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Subject[2.2.13pre6] oops during updatedb.cron?

I found an oops in the log this morning.

Box info.
-------------------------------------------------------
x86 200MMX uniproc.
64MB ram but only using 32MB with mem=32M (flakey mem)
ide only
kernel 2.2.13pre6
modules loaded: ip_masq_irc, ip_masq_ftp, ip_masq_quake
gcc 2.7.2.3
2 x eexpress 16 (crappy cards, possible suspects?)
uptime around 6-7 days
redhat 5.2 with lots of updates

the timing of the oops(4:03 am) suggests it happened during the processing
of the /etc/cron.daily scripts: updatedb.cron, tmpwatch, logrotate


output from ksymoops

WARNING: This version of ksymoops is obsolete.
WARNING: The current version can be obtained from
ftp://ftp.ocs.com.au/pub/ksymoops
Options used: -V (default)
-o /lib/modules/2.2.13pre6/ (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-m /usr/src/linux/System.map (default)
-c 1 (default)

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.

No modules in ksyms, skipping objects
Oct 6 04:03:16 zeke kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000000
Oct 6 04:03:16 zeke kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000000
Oct 6 04:03:16 zeke kernel: current->tss.cr3 = 00101000, %cr3 = 00101000
Oct 6 04:03:16 zeke kernel: current->tss.cr3 = 00101000, %cr3 = 00101000
Oct 6 04:03:16 zeke kernel: *pde = 00000000
Oct 6 04:03:16 zeke kernel: *pde = 00000000
Oct 6 04:03:16 zeke kernel: Oops: 0002
Oct 6 04:03:16 zeke kernel: Oops: 0002
Oct 6 04:03:16 zeke kernel: CPU: 0
Oct 6 04:03:16 zeke kernel: CPU: 0
Oct 6 04:03:16 zeke kernel: EIP: 0010:[kmem_cache_free+337/368]
Oct 6 04:03:16 zeke kernel: EIP: 0010:[kmem_cache_free+337/368]
Oct 6 04:03:16 zeke kernel: EFLAGS: 00010282
Oct 6 04:03:16 zeke kernel: EFLAGS: 00010282
Oct 6 04:03:16 zeke kernel: eax: 0000003d ebx: c1fff740 ecx: c1fe2000
edx: 0000003c
Oct 6 04:03:16 zeke kernel: eax: 0000003d ebx: c1fff740 ecx: c1fe2000
edx: 0000003c
Oct 6 04:03:16 zeke kernel: esi: c0eb7b40 edi: 00000282 ebp: 312e7765
esp: c1fe3f6c
Oct 6 04:03:16 zeke kernel: esi: c0eb7b40 edi: 00000282 ebp: 312e7765
esp: c1fe3f6c
Oct 6 04:03:16 zeke kernel: ds: 0018 es: 0018 ss: 0018
Oct 6 04:03:16 zeke kernel: ds: 0018 es: 0018 ss: 0018
Oct 6 04:03:16 zeke kernel: Process kswapd (pid: 5, process nr: 5,
stackpage=c1fe3000)
Oct 6 04:03:16 zeke kernel: Process kswapd (pid: 5, process nr: 5,
stackpage=c1fe3000)
Oct 6 04:03:16 zeke kernel: Stack: c0eb7ba0 c0200bd8 c1fe8000 c0eb7b9c
c010f0ff c0124959 c1fff740 c0eb7b40
Oct 6 04:03:16 zeke kernel: Stack: c0eb7ba0 c0200bd8 c1fe8000 c0eb7b9c
c010f0ff c0124959 c1fff740 c0eb7b40
Oct 6 04:03:16 zeke kernel: c0eb7b40 c0eb7ba0 c01252a3 c0eb7b40
c0eb7b40 c0200bd8 0000007f 00000030
Oct 6 04:03:16 zeke kernel: c0eb7b40 c0eb7ba0 c01252a3 c0eb7b40
c0eb7b40 c0200bd8 0000007f 00000030
Oct 6 04:03:16 zeke kernel: c1fe2000 c011a732 c0200bd8 00000003
00000006 c011f4a7 00000006 00000030
Oct 6 04:03:16 zeke kernel: c1fe2000 c011a732 c0200bd8 00000003
00000006 c011f4a7 00000006 00000030
Oct 6 04:03:16 zeke kernel: Call Trace: [__wake_up+59/72]
[put_unused_buffer_head+33/76] [try_to_free_buffers+79/136]
[shrink_mmap+218/300] [do_try_to_free_pages+35/120] [tvecs+5230/9837]
[kswapd+87/200]
Oct 6 04:03:16 zeke kernel: Call Trace: [__wake_up+59/72]
[put_unused_buffer_head+33/76] [try_to_free_buffers+79/136]
[shrink_mmap+218/300] [do_try_to_free_pages+35/120] [tvecs+5230/9837]
[kswapd+87/200]
Oct 6 04:03:16 zeke kernel: Code: c7 05 00 00 00 00 00 00 00 00 5b 5e 5f
5d 83 c4 0c c3 90 53

Code: 00000000 Before first symbol 00000000 <_IP>: <===
Code: 00000000 Before first symbol 0: c7 05 00 00 00
movl $0x0,0x0 <===
Code: 00000005 Before first symbol 5: 00 00 00 00 00
Code: 0000000a Before first symbol a: 5b
popl %ebx
Code: 0000000b Before first symbol b: 5e
popl %esi
Code: 0000000c Before first symbol c: 5f
popl %edi
Code: 0000000d Before first symbol d: 5d
popl %ebp
Code: 0000000e Before first symbol e: 83 c4 0c
addl $0xc,%esp
Code: 00000011 Before first symbol 11: c3
ret
Code: 00000012 Before first symbol 12: 90
nop
Code: 00000013 Before first symbol 13: 53
pushl %ebx

Oct 6 04:03:16 zeke kernel: Code: c7 05 00 00 00 00 00 00 00 00 5b 5e 5f
5d 83 c4 0c c3 90 53

Code: 00000000 Before first symbol 00000000 <_IP>: <===
Code: 00000000 Before first symbol 0: c7 05 00 00 00
movl $0x0,0x0 <===
Code: 00000005 Before first symbol 5: 00 00 00 00 00
Code: 0000000a Before first symbol a: 5b
popl %ebx
Code: 0000000b Before first symbol b: 5e
popl %esi
Code: 0000000c Before first symbol c: 5f
popl %edi
Code: 0000000d Before first symbol d: 5d
popl %ebp
Code: 0000000e Before first symbol e: 83 c4 0c
addl $0xc,%esp
Code: 00000011 Before first symbol 11: c3
ret
Code: 00000012 Before first symbol 12: 90
nop
Code: 00000013 Before first symbol 13: 53
pushl %ebx

I see the warning about ksymoops being obsolete, I will upgrade if someone
in the know deems it necessary.

I hope this helps.

shane


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