Bug 225923 - ZFS lock order reversal in vfs_subr.c:2157 vfs_subr.c:2607
Summary: ZFS lock order reversal in vfs_subr.c:2157 vfs_subr.c:2607
Status: Closed Not A Bug
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: CURRENT
Hardware: Any Any
: --- Affects Only Me
Assignee: freebsd-bugs (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-02-15 16:40 UTC by vidwer+fbsdbugs
Modified: 2018-02-15 17:00 UTC (History)
0 users

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Description vidwer+fbsdbugs 2018-02-15 16:40:28 UTC 
build: 12.0-CURRENT r329245
hardware: amd64

lock order reversal:
 1st 0xfffff800098945f0 syncer (syncer) @ /usr/src/sys/kern/vfs_subr.c:2157
 2nd 0xfffff80025048240 zfs (zfs) @ /usr/src/sys/kern/vfs_subr.c:2607
stack backtrace:
#0 0xffffffff80b2e403 at witness_debugger+0x73
#1 0xffffffff80b2e284 at witness_checkorder+0xe34
#2 0xffffffff80a9e4d1 at lockmgr_lock_fast_path+0x1b1
#3 0xffffffff810fdc09 at VOP_LOCK1_APV+0xd9
#4 0xffffffff80ba99b6 at _vn_lock+0x66
#5 0xffffffff80b9834f at vget+0x7f
#6 0xffffffff80b9a3e6 at vfs_msync+0xa6
#7 0xffffffff80b9f0c6 at sync_fsync+0xc6
#8 0xffffffff810fcb79 at VOP_FSYNC_APV+0xd9
#9 0xffffffff80b9cf34 at sched_sync+0x284
#10 0xffffffff80a89ec4 at fork_exit+0x84
#11 0xffffffff80f5acde at fork_trampoline+0xe
Comment 1 vidwer+fbsdbugs 2018-02-15 16:43:16 UTC 
zpool version: 5000

Bug #128633 or #142878 or #210906 don't seem to match, when looking at the reported line numbers or OS versions.
Comment 2 Andriy Gapon freebsd_committer freebsd_triage 2018-02-15 17:00:05 UTC 
(In reply to vidwer+fbsdbugs from comment #0)

Have you experienced any real problem?
A diagnostic message is not a bug.