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Re: Fix sem_post race (bug 14532)
On Fri, 31 Aug 2012, Chris Metcalf wrote:
> On 8/30/2012 5:09 PM, Joseph S. Myers wrote:
> > Bug 14532 is a race condition in sem_post (generic C version), where
> > it wrongly uses an acquire barrier rather than a release barrier, so
> > wrongly allowing memory operations from before the unlock to be moved
> > after it.
> >
> > This patch fixes this in the obvious way and adds a testcase. Tested
> > mips64.
>
> This bug is also present on tilegx, and fixed by your patch.
Do you think the patch is OK, then? If so, I'll commit it.
--
Joseph S. Myers
joseph@codesourcery.com