kvm crashes on load on Intel CPUs (exception 12)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
gfxboot (Ubuntu) |
Won't Fix
|
Low
|
Unassigned | ||
kvm (Ubuntu) |
Fix Released
|
High
|
Ubuntu Server |
Bug Description
Binary package hint: kvm
I've kvm (16-1ubuntu2) installed. When I try to install the ubuntu server (feisty) CD image, the following error message is printed:
exception 12 (0)
rax 000000000000051f rbx 0000000000040080 rcx 0000000000002000 rdx 0000000000016400
rsi 00000000ffff0800 rdi 0000000000040000 rsp 0000000000087bdc rbp 0000000000000000
r8 0000000000000000 r9 0000000000000000 r10 0000000000000000 r11 0000000000000000
r12 0000000000000000 r13 0000000000000000 r14 0000000000000000 r15 0000000000000000
rip 000000000000a4bc rflags 00033206
cs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
ds 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
es 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
ss 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
fs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
gs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
tr 0000 (20850000/00002088 p 1 dpl 0 db 0 s 0 type b l 0 g 0 avl 0)
ldt 0000 (00000000/0000ffff p 1 dpl 0 db 0 s 0 type 2 l 0 g 0 avl 0)
gdt fa4d1/37
idt 0/3ff
cr0 60000010 cr2 0 cr3 0 cr4 0 cr8 0 efer 0
Aborted (core dumped)
With kvm 18-1ubuntu1 I didn't get this error message, but kvm didn't work with this version.
To sum up: version 18 can't use the kernels kvm module, and version 16 crashes.
Changed in kvm: | |
status: | Unconfirmed → Confirmed |
Changed in linux-source-2.6.22: | |
status: | New → Confirmed |
Changed in linux-source-2.6.22: | |
assignee: | nobody → ubuntu-kernel-team |
I can reproduce this every time with kvm_16-1ubuntu2 on an HP Compaq dc7700p desktop system with Intel VT enabled in the BIOS (v2.09) running Feisty x86_64 (kernel 2.6.20-15). This happens with out without -no-acpi or -no-rtc.
My system log has hundreds of lines like the following:
[ 3271.013496] rtc: lost some interrupts at 1024Hz.
with the occasional:
[ 3229.167184] kvm: msrs: 6
A gdb backtrace is attached (but it's probably useless, since kvm is compiled without debugging symbols).