Re: qemu-kvm-1.1.0 crashing with kernel 3.5.0-rc6

[Gleb Natapov <gleb@redhat.com>]

On Wed, Jul 11, 2012 at 08:09:42AM +0100, Chris Clayton wrote:
> Ping.
> 
> Have I committed a bug-reporting sin in the mail below or is
> everyone simply too busy to look at this kvm-related crash?
> 
Since you have good and bad points can you bisect the problem?

> On 07/09/12 11:57, Chris Clayton wrote:
> >Hi,
> >
> >When I run WinXP SP3 through qemu-kvm-1.1.0 on linux kernel 3.5.0-rc6, I
> >get a segmentation fault within 3 or 4 minutes maximum. In dmesg I see:
> >
> >qemu-kvm: sending ioctl 5326 to a partition!
> >qemu-kvm: sending ioctl 801c0204 to a partition!
> >qemu-kvm: sending ioctl 5326 to a partition!
> >qemu-kvm: sending ioctl 801c0204 to a partition!
> >qemu-kvm: sending ioctl 5326 to a partition!
> >qemu-kvm: sending ioctl 801c0204 to a partition!
> >qemu-kvm: sending ioctl 5326 to a partition!
> >qemu-kvm: sending ioctl 801c0204 to a partition!
> >qemu-kvm[860] general protection ip:b6abad77 sp:b52ff09c error:0 in
> >libc-2.16.so[b697d000+1b4000]
> >
> >The crash does not occur with qemu-kvm-1.0.1 on rc6. Nor does it occur
> >qemu-kvm-1.0.1 or qemu-kvm-1.1.0 on kernel 3.4.4. All three combinations
> >survive for 15 minutes or more
> >
> >When I try to get a backtrace with gdb, the screen on which konsole and
> >qemu are running locks up until I kill qemu in another console.
> >Consequently I can't get a full BT, but, although probably not very
> >helpful, what I did get is:
> >
> >Program received signal SIGSEGV, Segmentation fault.
> >[Switching to Thread 0xb6946b40 (LWP 506)]
> >0xb7705d77 in __strcmp_sse4_2 () from /lib/libc.so.6
> >(gdb) bt
> >#0  0xb7705d77 in __strcmp_sse4_2 () from /lib/libc.so.6
> >#1  0xb7e8d6e3 in g_str_equal () from /usr/lib/libglib-2.0.so.0
> >#2  0xb7e8c94c in g_hash_table_lookup () from /usr/lib/libglib-2.0.so.0
> >Cannot access memory at address 0xb694610c
> >(gdb)
> >
> >Note that the gdb and dmesg outputs above are not from the same crash
> >instance.
> >
> >I'm not subscribed,so please cc me on any reply.
> >
> >Happy to provide any additional diagnostics (but may need help on how to
> >get them) or test patches, etc
> >
> >Thanks
> >
> >Chris Clayton
> 
> 
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--
			Gleb.