* 2.6.29-rc3: BUG: NMI Watchdog detected LOCKUP
@ 2009-02-08 10:21 Vegard Nossum
2009-02-13 0:19 ` Andrew Morton
0 siblings, 1 reply; 3+ messages in thread
From: Vegard Nossum @ 2009-02-08 10:21 UTC (permalink / raw)
To: Linux Kernel Mailing List
Hi,
Not sure exactly what happened here. Was running LTP, and it seems
that the USB flash disk (which held the root device, though I was
running LTP in a chroot on a fixed harddisk) disconnect, although I
didn't touch it.
[ 3344.890073] usb 1-6: unregistering interface 1-6:1.0
[ 3344.895744] sd 2:0:0:0: Device offlined - not ready after error recovery
[ 3344.902893] sd 2:0:0:0: [sdb] Unhandled error code
[ 3344.908051] sd 2:0:0:0: [sdb] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK
[ 3344.916810] end_request: I/O error, dev sdb, sector 1735619
[ 3344.922746] Write-error on swap-device (8:16:1735627)
[ 3344.928195] Write-error on swap-device (8:16:1735635)
[ 3344.933611] Write-error on swap-device (8:16:1735643)
[ 3344.939020] Write-error on swap-device (8:16:1735651)
[ 3344.944427] Write-error on swap-device (8:16:1735659)
[ 3344.949836] Write-error on swap-device (8:16:1735667)
[ 3344.955320] Write-error on swap-device (8:16:1735675)
[ 3344.960757] sd 2:0:0:0: rejecting I/O to offline device
[ 3344.961735] sd 2:0:0:0: rejecting I/O to offline device
[ 3344.972984] BUG: NMI Watchdog detected LOCKUP on CPU1, ip ffffffff81491f02, :
[ 3344.972984] CPU 1
[ 3344.972984] Modules linked in:
[ 3344.972984] Pid: 11127, comm: hackbench Not tainted 2.6.29-rc3 #219
[ 3344.972984] RIP: 0010:[<ffffffff81491f02>] [<ffffffff81491f02>] _spin_lock_b
[ 3344.972984] RSP: 0018:ffff880006b01408 EFLAGS: 00000093
[ 3344.972984] RAX: 0000000000003b39 RBX: 0000000000000001 RCX: 6db6db6db6db6db7
[ 3344.972984] RDX: ffff88003ec688d8 RSI: ffff880006b01428 RDI: ffff88003ec68b40
[ 3344.972984] RBP: ffff880006b01408 R08: b000000000000000 R09: 0000000000000000
[ 3344.972984] R10: ffff880006b01918 R11: 0000000000000000 R12: ffff88003ec688d8
[ 3344.972984] R13: 0000000000001000 R14: 00000000001aeeb3 R15: ffff88003ec688d8
[ 3344.972984] FS: 0000000000000000(0000) GS:ffff88003f801a80(0063) knlGS:00000
[ 3344.972984] CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b
[ 3344.972984] CR2: 0000000000b9dea0 CR3: 0000000006ae3000 CR4: 00000000000006a0
[ 3344.972984] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3344.972984] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 3344.972984] Process hackbench (pid: 11127, threadinfo ffff880006b00000, task)
[ 3344.972984] Stack:
[ 3344.972984] ffff880006b01468 ffffffff8118d26a ffff88001f7e8000 0000000000001
[ 3344.972984] ffff88001bc33500 0001121000000010 0000000000000047 ffff88001bc30
[ 3344.972984] ffff88001bc33500 ffff88003ec688d8 00000000001aeeb3 ffff88003ec68
[ 3344.972984] Call Trace:
[ 3344.972984] [<ffffffff8118d26a>] __make_request+0x3e/0x412
[ 3344.972984] [<ffffffff8118bf77>] generic_make_request+0x279/0x2c3
[ 3344.972984] [<ffffffff8119f189>] ? radix_tree_tag_set+0x6b/0xce
[ 3344.972984] [<ffffffff8118c087>] submit_bio+0xc6/0xcf
[ 3344.972984] [<ffffffff8107feb8>] ? unlock_page+0x22/0x26
[ 3344.972984] [<ffffffff8109ebd4>] swap_writepage+0xa2/0xac
[ 3344.972984] [<ffffffff8108a076>] shrink_page_list+0x3a7/0x67b
[ 3344.972984] [<ffffffff810376f1>] ? finish_task_switch+0x68/0x88
