I hit this bug when trying to mount a md multipath device. mdadm creates it
fine, but when I go to mount the device it oops.
Kernel : 2.6.0-test5
ksymoops 2.4.4 on i686 2.6.0-test5. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.6.0-test5/ (default)
-m /boot/System.map-2.6.0-test5 (default)
Warning: You did not tell me where to find symbol information. I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc. ksymoops -h explains the options.
Error (regular_file): read_ksyms stat /proc/ksyms failed
No modules in ksyms, skipping objects
No ksyms, skipping lsmod
Sep 22 11:06:23 linuxha1 kernel: kernel BUG at drivers/scsi/scsi_lib.c:544!
Sep 22 11:06:23 linuxha1 kernel: invalid operand: 0000 [#1]
Sep 22 11:06:23 linuxha1 kernel: CPU: 1
Sep 22 11:06:23 linuxha1 kernel: EIP: 0060:[<c0232115>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
Sep 22 11:06:23 linuxha1 kernel: EFLAGS: 00010046
Sep 22 11:06:23 linuxha1 kernel: eax: 00000000 ebx: f6cab1b0 ecx: c2707c00 edx: f6d08d20
Sep 22 11:06:23 linuxha1 kernel: esi: 00000020 edi: f6d08d20 ebp: f6cab1b0 esp: f6aa1d2c
Sep 22 11:06:23 linuxha1 kernel: ds: 007b es: 007b ss: 0068
Sep 22 11:06:23 linuxha1 kernel: Stack: 00000020 f6cab1b0 00000020 f6d08d20 f6cab1b0 c02326fb f6d08d20 00000020
Sep 22 11:06:23 linuxha1 kernel: f6d08d20 00000020 c2707c00 c023289d f6d08d20 f6cab1b0 f6e75e00 f6aa1dac
Sep 22 11:06:23 linuxha1 kernel: f69e7124 c01f1cf4 f6e75e00 f6cab1b0 f6e75e00 f6e75f50 c01f34d5 f6e75e00
Sep 22 11:06:23 linuxha1 kernel: [<c02326fb>] scsi_init_io+0x5b/0x110
Sep 22 11:06:23 linuxha1 kernel: [<c023289d>] scsi_prep_fn+0xed/0x150
Sep 22 11:06:23 linuxha1 kernel: [<c01f1cf4>] elv_next_request+0x14/0xe0
Sep 22 11:06:23 linuxha1 kernel: [<c01f34d5>] generic_unplug_device+0x45/0x70
Sep 22 11:06:23 linuxha1 kernel: [<c01380bf>] do_page_cache_readahead+0x14f/0x170
Sep 22 11:06:23 linuxha1 kernel: [<c01f3615>] blk_run_queues+0x75/0xa0
Sep 22 11:06:23 linuxha1 kernel: [<c01512c5>] block_sync_page+0x5/0x10
Sep 22 11:06:23 linuxha1 kernel: [<c01326bf>] __lock_page+0xaf/0xe0
Sep 22 11:06:23 linuxha1 kernel: [<c0118dc0>] autoremove_wake_function+0x0/0x40
Sep 22 11:06:23 linuxha1 kernel: [<c01381b5>] page_cache_readahead+0xd5/0x150
Sep 22 11:06:23 linuxha1 kernel: [<c0118dc0>] autoremove_wake_function+0x0/0x40
Sep 22 11:06:23 linuxha1 kernel: [<c0132baf>] do_generic_mapping_read+0x1cf/0x3a0
Sep 22 11:06:23 linuxha1 kernel: [<c0132d80>] file_read_actor+0x0/0xd0
Sep 22 11:06:23 linuxha1 kernel: [<c0133045>] __generic_file_aio_read+0x1f5/0x220
Sep 22 11:06:23 linuxha1 kernel: [<c0132d80>] file_read_actor+0x0/0xd0
Sep 22 11:06:23 linuxha1 kernel: [<c0133138>] generic_file_read+0x78/0xa0
Sep 22 11:06:23 linuxha1 kernel: [<c0154092>] do_open+0xf2/0x3a0
Sep 22 11:06:23 linuxha1 kernel: [<c0153bcb>] bdget+0xfb/0x110
Sep 22 11:06:23 linuxha1 kernel: [<c01543e6>] blkdev_open+0x26/0x60
Sep 22 11:06:23 linuxha1 kernel: [<c014bf2b>] dentry_open+0xeb/0x1c0
Sep 22 11:06:23 linuxha1 kernel: [<c014ca7a>] vfs_read+0xaa/0xe0
Sep 22 11:06:23 linuxha1 kernel: [<c0153830>] block_llseek+0x0/0xe0
Sep 22 11:06:23 linuxha1 kernel: [<c014c8f5>] sys_llseek+0xb5/0xe0
Sep 22 11:06:23 linuxha1 kernel: [<c014cc6f>] sys_read+0x2f/0x50
Sep 22 11:06:23 linuxha1 kernel: [<c0108ff3>] syscall_call+0x7/0xb
Sep 22 11:06:23 linuxha1 kernel: Code: 0f 0b 20 02 05 64 2d c0 0f b7 82 9e 00 00 00 83 f8 20 7f 1d
>>EIP; c0232115 <scsi_alloc_sgtable+15/f0> <=====
Code; c0232115 <scsi_alloc_sgtable+15/f0>
00000000 <_EIP>:
Code; c0232115 <scsi_alloc_sgtable+15/f0> <=====
0: 0f 0b ud2a <=====
Code; c0232117 <scsi_alloc_sgtable+17/f0>
2: 20 02 and %al,(%edx)
Code; c0232119 <scsi_alloc_sgtable+19/f0>
4: 05 64 2d c0 0f add $0xfc02d64,%eax
Code; c023211e <scsi_alloc_sgtable+1e/f0>
9: b7 82 mov $0x82,%bh
Code; c0232120 <scsi_alloc_sgtable+20/f0>
b: 9e sahf
Code; c0232121 <scsi_alloc_sgtable+21/f0>
c: 00 00 add %al,(%eax)
Code; c0232123 <scsi_alloc_sgtable+23/f0>
e: 00 83 f8 20 7f 1d add %al,0x1d7f20f8(%ebx)
1 warning and 1 error issued. Results may not be reliable.
Andy