Here is a problem I've been having ever since moving from kernel 2.0.to
2.2 - I've seen it in every 2.2 kernel including -ac versions. I've seen
it on HP Vectras, and IBM 300 series boxes. The recipe for oops is
repeatable, every time. I can trigger the oops by simply following the
procedure below: (kernel 2.0 does not do this)
* Run kernel 2.2 on linux x86 with ibm "tropic" ISA token ring card.
Note - I always build the tr driver as a module
* run KDM (the xdm replacement from KDE)
* watch the fun begin the instant KDM starts
Here is a copy of the oops output:
Options used: -V (default)
-o /lib/modules/2.2.3/ (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.
Mar 9 18:13:00 foo kernel: CPU: 0
Mar 9 18:13:00 foo kernel: EIP: 0010:[<c018e118>]
Mar 9 18:13:00 foo kernel: EFLAGS: 00000216
Mar 9 18:13:00 foo kernel: eax: 00000000 ebx: 00000000 ecx:
0000005d edx:
bffff94c
Mar 9 18:13:00 foo kernel: esi: c00cde8c edi: bffff7d8 ebp:
c21acdf4 esp:
c2f15f6c
Mar 9 18:13:00 foo kernel: ds: 0018 es: 0018 ss: 0018
Mar 9 18:13:00 foo kernel: Process kdm (pid: 409, process nr: 5,
stackpage=c2f1
5000)
Mar 9 18:13:00 foo kernel: Stack: 00000000 c0182678 bfffd94c c00cc000
00002000
c21acde0 bfffd94c 00000000
Mar 9 18:13:00 foo kernel: 00002000 c01222fa c21acde0 bfffd94c
00002000
c21acdf4 c2f14000 0000039a
Mar 9 18:13:00 foo kernel: 00000000 bffff94c 000cc000 00000000
00002000
c0107a40 00000006 bfffd94c
Mar 9 18:13:00 foo kernel: Call Trace: [<c0182678>] [<c01222fa>]
[<c0107a40>]
Mar 9 18:13:00 foo kernel: Code: f3 a5 89 c1 f3 a4 89 c8 5b 5e 5f c3 57
56 53 8
b 7c 24 10 8b
>>EIP: c018e118 <__generic_copy_to_user+30/3c>
Trace: c0182678 <read_mem+44/70>
Trace: c01222fa <sys_read+be/dc>
Trace: c0107a40 <system_call+34/38>
Code: c018e118 <__generic_copy_to_user+30/3c> 00000000 <_EIP>:
Code: c018e118 <__generic_copy_to_user+30/3c> 0: f3 a5
repz mov
sl %ds:(%esi),%es:(%edi)
Code: c018e11a <__generic_copy_to_user+32/3c> 2: 89 c1
movl %
eax,%ecx
Code: c018e11c <__generic_copy_to_user+34/3c> 4: f3 a4
repz mov
sb %ds:(%esi),%es:(%edi)
Code: c018e11e <__generic_copy_to_user+36/3c> 6: 89 c8
movl %
ecx,%eax
Code: c018e120 <__generic_copy_to_user+38/3c> 8: 5b
popl %
ebx
Code: c018e121 <__generic_copy_to_user+39/3c> 9: 5e
popl %
esi
Code: c018e122 <__generic_copy_to_user+3a/3c> a: 5f
popl %
edi
Code: c018e123 <__generic_copy_to_user+3b/3c> b: c3
ret
Code: c018e124 <__generic_copy_from_user+0/3c> c: 57
pushl %
edi
Code: c018e125 <__generic_copy_from_user+1/3c> d: 56
pushl %
esi
Code: c018e126 <__generic_copy_from_user+2/3c> e: 53
pushl %
ebx
Code: c018e127 <__generic_copy_from_user+3/3c> f: 8b 7c 24 10
movl 0
x10(%esp,1),%edi
Code: c018e12b <__generic_copy_from_user+7/3c> 13: 8b 00
movl (
%eax),%eax
-
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