----- "Avi Kivity" <avi@xxxxxxxxxx> wrote: > On 08/25/2010 04:00 PM, Jason Wang wrote: > > > > 0000000000400bb8<__setup_args>: > > 400bb8: 41 55 push %r13 > > 400bba: 41 54 push %r12 > > 400bbc: 55 push %rbp > > 400bbd: 53 push %rbx > > 400bbe: 48 8b 1d db e7 00 00 mov 0xe7db(%rip),%rbx > # 40f3a0<__args> > > 400bc5: 41 bc 80 ec 40 00 mov $0x40ec80,%r12d > > 400bcb: 41 bd 80 f0 40 00 mov $0x40f080,%r13d > > 400bd1: eb 42 jmp > 400c15<__setup_args+0x5d> > > 400bd3: 4d 89 65 00 mov %r12,0x0(%r13) > > 400bd7: 0f b6 28 movzbl (%rax),%ebp > > 400bda: 40 84 ed test %bpl,%bpl > > 400bdd: 75 16 jne > 400bf5<__setup_args+0x3d> > > 400bdf: eb 21 jmp > 400c02<__setup_args+0x4a> > > 400be1: 41 88 2c 24 mov %bpl,(%r12) > > 400be5: 49 83 c4 01 add $0x1,%r12 > > 400bed: 0f b6 2b movzbl (%rbx),%ebp > > 400bf0: 40 84 ed test %bpl,%bpl > > 400bf3: 74 0d je > 400c02<__setup_args+0x4a> > > 400bf5: 40 0f be fd movsbl %bpl,%edi > > 400bf9: e8 a6 ff ff ff callq 400ba4<isblank> > > 400bfe: 84 c0 test %al,%al > > 400c00: 74 df je > 400be1<__setup_args+0x29> > > 400c02: 49 83 c5 08 add $0x8,%r13 > > 400c06: 41 c6 04 24 00 movb $0x0,(%r12) > > 400c0b: 49 83 c4 01 add $0x1,%r12 > > 400c0f: eb 04 jmp > 400c15<__setup_args+0x5d> > > 400c11: 48 83 c3 01 add $0x1,%rbx > >>> 400c15: 0f b6 2b movzbl (%rbx),%ebp > > 400c18: 40 0f be fd movsbl %bpl,%edi > > 400c1c: e8 83 ff ff ff callq 400ba4<isblank> > > .... > > > > > Looks completely unrelated. We access the command line string and > fault. > > You can hack qemu-kvm to vmstop() on KVM_EXIT_SHUTDOWN and examine > %rbx. It's probably corrupted. Maybe we need to copy the multiboot > command line early to prevent the rest of the code from stomping on > it. > Thanks for your help, the problem disappers after rebasing qemu-kvm tree. And do you have any other comments on this patchset? > -- > I have a truly marvellous patch that fixes the bug which this > signature is too narrow to contain. > > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