[ 3344.972984] [<ffffffff8101b822>] ? __cpus_empty+0x9/0xb
[ 3344.972984] [<ffffffff8101ba27>] ? flush_tlb_page+0x66/0x83
[ 3344.972984] [<ffffffff814908b3>] ? thread_return+0x3d/0xc6
[ 3344.972984] [<ffffffff8108a98d>] shrink_list+0x29d/0x59f
[ 3344.972984] [<ffffffff81086c4f>] ? get_dirty_limits+0x22/0x24a
[ 3344.972984] [<ffffffff8108af10>] shrink_zone+0x281/0x32b
[ 3344.972984] [<ffffffff8119ff8e>] ? __up_read+0x92/0x9c
[ 3344.972984] [<ffffffff8108b100>] ? shrink_slab+0x146/0x158
[ 3344.972984] [<ffffffff8108c022>] try_to_free_pages+0x23d/0x38f
[ 3344.972984] [<ffffffff81089185>] ? isolate_pages_global+0x0/0x219
[ 3344.972984] [<ffffffff81085cc9>] __alloc_pages_internal+0x292/0x43d
[ 3344.972984] [<ffffffff810a6963>] alloc_pages_current+0xb9/0xc2
[ 3344.972984] [<ffffffff810aa658>] alloc_slab_page+0x19/0x69
[ 3344.972984] [<ffffffff810aa6f1>] new_slab+0x49/0x1cc
[ 3344.972984] [<ffffffff8119f8b1>] ? rb_insert_color+0xbd/0xe6
[ 3344.972984] [<ffffffff810aaad3>] __slab_alloc+0x1f3/0x36c
[ 3344.972984] [<ffffffff81389fe8>] ? __alloc_skb+0x42/0x130
[ 3344.972984] [<ffffffff81389fe8>] ? __alloc_skb+0x42/0x130
[ 3344.972984] [<ffffffff810aaf7c>] kmem_cache_alloc_node+0x69/0xa2
[ 3344.972984] [<ffffffff81389fe8>] __alloc_skb+0x42/0x130
[ 3344.972984] [<ffffffff81385bd3>] sock_alloc_send_skb+0xa1/0x200
[ 3344.972984] [<ffffffff8116700a>] ? security_socket_getpeersec_dgram+0x11/0x3
[ 3344.972984] [<ffffffff81409250>] unix_stream_sendmsg+0x138/0x2b5
[ 3344.972984] [<ffffffff8138276b>] __sock_sendmsg+0x59/0x62
[ 3344.972984] [<ffffffff8138285c>] sock_aio_write+0xe8/0xf8
[ 3344.972984] [<ffffffff810af9a2>] do_sync_write+0xe7/0x12d
[ 3344.972984] [<ffffffff8104d980>] ? autoremove_wake_function+0x0/0x38
[ 3344.972984] [<ffffffff8116d9da>] ? selinux_file_permission+0xbd/0xc6
[ 3344.972984] [<ffffffff811669d0>] ? security_file_permission+0x11/0x13
[ 3344.972984] [<ffffffff810b029a>] vfs_write+0xbe/0x105
[ 3344.972984] [<ffffffff810b03a5>] sys_write+0x47/0x6f
[ 3344.972984] [<ffffffff8102bba8>] sysenter_dispatch+0x7/0x27
[ 3344.972984] Code: 01 00 00 f0 66 0f c1 17 38 f2 74 06 f3 90 8a 17 eb f6 c9 c
[ 3344.972984] BUG: NMI Watchdog detected LOCKUP<4>---[ end trace 820f38a7b2441-
[ 3344.972984] on CPU0, ip ffffffff81491f6c, registers:
[ 3344.972984] CPU 0
[ 3344.972984] Modules linked in:
[ 3344.972984] Pid: 742, comm: scsi_eh_2 Tainted: G D 2.6.29-rc3 #219
[ 3344.972984] RIP: 0010:[<ffffffff81491f6c>] [<ffffffff81491f6c>] _spin_lock+a
[ 3344.972984] RSP: 0018:ffffffff81856e38 EFLAGS: 00000097
[ 3344.972984] RAX: 0000000000003a39 RBX: ffff88003ec5c400 RCX: 0000000000002002
[ 3344.972984] RDX: 0000000000000707 RSI: 0000000000000000 RDI: ffff88003ec68b40
[ 3344.972984] RBP: ffffffff81856e38 R08: ffff88003edb6000 R09: ffff88003ee85480
[ 3344.972984] R10: 0000000000000012 R11: ffffffff8176cd00 R12: ffff88003ee7e800
[ 3344.972984] R13: ffff88003ee7f000 R14: 0000000000000286 R15: 000000000000000a
[ 3344.972984] FS: 0000000000000000(0000) GS:ffffffff8185f080(0000) knlGS:00000
[ 3344.972984] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[ 3344.972984] CR2: 0000000000b9dea0 CR3: 000000002f514000 CR4: 00000000000006a0
