Messages in this thread |  | | Date | Thu, 05 Oct 2000 15:00:27 +0300 | From | Petko Manolov <> |
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Hi there,
I ran into this oops with test9. It appears on irregular base i.e. it can be immediately after i run X or minutes later.
As far as i can see the problem is a wild pointer (the first argument of filp_close - filp) in filp_close(), which is called by sys_close().
Actually to filp is assigned value from files->fd pool.
Attached is the ksymoops output of the oops.
Petkanksymoops 2.3.4 on i686 2.4.0-test9. Options used -V (default) -k /proc/ksyms (default) -l /proc/modules (default) -o /lib/modules/2.4.0-test9/ (default) -m /boot/System.map-2.4.0-test9 (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.
Unable to handle kernel paging request at virtual address 00040135 c0129f16 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0010:[<c0129f16>] Using defaults from ksymoops -t elf32-i386 -a i386 EFLAGS: 00010297 eax: c7d9cc60 ebx: 00040121 ecx: 00000004 edx: c7d9cbc0 esi: bffff604 edi: 00000000 ebp: bffff60c esp: c76fbfa8 ds: 0018 es: 0018 ss: 0018 Process bash (pid: 1501, stackpage=c76fb000) Stack: 00040121 bffff604 c0129fb7 00040121 c7d9cbc0 c76fa000 c0108d37 00000004 00000000 000005de bffff604 00000000 bffff60c 00000006 0000002b 0000002b 00000006 400e846d 00000023 00000287 bffff5d0 0000002b Call Trace: [<c0129fb7>] [<c0108d37>] Code: 8b 43 14 85 c0 75 13 68 e2 09 1b c0 e8 c5 af fe ff 31 c0 83
>>EIP; c0129f16 <filp_close+6/64> <===== Trace; c0129fb7 <sys_close+43/54> Trace; c0108d37 <system_call+33/38> Code; c0129f16 <filp_close+6/64> 00000000 <_EIP>: Code; c0129f16 <filp_close+6/64> <===== 0: 8b 43 14 mov 0x14(%ebx),%eax <===== Code; c0129f19 <filp_close+9/64> 3: 85 c0 test %eax,%eax Code; c0129f1b <filp_close+b/64> 5: 75 13 jne 1a <_EIP+0x1a> c0129f30 <filp_close+20/64> Code; c0129f1d <filp_close+d/64> 7: 68 e2 09 1b c0 push $0xc01b09e2 Code; c0129f22 <filp_close+12/64> c: e8 c5 af fe ff call fffeafd6 <_EIP+0xfffeafd6> c0114eec <printk+0/15c> Code; c0129f27 <filp_close+17/64> 11: 31 c0 xor %eax,%eax Code; c0129f29 <filp_close+19/64> 13: 83 00 00 addl $0x0,(%eax)
1 warning issued. Results may not be reliable.
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