Date: Wed, 27 Jul 2011 11:05:13 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Tim Newsham <tim.newsham+fbsd@gmail.com> Cc: freebsd-amd64@FreeBSD.org Subject: Re: page fault in kernel Message-ID: <4E2FC6B9.7000803@FreeBSD.org> In-Reply-To: <CAGSRWbibOcLKUOrLFx-K5ftnfO1pkTyNew5kGMdgrJ8suyU8DQ@mail.gmail.com> References: <CAGSRWbibOcLKUOrLFx-K5ftnfO1pkTyNew5kGMdgrJ8suyU8DQ@mail.gmail.com>
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on 27/07/2011 09:39 Tim Newsham said the following: > I have an amd64 box that is occasionally panic'ing with a kernel > page fault while the system is under heavy load. My personal philosophy is that it is better to gather objective data before making any speculations: http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html > I tried swapping > out ram and running ram tests and that hasn't seem to turn up > anything. I originally saw this with 8.1 but I recently updated to > 8.2 to be sure and I'm still seeing the problem. I'm up to date > with "freebsd-update" and I verified that the core files all match > the md5 of a clean 8.2 release (after it is also updated). I also > tried to disable various frills I had installed (like ip6 tunnel). > > The normal way I repro this issue is to start a "portupgrade -caP" > going and I usually get a crash within a few hours. Sometimes > I see some unusual behavior instead of or right before a crash > (ie. program segfaults that shouldn't normally). > > Are there any known kernel issues that sound similar to this > problem? I've been working under the assumption that this is > probably hardware related, but I haven't yet ruled out software. > > I'll probably be trying some tests with cpuburn. Any other advice > for tracking down this issue would be appreciated. -- Andriy Gapon
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