Date: Tue, 9 Dec 2003 13:37:28 -0800 (PST) From: Don Lewis <truckman@FreeBSD.org> To: jesse@wingnet.net Cc: freebsd-current@FreeBSD.org Subject: Re: LOR: ffs_snapshot.c from 5.2-BETA Message-ID: <200312092142.hB9LbSeF050770@gw.catspoiler.org> In-Reply-To: <br4mir$vln$1@sea.gmane.org>
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On 9 Dec, Jesse Guardiani wrote: > Howdy list, > > Has anyone seen this yet? Happened while I was fsck'ing my > external USB hard drive a few days ago. Didn't see anything > recent like this in the archive (Nov was the closest, but it > looked like a separate issue). > > > acquiring duplicate lock of same type: "vnode interlock" > 1st vnode interlock @ ufs/ffs/ffs_snapshot.c:488 > 2nd vnode interlock @ ufs/ffs/ffs_snapshot.c:491 > Stack backtrace: > backtrace(c06df4ef,c06e3b95,c06eca1f,1eb,246) at backtrace+0x17 > witness_lock(c42b9a28,8,c06eca1f,1eb,c3b48678) at witness_lock+0x672 > _mtx_lock_flags(c42b9a28,0,c06eca16,1eb,c19dbf00) at _mtx_lock_flags+0xba > ffs_snapshot(c3abbc00,bfbfed88,70,c05482f3,c073f800) at ffs_snapshot+0x1759 A related LOR was reported a few days ago. I think it is harmless, but I also think I know how to fix it.
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