Re: Bug in running kvm

[Anthony Liguori <anthony-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>]

avadh patel wrote:
> Hello,
>
> Yesterday I compiled and installed kvm-55 release and I am not able to 
> get it working.
> When I try to run the qemu with following command:
>
>   $ qemu-system-x86_64 -hda vdisk.img -cdrom ubuntu_7.10_32.iso -boot 
> d -m 512

This is a known bug in the version of gfxboot that Ubuntu uses.  
Unfortunately, the fix didn't make the cut for Gutsy.  It will be 
available starting with Hardy Tribe 2.

You can work around this bug by using gfxboot-disable[1] on the ISO.

http://hg.codemonkey.ws/gfxboot-disable

Regards,

Anthony Liguori

> I got  some exception as shown below:
>
> exception 13 (33)
> rax 0000000000000469 rbx 0000000000800001 rcx 0000000000004300 rdx 
> 0000000000000000
> rsi 000000000005961d rdi 000000000005961c rsp 00000000fffaa9cc rbp 
> 000000000000200c
> r8  0000000000000000 r9  0000000000000000 r10 0000000000000000 r11 
> 0000000000000000
> r12 0000000000000000 r13 0000000000000000 r14 0000000000000000 r15 
> 0000000000000000
> rip 000000000000b04b rflags 00033006
> cs 4143 (00041430/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
> ds 4004 (00040040/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
> es 4004 (00040040/0000ffff 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 3002 (00030020/0000ffff 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 (20c00000/00002088 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 40920/47
> idt 0/ffff
> cr0 60000010 cr2 0 cr3 0 cr4 0 cr8 0 efer 0
> code: 0f 17 3e 28 08 02 28 3e 01 17 0f 17 46 28 08 02 28 0e 01 17 --> 
> 0f 17 3e 28 08 02 28 5d 01 17 0f 28 08 02 28 5e 01 17 0f 17 3b 28 08 
> 02 28 5f 01 17 0f 28
> Aborted (core dumped)
>
> And a core file is generated.
>
> When i tried to see in the core file, the backtrace of function call 
> is as below:
>
> #0  0x00002b46cd3fb765 in raise () from /lib/libc.so.6
> #1  0x00002b46cd3fd1c0 in abort () from /lib/libc.so.6
> #2  0x00000000004f2cd3 in kvm_run (kvm=0x2a47040, vcpu=0) at libkvm.c:938
> #3  0x000000000048db96 in kvm_cpu_exec (env=0x53ce) at 
> /home/avadh/workspace/kvm-55/qemu/qemu-kvm.c:547
> #4  0x000000000048e1ae in kvm_main_loop_cpu (env=0x2ae8680) at 
> /home/avadh/workspace/kvm-55/qemu/qemu- kvm.c:748
> #5  0x000000000040dd27 in main_loop () at 
> /home/avadh/workspace/kvm-55/qemu/vl.c:7229
> #6  0x000000000040fd03 in main (argc=1, argv=0x2) at 
> /home/avadh/workspace/kvm-55/qemu/vl.c:8966
>
> In this, the interesting point is at #3, where the 'env' pointer's 
> value is different than its value in #4.
>
> If I run the above command with '-no-kvm' option, it runs perfectly. 
> So it seems that there is some bug in kvm.
>
> My machine specs are:
> OS : Ubuntu 7.10 - 64 bit
> Processor: Intel Core 2 Duo
> Memory : 2G
> Host Kernel : 2.6.22.14 <http://2.6.22.14>
>
> Thanks,
> Avadh
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> SF.Net email is sponsored by:
> Check out the new SourceForge.net Marketplace.
> It's the best place to buy or sell services for
> just about anything Open Source.
> http://sourceforge.net/services/buy/index.php
> ------------------------------------------------------------------------
>
> _______________________________________________
> kvm-devel mailing list
> kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> https://lists.sourceforge.net/lists/listinfo/kvm-devel
>   


-------------------------------------------------------------------------
SF.Net email is sponsored by:
Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services
for just about anything Open Source.
http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace