_SIGMASK on double-stop
2011-11-11 09:36:23 -08:00
smp.c
generic-ipi: Fix kexec boot crash by initializing call_single_queue before enabling interrupts
2011-06-17 10:17:12 +02:00
softirq.c
softirq,rcu: Inform RCU of irq_exit() activity
2011-07-20 10:50:12 -07:00
spinlock.c
locking: Cleanup the name space completely
2009-12-14 23:55:33 +01:00
srcu.c
rcu: demote SRCU_SYNCHRONIZE_DELAY from kernel-parameter status
2011-01-14 04:56:49 -08:00
stacktrace.c
stacktrace: provide save_stack_trace_tsk() weak alias
2008-12-25 11:44:43 +01:00
stop_machine.c
x86, mtrr: lock stop machine during MTRR rendezvous sequence
2011-08-29 13:29:08 -07:00
sys_ni.c
ipc: Add missing sys_ni entries for ipc/compat.c functions
2011-05-20 13:53:02 -07:00
sys.c
use clamp_t in UNAME26 fix
2012-10-28 10:02:11 -07:00
sysctl_binary.c
binary_sysctl(): fix memory leak
2012-01-06 14:13:50 -08:00
sysctl_check.c
sysctl_check: drop dead code
2011-03-23 19:46:51 -07:00
sysctl.c
sysctl: fix write access to dmesg_restrict/kptr_restrict
2012-04-13 08:14:07 -07:00
taskstats.c
Make TASKSTATS require root access
2011-12-21 12:57:40 -08:00
test_kprobes.c
kprobes: Fix selftest to clear flags field for reusing probes
2010-10-14 08:55:27 +02:00
time.c
time: Change jiffies_to_clock_t() argument type to unsigned long
2011-11-11 09:35:52 -08:00
timeconst.pl
…
timer.c
timers: Fix endless looping between cascade() and internal_add_timer()
2012-10-21 09:17:10 -07:00
tracepoint.c
jump label: Introduce static_branch() interface
2011-04-04 12:48:08 -04:00
tsacct.c
taskstats: use real microsecond granularity for CPU times
2010-10-27 18:03:17 -07:00
uid16.c
userns: user namespaces: convert several capable() calls
2011-03-23 19:47:08 -07:00
up.c
smp_call_function_single(): be slightly less stupid, fix #2
2009-01-12 16:04:37 +01:00
user_namespace.c
user_ns: improve the user_ns on-the-slab packaging
2011-01-13 08:03:18 -08:00
user-return-notifier.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
user.c
userns: add a user_namespace as creator/owner of uts_namespace
2011-03-23 19:46:59 -07:00
utsname_sysctl.c
sysctl kernel: Remove binary sysctl logic
2009-11-12 02:04:55 -08:00
utsname.c
ns proc: Add support for the uts namespace
2011-05-10 14:35:35 -07:00
wait.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
watchdog.c
watchdog: using u64 in get_sample_period()
2012-12-03 12:59:15 -08:00
workqueue_sched.h
workqueue: implement concurrency managed dynamic worker pool
2010-06-29 10:07:14 +02:00
workqueue.c
workqueue: exit rescuer_thread() as TASK_RUNNING
2012-12-10 10:45:07 -08:00