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Date: Fri, 11 Sep 2009 19:05:59 +0100
From: Kris Kennaway <kris@FreeBSD.org>
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Cc: 
Subject: Re: panic: sx_xlock() of destroyed sx
	@	/zoo/kris/src8/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c:535
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Kris Kennaway wrote:
> 9.0 doing I/O to a zfs:
> 
> panic: sx_xlock() of destroyed sx @ 
> /zoo/kris/src8/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c:535 
> 
> db> wh
> Tracing pid 14 tid 100047 td 0xffffff000357c720
> kdb_enter() at kdb_enter+0x3d
> panic() at panic+0x17b
> _sx_xlock() at _sx_xlock+0xe9
> zfs_range_unlock() at zfs_range_unlock+0x38
> zfs_get_data() at zfs_get_data+0xd7
> zil_commit() at zil_commit+0x532
> zfs_sync() at zfs_sync+0xa6
> sync_fsync() at sync_fsync+0x13a
> VOP_FSYNC_APV() at VOP_FSYNC_APV+0xb7
> sync_vnode() at sync_vnode+0x157
> sched_sync() at sched_sync+0x1d1
> fork_exit() at fork_exit+0x12a
> fork_trampoline() at fork_trampoline+0xe
> --- trap 0, rip = 0, rsp = 0xffffff8125da0d30, rbp = 0 ---
> 
> This was essentially just doing make world + cvs update + tar creation 
> in a loop and failed after about a week.
> 
> Kris
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> 

Any ideas?  Machine is still in DDB.

Kris