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Hi.
A machine, running for quite a ~2 months stably now, just crashed with a
kernel panic leaving pretty strange messages, like
swap_free: Unused swap offset entry 00001000
swap_dup: Bad swap file entry 00000020
and
memory.c:306: bad pmd c30b63e8(0000000028d2d027)
memory.c:306: bad pmd c30b6488(000000002b891066)
in the logs...
I am not sure whether this is a memory problem or a kernel bug... oops+
relevant part of the logfile is attached.
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May 4 22:34:51 rumba kernel: swap_free: Bad swap file entry 00000040
May 4 23:00:57 rumba kernel: VM: killing process sshd
May 4 23:00:57 rumba kernel: swap_free: Unused swap offset entry 00002000
May 4 23:00:57 rumba kernel: swap_free: Unused swap offset entry 00008000
May 4 23:00:57 rumba kernel: swap_free: Unused swap offset entry 00002000
May 4 23:05:57 rumba kernel: VM: killing process sshd
May 4 23:05:57 rumba kernel: swap_free: Unused swap offset entry 00000100
May 4 23:10:57 rumba kernel: VM: killing process sshd
May 4 23:10:57 rumba kernel: swap_free: Unused swap offset entry 00000100
May 4 23:10:57 rumba kernel: swap_free: Unused swap offset entry 00001000
May 4 23:15:43 rumba kernel: swap_dup: Bad swap file entry 00000020
May 4 23:15:43 rumba kernel: swap_dup: Bad swap file entry 00000020
May 4 23:15:43 rumba kernel: swap_dup: Bad swap file entry 00000008
May 4 23:15:43 rumba kernel: swap_free: Bad swap file entry 00000020
May 4 23:15:43 rumba kernel: swap_free: Bad swap file entry 00000020
May 4 23:15:43 rumba kernel: swap_free: Unused swap offset entry 00008800
May 4 23:15:43 rumba kernel: swap_free: Unused swap offset entry 00008000
May 4 23:15:43 rumba kernel: swap_free: Unused swap offset entry 00008000
May 4 23:15:43 rumba kernel: swap_free: Bad swap file entry 00000008
May 4 23:15:43 rumba kernel: swap_free: Bad swap file entry 00000020
May 4 23:15:43 rumba kernel: swap_free: Bad swap file entry 00000020
May 4 23:15:44 rumba kernel: swap_free: Unused swap offset entry 00008800
May 4 23:15:44 rumba kernel: swap_free: Unused swap offset entry 00008000
May 4 23:15:44 rumba kernel: swap_free: Unused swap offset entry 00008000
May 4 23:15:44 rumba kernel: swap_free: Bad swap file entry 00000008
May 5 01:40:46 rumba kernel: Unable to handle kernel paging request at virtual address 80cece43
May 5 01:40:46 rumba kernel: printing eip:
May 5 01:40:46 rumba kernel: c013e6f8
May 5 01:40:46 rumba kernel: *pde = c3c9f045
May 5 01:40:46 rumba kernel: Unable to handle kernel paging request at virtual address 83c9f3b0
May 5 01:40:46 rumba kernel: printing eip:
May 5 01:40:46 rumba kernel: c0117ee8
May 5 01:40:46 rumba kernel: *pde = 00047883
May 5 01:40:46 rumba kernel: *pte = 00000000
May 5 01:40:46 rumba kernel: Oops: 0000
May 5 01:40:46 rumba kernel: CPU: 1
May 5 01:40:46 rumba kernel: EIP: 0010:[<c0117ee8>] Not tainted
May 5 01:40:46 rumba kernel: EFLAGS: 00010212
May 5 01:40:46 rumba kernel: eax: 00000013 ebx: c3c9f000 ecx: c029d628 edx: 00003af8
May 5 01:40:46 rumba kernel: esi: 00000000 edi: f7bcfec0 ebp: 000000ec esp: f7bcfdfc
May 5 01:40:46 rumba kernel: ds: 0018 es: 0018 ss: 0018
May 5 01:40:46 rumba kernel: Process kupdated (pid: 7, stackpage=f7bcf000)
May 5 01:40:46 rumba kernel: Stack: f7bce000 00000000 c0117ba0 00001e73 c02474e5 f2b14040 00000080 00000080
