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Date: Wed, 4 May 2011 12:13:27 +0200 From: Ingo Molnar <mingo@...e.hu> To: Linus Torvalds <torvalds@...ux-foundation.org>, Jens Axboe <axboe@...nel.dk>, Andrew Morton <akpm@...ux-foundation.org> Cc: werner <w.landgraf@...ru>, "H. Peter Anvin" <hpa@...or.com>, Thomas Gleixner <tglx@...utronix.de>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [block IO crash] Re: 2.6.39-rc5-git2 boot crashs * Ingo Molnar <mingo@...e.hu> wrote: > I've built a CONFIG_DEBUG_PAGEALLOC=y and CONFIG_SLUB_DEBUG=y kernel, maybe the > crash triggers in a more revealing way. After an hour of testing it still has not triggered. This could have multiple reasons: - Maybe i reproduced the original crash by pure luck. To exclude this i'll re-test once again with the non-debug .config. - There's some kernel image layout dependency that twiddling these options has hidden. This is the lowest probability explanation, because the problem triggered for me after tweaking the original .config and using a different toolchain. - These debug options could have narrowed the race window and could make the race much less likely to occur. This is the highest probability explanation. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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