Jun 5 20:34:11 box kernel: ------------[ cut here ]------------
Jun 5 20:34:11 box kernel: kernel BUG at fs/ext4/inode.c:2188!
Jun 5 20:34:11 box kernel: invalid opcode: 0000 [#1] PREEMPT SMP
Jun 5 20:34:11 box kernel: last sysfs file:
/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.
0/host7/target7:0:0/7:0:0:0/block/sdc/dev
Jun 5 20:34:11 box kernel: Modules linked in:
Jun 5 20:34:11 box kernel:
Jun 5 20:34:11 box kernel: Pid: 13696, comm: flush-8:32 Not tainted
2.6.38.7 #2 To Be Filled By
O.E.M. To Be Filled By O.E.M./P4P800
Jun 5 20:34:12 box kernel: EIP: 0060:[<c1106622>] EFLAGS: 00010246 CPU: 1
Jun 5 20:34:12 box kernel: EIP is at mpage_da_map_and_submit+0x56c/0x5ba
Jun 5 20:34:12 box kernel: EAX: 40000024 EBX: dfe17e00 ECX: 0000000e
EDX: 00000000
Jun 5 20:34:12 box kernel: ESI: 001b4800 EDI: 001b4fff EBP: c1dafd4c
ESP: c1dafcb0
Jun 5 20:34:12 box kernel: DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Jun 5 20:34:12 box kernel: Process flush-8:32 (pid: 13696, ti=c1dae000
task=df2a0f40 task.ti=c1d
ae000)
Jun 5 20:34:12 box kernel: Stack:
Jun 5 20:34:12 box kernel: 0000000e c14898ca c1494b28 00000015 001b4800
00000000 00000800 ffffff
fb
Jun 5 20:34:12 box kernel: 0000000c 00000000 001b500a 00000000 dedfe390
0000000e 00000000 000000
0e
Jun 5 20:34:12 box kernel: 00000004 dfe17e00 dfcd8220 dfdbe980 dfd0bc40
dfbed540 dfca32e0 dfe94c
c0
Jun 5 20:34:12 box kernel: Call Trace:
Jun 5 20:34:12 box kernel: [<c11066c0>] mpage_add_bh_to_extent+0x50/0xdd
Jun 5 20:34:12 box kernel: [<c110696c>] write_cache_pages_da+0x21f/0x312
Jun 5 20:34:12 box kernel: [<c1106c97>] ext4_da_writepages+0x238/0x45f
Jun 5 20:34:12 box kernel: [<c1070335>] do_writepages+0x17/0x2d
Jun 5 20:34:12 box kernel: [<c10afa73>] writeback_single_inode+0x78/0x1b1
Jun 5 20:34:12 box kernel: [<c10aff7d>] writeback_sb_inodes+0x86/0x118
Jun 5 20:34:12 box kernel: [<c10b0691>] wb_writeback+0x162/0x235
Jun 5 20:34:12 box kernel: [<c107057e>] ? global_dirty_limits+0x23/0xb9
Jun 5 20:34:12 box kernel: [<c10b07c9>] wb_do_writeback+0x65/0x191
Jun 5 20:34:12 box kernel: [<c10b0958>] bdi_writeback_thread+0x63/0x10b
Jun 5 20:34:12 box kernel: [<c10b08f5>] ? bdi_writeback_thread+0x0/0x10b
Jun 5 20:34:12 box kernel: [<c10406a0>] kthread+0x68/0x6a
Jun 5 20:34:12 box kernel: [<c1040638>] ? kthread+0x0/0x6a
Jun 5 20:34:12 box kernel: [<c1002fb6>] kernel_thread_helper+0x6/0x10
Jun 5 20:34:12 box kernel: Code: 24 04 c7 04 24 80 a0 48 c1 e8 f2 42 2d
00 8b 86 08 02 00 00 89 44 24 04 c7 04 24 9e a0 48 c1 e8 dc 42 2d 00 8b
03 e9 64 fd ff ff <0f> 0b eb fe 0f 0b eb fe 89 f0 e8 98 44 ff ff 09 c2
75 07 8b 03
Jun 5 20:34:12 box kernel: EIP: [<c1106622>]
mpage_da_map_and_submit+0x56c/0x5ba SS:ESP 0068:c1dafcb0
Jun 5 20:34:12 box kernel: JBD2: Detected IO errors while flushing file
data on sdc1-8
Jun 5 20:34:12 box kernel: Aborting journal on device sdc1-8.
Jun 5 20:34:12 box kernel: JBD2: I/O error detected when updating
journal superblock for sdc1-8.
Jun 5 20:34:12 box kernel: ---[ end trace 736424b87d636c31 ]---
Were there any messages in the syslog before this relating to ext4 or
jbd2?
> Jun 5 20:34:12 box kernel: JBD2: Detected IO errors while flushing file
> data on sdc1-8
> Jun 5 20:34:12 box kernel: Aborting journal on device sdc1-8.
> Jun 5 20:34:12 box kernel: JBD2: I/O error detected when updating
> journal superblock for sdc1-8.
For example, anything like these messages *before* the oops messages?
- Ted
On 06/06/2011 12:47 AM, Ted Ts'o wrote:
> Were there any messages in the syslog before this relating to ext4 or
> jbd2?
>
>> Jun 5 20:34:12 box kernel: JBD2: Detected IO errors while flushing file
>> data on sdc1-8
>> Jun 5 20:34:12 box kernel: Aborting journal on device sdc1-8.
>> Jun 5 20:34:12 box kernel: JBD2: I/O error detected when updating
>> journal superblock for sdc1-8.
>
> For example, anything like these messages *before* the oops messages?
>
> - Ted
Of course. I am attaching all relevant log.
The box had a USB disk attached. Unfortunately the USB code detected
only a slow link:
Jun 3 08:36:26 box kernel: usb 2-1: not running at top speed; connect
to a high speed hub
A job was still copying a large file when I disconnected the disk
accidentially two hours later. Of course ext4 didn't like that. But
clearly the Oops should not have happened.
Thanks.
Ortwin