Re: KVM oops in svm_vcpu_run with 2.6.24-rc7

[Andi Kleen <ak-l3A5Bk7waGM@public.gmane.org>]

On Wednesday 23 January 2008 12:28:06 Avi Kivity wrote:
> Andi Kleen wrote:
> > While starting a kernel
> >
> > Unable to handle kernel NULL pointer dereference at 0000000000000008 RIP:
> >  [<ffffffff885698fd>] :kvm_amd:svm_vcpu_run+0x35/0x30d
>
> Can you disassemble svm_vcpu_run() so we see where this ist

Pretty much at the beginning. It's the first reference of the first argument


00000000000008c8 <svm_vcpu_run>:
     8c8:       65 8b 0c 25 24 00 00    mov    %gs:0x24,%ecx
     8cf:       00 
     8d0:       48 63 c1                movslq %ecx,%rax
     8d3:       48 89 fe                mov    %rdi,%rsi
     8d6:       48 c7 c2 00 00 00 00    mov    $0x0,%rdx
     8dd:       48 8b 04 c5 00 00 00    mov    0x0(,%rax,8),%rax
     8e4:       00 
     8e5:       48 8b 40 08             mov    0x8(%rax),%rax
     8e9:       48 8b 3c 02             mov    (%rdx,%rax,1),%rdi
     8ed:       48 8b 86 f0 0d 00 00    mov    0xdf0(%rsi),%rax
     8f4:       c6 40 5c 00             movb   $0x0,0x5c(%rax)
     8f8:       39 4e 40                cmp    %ecx,0x40(%rsi)
     8fb:       75 0d                   jne    90a <svm_vcpu_run+0x42>
     8fd:       48 8b 47 08             mov    0x8(%rdi),%rax                

Last instruction faulted

-Andi

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