diff options
| author |   Peter Zijlstra <peterz@infradead.org> | 2015-11-25 16:02:07 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-01-06 11:01:07 +0100 |
| commit | be958bdc96f18bc1356177bbb79d46ea0c037b96 (patch) | |
| tree | dea9e48ddcca9e6fb5d244485a900bfa5b1391f6 /kernel/fork.c | |
| parent | sched/core: Check tgid in is_global_init() (diff) | |
| download | linux-dev-be958bdc96f18bc1356177bbb79d46ea0c037b96.tar.xz linux-dev-be958bdc96f18bc1356177bbb79d46ea0c037b96.zip | |
sched/core: Fix unserialized r-m-w scribbling stuff
Some of the sched bitfieds (notably sched_reset_on_fork) can be set
on other than current, this can cause the r-m-w to race with other
updates.
Since all the sched bits are serialized by scheduler locks, pull them
in a separate word.
Reported-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: akpm@linux-foundation.org
Cc: hannes@cmpxchg.org
Cc: mhocko@kernel.org
Cc: vdavydov@parallels.com
Link: http://lkml.kernel.org/r/20151125150207.GM11639@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/fork.c')
0 files changed, 0 insertions, 0 deletions