Date: Sat, 28 May 2016 20:13:07 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 192923] Lock order reversal in vfs_bio.c bufwait Message-ID: <bug-192923-8-LcukSXmKMN@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-192923-8@https.bugs.freebsd.org/bugzilla/> References: <bug-192923-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D192923 --- Comment #3 from Marcus von Appen <mva@FreeBSD.org> --- And a third one. It often occurs on heavy disk access (e.g. running synth upgrade-system) FreeBSD ... 11.0-CURRENT FreeBSD 11.0-CURRENT #1 r300409M: Wed May 25 22:39= :21 CEST 2016 ...:/usr/obj/usr/src/sys/GENERIC amd64 lock order reversal: 1st 0xfffffe03d06bc900 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:3512 2nd 0xfffff800142ac400 dirhash (dirhash) @ /usr/src/sys/ufs/ufs/ufs_dirhash.c:281 stack backtrace: #0 0xffffffff80a9b7c0 at witness_debugger+0x70 #1 0xffffffff80a9b6b4 at witness_checkorder+0xe54 #2 0xffffffff80a452c2 at _sx_xlock+0x72 #3 0xffffffff80cfd74e at ufsdirhash_add+0x3e #4 0xffffffff80d004fa at ufs_direnter+0x4da #5 0xffffffff80d07b80 at ufs_rename+0xf60 #6 0xffffffff81002420 at VOP_RENAME_APV+0x100 #7 0xffffffff80b08928 at kern_renameat+0x4a8 #8 0xffffffff80ea6a2b at amd64_syscall+0x2db #9 0xffffffff80e86d9b at Xfast_syscall+0xfb lock order reversal: 1st 0xfffff80014d35240 ufs (ufs) @ /usr/src/sys/ufs/ufs/ufs_vnops.c:1157 2nd 0xfffffe03d06ce790 bufwait (bufwait) @ /usr/src/sys/ufs/ffs/ffs_vnops.c:263 3rd 0xfffff80014f7c9a0 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2498 stack backtrace: #0 0xffffffff80a9b7c0 at witness_debugger+0x70 #1 0xffffffff80a9b6b4 at witness_checkorder+0xe54 #2 0xffffffff80a155c6 at __lockmgr_args+0x4d6 #3 0xffffffff80cf8466 at ffs_lock+0xa6 #4 0xffffffff81002f30 at VOP_LOCK1_APV+0x100 #5 0xffffffff80b0b73a at _vn_lock+0x9a #6 0xffffffff80afbbb3 at vget+0x63 #7 0xffffffff80aee68c at vfs_hash_get+0xcc #8 0xffffffff80cf4200 at ffs_vgetf+0x40 #9 0xffffffff80cebcea at softdep_sync_buf+0xb3a #10 0xffffffff80cf9056 at ffs_syncvnode+0x256 #11 0xffffffff80cd05e7 at ffs_truncate+0x8a7 #12 0xffffffff80d08030 at ufs_rename+0x1410 #13 0xffffffff81002420 at VOP_RENAME_APV+0x100 #14 0xffffffff80b08928 at kern_renameat+0x4a8 #15 0xffffffff80ea6a2b at amd64_syscall+0x2db #16 0xffffffff80e86d9b at Xfast_syscall+0xfb --=20 You are receiving this mail because: You are the assignee for the bug.=
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