Messages in this thread | | | Date | Wed, 6 Jan 2016 15:17:23 -0500 | From | Tejun Heo <> | Subject | Re: [tip:sched/core] sched/core: Fix unserialized r-m-w scribbling stuff |
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On Wed, Jan 06, 2016 at 10:48:15AM -0800, tip-bot for Peter Zijlstra wrote: > Commit-ID: be958bdc96f18bc1356177bbb79d46ea0c037b96 > Gitweb: http://git.kernel.org/tip/be958bdc96f18bc1356177bbb79d46ea0c037b96 > Author: Peter Zijlstra <peterz@infradead.org> > AuthorDate: Wed, 25 Nov 2015 16:02:07 +0100 > Committer: Ingo Molnar <mingo@kernel.org> > CommitDate: Wed, 6 Jan 2016 11:01:07 +0100 > > 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>
cc stable?
-- tejun
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