Date: Mon, 23 Feb 2009 12:00:08 GMT From: "Bjoern A. Zeeb" <bzeeb+freebsd+lor@zabbadoz.net> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/131784: triple LOR after hard reboot Message-ID: <200902231200.n1NC08aV000871@freefall.freebsd.org>
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The following reply was made to PR kern/131784; it has been noted by GNATS. From: "Bjoern A. Zeeb" <bzeeb+freebsd+lor@zabbadoz.net> To: Dirk Meyer <dm@home3.dinoex.sub.de> Cc: bug-followup@FreeBSD.org, Daan Vreeken <Daan@vehosting.nl> Subject: Re: kern/131784: triple LOR after hard reboot Date: Mon, 23 Feb 2009 11:46:48 +0000 (UTC) On Tue, 17 Feb 2009, Dirk Meyer wrote: See http://sources.zabbadoz.net/freebsd/lor.html > lock order reversal: > 1st 0xffffff0003a2d7f8 ufs (ufs) @ /usr/src/sys/ufs/ffs/ffs_snapshot.c:424 > 2nd 0xfffffffe53e58bc8 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2443 > 3rd 0xffffff00034fc7f8 ufs (ufs) @ /usr/src/sys/ufs/ffs/ffs_snapshot.c:545 LOR #285 (new) > --- syscall (378, FreeBSD ELF64, nmount), rip = 0x8007a6cec, rsp = 0x7fffffffea48, rbp = 0x800a02530 --- > lock order reversal: > 1st 0xfffffffe53e58bc8 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2443 > 2nd 0xffffff0003892330 snaplk (snaplk) @ /usr/src/sys/ufs/ffs/ffs_snapshot.c:794 LOR #269 > lock order reversal: > 1st 0xffffff0003892330 snaplk (snaplk) @ /usr/src/sys/kern/vfs_vnops.c:293 > 2nd 0xffffff0003a2d7f8 ufs (ufs) @ /usr/src/sys/ufs/ffs/ffs_snapshot.c:1588 LOR #240 > lock order reversal: > 1st 0xc5f70ad0 ufs (ufs) @ /mnt/1/src-current/sys/ufs/ffs/ffs_snapshot.c:424 > 2nd 0xd9637810 bufwait (bufwait) @ /mnt/1/src-current/sys/kern/vfs_bio.c:1783 > 3rd 0xc5b04058 ufs (ufs) @ /mnt/1/src-current/sys/ufs/ffs/ffs_snapshot.c:545 LOR #285 > lock order reversal: > 1st 0xd9637810 bufwait (bufwait) @ /mnt/1/src-current/sys/kern/vfs_bio.c:1783 > 2nd 0xc5fe9c9c snaplk (snaplk) @ /mnt/1/src-current/sys/ufs/ffs/ffs_snapshot.c:2564 > 3rd 0xd9610360 bufwait (bufwait) @ /mnt/1/src-current/sys/kern/vfs_bio.c:2443 LOR #286 (new) > lock order reversal: > 1st 0xc5fe9c9c snaplk (snaplk) @ /mnt/1/src-current/sys/kern/vfs_vnops.c:293 > 2nd 0xc5f70ad0 ufs (ufs) @ /mnt/1/src-current/sys/ufs/ffs/ffs_snapshot.c:1588 LOR #240 See http://sources.zabbadoz.net/freebsd/lor.html -- Bjoern A. Zeeb The greatest risk is not taking one.
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