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From: =?iso-8859-2?Q?Haar_J=E1nos?= <djani22@netcenter.hu>
To: <linux-xfs@oss.sgi.com>
Cc: <linux-kernel@vger.kernel.org>
Subject: xfslogd-spinlock bug?
Date: Tue, 12 Dec 2006 00:00:38 +0100
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Hello, list,

I am the "big red button men" with the one big 14TB xfs, if somebody can
remember me. :-)

Now i found something in the 2.6.16.18, and try the 2.6.18.4, and the
2.6.19, but the bug still exists:

Dec 11 22:47:21 dy-base BUG: spinlock bad magic on CPU#3, xfslogd/3/317
Dec 11 22:47:21 dy-base general protection fault: 0000 [1]
Dec 11 22:47:21 dy-base SMP
Dec 11 22:47:21 dy-base
Dec 11 22:47:21 dy-base CPU 3
Dec 11 22:47:21 dy-base
Dec 11 22:47:21 dy-base Modules linked in:
Dec 11 22:47:21 dy-base  nbd
Dec 11 22:47:21 dy-base  rd
Dec 11 22:47:21 dy-base  netconsole
Dec 11 22:47:21 dy-base  e1000
Dec 11 22:47:21 dy-base  video
Dec 11 22:47:21 dy-base
Dec 11 22:47:21 dy-base Pid: 317, comm: xfslogd/3 Not tainted 2.6.19 #1
Dec 11 22:47:21 dy-base RIP: 0010:[<ffffffff803f3aba>]
Dec 11 22:47:21 dy-base  [<ffffffff803f3aba>] spin_bug+0x69/0xdf
Dec 11 22:47:21 dy-base RSP: 0018:ffff81011fb89bc0  EFLAGS: 00010002
Dec 11 22:47:21 dy-base RAX: 0000000000000033 RBX: 6b6b6b6b6b6b6b6b RCX:
0000000000000000
Dec 11 22:47:21 dy-base RDX: ffffffff808137a0 RSI: 0000000000000082 RDI:
0000000100000000
Dec 11 22:47:21 dy-base RBP: ffff81011fb89be0 R08: 0000000000026a70 R09:
000000006b6b6b6b
Dec 11 22:47:21 dy-base R10: 0000000000000082 R11: ffff81000584d380 R12:
ffff8100db92ad80
Dec 11 22:47:21 dy-base R13: ffffffff80642dc6 R14: 0000000000000000 R15:
0000000000000003
Dec 11 22:47:21 dy-base FS:  0000000000000000(0000)
GS:ffff81011fc76b90(0000) knlGS:0000000000000000
Dec 11 22:47:21 dy-base CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
Dec 11 22:47:21 dy-base CR2: 00002ba007700000 CR3: 0000000108c05000 CR4:
00000000000006e0
Dec 11 22:47:21 dy-base Process xfslogd/3 (pid: 317, threadinfo
ffff81011fb88000, task ffff81011fa7f830)
Dec 11 22:47:21 dy-base Stack:
Dec 11 22:47:21 dy-base  ffff81011fb89be0
Dec 11 22:47:21 dy-base  ffff8100db92ad80
Dec 11 22:47:21 dy-base  0000000000000000
Dec 11 22:47:21 dy-base  0000000000000000
Dec 11 22:47:21 dy-base
Dec 11 22:47:21 dy-base  ffff81011fb89c10
Dec 11 22:47:21 dy-base  ffffffff803f3bdc
Dec 11 22:47:21 dy-base  0000000000000282
Dec 11 22:47:21 dy-base  0000000000000000
Dec 11 22:47:21 dy-base
Dec 11 22:47:21 dy-base  0000000000000000
Dec 11 22:47:21 dy-base  0000000000000000
Dec 11 22:47:21 dy-base  ffff81011fb89c30
Dec 11 22:47:21 dy-base  ffffffff805e7f2b
Dec 11 22:47:21 dy-base
Dec 11 22:47:21 dy-base Call Trace:
Dec 11 22:47:21 dy-base  [<ffffffff803f3bdc>] _raw_spin_lock+0x23/0xf1
