Date: Thu, 20 Mar 2008 11:46:48 +0000 From: "Brad Pitney" <pitney.brad@googlemail.com> To: "Kris Kennaway" <kris@freebsd.org> Cc: daichi@freebsd.org, "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org> Subject: Re: machine wedged -> KDB: enter: lock violation Message-ID: <3dd203290803200446g7bca42b4h138252adadf9c53d@mail.gmail.com> In-Reply-To: <47E23A7F.3020807@FreeBSD.org> References: <3dd203290803192039y2f905ae1m36833978a2799e29@mail.gmail.com> <47E23A7F.3020807@FreeBSD.org>
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once again:
KDB: stack backtrace:
db_trace_self_wrapper(c074b5ee,e70c79ac,c05b6853,c4b8c420,e70c79ac,...)
at db_trace_self_wrapper+0x26
kdb_backtrace(c4b8c420,e70c79ac,c07025c5,e70c79bc,c4c002b8,...) at
kdb_backtrace+0x29
vfs_badlock(c4a31900,e70c79bc,c07b00a0,c4c002b8,c4b8c420) at vfs_badlock+0x23
assert_vop_elocked(c4c002b8,c0752ee7,c4b8c420,1b9,0,...) at
assert_vop_elocked+0x53
cache_lookup(c4bfe414,e70c7bc0,e70c7bd4,e70c7bc0,c49c5800,...) at
cache_lookup+0x53c
vfs_cache_lookup(e70c7aa8,c07545ba,c4bfe414,2,c4bfe414,...) at
vfs_cache_lookup+0xaa
VOP_LOOKUP_APV(c4a31900,e70c7aa8,c4b8c420,c075356a,19b,...) at
VOP_LOOKUP_APV+0xe5
lookup(e70c7bac,e70c7ae8,c6,bf,c49acc2c,...) at lookup+0x53e
namei(e70c7bac,2,c0754d92,c0577808,c08119c8,...) at namei+0x28e
kern_stat(c4b8c420,2820258c,0,e70c7c1c,c074d152,...) at kern_stat+0x3d
stat(c4b8c420,e70c7cfc,8,c074e1dc,c0785e00,...) at stat+0x2f
syscall(e70c7d38) at syscall+0x273
Xint0x80_syscall() at Xint0x80_syscall+0x20
--- syscall (188, FreeBSD ELF32, stat), eip = 0x281aa48f, esp =
0xbfbfea4c, ebp = 0xbfbfeae8 ---
cache_lookup: 0xc4c002b8 is not exclusive locked but should be
KDB: enter: lock violation
vnode 0xc4c002b8: tag unionfs, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VV_TEXT|VI_FREE|VI_OWEINACT)
v_object 0xc4b866c8 ref 0 pages 158
#0 0xc052fab5 at _lockmgr+0x1c5
#1 0xc0668df1 at ffs_lock+0x91
#2 0xc0705775 at VOP_LOCK1_APV+0xa5
#3 0xc05c53b8 at _vn_lock+0xf8
#4 0xc05ba130 at vget+0x110
#5 0xc0699c20 at vnode_pager_lock+0x1b0
#6 0xc06825df at vm_fault+0x1df
#7 0xc06ec478 at trap_pfault+0x118
#8 0xc06ecd07 at trap+0x2b7
#9 0xc06d5ecb at calltrap+0x6
unionfs_vp=0xc4c002b8, uppervp=0xc4b91414, lowervp=0xc4b9115c
unionfs: upper
0xc4b91414: tag ufs, type VREG
usecount 1, writecount 0, refcount 4 mountedhere 0
flags ()
v_object 0xc4b866c8 ref 0 pages 158
#0 0xc052fab5 at _lockmgr+0x1c5
#1 0xc0668df1 at ffs_lock+0x91
#2 0xc0705775 at VOP_LOCK1_APV+0xa5
#3 0xc05c53b8 at _vn_lock+0xf8
#4 0xc05ba130 at vget+0x110
#5 0xc0699c20 at vnode_pager_lock+0x1b0
#6 0xc06825df at vm_fault+0x1df
#7 0xc06ec478 at trap_pfault+0x118
#8 0xc06ecd07 at trap+0x2b7
#9 0xc06d5ecb at calltrap+0x6
ino 500700, on dev ad0s3a
unionfs: lower
0xc4b9115c: tag ufs, type VREG
usecount 4, writecount 0, refcount 7 mountedhere 0
flags (VV_TEXT)
v_object 0xc4be1aa8 ref 2 pages 109
#0 0xc052fab5 at _lockmgr+0x1c5
#1 0xc0668df1 at ffs_lock+0x91
#2 0xc0705775 at VOP_LOCK1_APV+0xa5
#3 0xc05c53b8 at _vn_lock+0xf8
#4 0xc05ba130 at vget+0x110
#5 0xc0699c20 at vnode_pager_lock+0x1b0
#6 0xc06825df at vm_fault+0x1df
#7 0xc06ec478 at trap_pfault+0x118
#8 0xc06ecd07 at trap+0x2b7
#9 0xc06d5ecb at calltrap+0x6
ino 144832, on dev ad0s3a
--
Best regards,
Brad
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