2 Vassili: full bugreport can be seen online at
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=572943
We (Debian) just updated qemu-kvm from 0.11 to 0.12.3.
Can you comment please?  Thank you.

Christian Ohm wrote:
> Package: qemu-kvm
> Version: 0.12.3+dfsg-2
> Severity: important
> 
> Hello,
> 
> The current qemu-kvm segfaults when trying to access a sound device. I've 
> tried
> es1370 and aw97, Windows XP and Debian Etch, doesn't seem to make a 
> difference.
> With 0.11.1+dfsg-1 from testing sound works ok.

I just tried both locally built version and the one from -unstable, with
Windows7, WindowsXP and Debian Lenny images, with both es1370 and ac97.
It all works as expected as far as I can see, at least I don't see any
crashes.  Even tried it on a Lenny system, smp and non-smp... nothing.

> PS: Two gdb backtraces, one full:

Thank you for this.  However this leads to other questions.... see below.

> GNU gdb (GDB) 7.0.1-debian
> Copyright (C) 2009 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-linux-gnu".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> Reading symbols from /usr/bin/kvm...Reading symbols from 
> /usr/lib/debug/usr/bin/kvm...done.

Aha, so it correctly finds the debugging files from qemu-kvm-dbg
package, which appears to be installed.  Excellent...

> (no debugging symbols found)...done.

but it can't find debugging symbols, which is.. wrong!..
I wonder what's going on here...

Aha, I see now.  It's gdb which appears to be broken in
current squeeze - in lenny it works fine.  Oh well, it
really is not nice when a debugging tool is buggy... :(

> (gdb) r
> Starting program: /usr/bin/kvm -m 1024 -smp 2 -localtime -soundhw es1370 -vga 
> std -usb -net vde,vlan=0,sock=/var/run/vde2/tap0.ctl -net 
> nic,model=e1000,vlan=0 -hda debian-etch -snapshot
> [Thread debugging using libthread_db enabled]
> [New Thread 0x7fffeefa3910 (LWP 21114)]
> [New Thread 0x7fffee002910 (LWP 21115)]
> [New Thread 0x7fffabdfc910 (LWP 21116)]
> [New Thread 0x7fffaa04f910 (LWP 21119)]
> audio: Failed to create voice `es1370.adc'
> audio: Failed to create voice `es1370.adc'

I remember I've seen similar messages in the past, probably when
a sound device were busy or something like this.  But now I can't
trigger them, and I think this is the difference preventing me
from reproducing the bug.

Can you see what's holding your sound card and try running the
same thing without that holder?  If that's the case anyway...

[]
> *** glibc detected *** /usr/bin/kvm: free(): invalid next size (normal): 
> 0x000000000137a410 ***

And here, it's probably not very useful: something's corrupting
memory or pointers, which is very difficult to debug.  Should
run whole thing under valgrind perhaps, instead of trying to
get stack traces...

[big snip]

> GNU gdb (GDB) 7.0.1-debian
> Copyright (C) 2009 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-linux-gnu".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> Reading symbols from /usr/bin/kvm...Reading symbols from 
> /usr/lib/debug/usr/bin/kvm...done.
> (no debugging symbols found)...done.
> (gdb) r
> Starting program: /usr/bin/kvm -m 1024 -localtime -soundhw es1370 -vga std 
> -usb -usbdevice tablet -net vde,vlan=0,sock=/var/run/vde2/tap0.ctl -net 
> nic,model=virtio,vlan=0 -hda XP
> [Thread debugging using libthread_db enabled]
> [New Thread 0x7fffef1a4910 (LWP 20920)]
> [New Thread 0x7fffaca21910 (LWP 20921)]
> [New Thread 0x7fffac1a0910 (LWP 20922)]
> audio: Failed to create voice `es1370.adc'
> audio: Failed to create voice `es1370.adc'

And again the same thing...