[ 3344.972984] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3344.972984] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 3344.972984] Process scsi_eh_2 (pid: 742, threadinfo ffff88003edb6000, task f)
[ 3344.972984] Stack:
[ 3344.972984] ffffffff81856e68 ffffffff812908a0 ffff88003ec5c428 ffff88003ee70
[ 3344.972984] ffff88003ee7e800 ffff880013dda100 ffffffff81856e98 ffffffff8128c
[ 3344.972984] ffff880013dda100 0000000000007530 0000000000000005 ffffffff81840
[ 3344.972984] Call Trace:
[ 3344.972984] <IRQ> <0> [<ffffffff812908a0>] scsi_device_unbusy+0x87/0xa7
[ 3344.972984] [<ffffffff8128b04c>] scsi_finish_command+0x25/0xb6
[ 3344.972984] [<ffffffff81290e92>] scsi_softirq_done+0x103/0x10b
[ 3344.972984] [<ffffffff8119042d>] blk_done_softirq+0x69/0x79
[ 3344.972984] [<ffffffff8103fb3f>] __do_softirq+0x83/0x144
[ 3344.972984] [<ffffffff8100d33c>] call_softirq+0x1c/0x28
[ 3344.972984] [<ffffffff8100e258>] do_softirq+0x34/0x76
[ 3344.972984] [<ffffffff8103f8d5>] irq_exit+0x3f/0x79
[ 3344.972984] [<ffffffff8100e51b>] do_IRQ+0x130/0x155
[ 3344.972984] [<ffffffff8100cc13>] ret_from_intr+0x0/0xa
[ 3344.972984] <EOI> <0>Code: c9 c3 55 48 89 e5 fa f0 81 2f 00 00 00 01 74 05
[ 3344.972984] ---[ end trace 820f38a7b2441dd8 ]---
[ 3350.650441] Kernel panic - not syncing: Aiee, killing interrupt handler!
I know the log is chopped at 80 chars; that's my bad for not logging
to file, but just copying out of the terminal :-(
Vegard
--
"The animistic metaphor of the bug that maliciously sneaked in while
the programmer was not looking is intellectually dishonest as it
disguises that the error is the programmer's own creation."
-- E. W. Dijkstra, EWD1036
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: 2.6.29-rc3: BUG: NMI Watchdog detected LOCKUP
2009-02-08 10:21 2.6.29-rc3: BUG: NMI Watchdog detected LOCKUP Vegard Nossum
@ 2009-02-13 0:19 ` Andrew Morton
2009-02-13 8:31 ` Ingo Molnar
0 siblings, 1 reply; 3+ messages in thread
From: Andrew Morton @ 2009-02-13 0:19 UTC (permalink / raw)
To: Vegard Nossum; +Cc: linux-kernel, linux-usb, Jens Axboe, linux-scsi
On Sun, 8 Feb 2009 11:21:20 +0100
Vegard Nossum <vegard.nossum@gmail.com> wrote:
> Hi,
>
> Not sure exactly what happened here. Was running LTP, and it seems
> that the USB flash disk (which held the root device, though I was
> running LTP in a chroot on a fixed harddisk) disconnect, although I
> didn't touch it.
>
> [ 3344.890073] usb 1-6: unregistering interface 1-6:1.0
> [ 3344.895744] sd 2:0:0:0: Device offlined - not ready after error recovery
> [ 3344.902893] sd 2:0:0:0: [sdb] Unhandled error code
> [ 3344.908051] sd 2:0:0:0: [sdb] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK
> [ 3344.916810] end_request: I/O error, dev sdb, sector 1735619
> [ 3344.922746] Write-error on swap-device (8:16:1735627)
> [ 3344.928195] Write-error on swap-device (8:16:1735635)
> [ 3344.933611] Write-error on swap-device (8:16:1735643)
> [ 3344.939020] Write-error on swap-device (8:16:1735651)
> [ 3344.944427] Write-error on swap-device (8:16:1735659)
> [ 3344.949836] Write-error on swap-device (8:16:1735667)
> [ 3344.955320] Write-error on swap-device (8:16:1735675)
> [ 3344.960757] sd 2:0:0:0: rejecting I/O to offline device
> [ 3344.961735] sd 2:0:0:0: rejecting I/O to offline device
Presumably the device layer (USB or scsi) shat itself. Bad hardware or
a kernel bug?
