Oleg Nesterov a90e984c8a sched_show_task: fix unsafe usage of ->real_parent ...

rcu_read_lock() can not protect p->real_parent if release_task(p) was
already called, change sched_show_task() to check pis_alive() like other
users do.

Note: we need some helpers to cleanup the code like this.  And it seems
that that the usage of cpu_curr(cpu) in dump_cpu_task() is not safe too.

Signed-off-by: Oleg Nesterov <[email protected]>
Cc: Aaron Tomlin <[email protected]>
Cc: Alexey Dobriyan <[email protected]>
Cc: "Eric W. Biederman" <[email protected]>,
Cc: Sterling Alexander <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Roland McGrath <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

2014-12-10 17:41:09 -08:00

..

auto_group.c

…

auto_group.h

…

clock.c

…

completion.c

sched/completion: Document when to use wait_for_completion_io_*()

2014-11-16 10:58:54 +01:00

core.c

sched_show_task: fix unsafe usage of ->real_parent

2014-12-10 17:41:09 -08:00

cpuacct.c

…

cpuacct.h

…

cpudeadline.c

sched/deadline: Fix inter- exclusive cpusets migrations

2014-09-24 14:46:57 +02:00

cpudeadline.h

sched/deadline: Remove unnecessary definitions in cpudeadline.h

2014-11-16 10:59:00 +01:00

cpupri.c

…

cpupri.h

sched/cpupri: Remove unnecessary definitions in cpupri.h

2014-11-16 10:58:59 +01:00

cputime.c

sched, time: Fix build error with 64 bit cputime_t on 32 bit systems

2014-10-03 05:46:55 +02:00

deadline.c

sched/deadline: Introduce start_hrtick_dl() for !CONFIG_SCHED_HRTICK

2014-11-16 10:59:03 +01:00

debug.c

sched: Refactor task_struct to use numa_faults instead of numa_* pointers

2014-11-04 07:17:57 +01:00

fair.c

sched/fair: Fix stale overloaded status in the busiest group finding logic

2014-11-16 10:58:56 +01:00

features.h

…

idle_task.c

sched: Provide update_curr callbacks for stop/idle scheduling classes

2014-11-23 14:14:40 -08:00

idle.c

sched: Let the scheduler see CPU idle states

2014-09-24 14:46:58 +02:00

Makefile

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proc.c

…

rt.c

sched: Move p->nr_cpus_allowed check to select_task_rq()

2014-11-16 10:58:55 +01:00

sched.h

Merge branch 'sched/urgent' into sched/core, to pick up fixes before applying more changes

2014-11-16 10:50:25 +01:00

stats.c

…

stats.h

…

stop_task.c

sched: Provide update_curr callbacks for stop/idle scheduling classes

2014-11-23 14:14:40 -08:00

wait.c

sched/wait: Fix a kthread race with wait_woken()

2014-11-04 07:17:44 +01:00