Dec 11 22:47:21 dy-base  [<ffffffff805e7f2b>] _spin_lock_irqsave+0x11/0x18
Dec 11 22:47:21 dy-base  [<ffffffff80222aab>] __wake_up+0x22/0x50
Dec 11 22:47:21 dy-base  [<ffffffff803c97f9>] xfs_buf_unpin+0x21/0x23
Dec 11 22:47:21 dy-base  [<ffffffff803970a4>] xfs_buf_item_unpin+0x2e/0xa6
Dec 11 22:47:21 dy-base  [<ffffffff803bc460>]
xfs_trans_chunk_committed+0xc3/0xf7
Dec 11 22:47:21 dy-base  [<ffffffff803bc4dd>] xfs_trans_committed+0x49/0xde
Dec 11 22:47:21 dy-base  [<ffffffff803b1bde>]
xlog_state_do_callback+0x185/0x33f
Dec 11 22:47:21 dy-base  [<ffffffff803b1e9c>] xlog_iodone+0x104/0x131
Dec 11 22:47:22 dy-base  [<ffffffff803c9dae>] xfs_buf_iodone_work+0x1a/0x3e
Dec 11 22:47:22 dy-base  [<ffffffff802399d8>] worker_thread+0x0/0x134
Dec 11 22:47:22 dy-base  [<ffffffff8023937e>] run_workqueue+0xa8/0xf8
Dec 11 22:47:22 dy-base  [<ffffffff803c9d94>] xfs_buf_iodone_work+0x0/0x3e
Dec 11 22:47:22 dy-base  [<ffffffff802399d8>] worker_thread+0x0/0x134
Dec 11 22:47:22 dy-base  [<ffffffff80239ad3>] worker_thread+0xfb/0x134
Dec 11 22:47:22 dy-base  [<ffffffff80223f6c>] default_wake_function+0x0/0xf
Dec 11 22:47:22 dy-base  [<ffffffff802399d8>] worker_thread+0x0/0x134
Dec 11 22:47:22 dy-base  [<ffffffff8023c6e5>] kthread+0xd8/0x10b
Dec 11 22:47:22 dy-base  [<ffffffff802256ac>] schedule_tail+0x45/0xa6
Dec 11 22:47:22 dy-base  [<ffffffff8020a6a8>] child_rip+0xa/0x12
Dec 11 22:47:22 dy-base  [<ffffffff802399d8>] worker_thread+0x0/0x134
Dec 11 22:47:22 dy-base  [<ffffffff8023c60d>] kthread+0x0/0x10b
Dec 11 22:47:22 dy-base  [<ffffffff8020a69e>] child_rip+0x0/0x12
Dec 11 22:47:22 dy-base
Dec 11 22:47:22 dy-base
Dec 11 22:47:22 dy-base Code:
Dec 11 22:47:22 dy-base 8b
Dec 11 22:47:22 dy-base 83
Dec 11 22:47:22 dy-base 0c
Dec 11 22:47:22 dy-base 01
Dec 11 22:47:22 dy-base 00
Dec 11 22:47:22 dy-base 00
Dec 11 22:47:22 dy-base 48
Dec 11 22:47:22 dy-base 8d
Dec 11 22:47:22 dy-base 8b
Dec 11 22:47:22 dy-base 98
Dec 11 22:47:22 dy-base 02
Dec 11 22:47:22 dy-base 00
Dec 11 22:47:22 dy-base 00
Dec 11 22:47:22 dy-base 41
Dec 11 22:47:22 dy-base 8b
Dec 11 22:47:22 dy-base 54
Dec 11 22:47:22 dy-base 24
Dec 11 22:47:22 dy-base 04
Dec 11 22:47:22 dy-base 41
Dec 11 22:47:22 dy-base 89
Dec 11 22:47:22 dy-base
Dec 11 22:47:22 dy-base RIP
Dec 11 22:47:22 dy-base  [<ffffffff803f3aba>] spin_bug+0x69/0xdf
Dec 11 22:47:22 dy-base  RSP <ffff81011fb89bc0>
Dec 11 22:47:22 dy-base
Dec 11 22:47:22 dy-base Kernel panic - not syncing: Fatal exception
Dec 11 22:47:22 dy-base
Dec 11 22:47:22 dy-base Rebooting in 5 seconds..

After this, sometimes the server reboots normally, but sometimes hangs, no
console, no sysreq, no nothing.

This is a "simple" crash, no "too much" data lost, or else.

Can somebody help me to tracking down the problem?

Thanks,
Janos Haar



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