Date: Thu, 16 Mar 2006 12:45:07 -0600 From: "Jason Harmening" <jason.harmening@gmail.com> To: freebsd-stable@freebsd.org, freebsd-bugs@freebsd.org Subject: [6.1-PRERELEASE/amd64] Kernel panic during heavy UFS traffic Message-ID: <2d1264630603161045t31774a33h9cec88c4b7d6d13d@mail.gmail.com>
next in thread | raw e-mail | index | archive | help
Last night I ran into a series of kernel panics that seemed to be related t= o 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 soli= d 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. Thanks, Jason Harmening
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?2d1264630603161045t31774a33h9cec88c4b7d6d13d>