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Open Source and information security mailing list archives
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Date: Tue, 01 May 2007 12:52:37 -0400 From: Mark Lord <lkml@....ca> To: tglx@...utronix.de Cc: Daniel Walker <dwalker@...sta.com>, Linux Kernel <linux-kernel@...r.kernel.org>, Linus Torvalds <torvalds@...l.org> Subject: Re: [BUG] 2.6.21: Kernel won't boot with either/both of CONFIG_NO_HZ, CONFIG_HIGH_RES_TIMERS Thomas Gleixner wrote: > On Tue, 2007-05-01 at 10:13 -0400, Mark Lord wrote: >> Of possible interest is that the bottom of the 25line screen capture >> differs somewhat from the 50line capture.. see for yourself. >> This is 100% consistent from boot to boot. >> >> Using CONFIG_DETECT_SOFTLOCKUP=y eliminates the problem, >> so that's really got to be a huge clue, somehow ? > > I twisted my brain, why the watchdog thread might change the problem and > I think I have a rough idea of the scenario. > > Can you apply the following patch, which prints out the CPU on which the > kernel messages are generated and upload the screenshot when the hang > happens ? Oh, please enable CONFIG_PRINTK_TIME or add "time" to the > kernel commandline. Done, and done. And I managed to capture more of the boot messages, too. This new capture is in the "sequence" subdir at the previous link. Cheers - 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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