[Xen-devel] Recurring OOPS in latest -unstable kernel

[Kip Macy <kip.macy@xxxxxxxxx>]

I hit the following oops a couple of times a day - it seems to
correspond to tearing down a vif:

Jul  3 01:30:13 ubuntu kernel: ------------[ cut here ]------------
Jul  3 01:30:13 ubuntu kernel: kernel BUG at include/linux/dcache.h:293!
Jul  3 01:30:13 ubuntu kernel: invalid operand: 0000 [#1]
Jul  3 01:30:13 ubuntu kernel: SMP 
Jul  3 01:30:13 ubuntu kernel: Modules linked in: video thermal
processor fan button battery ac mptscsih mptbase
Jul  3 01:30:13 ubuntu kernel: CPU:    0
Jul  3 01:30:13 ubuntu kernel: EIP:    0061:[<c0193100>]    Not tainted VLI
Jul  3 01:30:13 ubuntu kernel: EFLAGS: 00010246   (2.6.11.12-xen0) 
Jul  3 01:30:13 ubuntu kernel: EIP is at sysfs_remove_dir+0x100/0x110
Jul  3 01:30:13 ubuntu kernel: eax: 00000000   ebx: d557b3d4   ecx:
dcfd4234   edx: d557b3d4
Jul  3 01:30:13 ubuntu kernel: esi: da0e1a20   edi: dd4d1424   ebp:
00000006   esp: c089de64
Jul  3 01:30:13 ubuntu kernel: ds: 007b   es: 007b   ss: 0069
Jul  3 01:30:13 ubuntu kernel: Process events/0 (pid: 10,
threadinfo=c089c000 task=c075ca40)
Jul  3 01:30:13 ubuntu kernel: Stack: c0191f02 dcfd4dbc dc576000
d557b3d4 da0e1a20 dc576000 00000006 c0211070
Jul  3 01:30:13 ubuntu kernel:        d557b3d4 00000002 d557b340
c03f087a d557b3d4 d557b340 da0e1a20 c03f1948
Jul  3 01:30:13 ubuntu kernel:        da0e1a20 dc576000 c04c84a0
dc576000 00000006 dc576144 c012cd55 c04c84a0
Jul  3 01:30:13 ubuntu kernel: Call Trace:
Jul  3 01:30:13 ubuntu kernel:  [<c0191f02>] sysfs_hash_and_remove+0x52/0xe9
Jul  3 01:30:13 ubuntu kernel:  [<c0211070>] kobject_del+0x20/0x30
Jul  3 01:30:13 ubuntu kernel:  [<c03f087a>] br_del_if+0x3a/0x5c
Jul  3 01:30:13 ubuntu kernel:  [<c03f1948>] br_device_event+0xb8/0x100
Jul  3 01:30:13 ubuntu kernel:  [<c012cd55>] notifier_call_chain+0x25/0x40
Jul  3 01:30:13 ubuntu kernel:  [<c03a4a2f>] unregister_netdevice+0x14f/0x270
Jul  3 01:30:13 ubuntu kernel:  [<c03a4b65>] unregister_netdev+0x15/0x1e
Jul  3 01:30:13 ubuntu kernel:  [<c02be4f5>] netif_destroy+0x75/0x90
Jul  3 01:30:13 ubuntu kernel:  [<c02bdeb4>] netif_ctrlif_rx+0x64/0xb0
Jul  3 01:30:13 ubuntu kernel:  [<c0105550>] __ctrl_if_rxmsg_deferred+0x40/0x50
Jul  3 01:30:13 ubuntu kernel:  [<c012fbc8>] worker_thread+0x1d8/0x260
Jul  3 01:30:14 ubuntu kernel:  [<c0105510>] __ctrl_if_rxmsg_deferred+0x0/0x50
Jul  3 01:30:14 ubuntu kernel:  [<c011a930>] default_wake_function+0x0/0x20
Jul  3 01:30:14 ubuntu kernel:  [<c011a930>] default_wake_function+0x0/0x20
Jul  3 01:30:14 ubuntu kernel:  [<c012f9f0>] worker_thread+0x0/0x260
Jul  3 01:30:14 ubuntu kernel:  [<c01341ad>] kthread+0xbd/0x100
Jul  3 01:30:14 ubuntu kernel:  [<c01340f0>] kthread+0x0/0x100
Jul  3 01:30:14 ubuntu kernel:  [<c0107b15>] kernel_thread_helper+0x5/0x10
Jul  3 01:30:14 ubuntu kernel: Code: 89 44 24 08 8b 00 89 04 24 e8 0d
25 fb ff 8b 54 24 08 8b 42 04 89 04 24 e8 7e e0 07 00 8b 44 24 08 89
04 24 e8 f2 24 fb ff eb 92 <0f> 0b 25 01 53 65 42 c0 e9 13 ff ff ff 8d
76 00 83 ec 20 89 5c
Jul  3 01:31:57 ubuntu xenstored: xenstored corruption: connection id
0: err Bad address: Unknown error 14 (Bad address)

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