> [Thread 0x7fffaca21910 (LWP 20921) exited]
> [New Thread 0x7fffaca21910 (LWP 20945)]
> A bug was just triggered in audio_run_out
> Save all your work and restart without audio
> Please send bug report to av1...@comtv.ru
> I am sorry

But now, that's probably a good advice... Copying av1474... :)

> Context:
> audio: played=880 sw->total_hw_samples_mixed=440
> A bug was just triggered in audio_run_out
> Context:
> audio: played=420 sw->total_hw_samples_mixed=220
> *** glibc detected *** /usr/bin/kvm: free(): invalid pointer: 
> 0x0000000000e75fe0 ***
> ======= Backtrace: =========
> /lib/libc.so.6[0x7ffff4fa0d16]
> /lib/libc.so.6(cfree+0x6c)[0x7ffff4fa59bc]
> /usr/lib/libX11.so.6[0x7ffff5554f32]
> /usr/lib/libX11.so.6(_XReply+0x140)[0x7ffff5555580]
> /usr/lib/libX11.so.6(XSync+0x63)[0x7ffff55490d3]
> /usr/lib/libSDL-1.2.so.0[0x7ffff587ca6c]
> /usr/lib/libSDL-1.2.so.0(SDL_LockSurface+0x5b)[0x7ffff586f00b]
> /usr/lib/libSDL-1.2.so.0[0x7ffff58593e8]
> /usr/lib/libSDL-1.2.so.0(SDL_LowerBlit+0x5c)[0x7ffff586f7ac]
> /usr/lib/libSDL-1.2.so.0(SDL_UpperBlit+0x131)[0x7ffff586f981]
> /usr/bin/kvm[0x4cb03a]
> /usr/bin/kvm[0x448581]
> /usr/bin/kvm[0x4cb0bb]
> /usr/bin/kvm[0x40d20e]
> /usr/bin/kvm[0x40ccdc]
> /usr/bin/kvm[0x425dda]
> /usr/bin/kvm[0x40f636]
> /lib/libc.so.6(__libc_start_main+0xfd)[0x7ffff4f4eabd]
> /usr/bin/kvm[0x409b39]
> ======= Memory map: ========
> 00400000-00636000 r-xp 00000000 08:01 139120                             
> /usr/bin/kvm
> 00835000-00857000 rw-p 00235000 08:01 139120                             
> /usr/bin/kvm
> 00857000-0129f000 rw-p 00000000 00:00 0                                  
> [heap]
> 7fffa4000000-7fffa4021000 rw-p 00000000 00:00 0 
> 7fffa4021000-7fffa8000000 ---p 00000000 00:00 0 
> 7fffab037000-7fffab04c000 r-xp 00000000 08:02 1687809                    
> /lib/libgcc_s.so.1
> 7fffab04c000-7fffab24c000 ---p 00015000 08:02 1687809                    
> /lib/libgcc_s.so.1
> 7fffab24c000-7fffab24d000 rw-p 00015000 08:02 1687809                    
> /lib/libgcc_s.so.1
> 7fffab24d000-7fffab9a0000 rw-s 00000000 00:04 1715830798                 
> /SYSV00000000 (deleted)
> 7fffab9a0000-7fffab9a1000 ---p 00000000 00:00 0 
> 7fffab9a1000-7fffac1a1000 rw-p 00000000 00:00 0 
> 7fffac1a1000-7fffac1e1000 rw-s 00000000 00:04 1709277195                 
> /SYSV0056a4d6 (deleted)
> 7fffac1e1000-7fffac221000 rw-s 00000000 00:0e 4006                       
> /dev/snd/pcmC0D0p
> 7fffac221000-7fffac222000 ---p 00000000 00:00 0 
> 7fffac222000-7fffaca22000 rw-p 00000000 00:00 0 
> 7fffaca22000-7fffaca27000 r-xp 00000000 08:01 754477                     
> /usr/lib/libXfixes.so.3.1.0
> 7fffaca27000-7fffacc26000 ---p 00005000 08:01 754477                     
> /usr/lib/libXfixes.so.3.1.0
> 7fffacc26000-7fffacc27000 rw-p 00004000 08:01 754477                     
> /usr/lib/libXfixes.so.3.1.0
> 7fffacc27000-7fffacc30000 r-xp 00000000 08:01 753066                     
> /usr/lib/libXcursor.so.1.0.2
> 7fffacc30000-7ffface30000 ---p 00009000 08:01 753066                     
> /usr/lib/libXcursor.so.1.0.2
> 7ffface30000-7ffface31000 rw-p 00009000 08:01 753066                     
> /usr/lib/libXcursor.so.1.0.2
> 7ffface31000-7fffad3dd000 r--p 00000000 08:01 756771                     
> /usr/lib/locale/locale-archive
> 7fffad3dd000-7fffad3e5000 r-xp 00000000 08:01 755658                     
