On Wed, 2014-07-16 at 12:24 -0700, tip-bot for Peter Zijlstra wrote: > Commit-ID: 4badad352a6bb202ec68afa7a574c0bb961e5ebc > Gitweb: http://git.kernel.org/tip/4badad352a6bb202ec68afa7a574c0bb961e5ebc > Author: Peter Zijlstra <[email protected]> > AuthorDate: Fri, 6 Jun 2014 19:53:16 +0200 > Committer: Ingo Molnar <[email protected]> > CommitDate: Wed, 16 Jul 2014 14:57:07 +0200 > > locking/mutex: Disable optimistic spinning on some architectures > > The optimistic spin code assumes regular stores and cmpxchg() play nice; > this is found to not be true for at least: parisc, sparc32, tile32, > metag-lock1, arc-!llsc and hexagon. > > There is further wreckage, but this in particular seemed easy to > trigger, so blacklist this. > > Opt in for known good archs. > > Signed-off-by: Peter Zijlstra <[email protected]> > Reported-by: Mikulas Patocka <[email protected]> > Cc: David Miller <[email protected]> > Cc: Chris Metcalf <[email protected]> > Cc: James Bottomley <[email protected]> > Cc: Vineet Gupta <[email protected]> > Cc: Jason Low <[email protected]> > Cc: Waiman Long <[email protected]> > Cc: "James E.J. Bottomley" <[email protected]> > Cc: Paul McKenney <[email protected]> > Cc: John David Anglin <[email protected]> > Cc: James Hogan <[email protected]> > Cc: Linus Torvalds <[email protected]> > Cc: Davidlohr Bueso <[email protected]> > Cc: [email protected] > Cc: Benjamin Herrenschmidt <[email protected]> > Cc: Catalin Marinas <[email protected]> > Cc: Russell King <[email protected]> > Cc: Will Deacon <[email protected]> > Cc: [email protected] > Cc: [email protected] > Cc: [email protected] > Cc: [email protected] > Link: > http://lkml.kernel.org/r/[email protected] > Signed-off-by: Ingo Molnar <[email protected]>
Cc'ing stable: this issue was reported to begin after commit fb0527bd, so since v3.13. Thanks, Davidlohr -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
