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SubjectPossible dcache BUG
Greetings,

I am getting the oops below - twice since 7/26, but I haven't a
clue what's causing it.
I am not a subscriber, so any replies directed to me would be
gratefully received.
Thank you for your hard work on this!

--

Brett Charbeneau, Network Administrator Tel: 757-259-7750
Williamsburg Regional Library FAX: 757-259-7798
7770 Croaker Road brett@wrl.org
Williamsburg, VA 23188-7064 http://www.wrl.org


ksymoops 2.4.9 on i686 2.4.26. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.26/ (default)
-m /boot/System.map (specified)

1151MB HIGHMEM available.
3c59x: Donald Becker and others. www.scyld.com/network/vortex.html
kernel BUG at dcache.c:345!
invalid operand: 0000
CPU: 0
EIP: 0010:[<c014322d>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010206
eax: 00040000 ebx: eb8d7c70 ecx: c281b394 edx: e5636700
esi: eb8d7c58 edi: c281b394 ebp: d2b15f34 esp: d2b15f08
ds: 0018 es: 0018 ss: 0018
Process umount (pid: 14814, stackpage=d2b15000)
Stack: c0128f81 c281b49c c281f000 00000246 d2b15f34 f721e1a0 00000466 f721e178
f721e178 f721e178 c02991c0 d2b15f44 c01435a6 00000150 f7b6f400 d2b15f5c
c013714f f721e178 d2b15f88 08052179 0804d82b d2b15f7c c013afea f7b6f400
Call Trace: [<c0128f81>] [<c01435a6>] [<c013714f>] [<c013afea>] [<c01472d0>]
[<c01472ee>] [<c0106d93>]
Code: 0f 0b 59 01 1e d6 25 c0 8d 56 10 8b 4a 04 8b 46 10 89 48 04


>>EIP; c014322d <prune_dcache+5d/140> <=====

>>ebx; eb8d7c70 <_end+2b5bb734/384f6ac4>
>>ecx; c281b394 <_end+24fee58/384f6ac4>
>>edx; e5636700 <_end+2531a1c4/384f6ac4>
>>esi; eb8d7c58 <_end+2b5bb71c/384f6ac4>
>>edi; c281b394 <_end+24fee58/384f6ac4>
>>ebp; d2b15f34 <_end+127f99f8/384f6ac4>
>>esp; d2b15f08 <_end+127f99cc/384f6ac4>

Trace; c0128f81 <kmem_cache_free+1c1/270>
Trace; c01435a6 <shrink_dcache_parent+16/30>
Trace; c013714f <kill_super+5f/f0>
Trace; c013afea <path_release+2a/40>
Trace; c01472d0 <sys_umount+80/90>
Trace; c01472ee <sys_oldumount+e/20>
Trace; c0106d93 <system_call+33/38>

Code; c014322d <prune_dcache+5d/140>
00000000 <_EIP>:
Code; c014322d <prune_dcache+5d/140> <=====
0: 0f 0b ud2a <=====
Code; c014322f <prune_dcache+5f/140>
2: 59 pop %ecx
Code; c0143230 <prune_dcache+60/140>
3: 01 1e add %ebx,(%esi)
Code; c0143232 <prune_dcache+62/140>
5: d6 (bad)
Code; c0143233 <prune_dcache+63/140>
6: 25 c0 8d 56 10 and $0x10568dc0,%eax
Code; c0143238 <prune_dcache+68/140>
b: 8b 4a 04 mov 0x4(%edx),%ecx
Code; c014323b <prune_dcache+6b/140>
e: 8b 46 10 mov 0x10(%esi),%eax
Code; c014323e <prune_dcache+6e/140>
11: 89 48 04 mov %ecx,0x4(%eax)

kernel BUG at dcache.c:345!
invalid operand: 0000
CPU: 0
EIP: 0010:[<c014322d>] Not tainted
EFLAGS: 00010206
eax: 00040000 ebx: ea612c70 ecx: c281b394 edx: dd1f64bc
esi: ea612c58 edi: c281b394 ebp: c2825f00 esp: c2825ed4
ds: 0018 es: 0018 ss: 0018
Process kswapd (pid: 4, stackpage=c2825000)
Stack: 00000187 00000003 c2825ef4 c0128525 c281b418 d8728000 c281b418 00000006
00000000 c233bfb0 00000003 c2825f0c c01435e2 00000d1d c2825f4c c012a284
00000006 000001d0 c2824000 ffffffff 00012199 000001d0 c02970d0 c2825f50
Call Trace: [<c0128525>] [<c01435e2>] [<c012a284>] [<c012a462>] [<c012a501>]
[<c012a580>] [<c012a739>] [<c012a7b6>] [<c012a8ff>] [<c012a860>] [<c0105000>]
[<c01055b6>] [<c012a860>]
Code: 0f 0b 59 01 1e d6 25 c0 8d 56 10 8b 4a 04 8b 46 10 89 48 04


>>EIP; c014322d <prune_dcache+5d/140> <=====

>>ebx; ea612c70 <_end+2a2f6734/384f6ac4>
>>ecx; c281b394 <_end+24fee58/384f6ac4>
>>edx; dd1f64bc <_end+1ced9f80/384f6ac4>
>>esi; ea612c58 <_end+2a2f671c/384f6ac4>
>>edi; c281b394 <_end+24fee58/384f6ac4>
>>ebp; c2825f00 <_end+25099c4/384f6ac4>
>>esp; c2825ed4 <_end+2509998/384f6ac4>

Trace; c0128525 <__kmem_cache_shrink_locked+45/70>
Trace; c01435e2 <shrink_dcache_memory+22/40>
Trace; c012a284 <shrink_cache+294/370>
Trace; c012a462 <refill_inactive+102/170>
Trace; c012a501 <shrink_caches+31/40>
Trace; c012a580 <try_to_free_pages_zone+70/f0>
Trace; c012a739 <kswapd_balance_pgdat+59/b0>
Trace; c012a7b6 <kswapd_balance+26/40>
Trace; c012a8ff <kswapd+9f/c0>
Trace; c012a860 <kswapd+0/c0>
Trace; c0105000 <_stext+0/0>
Trace; c01055b6 <arch_kernel_thread+26/40>
Trace; c012a860 <kswapd+0/c0>

Code; c014322d <prune_dcache+5d/140>
00000000 <_EIP>:
Code; c014322d <prune_dcache+5d/140> <=====
0: 0f 0b ud2a <=====
Code; c014322f <prune_dcache+5f/140>
2: 59 pop %ecx
Code; c0143230 <prune_dcache+60/140>
3: 01 1e add %ebx,(%esi)
Code; c0143232 <prune_dcache+62/140>
5: d6 (bad)
Code; c0143233 <prune_dcache+63/140>
6: 25 c0 8d 56 10 and $0x10568dc0,%eax
Code; c0143238 <prune_dcache+68/140>
b: 8b 4a 04 mov 0x4(%edx),%ecx
Code; c014323b <prune_dcache+6b/140>
e: 8b 46 10 mov 0x10(%esi),%eax
Code; c014323e <prune_dcache+6e/140>
11: 89 48 04 mov %ecx,0x4(%eax)



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