> /usr/lib/libXrandr.so.2.2.0
> 7fffad3e5000-7fffad5e4000 ---p 00008000 08:01 755658                     
> /usr/lib/libXrandr.so.2.2.0
> 7fffad5e4000-7fffad5e5000 rw-p 00007000 08:01 755658                     
> /usr/lib/libXrandr.so.2.2.0
> 7fffad5e5000-7fffad5ee000 r-xp 00000000 08:01 752308                     
> /usr/lib/libXrender.so.1.3.0
> 7fffad5ee000-7fffad7ed000 ---p 00009000 08:01 752308                     
> /usr/lib/libXrender.so.1.3.0
> 7fffad7ed000-7fffad7ee000 rw-p 00008000 08:01 752308                     
> /usr/lib/libXrender.so.1.3.0
> 7fffad810000-7fffad831000 rw-p 00000000 00:00 0 
> 7fffad95e000-7fffad9a0000 rw-p 00000000 00:00 0 
> 7fffad9a0000-7fffee9a4000 rw-p 00000000 00:00 0 
> 7fffee9a4000-7fffee9a5000 ---p 00000000 00:00 0 
> 7fffee9a5000-7fffef1a5000 rw-p 00000000 00:00 0 
> 7fffef1a5000-7fffef1b0000 r-xp 00000000 08:02 1687827                    
> /lib/libnss_files-2.10.2.so
> 7fffef1b0000-7fffef3af000 ---p 0000b000 08:02 1687827                    
> /lib/libnss_files-2.10.2.so
> 7fffef3af000-7fffef3b0000 r--p 0000a000 08:02 1687827                    
> /lib/libnss_files-2.10.2.so
> 7fffef3b0000-7fffef3b1000 rw-p 0000b000 08:02 1687827                    
> /lib/libnss_files-2.10.2.so
> 7fffef3b1000-7fffef3bb000 r-xp 00000000 08:02 1687830                    
> /lib/libnss_nis-2.10.2.so
> 7fffef3bb000-7fffef5ba000 ---p 0000a000 08:02 1687830                    
> /lib/libnss_nis-2.10.2.so
> 7fffef5ba000-7fffef5bb000 r--p 00009000 08:02 1687830                    
> /lib/libnss_nis-2.10.2.so
> 7fffef5bb000-7fffef5bc000 rw-p 0000a000 08:02 1687830                    
> /lib/libnss_nis-2.10.2.so
> 7fffef5bc000-7fffef5c3000 r-xp 00000000 08:02 1687836                    
> /lib/libnss_compat-2.10.2.so
> 7fffef5c3000-7fffef7c2000 ---p 00007000 08:02 1687836                    
> /lib/libnss_compat-2.10.2.so
> 7fffef7c2000-7fffef7c3000 r--p 00006000 08:02 1687836                    
> /lib/libnss_compat-2.10.2.so
> 7fffef7c3000-7fffef7c4000 rw-p 00007000 08:02 1687836                    
> /lib/libnss_compat-2.10.2.so
> 7fffef7c4000-7fffef7c9000 r-xp 00000000 08:01 754322                     
> /usr/lib/libXdmcp.so.6.0.0
> 7fffef7c9000-7fffef9c8000 ---p 00005000 08:01 754322                     
> /usr/lib/libXdmcp.so.6.0.0
> 7fffef9c8000-7fffef9c9000 rw-p 00004000 08:01 754322                     
> /usr/lib/libXdmcp.so.6.0.0
> 7fffef9c9000-7fffef9cb000 r-xp 00000000 08:01 752717                     
> /usr/lib/libXau.so.6.0.0
> 7fffef9cb000-7fffefbcb000 ---p 00002000 08:01 752717                     
> /usr/lib/libXau.so.6.0.0
> 7fffefbcb000-7fffefbcc000 rw-p 00002000 08:01 752717                     
> /usr/lib/libXau.so.6.0.0
> 7fffefbcc000-7fffefbeb000 r-xp 00000000 08:02 1688902                    
> /lib/libx86.so.1
> 7fffefbeb000-7fffefdeb000 ---p 0001f000 08:02 1688902                    
> /lib/libx86.so.1
> 7fffefdeb000-7fffefded000 rw-p 0001f000 08:02 1688902                    
> /lib/libx86.so.1
> 7fffefded000-7fffefdee000 rw-p 00000000 00:00 0 
> 7fffefdee000-7fffefdf2000 r-xp 00000000 08:02 1687599                    
> /lib/libattr.so.1.1.0
> 7fffefdf2000-7fffefff1000 ---p 00004000 08:02 1687599                    
> /lib/libattr.so.1.1.0
> 7fffefff1000-7fffefff2000 rw-p 00003000 08:02 1687599                    
> /lib/libattr.so.1.1.0