> [ 3344.972984] BUG: NMI Watchdog detected LOCKUP on CPU1, ip ffffffff81491f02, :
> [ 3344.972984] CPU 1
> [ 3344.972984] Modules linked in:
> [ 3344.972984] Pid: 11127, comm: hackbench Not tainted 2.6.29-rc3 #219
> [ 3344.972984] RIP: 0010:[<ffffffff81491f02>] [<ffffffff81491f02>] _spin_lock_b
> [ 3344.972984] RSP: 0018:ffff880006b01408 EFLAGS: 00000093
> [ 3344.972984] RAX: 0000000000003b39 RBX: 0000000000000001 RCX: 6db6db6db6db6db7
> [ 3344.972984] RDX: ffff88003ec688d8 RSI: ffff880006b01428 RDI: ffff88003ec68b40
> [ 3344.972984] RBP: ffff880006b01408 R08: b000000000000000 R09: 0000000000000000
> [ 3344.972984] R10: ffff880006b01918 R11: 0000000000000000 R12: ffff88003ec688d8
> [ 3344.972984] R13: 0000000000001000 R14: 00000000001aeeb3 R15: ffff88003ec688d8
> [ 3344.972984] FS: 0000000000000000(0000) GS:ffff88003f801a80(0063) knlGS:00000
> [ 3344.972984] CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b
> [ 3344.972984] CR2: 0000000000b9dea0 CR3: 0000000006ae3000 CR4: 00000000000006a0
> [ 3344.972984] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 3344.972984] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [ 3344.972984] Process hackbench (pid: 11127, threadinfo ffff880006b00000, task)
> [ 3344.972984] Stack:
> [ 3344.972984] ffff880006b01468 ffffffff8118d26a ffff88001f7e8000 0000000000001
> [ 3344.972984] ffff88001bc33500 0001121000000010 0000000000000047 ffff88001bc30
> [ 3344.972984] ffff88001bc33500 ffff88003ec688d8 00000000001aeeb3 ffff88003ec68
> [ 3344.972984] Call Trace:
> [ 3344.972984] [<ffffffff8118d26a>] __make_request+0x3e/0x412
> [ 3344.972984] [<ffffffff8118bf77>] generic_make_request+0x279/0x2c3
> [ 3344.972984] [<ffffffff8119f189>] ? radix_tree_tag_set+0x6b/0xce
> [ 3344.972984] [<ffffffff8118c087>] submit_bio+0xc6/0xcf
> [ 3344.972984] [<ffffffff8107feb8>] ? unlock_page+0x22/0x26
> [ 3344.972984] [<ffffffff8109ebd4>] swap_writepage+0xa2/0xac
> [ 3344.972984] [<ffffffff8108a076>] shrink_page_list+0x3a7/0x67b
> [ 3344.972984] [<ffffffff810376f1>] ? finish_task_switch+0x68/0x88
> [ 3344.972984] [<ffffffff8101b822>] ? __cpus_empty+0x9/0xb
> [ 3344.972984] [<ffffffff8101ba27>] ? flush_tlb_page+0x66/0x83
> [ 3344.972984] [<ffffffff814908b3>] ? thread_return+0x3d/0xc6
> [ 3344.972984] [<ffffffff8108a98d>] shrink_list+0x29d/0x59f
> [ 3344.972984] [<ffffffff81086c4f>] ? get_dirty_limits+0x22/0x24a
> [ 3344.972984] [<ffffffff8108af10>] shrink_zone+0x281/0x32b
> [ 3344.972984] [<ffffffff8119ff8e>] ? __up_read+0x92/0x9c
> [ 3344.972984] [<ffffffff8108b100>] ? shrink_slab+0x146/0x158
> [ 3344.972984] [<ffffffff8108c022>] try_to_free_pages+0x23d/0x38f
> [ 3344.972984] [<ffffffff81089185>] ? isolate_pages_global+0x0/0x219
> [ 3344.972984] [<ffffffff81085cc9>] __alloc_pages_internal+0x292/0x43d
> [ 3344.972984] [<ffffffff810a6963>] alloc_pages_current+0xb9/0xc2
> [ 3344.972984] [<ffffffff810aa658>] alloc_slab_page+0x19/0x69
> [ 3344.972984] [<ffffffff810aa6f1>] new_slab+0x49/0x1cc
