Guys,
can someone confirm the following. I can reliably get my
kernel to panic if i kill irattach. I use SIR mode on my
laptop. Looks like lack of NULL checking in the kernel
code, but someone please try it out. Don't worry the
panic is not fatal - i.e. it won't crash your machine or
at least it doesn't mine..
So just a
kill <PID of irattach>
will kernel core. Look in your 'dmesg' output.
Thanx
Mitch
Here is my traceback
Unable to handle kernel NULL pointer dereference at virtual address 00000008
c011578c
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c011578c>]
EFLAGS: 00210246
eax: c2124a64 ebx: c1414000 ecx: c35c01e0 edx: 00000000
esi: 00000006 edi: 00000000 ebp: c3fcb3a0 esp: c1415fb8
ds: 0018 es: 0018 ss: 0018
Process irattach (pid: 5497, stackpage=c1415000)
Stack: 00000100 c357bdc0 c357bdf0 c3498000 c35c01e0 c3fcb3a0 c3f9ca40 c3f9ca40
c3f9ca40 c3f9ca40 c0115a80 c025c620 c357be80 c357be6c c0108914 c357bdf0
00000078 c357be80
Call Trace: [<c0115a80>] [<c0108914>]
Code: 8b 4f 08 39 ca 7d 22 8b 47 14 83 3c 90 00 74 14 89 f0 89 d3
Warning: trailing garbage ignored on Code: line
Text: 'Code: 8b 4f 08 39 ca 7d 22 8b 47 14 83 3c 90 00 74 14 89 f0 89 d3 '
Garbage: ' '
>>EIP: c011578c <exec_usermodehelper+29c/368>
Trace: c0115a80 <exec_helper+14/18>
Trace: c0108914 <kernel_thread+28/38>
Code: c011578c <exec_usermodehelper+29c/368> 00000000 <_EIP>: <===
Code: c011578c <exec_usermodehelper+29c/368> 0: 8b 4f 08 mov
0x8(%edi),%ecx <===
Code: c011578f <exec_usermodehelper+29f/368> 3: 39 ca cmp
%ecx,%edx
Code: c0115791 <exec_usermodehelper+2a1/368> 5: 7d 22 jge
c01157b5 <exec_usermodehelper+2c5/368>
Code: c0115793 <exec_usermodehelper+2a3/368> 7: 8b 47 14 mov
0x14(%edi),%eax
Code: c0115796 <exec_usermodehelper+2a6/368> a: 83 3c 90 00 cmpl
$0x0,(%eax,%edx,4)
Code: c011579a <exec_usermodehelper+2aa/368> e: 74 14 je
c01157b0 <exec_usermodehelper+2c0/368>
Code: c011579c <exec_usermodehelper+2ac/368> 10: 89 f0 mov
%esi,%eax
Code: c011579e <exec_usermodehelper+2ae/368> 12: 89 d3 mov
%edx,%ebx
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