> 7fffefff2000-7fffefff8000 r-xp 00000000 08:01 754786                     
> /usr/lib/libogg.so.0.6.0
> 7fffefff8000-7ffff01f7000 ---p 00006000 08:01 754786                     
> /usr/lib/libogg.so.0.6.0
> 7ffff01f7000-7ffff01f8000 rw-p 00005000 08:01 754786                     
> /usr/lib/libogg.so.0.6.0
> 7ffff01f8000-7ffff0224000 r-xp 00000000 08:01 754823                     
> /usr/lib/libvorbis.so.0.4.3
> 7ffff0224000-7ffff0423000 ---p 0002c000 08:01 754823                     
> /usr/lib/libvorbis.so.0.4.3
> 7ffff0423000-7ffff0424000 rw-p 0002b000 08:01 754823                     
> /usr/lib/libvorbis.so.0.4.3
> 7ffff0424000-7ffff05e6000 r-xp 00000000 08:01 752482                     
> /usr/lib/libvorbisenc.so.2.0.6
> 7ffff05e6000-7ffff07e5000 ---p 001c2000 08:01 752482                     
> /usr/lib/libvorbisenc.so.2.0.6
> 7ffff07e5000-7ffff07fc000 rw-p 001c1000 08:01 752482                     
> /usr/lib/libvorbisenc.so.2.0.6
> 7ffff07fc000-7ffff0845000 r-xp 00000000 08:01 752511                     
> /usr/lib/libFLAC.so.8.2.0
> 7ffff0845000-7ffff0a45000 ---p 00049000 08:01 752511                     
> /usr/lib/libFLAC.so.8.2.0
> 7ffff0a45000-7ffff0a47000 rw-p 00049000 08:01 752511                     
> /usr/lib/libFLAC.so.8.2.0
> Program received signal SIGABRT, Aborted.
> 0x00007ffff4f61f45 in *__GI_raise (sig=<value optimized out>) at 
> ../nptl/sysdeps/unix/sysv/linux/raise.c:64
> 64      ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
>         in ../nptl/sysdeps/unix/sysv/linux/raise.c
> (gdb) bt full
> #0  0x00007ffff4f61f45 in *__GI_raise (sig=<value optimized out>) at 
> ../nptl/sysdeps/unix/sysv/linux/raise.c:64
>         pid = <value optimized out>
>         selftid = <value optimized out>
> #1  0x00007ffff4f64d80 in *__GI_abort () at abort.c:88
>         act = {__sigaction_handler = {sa_handler = 0x1600000013, sa_sigaction 
> = 0x1600000013}, sa_mask = {__val = {140737488342656, 140737488342512, 
> 140737488342704, 
>               140737488348661, 12, 140737304108712, 3, 140737488342714, 6, 
> 140737304108716, 2, 140737488342702, 2, 140737304099820, 1, 
> 140737304108712}}, sa_flags = 3, 
>           sa_restorer = 0x7fffffffceb4}
>         sigs = {__val = {32, 0 <repeats 15 times>}}
> #2  0x00007ffff4f9754d in __libc_message (do_abort=2, 
>     fmt=0x7fffffffd0e0 ' ' <repeats 17 times>, 
> "/usr/lib/libFLAC.so.8.2.0\n7ffff0a45000-7ffff0a47000 rw-p 00049000 08:01 
> 752511", ' ' <repeats 21 times>, 
> "/usr/lib/libFLAC.so.8.2.0\n7ffff0a47000-7ffff0a5c000 r-xp 00000000 08:02 
> 1687888     "...) at ../sysdeps/unix/sysv/linux/libc_fatal.c:173
>         ap = {{gp_offset = 40, fp_offset = 48, overflow_arg_area = 
> 0x7fffffffd810, reg_save_area = 0x7fffffffd720}}
>         ap_copy = {{gp_offset = 16, fp_offset = 48, overflow_arg_area = 
> 0x7fffffffd810, reg_save_area = 0x7fffffffd720}}
>         fd = 22
>         on_2 = <value optimized out>
>         list = <value optimized out>
>         nlist = <value optimized out>
>         cp = <value optimized out>
>         written = 6
> #3  0x00007ffff4fa0d16 in malloc_printerr (action=3, str=0x7ffff5048992 
> "free(): invalid pointer", ptr=<value optimized out>) at malloc.c:6239
>         buf = "0000000000e75fe0"
>         cp = 0x0
> #4  0x00007ffff4fa59bc in *__GI___libc_free (mem=<value optimized out>) at 
> malloc.c:3738
>         ar_ptr = 0x7ffff527fe60
>         p = 0x6