> [ 3344.972984] [<ffffffff8119f8b1>] ? rb_insert_color+0xbd/0xe6
> [ 3344.972984] [<ffffffff810aaad3>] __slab_alloc+0x1f3/0x36c
> [ 3344.972984] [<ffffffff81389fe8>] ? __alloc_skb+0x42/0x130
> [ 3344.972984] [<ffffffff81389fe8>] ? __alloc_skb+0x42/0x130
> [ 3344.972984] [<ffffffff810aaf7c>] kmem_cache_alloc_node+0x69/0xa2
> [ 3344.972984] [<ffffffff81389fe8>] __alloc_skb+0x42/0x130
> [ 3344.972984] [<ffffffff81385bd3>] sock_alloc_send_skb+0xa1/0x200
> [ 3344.972984] [<ffffffff8116700a>] ? security_socket_getpeersec_dgram+0x11/0x3
> [ 3344.972984] [<ffffffff81409250>] unix_stream_sendmsg+0x138/0x2b5
> [ 3344.972984] [<ffffffff8138276b>] __sock_sendmsg+0x59/0x62
> [ 3344.972984] [<ffffffff8138285c>] sock_aio_write+0xe8/0xf8
> [ 3344.972984] [<ffffffff810af9a2>] do_sync_write+0xe7/0x12d
> [ 3344.972984] [<ffffffff8104d980>] ? autoremove_wake_function+0x0/0x38
> [ 3344.972984] [<ffffffff8116d9da>] ? selinux_file_permission+0xbd/0xc6
> [ 3344.972984] [<ffffffff811669d0>] ? security_file_permission+0x11/0x13
> [ 3344.972984] [<ffffffff810b029a>] vfs_write+0xbe/0x105
> [ 3344.972984] [<ffffffff810b03a5>] sys_write+0x47/0x6f
> [ 3344.972984] [<ffffffff8102bba8>] sysenter_dispatch+0x7/0x27
> [ 3344.972984] Code: 01 00 00 f0 66 0f c1 17 38 f2 74 06 f3 90 8a 17 eb f6 c9 c
> [ 3344.972984] BUG: NMI Watchdog detected LOCKUP<4>---[ end trace 820f38a7b2441-
> [ 3344.972984] on CPU0, ip ffffffff81491f6c, registers:
And then the block layer died. Looks like it was trying to take the
queue lock. Probably against the recently-offlined device.
I'd say that either someone forgot to release the lock on an error
path. Or the structure was freed, but the kernel still tries to use it.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: 2.6.29-rc3: BUG: NMI Watchdog detected LOCKUP
2009-02-13 0:19 ` Andrew Morton
@ 2009-02-13 8:31 ` Ingo Molnar
0 siblings, 0 replies; 3+ messages in thread
From: Ingo Molnar @ 2009-02-13 8:31 UTC (permalink / raw)
To: Andrew Morton
Cc: Vegard Nossum, linux-kernel, linux-usb, Jens Axboe, linux-scsi
* Andrew Morton <akpm@linux-foundation.org> wrote:
> > [ 3344.972984] Call Trace:
> > [ 3344.972984] [<ffffffff8118d26a>] __make_request+0x3e/0x412
> > [ 3344.972984] [<ffffffff8118bf77>] generic_make_request+0x279/0x2c3
> > [ 3344.972984] [<ffffffff8119f189>] ? radix_tree_tag_set+0x6b/0xce
> > [ 3344.972984] [<ffffffff8118c087>] submit_bio+0xc6/0xcf
> > [ 3344.972984] [<ffffffff8107feb8>] ? unlock_page+0x22/0x26
> > [ 3344.972984] [<ffffffff8109ebd4>] swap_writepage+0xa2/0xac
> > [ 3344.972984] [<ffffffff8108a076>] shrink_page_list+0x3a7/0x67b
> > [ 3344.972984] [<ffffffff810376f1>] ? finish_task_switch+0x68/0x88
> > [ 3344.972984] [<ffffffff8101b822>] ? __cpus_empty+0x9/0xb
> > [ 3344.972984] [<ffffffff8101ba27>] ? flush_tlb_page+0x66/0x83
> > [ 3344.972984] [<ffffffff814908b3>] ? thread_return+0x3d/0xc6
> > [ 3344.972984] [<ffffffff8108a98d>] shrink_list+0x29d/0x59f
