Date: Mon, 20 Aug 2007 15:36:15 +0200 (CEST) From: postmaster@uni-bielefeld.de To: FreeBSD-gnats-submit@FreeBSD.org Cc: postmaster@uni-bielefeld.de Subject: kern/115645: lockmgr: thread 0xc4c00d80, not exclusive lock holder 0xc4dd7c00 unlocking Message-ID: <200708201336.l7KDaFe7002380@rx300.hrz.uni-bielefeld.de> Resent-Message-ID: <200708201400.l7KE02D9002389@freefall.freebsd.org>
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>Number: 115645 >Category: kern >Synopsis: lockmgr: thread 0xc4c00d80, not exclusive lock holder 0xc4dd7c00 unlocking >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Aug 20 14:00:01 GMT 2007 >Closed-Date: >Last-Modified: >Originator: Lars Köller & Jens Pönninghaus >Release: FreeBSD 6.1-RELEASE-p12 i386 >Organization: Computing Center, Bielefeld University, Germany >Environment: System: FreeBSD rx300.hrz.uni-bielefeld.de 6.1-RELEASE-p12 FreeBSD 6.1-RELEASE-p12 #0: Tue Jan 16 16:58:07 CET 2007 root@rx300.hrz.uni-bielefeld.de:/opt/tmp/obj/usr/src/sys/PMX i386 >Description: We use the snapshot creation toolkit from rse@FreeBSD.org http://people.freebsd.org/~rse/snapshot/ on our Sophos PureMessage Server Farm (six FSC rx300 server). Cause PMX only supports FreeBSD-6.1, we can't upgrade to 6.2 at the moment. During creation of an snapshot the system panics from time to time Perhaps this is correlated with PR kern/68757. 115573 : cat /var/crash/info.13 Dump header from device /dev/da0s1b Architecture: i386 Architecture Version: 2 Dump Length: 1073242112B (1023 MB) Blocksize: 512 Dumptime: Fri Aug 17 13:01:36 2007 Hostname: rx300.hrz.uni-bielefeld.de Magic: FreeBSD Kernel Dump Version String: FreeBSD 6.1-RELEASE-p12 #0: Tue Jan 16 16:58:07 CET 2007 root@rx300.hrz.uni-bielefeld.de:/opt/tmp/obj/usr/src/sys/PMX Panic String: lockmgr: thread 0xc4c00d80, not exclusive lock holder 0xc4dd7c00 unlocking Dump Parity: 1320559640 Bounds: 13 Dump Status: good 115570 : df -kl Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/da0s1a 507630 185360 281660 40% / devfs 1 1 0 100% /dev procfs 4 4 0 100% /proc /dev/da0s1d 16244334 2434562 12510226 16% /var /dev/da0s1e 4058062 32 3733386 0% /tmp /dev/da0s1f 9499186 2032248 6707004 23% /usr /dev/da1s1a 68825650 10008236 53311362 16% /opt 115572 : mount /dev/da0s1a on / (ufs, local) devfs on /dev (devfs, local) procfs on /proc (procfs, local) /dev/da0s1d on /var (ufs, local, soft-updates) /dev/da0s1e on /tmp (ufs, local, soft-updates) /dev/da0s1f on /usr (ufs, local, soft-updates) /dev/da1s1a on /opt (ufs, local, soft-updates) pid906@rx300:/snap on /snap (nfs) 115569 : snapshot list Filesystem User User% Snap Snap% Snapshot / 181MB 36.5% 3MB 0.7% daily.0 / 181MB 36.5% 3MB 0.7% weekly.0 /var 2377MB 15.0% 40MB 0.3% daily.0 /var 2377MB 15.0% 9MB 0.1% hourly.0 /var 2377MB 15.0% 10MB 0.1% hourly.1 /var 2377MB 15.0% 10MB 0.1% hourly.2 /var 2377MB 15.0% 10MB 0.1% hourly.3 /var 2377MB 15.0% 10MB 0.1% hourly.4 /var 2377MB 15.0% 10MB 0.1% hourly.5 /var 2377MB 15.0% 10MB 0.1% hourly.6 /var 2377MB 15.0% 10MB 0.1% hourly.7 /var 2377MB 15.0% 44MB 0.3% weekly.0 /usr 1984MB 21.4% 61MB 0.7% daily.1 /usr 1984MB 21.4% 67MB 0.7% daily.2 /usr 1984MB 21.4% 11MB 0.1% weekly.0 /opt 9773MB 14.5% 361MB 0.5% daily.0 /opt 9773MB 14.5% 757MB 1.1% daily.2 /opt 9773MB 14.5% 142MB 0.2% hourly.0 /opt 9773MB 14.5% 156MB 0.2% hourly.1 /opt 9773MB 14.5% 171MB 0.3% hourly.2 /opt 9773MB 14.5% 187MB 0.3% hourly.3 /opt 9773MB 14.5% 204MB 0.3% hourly.4 /opt 9773MB 14.5% 218MB 0.3% hourly.5 /opt 9773MB 14.5% 231MB 0.3% hourly.6 /opt 9773MB 14.5% 717MB 1.1% weekly.0 >How-To-Repeat: Keep periodically snapshots. Perhaps the creation of files on the snapshotted filesystem is a prerequisite to trigger the crash (compare PR kern/68757). >Fix: Don't know! >Release-Note: >Audit-Trail: >Unformatted:
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