Date: Tue, 22 May 2012 16:41:13 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-current@freebsd.org Cc: Ian FREISLICH <ianf@clue.co.za> Subject: Re: panic in vfs_lookup/kern_statat_vnhook? Message-ID: <201205221641.13091.jhb@freebsd.org> In-Reply-To: <E1SWtwE-0000Ru-Eu@clue.co.za> References: <E1SWtwE-0000Ru-Eu@clue.co.za>
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On Tuesday, May 22, 2012 2:36:06 pm Ian FREISLICH wrote: > Hi > > I've had quite a few reproduceable panics that look to be VFS > related. The trigger is relatively heavy concurrent disk IO. > I can trigger it easily two ways: > > 1. running my backup script which essentially does: > cd /; rsync --one-file-system --delete -aHv . /backup > cd /tmp; rsync --one-file-system --delete -aHv . /backup/tmp > cd /usr; rsync --one-file-system --delete -aHv . /backup/usr > cd /var; rsync --one-file-system --delete -aHv . /backup/var > > 2. While updating with cvsup or csup, launch firefox. > > Both reliably provoke the panic: > > #0 doadump (textdump=1) at pcpu.h:244 > #1 0xc06aa895 in kern_reboot (howto=260) > at /usr/src/sys/kern/kern_shutdown.c:454 > #2 0xc06aad36 in panic (fmt=Variable "fmt" is not available. > ) at /usr/src/sys/kern/kern_shutdown.c:642 > #3 0xc087adee in trap_fatal (frame=0xedb365c8, eva=28) > at /usr/src/sys/i386/i386/trap.c:1022 > #4 0xc087aed8 in trap_pfault (frame=0xedb365c8, usermode=0, eva=28) > at /usr/src/sys/i386/i386/trap.c:875 > #5 0xc087bc4d in trap (frame=0xedb365c8) at /usr/src/sys/i386/i386/trap.c:546 > #6 0xc086687c in calltrap () at /usr/src/sys/i386/i386/exception.s:169 > #7 0xc0878682 in pmap_enter (pmap=0xc09e4060, va=3359633408, access=7 '\a', > m=0xc3073f70, prot=7 '\a', wired=1) at /usr/src/sys/i386/i386/pmap.c:1596 This is the actual panic. Can you go to this frame? The VFS bits don't matter, the pmap code blew up trying to malloc another vnode. > This same panic was reported some time back in: > Subject: [panic] zfs_zget() panic during 'svn update' > From: Glen Barber <gjb@FreeBSD.org> > Date: Thu, 17 May 2012 16:18:51 -0400 > To: freebsd-current@FreeBSD.org > > http://people.freebsd.org/~gjb/zfs_zget-panic.kgdb.txt This is a completely different and (AFAICT) unrelated panic. -- John Baldwin
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