> #5  0x00007ffff5554f32 in ?? () from /usr/lib/libX11.so.6
> No symbol table info available.
> #6  0x00007ffff5555580 in _XReply () from /usr/lib/libX11.so.6
> No symbol table info available.
> #7  0x00007ffff55490d3 in XSync () from /usr/lib/libX11.so.6
> No symbol table info available.
> #8  0x00007ffff587ca6c in ?? () from /usr/lib/libSDL-1.2.so.0
> No symbol table info available.
> #9  0x00007ffff586f00b in SDL_LockSurface () from /usr/lib/libSDL-1.2.so.0
> No symbol table info available.
> #10 0x00007ffff58593e8 in ?? () from /usr/lib/libSDL-1.2.so.0
> No symbol table info available.
> #11 0x00007ffff586f7ac in SDL_LowerBlit () from /usr/lib/libSDL-1.2.so.0
> No symbol table info available.
> #12 0x00007ffff586f981 in SDL_UpperBlit () from /usr/lib/libSDL-1.2.so.0
> No symbol table info available.
> #13 0x00000000004cb03a in sdl_update (ds=<value optimized out>, x=<value 
> optimized out>, y=<value optimized out>, w=<value optimized out>, h=<value 
> optimized out>)
>     at sdl.c:72
>         rec = {x = 0, y = 359, w = 1600, h = 15}
> #14 0x0000000000448581 in dpy_update (opaque=<value optimized out>) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/console.h:192
>         dcl = 0xe48ab0
> #15 vga_draw_graphic (opaque=<value optimized out>) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/hw/vga.c:1849
>         page_min = <value optimized out>
>         linesize = <value optimized out>
>         y_start = 359
>         shift_control = <value optimized out>
>         disp_width = 1600
>         addr1 = <value optimized out>
>         depth = <value optimized out>
>         page_max = <value optimized out>
>         multi_run = <value optimized out>
>         update = <value optimized out>
>         width = 1600
>         height = 1200
>         d = 0x7fffadbe9600 "y\306", <incomplete sequence \317>
>         vga_draw_line = 0x447420 <vga_draw_line32_32>
>         y1 = 374
>         mask = <value optimized out>
>         bits = <value optimized out>
> #16 vga_update_display (opaque=<value optimized out>) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/hw/vga.c:1938
> ---Type <return> to continue, or q <return> to quit---
>         s = 0x1193a48
>         full_update = <value optimized out>
>         graphic_mode = <value optimized out>
> #17 0x00000000004cb0bb in sdl_refresh (ds=0xc95f70) at sdl.c:552
>         ev1 = {type = 8 '\b', active = {type = 8 '\b', gain = 143 '\217', 
> state = 198 '\306'}, key = {type = 8 '\b', which = 143 '\217', state = 198 
> '\306', keysym = {
>               scancode = 0 '\000', sym = 1, mod = KMOD_NONE, unicode = 
> 56432}}, motion = {type = 8 '\b', which = 143 '\217', state = 198 '\306', x = 
> 0, y = 0, xrel = 1, 
>             yrel = 0}, button = {type = 8 '\b', which = 143 '\217', button = 
> 198 '\306', state = 0 '\000', x = 0, y = 0}, jaxis = {type = 8 '\b', which = 
> 143 '\217', 
>             axis = 198 '\306', value = 0}, jball = {type = 8 '\b', which = 
> 143 '\217', ball = 198 '\306', xrel = 0, yrel = 0}, jhat = {type = 8 '\b', 
>             which = 143 '\217', hat = 198 '\306', value = 0 '\000'}, jbutton 
> = {type = 8 '\b', which = 143 '\217', button = 198 '\306', state = 0 '\000'}, 
> resize = {
>             type = 8 '\b', w = 0, h = 1}, expose = {type = 8 '\b'}, quit = 
> {type = 8 '\b'}, user = {type = 8 '\b', code = 0, data1 = 0x1, data2 = 
