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Message-Id: <201210120818.q9C8I54f035281@red.freebsd.org>
Date: Fri, 12 Oct 2012 08:18:05 GMT
From: Robert Schulze <rs@bytecamp.net>
To: freebsd-gnats-submit@FreeBSD.org
Subject: LOR zfs/zfs_vfsops.c kern/kern_descrip.c
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>Number:         172630
>Category:       kern
>Synopsis:       [zfs] [lor] zfs/zfs_vfsops.c kern/kern_descrip.c
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-fs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Oct 12 08:20:00 UTC 2012
>Closed-Date:    
>Last-Modified:  Thu Apr 17 04:32:23 UTC 2014
>Originator:     Robert Schulze
>Release:        8.3-STABLE
>Organization:
>Environment:
FreeBSD hostname 8.3-STABLE FreeBSD 8.3-STABLE #19: Fri Sep 28 12:07:17 CEST 2012     root@hostname:/usr/obj/usr/src/sys/BAK  amd64

>Description:
Just want to report that LOR:

kernel: lock order reversal:
kernel: 1st 0xffffff00892dca58 zfs (zfs) @ /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c:1700
kernel: 2nd 0xffffffff809651c0 allproc (allproc) @ /usr/src/sys/kern/kern_descrip.c:2547
kernel: KDB: stack backtrace:
kernel: #0 0xffffffff80476c96 at kdb_backtrace+0x66
kernel: #1 0xffffffff80485f95 at _witness_debugger+0x65
kernel: #2 0xffffffff80487024 at witness_checkorder+0x694
kernel: #3 0xffffffff8044f8fc at _sx_slock+0x4c
kernel: #4 0xffffffff804156ce at mountcheckdirs+0x3e
kernel: #5 0xffffffff804c926b at dounmount+0x41b
kernel: #6 0xffffffff80eaac92 at zfs_unmount_snap+0xb2
kernel: #7 0xffffffff80eaadc5 at zfs_ioc_destroy_snaps_nvl+0xd5
kernel: #8 0xffffffff80eaaa96 at zfsdev_ioctl+0xe6
kernel: #9 0xffffffff803e584a at devfs_ioctl_f+0x7a
kernel: #10 0xffffffff8048878e at kern_ioctl+0xfe
kernel: #11 0xffffffff8048899f at ioctl+0xef
kernel: #12 0xffffffff806711c9 at amd64_syscall+0x119
kernel: #13 0xffffffff8065abdc at Xfast_syscall+0xfc

>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: freebsd-bugs->freebsd-fs 
Responsible-Changed-By: linimon 
Responsible-Changed-When: Thu Apr 17 04:32:02 UTC 2014 
Responsible-Changed-Why:  
Over to maintainer(s). 

http://www.freebsd.org/cgi/query-pr.cgi?pr=172630 
>Unformatted:
