Messages in this thread | | | Subject | Re: [PATCH] avoid race condition in pick_next_task_fair in kernel/sched_fair.c | From | Peter Zijlstra <> | Date | Wed, 22 Dec 2010 18:25:20 +0100 |
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On Wed, 2010-12-22 at 18:16 +0100, Ingo Molnar wrote: > * Peter Zijlstra <peterz@infradead.org> wrote: > > > On Wed, 2010-12-22 at 16:14 +0100, Miklos Vajna wrote: > > > kernel-build is a git build using the config I already sent and after a > > > 'git checkout v2.6.36'. I can try to build master as well, so far what I > > > saw is that the bug occurs there as well, but less frequently, so maybe > > > that's a bit harder to debug. > > > > Right, so I've got v2.6.36 exploding, current -git and -tip won't > > explode for me, tried both about 20 times. So I'll try and figure out > > wth makes .36 explode and then see if further kernel still suffer that > > problem. > > Does it explode if you change some of the CONFIG_CC flags, such as > CONFIG_CC_OPTIMIZE_FOR_SIZE? I.e. is the crash dependent on the precise kernel image > layout perhaps? If it's sensitive to that then this might keep you from chasing > shadows ...
I've since changed the .config slightly (enabled frame pointers, added debug info, enabled the function tracer) and its still exploding. Also, I suspect Miklos and me have different gcc versions.
So I suspect its really something weird, I just can't really make sense of it yet.
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