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SubjectVM-related Oops: 2.4.15pre1
This box has Oopsed twice but is still running.  Both Oopses followed a
BUG() report (same in both cases):

kernel BUG at page_alloc.c:76!

Which maps to:

if (page->mapping)
BUG();

...in __free_pages_ok() in mm/page_alloc.c.

This box has the same setup as I've reported for previous Oopses -- dual
PIII 800 CPUs, 512MB ECC SDRAM, etc.

Decoded oopses for backtraces:

ksymoops 0.7c on i686 2.4.15-pre1. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.15-pre1/ (default)
-m /boot/System.map (specified)

Warning (compare_maps): mismatch on symbol partition_name , ksyms_base says c0203460, System.map says c0152f70. Ignoring ksyms_base entry
Reading Oops report from the terminal
invalid operand: 0000
CPU: 1
EIP: 0010:[<c012bf34>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010282
eax: 0000001f ebx: c108b040 ecx: c02c9040 edx: 000044ae
esi: c108b040 edi: 00000000 ebp: 00000000 esp: c1829f1c
ds: 0018 es: 0018 ss: 0018
Process kswapd (pid: 5, stackpage=c1829000)
Stack: c0270d09 0000004c c108b040 c108b040 00000000 0000001d c0135b3a c108b05c
c108b040 00000000 c012b066 c012c855 c108b05c c012b757 00000020 000001d0
00000020 00000006 c1828000 00000100 00002263 000001d0 c02ca268 c012ba10
Call Trace: [<c0135b3a>] [<c012b066>] [<c012c855>] [<c012b757>] [<c012ba10>]
[<c012ba5d>] [<c012baf3>] [<c012bb4e>] [<c012bc5d>] [<c01055b4>]
Code: 0f 0b 83 c4 08 8d b4 26 00 00 00 00 89 f0 2b 05 6c 99 34 c0

>>EIP; c012bf34 <__free_pages_ok+34/2b8> <=====
Trace; c0135b3a <try_to_free_buffers+12e/18c>
Trace; c012b066 <lru_cache_del+12/1c>
Trace; c012c855 <page_cache_release+2d/30>
Trace; c012b757 <shrink_cache+26f/3a8>
Trace; c012ba10 <shrink_caches+5c/8c>
Trace; c012ba5d <try_to_free_pages+1d/3c>
Trace; c012baf3 <kswapd_balance_pgdat+43/8c>
Trace; c012bb4e <kswapd_balance+12/28>
Trace; c012bc5d <kswapd+99/bc>
Trace; c01055b4 <kernel_thread+28/38>
Code; c012bf34 <__free_pages_ok+34/2b8>
00000000 <_EIP>:
Code; c012bf34 <__free_pages_ok+34/2b8> <=====
0: 0f 0b ud2a <=====
Code; c012bf36 <__free_pages_ok+36/2b8>
2: 83 c4 08 add $0x8,%esp
Code; c012bf39 <__free_pages_ok+39/2b8>
5: 8d b4 26 00 00 00 00 lea 0x0(%esi,1),%esi
Code; c012bf40 <__free_pages_ok+40/2b8>
c: 89 f0 mov %esi,%eax
Code; c012bf42 <__free_pages_ok+42/2b8>
e: 2b 05 6c 99 34 c0 sub 0xc034996c,%eax


1 warning issued. Results may not be reliable.

Second Oops:

ksymoops 0.7c on i686 2.4.15-pre1. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.15-pre1/ (default)
-m /boot/System.map (specified)

Warning (compare_maps): mismatch on symbol partition_name , ksyms_base says c0203460, System.map says c0152f70. Ignoring ksyms_base entry
Reading Oops report from the terminal
invalid operand: 0000
CPU: 1
EIP: 0010:[<c012bf34>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010282
eax: 0000001f ebx: c108b040 ecx: c02c9040 edx: 000047e6
esi: c108b040 edi: dbc21330 ebp: 00000000 esp: d1487f00
ds: 0018 es: 0018 ss: 0018
Process getdomainpasswo (pid: 26743, stackpage=d1487000)
Stack: c0270d09 0000004c c108b040 00000073 dbc21330 00000000 c0125d0a 00000010
00010203 c108b040 c1885020 c012c855 c108b040 c0125acb d1487f8c c108b040
00000000 00000073 00000000 40016000 00000000 00001000 00000073 00000001
Call Trace: [<c0125d0a>] [<c012c855>] [<c0125acb>] [<c0125da5>] [<c0125cdc>]
[<c01321ab>] [<c0106dbb>]
Code: 0f 0b 83 c4 08 8d b4 26 00 00 00 00 89 f0 2b 05 6c 99 34 c0

>>EIP; c012bf34 <__free_pages_ok+34/2b8> <=====
Trace; c0125d0a <file_read_actor+2e/58>
Trace; c012c855 <page_cache_release+2d/30>
Trace; c0125acb <do_generic_file_read+23f/450>
Trace; c0125da5 <generic_file_read+71/8c>
Trace; c0125cdc <file_read_actor+0/58>
Trace; c01321ab <sys_read+8f/c4>
Trace; c0106dbb <system_call+33/38>
Code; c012bf34 <__free_pages_ok+34/2b8>
00000000 <_EIP>:
Code; c012bf34 <__free_pages_ok+34/2b8> <=====
0: 0f 0b ud2a <=====
Code; c012bf36 <__free_pages_ok+36/2b8>
2: 83 c4 08 add $0x8,%esp
Code; c012bf39 <__free_pages_ok+39/2b8>
5: 8d b4 26 00 00 00 00 lea 0x0(%esi,1),%esi
Code; c012bf40 <__free_pages_ok+40/2b8>
c: 89 f0 mov %esi,%eax
Code; c012bf42 <__free_pages_ok+42/2b8>
e: 2b 05 6c 99 34 c0 sub 0xc034996c,%eax


1 warning issued. Results may not be reliable.

Simon-

[ Stormix Technologies Inc. ][ NetNation Communications Inc. ]
[ sim@stormix.com ][ sim@netnation.com ]
[ Opinions expressed are not necessarily those of my employers. ]
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