May 5 01:40:46 rumba kernel: c0248c98 f7bce000 ea8c2b40 ea8c2b40 f2b14884 f2b14000 f7bcff3c 00000080
May 5 01:40:46 rumba kernel: 00030001 000001f6 f2b278e0 00000000 f2b14000 00000000 00000000 c01f2c4e
May 5 01:40:46 rumba kernel: Call Trace: [<c0117ba0>] [<c02474e5>] [<c0248c98>] [<c01f2c4e>] [<c01f7074>]
May 5 01:40:46 rumba kernel: [<c018c120>] [<c024c14e>] [<c0108b10>] [<c013e6f8>] [<c013ed68>] [<c01c413a>]
May 5 01:40:46 rumba kernel: [<c01c397f>] [<c01b3f08>] [<c0142118>] [<c01412e2>] [<c01415e5>] [<c01070d8>]
May 5 01:40:46 rumba kernel:
May 5 01:40:46 rumba kernel: Code: 8b 9c ab 00 00 00 c0 53 68 6d d4 25 c0 e8 76 42 00 00 83 c4
ksymoops 2.4.5 on i686 2.4.19. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.19/ (default)
-m /boot/System.map-2.4.19 (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_system_map stat /boot/System.map-2.4.19 failed
ksymoops: No such file or directory
Unable to handle kernel paging request at virtual address 80cece43
c013e6f8
*pde = c3c9f045
Unable to handle kernel paging request at virtual address 83c9f3b0
c0117ee8
*pde = 00047883
Oops: 0000
CPU: 1
EIP: 0010:[<c0117ee8>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010212
eax: 00000013 ebx: c3c9f000 ecx: c029d628 edx: 00003af8
esi: 00000000 edi: f7bcfec0 ebp: 000000ec esp: f7bcfdfc
ds: 0018 es: 0018 ss: 0018
Process kupdated (pid: 7, stackpage=f7bcf000)
Stack: f7bce000 00000000 c0117ba0 00001e73 c02474e5 f2b14040 00000080 00000080
c0248c98 f7bce000 ea8c2b40 ea8c2b40 f2b14884 f2b14000 f7bcff3c 00000080
00030001 000001f6 f2b278e0 00000000 f2b14000 00000000 00000000 c01f2c4e
Call Trace: [<c0117ba0>] [<c02474e5>] [<c0248c98>] [<c01f2c4e>] [<c01f7074>]
[<c018c120>] [<c024c14e>] [<c0108b10>] [<c013e6f8>] [<c013ed68>] [<c01c413a>]
[<c01c397f>] [<c01b3f08>] [<c0142118>] [<c01412e2>] [<c01415e5>] [<c01070d8>]
Code: 8b 9c ab 00 00 00 c0 53 68 6d d4 25 c0 e8 76 42 00 00 83 c4
>>EIP; c0117ee8 <__verify_write+4f8/980> <=====
>>ebx; c3c9f000 <___strtok+393a180/386a01e0>
>>ecx; c029d628 <abi_defhandler_libcso+1b0/288>
>>edx; 00003af8 Before first symbol
>>edi; f7bcfec0 <___strtok+3786b040/386a01e0>
>>esp; f7bcfdfc <___strtok+3786af7c/386a01e0>
Trace; c0117ba0 <__verify_write+1b0/980>
Trace; c02474e5 <rpc_restart_call+d45/28c0>
Trace; c0248c98 <rpc_restart_call+24f8/28c0>
Trace; c01f2c4e <task_read_24+87e/21d0>
Trace; c01f7074 <export_probe_for_drive+d34/23e0>
Trace; c018c120 <zlib_fs_inflateSyncPoint+12790/21e90>
Trace; c024c14e <put_rpccred+12e/930>
Trace; c0108b10 <__read_lock_failed+12a0/27b0>
Trace; c013e6f8 <get_hash_table+78/a0>
Trace; c013ed68 <getblk+18/f0>
Trace; c01c413a <load_nls_default+213aa/29220>
Trace; c01c397f <load_nls_default+20bef/29220>
Trace; c01b3f08 <load_nls_default+11178/29220>
Trace; c0142118 <drop_super+128/160>
Trace; c01412e2 <try_to_free_buffers+2f2/360>
Trace; c01415e5 <block_sync_page+295/2c0>
Trace; c01070d8 <kernel_thread+28/1f0>
Code; c0117ee8 <__verify_write+4f8/980>
00000000 <_EIP>:
Code; c0117ee8 <__verify_write+4f8/980> <=====
0: 8b 9c ab 00 00 00 c0 mov 0xc0000000(%ebx,%ebp,4),%ebx <=====
Code; c0117eef <__verify_write+4ff/980>
7: 53 push %ebx
Code; c0117ef0 <__verify_write+500/980>
8: 68 6d d4 25 c0 push $0xc025d46d
Code; c0117ef5 <__verify_write+505/980>
d: e8 76 42 00 00 call 4288 <_EIP+0x4288>
Code; c0117efa <__verify_write+50a/980>
12: 83 c4 00 add $0x0,%esp
1 warning and 1 error issued. Results may not be reliable.
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