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Date: Thu, 05 Jul 2007 19:12:45 -0400 From: Ernie Petrides <petrides@...hat.com> To: Chris Friesen <cfriesen@...tel.com> cc: Thomas Gleixner <tglx@...utronix.de>, Clemens Koller <clemens.koller@...gramm.de>, Chris Wright <chrisw@...s-sol.org>, Uli Luckas <u.luckas@...d.de>, LKML <linux-kernel@...r.kernel.org> Subject: Re: 2.6.21.5 june 30th to july 1st date hang? On Thursday, 5-Jul-2007 at 16:49 MDT, Chris Friesen wrote: > Ernie Petrides wrote: > > > Only kernels built with the CONFIG_HIGH_RES_TIMERS option enabled were > > vulnerable. > > As I mentioned in my post to Thomas, we have high res timers disabled > and were still affected. Granted, our kernel has been modified so it is > possible that vanilla would not be affected....I haven't tested it. > > Chris That's odd, because Thomas's patch removed two calls to clock_was_set(), which is a no-op when CONFIG_HIGH_RES_TIMERS is not enabled (at least in the 2.6.21 source tree). Also, I personally tested with the reproducer you posted here, initially on a box running 2.6.22-rc4, and there were no problems (but I'm not sure what config options were enabled on that kernel). I did reproduce the problem on a stock 2.6.21 kernel with CONFIG_HIGH_RES_TIMERS enabled. Cheers. -ernie - 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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