> > [ 3344.972984] [<ffffffff81086c4f>] ? get_dirty_limits+0x22/0x24a
> > [ 3344.972984] [<ffffffff8108af10>] shrink_zone+0x281/0x32b
> > [ 3344.972984] [<ffffffff8119ff8e>] ? __up_read+0x92/0x9c
> > [ 3344.972984] [<ffffffff8108b100>] ? shrink_slab+0x146/0x158
> > [ 3344.972984] [<ffffffff8108c022>] try_to_free_pages+0x23d/0x38f
> > [ 3344.972984] [<ffffffff81089185>] ? isolate_pages_global+0x0/0x219
> > [ 3344.972984] [<ffffffff81085cc9>] __alloc_pages_internal+0x292/0x43d
> > [ 3344.972984] [<ffffffff810a6963>] alloc_pages_current+0xb9/0xc2
> > [ 3344.972984] [<ffffffff810aa658>] alloc_slab_page+0x19/0x69
> > [ 3344.972984] [<ffffffff810aa6f1>] new_slab+0x49/0x1cc
> > [ 3344.972984] [<ffffffff8119f8b1>] ? rb_insert_color+0xbd/0xe6
> > [ 3344.972984] [<ffffffff810aaad3>] __slab_alloc+0x1f3/0x36c
> > [ 3344.972984] [<ffffffff81389fe8>] ? __alloc_skb+0x42/0x130
> > [ 3344.972984] [<ffffffff81389fe8>] ? __alloc_skb+0x42/0x130
> > [ 3344.972984] [<ffffffff810aaf7c>] kmem_cache_alloc_node+0x69/0xa2
> > [ 3344.972984] [<ffffffff81389fe8>] __alloc_skb+0x42/0x130
> > [ 3344.972984] [<ffffffff81385bd3>] sock_alloc_send_skb+0xa1/0x200
> > [ 3344.972984] [<ffffffff8116700a>] ? security_socket_getpeersec_dgram+0x11/0x3
> > [ 3344.972984] [<ffffffff81409250>] unix_stream_sendmsg+0x138/0x2b5
> > [ 3344.972984] [<ffffffff8138276b>] __sock_sendmsg+0x59/0x62
> > [ 3344.972984] [<ffffffff8138285c>] sock_aio_write+0xe8/0xf8
> > [ 3344.972984] [<ffffffff810af9a2>] do_sync_write+0xe7/0x12d
> > [ 3344.972984] [<ffffffff8104d980>] ? autoremove_wake_function+0x0/0x38
> > [ 3344.972984] [<ffffffff8116d9da>] ? selinux_file_permission+0xbd/0xc6
> > [ 3344.972984] [<ffffffff811669d0>] ? security_file_permission+0x11/0x13
> > [ 3344.972984] [<ffffffff810b029a>] vfs_write+0xbe/0x105
> > [ 3344.972984] [<ffffffff810b03a5>] sys_write+0x47/0x6f
> > [ 3344.972984] [<ffffffff8102bba8>] sysenter_dispatch+0x7/0x27
> > [ 3344.972984] Code: 01 00 00 f0 66 0f c1 17 38 f2 74 06 f3 90 8a 17 eb f6 c9 c
> > [ 3344.972984] BUG: NMI Watchdog detected LOCKUP<4>---[ end trace 820f38a7b2441-
> > [ 3344.972984] on CPU0, ip ffffffff81491f6c, registers:
>
> And then the block layer died. Looks like it was trying to take the
> queue lock. Probably against the recently-offlined device.
>
> I'd say that either someone forgot to release the lock on an error
> path. Or the structure was freed, but the kernel still tries to use it.
Should run with CONFIG_PROVE_LOCKING=y for more precise forensics about
precisely who did that and when.
Or if this was with lockdep enabled already, some other modes of failure
should be considered too. (such as memory corruption)
Ingo
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2009-02-13 8:31 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-02-08 10:21 2.6.29-rc3: BUG: NMI Watchdog detected LOCKUP Vegard Nossum
2009-02-13 0:19 ` Andrew Morton
2009-02-13 8:31 ` Ingo Molnar
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