Date: Sun, 26 Oct 2025 22:00:22 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 290550] LOR: lock order reversal - zfs and devfs/nullfs Message-ID: <bug-290550-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=290550 Bug ID: 290550 Summary: LOR: lock order reversal - zfs and devfs/nullfs Product: Base System Version: 14.3-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: vova@fbsd.ru On shutdown of the system with jails on kernel with std.debug: jails-astart: auto-stop jail: www lock order reversal: 1st 0xfffff803c8203af0 zfs (zfs, lockmgr) @ /usr/src/sys/fs/nullfs/null_vnops.c:786 2nd 0xfffff80035c383f0 devfs (devfs, lockmgr) @ /usr/src/sys/kern/vfs_subr.c:3320 lock order zfs -> devfs attempted at: #0 0xffffffff80b830b1 at witness_checkorder+0xbe1 #1 0xffffffff80ada431 at lockmgr_xlock+0x51 #2 0xffffffff8110a4ca at VOP_LOCK1_APV+0x3a #3 0xffffffff80c25c33 at _vn_lock+0x53 #4 0xffffffff80c0b85f at vget_finish+0xaf #5 0xffffffff8098df9e at devfs_allocv+0xbe #6 0xffffffff8098d693 at devfs_root+0x43 #7 0xffffffff80c1146a at vfs_cache_root_fallback+0xea #8 0xffffffff80c0ccbb at vflush+0x4b #9 0xffffffff8098d58e at devfs_unmount+0x3e #10 0xffffffff80c00e08 at dounmount+0x658 #11 0xffffffff80c0074c at kern_unmount+0x2ec #12 0xffffffff81041f0a at amd64_syscall+0x15a #13 0xffffffff81013b2b at fast_syscall_common+0xf8 lock order reversal: 1st 0xfffff800358cd3f0 nullfs (nullfs, lockmgr) @ /usr/src/sys/kern/vfs_mount.c:2264 2nd 0xfffff800358cd770 zfs (zfs, lockmgr) @ /usr/src/sys/fs/nullfs/null_vnops.c:786 lock order zfs -> nullfs established at: #0 0xffffffff80b82834 at witness_checkorder+0x364 #1 0xffffffff80ad913b at lockmgr_xlock_hard+0x6b #2 0xffffffff80ad99ff at __lockmgr_args+0x1ff #3 0xffffffff83589c20 at null_reclaim+0x60 #4 0xffffffff8110a32d at VOP_RECLAIM_APV+0x5d #5 0xffffffff80c0d9f4 at vgonel+0x474 #6 0xffffffff80c0e379 at vrecyclel+0x69 #7 0xffffffff80c0e2ef at vrecycle+0x2f #8 0xffffffff83589b60 at null_inactive+0x40 #9 0xffffffff8110a00d at VOP_INACTIVE_APV+0x5d #10 0xffffffff80c0cb12 at vinactivef+0xc2 #11 0xffffffff80c0c93b at vinactive+0x8b #12 0xffffffff80c0c0fc at vput_final+0x29c #13 0xffffffff80c21c31 at kern_frmdirat+0x271 #14 0xffffffff81041f0a at amd64_syscall+0x15a #15 0xffffffff81013b2b at fast_syscall_common+0xf8 lock order nullfs -> zfs attempted at: #0 0xffffffff80b830b1 at witness_checkorder+0xbe1 #1 0xffffffff80ada431 at lockmgr_xlock+0x51 #2 0xffffffff8110a4ca at VOP_LOCK1_APV+0x3a #3 0xffffffff83589db8 at null_lock+0xb8 #4 0xffffffff8110a4ca at VOP_LOCK1_APV+0x3a #5 0xffffffff80c25c33 at _vn_lock+0x53 #6 0xffffffff80c0cd59 at vflush+0xe9 #7 0xffffffff83588ca0 at nullfs_unmount+0x50 #8 0xffffffff80c00e08 at dounmount+0x658 #9 0xffffffff80c0074c at kern_unmount+0x2ec #10 0xffffffff81041f0a at amd64_syscall+0x15a #11 0xffffffff81013b2b at fast_syscall_common+0xf8 jails-astart: auto-stop jail: nnvfilm jails-astart: auto-stop jail: px 44373jails-astart: auto-stop jail: zabbix jails-astart: auto-stop jail: hat jails-astart: auto-stop jail: tg jails-astart: auto-stop jail: smb lock order reversal: 1st 0xfffff8036de1e770 zfs (zfs, lockmgr) @ /usr/src/sys/fs/nullfs/null_vnops.c:786 2nd 0xfffff804602b5770 fdescfs (fdescfs, lockmgr) @ /usr/src/sys/kern/vfs_subr.c:3320 lock order zfs -> fdescfs attempted at: #0 0xffffffff80b830b1 at witness_checkorder+0xbe1 #1 0xffffffff80ad8a24 at lockmgr_lock_flags+0x184 #2 0xffffffff8110a4ca at VOP_LOCK1_APV+0x3a #3 0xffffffff80c25c33 at _vn_lock+0x53 #4 0xffffffff80c0b85f at vget_finish+0xaf #5 0xffffffff83420262 at fdesc_root+0x22 #6 0xffffffff80c0ccbb at vflush+0x4b #7 0xffffffff8342020e at fdesc_unmount+0x6e #8 0xffffffff80c00e08 at dounmount+0x658 #9 0xffffffff80c0074c at kern_unmount+0x2ec #10 0xffffffff81041f0a at amd64_syscall+0x15a #11 0xffffffff81013b2b at fast_syscall_common+0xf8 Oct 27 00:54:17 srv syslogd: exiting on signal 15 epair7a: link state changed to DOWN eth0: link state changed to DOWN 2025-10-27T00:54:18.428268+03:00 srv.fbsd.ru apcupsd 2172 - - apcupsd shutdown succeeded Waiting (max 60 seconds) for system process `vnlru' to stop... done Waiting (max 60 seconds) for system process `syncer' to stop... Syncing disks, vnodes remaining... 0 0 0 0 0 0 0 done 14-stable/087fc6ae0a8c all jails are zfs-based, and also have devfs and number of nullfs mounts -- You are receiving this mail because: You are the assignee for the bug.home | help
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