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Hi Thomas, On 20/05/07, Thomas Gleixner <tglx@linutronix.de> wrote: > On Sun, 2007-05-20 at 02:53 +0530, Anant Nitya wrote: > > > 1 == TASK_INTERRUPTIBLE, so we know that ksoftirqd was not woken up. At > > > least it is not a scheduler problem. > > > > > > I work out a more complex debug patch and pester you to test once I'm > > > done. > > No problem :) > > You asked for it :) > > Please patch 2.6.22-rc2 with > > http://tglx.de/projects/hrtimers/2.6.22-rc2/patch-2.6.22-rc2-hrt2.patch > and > http://www.tglx.de/private/tglx/ht-debug/tracer.diff > > Compile it with the config > > http://www.tglx.de/private/tglx/ht-debug/config.debug > > You should find something like: > > ( swapper-0 |#0): new 67173 us user-latency. > > along with the familiar "NOHZ ......" message in your log file. > > Once that happened please do: > > $ cat /proc/latency_trace >trace.txt > > compress it and send it to me along with the full dmesg output or put > both up to some place, where I can download it. > > Michal, > > IIRC you encountered the same P4/HT related wreckage. Can you do the > same ? Good news - I can't reproduce this bug. It's time to remove "Subject : 2.6.21-git4 BUG: soft lockup detected on CPU#1! References : http://lkml.org/lkml/2007/5/2/511 Submitter : Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Handled-By : Thomas Gleixner <tglx@linutronix.de> Status : problem is being debugged" from KR. Bad news - I hit a bug in 2.6.22-rc2-hrt3. Bug symptoms: - X hangs (keyboard, mouse, sound etc.) - only Magic SysRq works http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.22-rc2-hrt3/hrt-config http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.22-rc2-hrt3/hrt-console.log Now I'm trying to apply hrtimers debug patch ontop 2.6.22-rc2-hrt3 http://lkml.org/lkml/2007/3/23/106 Regards, Michal -- Michal K. K. Piotrowski Kernel Monkeys (http://kernel.wikidot.com/start) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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