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SubjectRe: Bug on 2.6.26 - x86 VIA Nehemiah CentaurHauls processor cannot boot
On Mon, Jul 21, 2008 at 6:23 AM, H. Peter Anvin <hpa@zytor.com> wrote:
> Luis R. Rodriguez wrote:
>>
>> This bug seems to be present since 2.6.22 [1], so hope we can get this
>> fixed ASAP. Let me know if you have patch suggestions I can test.
>>
>> This crashes very early, I had to use earlyprintk to get it.
>>
>> BUG: Int 6: CR2 00000000
>> EDI 00000000 ESI 0009f000 EBP 00000000 ESP c036ff60
>> EBX c03e6070 EDX 00000006 ECX 0000009f EAX c034d240
>> err 00000000 EIP c0387ac2 CS 00000060 flg 00010016
>> Stack: 00000000 00000000 c03b63d8 c037bb11 0001dff0 00003c00 c0399614
>> c03b6304
>> 00822007 c037aeb4 c0304134 000001df c0304117 00000000 30303030
>> 205d3030
>> 00000000 c034c794 00000000 00000000 00822007 c02b921f c034c794
>> 00000000
>> [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.26 #1
>
> Use objdump -d or something to find out what is at 0xc0387ac2

I've put extra spaces between the culprit.

c0387aa0 <free_bootmem>:
c0387aa0: 57 push %edi
c0387aa1: 89 c7 mov %eax,%edi
c0387aa3: a1 40 d2 34 c0 mov 0xc034d240,%eax
c0387aa8: 56 push %esi
c0387aa9: 89 d6 mov %edx,%esi
c0387aab: 53 push %ebx
c0387aac: eb 0e jmp c0387abc <free_bootmem+0x1c>
c0387aae: 89 d8 mov %ebx,%eax
c0387ab0: 89 f1 mov %esi,%ecx
c0387ab2: 89 fa mov %edi,%edx
c0387ab4: e8 67 ff ff ff call c0387a20 <free_bootmem_core>
c0387ab9: 8b 43 18 mov 0x18(%ebx),%eax
c0387abc: 8d 58 e8 lea -0x18(%eax),%ebx
c0387abf: 8b 43 18 mov 0x18(%ebx),%eax

c0387ac2: 0f 1f 40 00 nopl 0x0(%eax)

c0387ac6: 81 fb 28 d2 34 c0 cmp $0xc034d228,%ebx
c0387acc: 75 e0 jne c0387aae <free_bootmem+0xe>
c0387ace: 5b pop %ebx
c0387acf: 5e pop %esi
c0387ad0: 5f pop %edi
c0387ad1: c3 ret

Luis


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