[Qemu-devel] qemu-system-x86_64 crashes

[Qemu-devel] qemu-system-x86_64 crashes

[Erik de Castro Lopo]

Hi all,

I'm new to qemu and I'm getting this same crash on both the qemu packages
in Ubuntu Hardy Heron (0.9.1) and the version in SVN.

I'm running on an 2 * dual core AMD-64 system [0] which is running
Ubuntu Hardy Heron. I am trying to load debian testing AMD64 in
qemu. When running from the SVN compiled sources I do:

    x86_64-softmmu/qemu-system-x86_64 -L pc-bios \
       -cdrom ~/Qemu/debian-testing-amd64-netinst.iso -m 512 \
       -boot d ~/Qemu/debian-64.img

I get the first boots splash screen and proceed to chose a language
and thats when qemu crashes with:

    RAX=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=0000000000000000
    RSI=0000000000000000 RDI=0000000000000000 RBP=0000000000000000 RSP=00007fff6d37c000
    R8 =0000000000000000 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000200
    R12=0000000000000000 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000
    RIP=00002ba53d72da60 RFL=00010202 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0
    ES =0000 0000000000000000 00000000 00000000
    CS =0033 0000000000000000 ffffffff 00affb00
    SS =002b 0000000000000000 ffffffff 00cff300
    DS =0000 0000000000000000 00000000 00000000
    FS =0000 0000000000000000 00000000 00000000
    GS =0000 0000000000000000 00000000 00000000
    LDT=0000 0000000000000000 00000000 00008000
    TR =0040 ffff810001008000 0000206f 00008900
    GDT=     ffffffff8051e000 00000080
    IDT=     ffffffff8057c000 00000fff
    CR0=8005003b CR2=00002ba53d72da60 CR3=000000001feb5000 CR4=000006e0
    Unsupported return value: 0xffffffff

If I add -kernel-kqemu to the command line it crashes with a slightly
sooner with a slightly different register dump and the following in
the messages log:

    [224430.290033] kqemu: aborting: Unexpected exception 0x0d in monitor space
    [224430.290038] err=0000 CS:EIP=f180:00000000f0001f6f SS:SP=0000:00000000f00c6e00

Anyone have any idea what went wrong here?

I'm a reasonably advanced developer so if someone can point me in the
right direction, I'mmore than willing to hack on this.

Cheers,
Erik

[0] Opteron 265 which does *not* have the hardware virtualization
    extensions.

-- 
-----------------------------------------------------------------
Erik de Castro Lopo
-----------------------------------------------------------------
"Every time microshaft's stock price drops again, I rejoice. I
want to see that bunch of criminals brought to their knees.
Preferably at the chopping block."
-- rixt in http://linuxtoday.com/stories/20659_flat.html

Re: [Qemu-devel] qemu-system-x86_64 crashes

[Aurelien Jarno]

Erik de Castro Lopo a écrit :
> Hi all,
> 
> I'm new to qemu and I'm getting this same crash on both the qemu packages
> in Ubuntu Hardy Heron (0.9.1) and the version in SVN.
> 
> I'm running on an 2 * dual core AMD-64 system [0] which is running
> Ubuntu Hardy Heron. I am trying to load debian testing AMD64 in
> qemu. When running from the SVN compiled sources I do:
> 
>     x86_64-softmmu/qemu-system-x86_64 -L pc-bios \
>        -cdrom ~/Qemu/debian-testing-amd64-netinst.iso -m 512 \
>        -boot d ~/Qemu/debian-64.img
> 
> I get the first boots splash screen and proceed to chose a language
> and thats when qemu crashes with:
> 
>     RAX=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=0000000000000000
>     RSI=0000000000000000 RDI=0000000000000000 RBP=0000000000000000 RSP=00007fff6d37c000
>     R8 =0000000000000000 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000200
>     R12=0000000000000000 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000
>     RIP=00002ba53d72da60 RFL=00010202 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0
>     ES =0000 0000000000000000 00000000 00000000
>     CS =0033 0000000000000000 ffffffff 00affb00
>     SS =002b 0000000000000000 ffffffff 00cff300
>     DS =0000 0000000000000000 00000000 00000000
>     FS =0000 0000000000000000 00000000 00000000
>     GS =0000 0000000000000000 00000000 00000000
>     LDT=0000 0000000000000000 00000000 00008000
>     TR =0040 ffff810001008000 0000206f 00008900
>     GDT=     ffffffff8051e000 00000080
>     IDT=     ffffffff8057c000 00000fff
>     CR0=8005003b CR2=00002ba53d72da60 CR3=000000001feb5000 CR4=000006e0
>     Unsupported return value: 0xffffffff
> 
> If I add -kernel-kqemu to the command line it crashes with a slightly
> sooner with a slightly different register dump and the following in
> the messages log:
> 
>     [224430.290033] kqemu: aborting: Unexpected exception 0x0d in monitor space
>     [224430.290038] err=0000 CS:EIP=f180:00000000f0001f6f SS:SP=0000:00000000f00c6e00
> 
> Anyone have any idea what went wrong here?
> 

kqemu doesn't work correctly for x86-64 guests. Try using -no-kqemu.


-- 
  .''`.  Aurelien Jarno	            | GPG: 1024D/F1BCDB73
 : :' :  Debian developer           | Electrical Engineer
 `. `'   aurel32@debian.org         | aurelien@aurel32.net
   `-    people.debian.org/~aurel32 | www.aurel32.net

Re: [Qemu-devel] qemu-system-x86_64 crashes

[Erik de Castro Lopo]

Aurelien Jarno wrote:

> kqemu doesn't work correctly for x86-64 guests. Try using -no-kqemu.

Thank you, Aurelien. It works with -no-kqemu.

Cheers,
Erik
-- 
-----------------------------------------------------------------
Erik de Castro Lopo
-----------------------------------------------------------------
"Every time you get a windows programmer asking you to write some
ass-backward workaround, think of it as a crack junkie asking you
to help stuff his pipe because his hands are too shaky."
-- Conrad Parker