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Old 06-12-2008, 02:41 PM
"Adam Hough"
 
Default qemu-kvm segfaulting when running kernel-PAE.i686

Does anyone know of a reason that would cause qemu-kvm to segfault when the system is running the an PAE kernel?* Qemu-kvm works fine if I am using the kernel.i686 package.

When it does crash under the PAE kernel it leaves this message in dmesg:


kvm: 3646: cpu0 unhandled rdmsr: 0xc0000080
kvm: inject_page_fault: double fault 0x804d6ffc
kvm: 3646: cpu0 task_switch_interception: task switch is unsupported

Selinux is currently set to permissive so I know it is not selinux's fault.


I am currently running the 2.6.25.4-30.fc9.i686.PAE kernel.

root@tinybox winxp_qemu # qemu-kvm winxp_qemu.img
unhandled vm exit: 0x3f60101 vcpu_id 0
rax 000000002446ff20 rbx 000000008054269c rcx 0000000000000000 rdx 0000000000008052

rsi 00000000805426c8 rdi 0000000000000000 rsp 00000000804d7000 rbp 000000008052d44d
r8* 0000000000000000 r9* 0000000000000000 r10 0000000000000000 r11 0000000000000000
r12 0000000000000000 r13 0000000000000000 r14 0000000000000000 r15 0000000000000000

rip 0000000080540470 rflags 00000086
cs 0008 (00000000/ffffffff p 1 dpl 0 db 1 s 1 type b l 0 g 0 avl 0)
ds 0023 (00000000/ffffffff p 1 dpl 3 db 1 s 1 type 3 l 0 g 1 avl 0)
es 0023 (00000000/ffffffff p 1 dpl 3 db 1 s 1 type 3 l 0 g 1 avl 0)

ss 0010 (00000000/ffffffff p 1 dpl 0 db 1 s 1 type 3 l 0 g 1 avl 0)
fs 0030 (ffdff000/00001fff p 1 dpl 0 db 1 s 1 type 3 l 0 g 1 avl 0)
gs 0000 (00000000/0000ffff p 1 dpl 0 db 0 s 1 type 3 l 0 g 0 avl 0)
tr 0028 (80042000/000020ab p 1 dpl 0 db 0 s 0 type 9 l 0 g 0 avl 0)

ldt 0000 (00000000/0000ffff p 0 dpl 0 db 0 s 0 type 0 l 0 g 0 avl 0)
gdt 8003f000/3ff
idt 8003f400/7ff
cr0 8001003d cr2 804d6ffc cr3 abc000 cr4 20 cr8 0 efer 0
Aborted


My cpu is a AMD Athlon(tm) X2 Dual Core Processor BE-2400

flags*** *** : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy 3dnowprefetch ts fid vid ttp tm stc 100mhzsteps

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Old 06-12-2008, 04:00 PM
"Richard W.M. Jones"
 
Default qemu-kvm segfaulting when running kernel-PAE.i686

On Thu, Jun 12, 2008 at 09:41:31AM -0500, Adam Hough wrote:
> Does anyone know of a reason that would cause qemu-kvm to segfault when the
> system is running the an PAE kernel? Qemu-kvm works fine if I am using the
> kernel.i686 package.

What version?

This looks similar to:
https://bugzilla.redhat.com/show_bug.cgi?id=310591

Rich.

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virt-p2v converts physical machines to virtual machines. Boot with a
live CD or over the network (PXE) and turn machines into Xen guests.
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