oops-code - extract useful info from Linux kernel oops messages Copyright (c) 2008, Bart Trojanowski [email protected]
This utility extracts useful information from kernel oops dumps.
Currently it's only job is to convert the Code: line, which is
a raw dump of the instructions around the crash, into assembly.
And it only works for i386.
The project is tracked in git, you can obtain it by cloning it:
git clone git://github.com/bartman/oops-code.git
Other than gcc and libc, there are no build dependencies. To run it you
will need objdump from the binutils package.
After obtaining the sources just run make in the project directory.
make
./oops-code < oops-file
# Code: 3b 74 24 10 77 03 c6 06 20 4d 46 85 ed 7f f1 e9 a0 00 00 00 8b 0f 81 f9 ff 0f 00 00 77 05 b9 37 60 29 c0 8b 54 24 18 89 c8 eb 06 <80> 38 00 74 07 40 4a 83 fa ff 75 f4 29 c8 f6 44 24 14 10 89 c3
/tmp/oops-code-9453: file format elf32-i386
Disassembly of section .oops:
c01a516b <before>:
c01a516b: 3b 74 24 10 cmp 0x10(%esp),%esi
c01a516f: 77 03 ja c01a5174 <before+0x9>
c01a5171: c6 06 20 movb $0x20,(%esi)
c01a5174: 4d dec %ebp
c01a5175: 46 inc %esi
c01a5176: 85 ed test %ebp,%ebp
c01a5178: 7f f1 jg c01a516b <before>
c01a517a: e9 a0 00 00 00 jmp c01a521f <oops+0x89>
c01a517f: 8b 0f mov (%edi),%ecx
c01a5181: 81 f9 ff 0f 00 00 cmp $0xfff,%ecx
c01a5187: 77 05 ja c01a518e <before+0x23>
c01a5189: b9 37 60 29 c0 mov $0xc0296037,%ecx
c01a518e: 8b 54 24 18 mov 0x18(%esp),%edx
c01a5192: 89 c8 mov %ecx,%eax
c01a5194: eb 06 jmp c01a519c <oops+0x6>
c01a5196 <oops>:
c01a5196: 80 38 00 cmpb $0x0,(%eax)
c01a5199: 74 07 je c01a51a2 <oops+0xc>
c01a519b: 40 inc %eax
c01a519c: 4a dec %edx
c01a519d: 83 fa ff cmp $0xffffffff,%edx
c01a51a0: 75 f4 jne c01a5196 <oops>
c01a51a2: 29 c8 sub %ecx,%eax
c01a51a4: f6 44 24 14 10 testb $0x10,0x14(%esp)
c01a51a9: 89 c3 mov %eax,%ebx
- Article on HOWTO find oops location, by Denis Vlasenko.
vim: set ts=8 et sw=8 tw=72 ft=mkd