Date: Wed, 21 Sep 2011 19:32:00 -0400 (EDT) From: Curtis Ruck <root@nas.cruck.us> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/160893: 9.0-BETA2 kernel panic Message-ID: <201109212332.p8LNW0bk002181@nas.cruck.us> Resent-Message-ID: <201109212350.p8LNo6L8000572@freefall.freebsd.org>
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>Number: 160893
>Category: kern
>Synopsis: 9.0-BETA2 kernel panic
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Sep 21 23:50:06 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: Curtis Ruck
>Release: FreeBSD 9.0-BETA2 amd64
>Organization:
none
>Environment:
System: FreeBSD nas.cruck.us 9.0-BETA2 FreeBSD 9.0-BETA2 #0: Sun Sep 11 13:21:10 EDT 2011 root@nas.cruck.us:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
ZFS NOTICE: Prefetch is disabled by default if less than 4GB of RAM is present;
to enable, add "vfs.zfs.prefetch_disable=0" to /boot/loader.conf.
ZFS filesystem version 5
ZFS storage pool version 28
lock order reversal:
1st 0xfffffe0003af8638 ufs (ufs) @ /usr/src/sys/kern/vfs_lookup.c:530
2nd 0xffffff80f5a75338 bufwait (bufwait) @ /usr/src/sys/ufs/ffs/ffs_vnops.c:260
3rd 0xfffffe000df78098 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2134
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2a
kdb_backtrace() at kdb_backtrace+0x37
_witness_debugger() at _witness_debugger+0x2e
witness_checkorder() at witness_checkorder+0x807
__lockmgr_args() at __lockmgr_args+0xdc6
ffs_lock() at ffs_lock+0x8c
VOP_LOCK1_APV() at VOP_LOCK1_APV+0x9b
_vn_lock() at _vn_lock+0x47
vget() at vget+0x7b
vfs_hash_get() at vfs_hash_get+0xd5
ffs_vgetf() at ffs_vgetf+0x48
softdep_sync_buf() at softdep_sync_buf+0x547
ffs_syncvnode() at ffs_syncvnode+0x2b3
ffs_truncate() at ffs_truncate+0x477
ufs_direnter() at ufs_direnter+0x73b
ufs_makeinode() at ufs_makeinode+0x26a
VOP_CREATE_APV() at VOP_CREATE_APV+0x8d
vn_open_cred() at vn_open_cred+0x46a
kern_openat() at kern_openat+0x1f9
syscallenter() at syscallenter+0x1aa
syscall() at syscall+0x4c
Xfast_syscall() at Xfast_syscall+0xdd
--- syscall (5, FreeBSD ELF64, open), rip = 0x800936f2c, rsp = 0x7fffffffdac8, rbp = 0 ---
pid 2044 (cvsup), uid 0: exited on signal 4 (core dumped)
lock order reversal:
1st 0xffffff80f5c539d8 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2658
2nd 0xfffffe00153df600 dirhash (dirhash) @ /usr/src/sys/ufs/ufs/ufs_dirhash.c:284
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2a
kdb_backtrace() at kdb_backtrace+0x37
_witness_debugger() at _witness_debugger+0x2e
witness_checkorder() at witness_checkorder+0x807
_sx_xlock() at _sx_xlock+0x55
ufsdirhash_acquire() at ufsdirhash_acquire+0x33
ufsdirhash_add() at ufsdirhash_add+0x19
ufs_direnter() at ufs_direnter+0x909
ufs_makeinode() at ufs_makeinode+0x26a
VOP_CREATE_APV() at VOP_CREATE_APV+0x8d
vn_open_cred() at vn_open_cred+0x46a
kern_openat() at kern_openat+0x1f9
syscallenter() at syscallenter+0x1aa
syscall() at syscall+0x4c
Xfast_syscall() at Xfast_syscall+0xdd
--- syscall (5, FreeBSD ELF64, open), rip = 0x80112ef2c, rsp = 0x7fffff1f8b38, rbp = 0x180 ---
panic: soabort: so_count
cpuid = 0
KDB: enter: panic
>How-To-Repeat:
Heavy I/O load through either Samba or NFS on ZFS.
>Fix:
unknown
>Release-Note:
>Audit-Trail:
>Unformatted:
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