On Thu, Mar 16, 2006 at 12:45:07PM -0600, Jason Harmening wrote: > Last night I ran into a series of kernel panics that seemed to be related to > heavy UFS traffic. I ran into two consecutive panics when trying to mount a > UFS-formatted DVD-RAM as a regular user (though not when I mounted it as > root). The system seemed to actually succeed in mounting the disk, as it > was marked dirty after the ensuing panic. Upon rebooting after the second > panic, I saw another two consecutive panics which happened whenever I tried > to do something fairly disk-intensive (e.g. starting the X server + KDE) > while the bgfsck was still running from the last panic. Ultimately I > rebooted in single-user mode, ran fsck manually, and have experienced no > further panics. I suspect these panics may be related to UFS deadlocks, as > in all cases the application that was attempting disk access hung for > several seconds before the panic, followed by a few seconds of total system > hang, followed by the automatic reboot. > > I'm running 6.1-PRELEASE/amd64 from 12 March on an Athlon 64 x2 (SMP) with > SCHED_ULE+PREEMPTION--dangerous combination I know, but it's been rock solid > for months until now. If anyone is interested, I'll try to reproduce this > panic with a dump/backtrace. It may be one of the UFS deadlock issues > that's already under investigation for 6.1-RELEASE.
Yeah, we need a trace. Kris
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