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From: Vladimir Saveliev <vs@namesys.com>
Organization: namesys
To: linux-kernel@vger.kernel.org
Subject: [2.4.23] kernel BUG at page_alloc.c:235!
Date: Mon, 8 Dec 2003 19:39:07 +0300
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Hi

A program which reads spontaneously 4k blocks from a device (sda1) causes the following quite fast.


Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
SCSI device sda: 1600864640 512-byte hdwr sectors (819643 MB)
 sda: sda1
kernel BUG at page_alloc.c:235!
invalid operand: 0000
CPU:    0
EIP:    0010:[<c012cf70>]    Not tainted
EFLAGS: 00010202
eax: 0100004c   ebx: c11a2fc0   ecx: 00001000   edx: 0000985b
esi: c02ee698   edi: 00000001   ebp: c02ee698   esp: cd6b9e5c
ds: 0018   es: 0018   ss: 0018
Process reiserfsck (pid: 604, stackpage=cd6b9000)
Stack: 00001000 00000286 0000885b 00000296 00000000 c02ee698 c02ee698 c02ee84c
       00000001 00000001 c012d273 2fb59ff0 cd546a40 c8f38940 c8f388c0 0000000c
       c02ee698 c02ee848 00000000 000001d0 00000001 cd546af4 0029a366 0029a385
Call Trace:    [<c012d273>] [<c0124f78>] [<c01394e0>] [<c01255ef>] [<c012584c>]
  [<c0125e30>] [<c0125f84>] [<c0125e30>] [<d08fcdfa>] [<c01335d3>] [<c01072cf>]

Code: 0f 0b eb 00 bd 2f 2a c0 8b 43 18 a9 80 00 00 00 74 08 0f 0b


Ksymoops provides

vs@tribesman:/tmp/> ksymoops -m System.map file2 -V -O -K
ksymoops 2.4.9 on i686 2.4.21-144-default.  Options used
     -V (specified)
     -K (specified)
     -l /proc/modules (default)
     -O (specified)
     -m System.map (specified)

No ksyms, skipping lsmod
kernel BUG at page_alloc.c:235!
invalid operand: 0000
CPU:    0
EIP:    0010:[<c012cf70>]    Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010202
eax: 0100004c   ebx: c11a2fc0   ecx: 00001000   edx: 0000985b
esi: c02ee698   edi: 00000001   ebp: c02ee698   esp: cd6b9e5c
ds: 0018   es: 0018   ss: 0018
Process reiserfsck (pid: 604, stackpage=cd6b9000)
Stack: 00001000 00000286 0000885b 00000296 00000000 c02ee698 c02ee698 c02ee84c
       00000001 00000001 c012d273 2fb59ff0 cd546a40 c8f38940 c8f388c0 0000000c
       c02ee698 c02ee848 00000000 000001d0 00000001 cd546af4 0029a366 0029a385
Call Trace:    [<c012d273>] [<c0124f78>] [<c01394e0>] [<c01255ef>] [<c012584c>]
  [<c0125e30>] [<c0125f84>] [<c0125e30>] [<d08fcdfa>] [<c01335d3>] [<c01072cf>]
Code: 0f 0b eb 00 bd 2f 2a c0 8b 43 18 a9 80 00 00 00 74 08 0f 0b


>>EIP; c012cf70 <rmqueue+1f0/220>   <=====

>>esi; c02ee698 <contig_page_data+d8/3c0>
>>ebp; c02ee698 <contig_page_data+d8/3c0>

Trace; c012d273 <__alloc_pages+e3/260>
Trace; c0124f78 <page_cache_read+68/c0>
Trace; c01394e0 <blkdev_get_block+0/60>
Trace; c01255ef <generic_file_readahead+cf/170>
Trace; c012584c <do_generic_file_read+18c/450>
Trace; c0125e30 <file_read_actor+0/a0>
Trace; c0125f84 <generic_file_read+b4/1a0>
Trace; c0125e30 <file_read_actor+0/a0>
Trace; d08fcdfa <END_OF_CODE+10585f0e/????>
Trace; c01335d3 <sys_read+a3/130>
Trace; c01072cf <system_call+33/38>

Code;  c012cf70 <rmqueue+1f0/220>
00000000 <_EIP>:
Code;  c012cf70 <rmqueue+1f0/220>   <=====
   0:   0f 0b                     ud2a      <=====
Code;  c012cf72 <rmqueue+1f2/220>
   2:   eb 00                     jmp    4 <_EIP+0x4>
Code;  c012cf74 <rmqueue+1f4/220>
   4:   bd 2f 2a c0 8b            mov    $0x8bc02a2f,%ebp
Code;  c012cf79 <rmqueue+1f9/220>
   9:   43                        inc    %ebx
Code;  c012cf7a <rmqueue+1fa/220>
   a:   18 a9 80 00 00 00         sbb    %ch,0x80(%ecx)
Code;  c012cf80 <rmqueue+200/220>
  10:   74 08                     je     1a <_EIP+0x1a>
Code;  c012cf82 <rmqueue+202/220>
  12:   0f 0b                     ud2a


Thanks,
vs