> 0x7fffffffdc70}, 
>           syswm = {type = 8 '\b', msg = 0x1}}
>         mod_state = <value optimized out>
>         buttonstate = <value optimized out>
> #18 0x000000000040d20e in dpy_refresh (opaque=<value optimized out>) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/console.h:219
> No locals.
> #19 gui_update (opaque=<value optimized out>) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/vl.c:3230
>         interval = 30
>         ds = 0xc95f70
>         dcl = 0xe48ab0
> #20 0x000000000040ccdc in qemu_run_timers (timeout=1000) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/vl.c:1127
>         ts = 0x6
> #21 main_loop_wait (timeout=1000) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/vl.c:4036
>         ioh = 0xc68f08
>         rfds = {fds_bits = {0 <repeats 16 times>}}
>         wfds = {fds_bits = {0 <repeats 16 times>}}
>         xfds = {fds_bits = {0 <repeats 16 times>}}
>         ret = 1
>         nfds = 18
>         tv = {tv_sec = 0, tv_usec = 999455}
> #22 0x0000000000425dda in kvm_main_loop () at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/qemu-kvm.c:2122
>         fds = {16, 17}
>         mask = {__val = {268443712, 0 <repeats 15 times>}}
>         sigfd = <value optimized out>
> #23 0x000000000040f636 in main_loop (argc=<value optimized out>, 
> argv=0x7fffffffe2a8, envp=<value optimized out>)
>     at /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/vl.c:4210
>         r = <value optimized out>
> #24 main (argc=<value optimized out>, argv=0x7fffffffe2a8, envp=<value 
> optimized out>) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/vl.c:6248
>         gdbstub_dev = 0x0
>         boot_devices_bitmap = 0
>         i = <value optimized out>
>         snapshot = 0
>         initrd_filename = 0x0
>         kernel_filename = 0x0
>         kernel_cmdline = 0x5bb36f ""
>         boot_devices = "cad", '\000' <repeats 29 times>
>         dcl = <value optimized out>
>         cyls = 0
>         heads = 0
>         secs = 0
>         translation = 0
>         hda_opts = 0xc66fd0
>         opts = 0x57cc70
>         optind = <value optimized out>
>         r = <value optimized out>
>         optarg = <value optimized out>
>         loadvm = 0x0
>         machine = 0x846f80
>         cpu_model = 0x0
>         fds = {-244783920, 32767}
>         tb_size = 0
>         pid_file = 0x0
>         incoming = 0x0
>         fd = 0
>         pwd = 0x0
>         chroot_dir = 0x0
> ---Type <return> to continue, or q <return> to quit---
>         run_as = 0x0
>         env = <value optimized out>
> (gdb) bt
> #0  0x00007ffff4f61f45 in *__GI_raise (sig=<value optimized out>) at 
> ../nptl/sysdeps/unix/sysv/linux/raise.c:64
> #1  0x00007ffff4f64d80 in *__GI_abort () at abort.c:88
> #2  0x00007ffff4f9754d in __libc_message (do_abort=2, 
>     fmt=0x7fffffffd0e0 ' ' <repeats 17 times>, 
> "/usr/lib/libFLAC.so.8.2.0\n7ffff0a45000-7ffff0a47000 rw-p 00049000 08:01 
> 752511", ' ' <repeats 21 times>, 
> "/usr/lib/libFLAC.so.8.2.0\n7ffff0a47000-7ffff0a5c000 r-xp 00000000 08:02 
> 1687888     "...) at ../sysdeps/unix/sysv/linux/libc_fatal.c:173
> #3  0x00007ffff4fa0d16 in malloc_printerr (action=3, str=0x7ffff5048992 
> "free(): invalid pointer", ptr=<value optimized out>) at malloc.c:6239
> #4  0x00007ffff4fa59bc in *__GI___libc_free (mem=<value optimized out>) at 
> malloc.c:3738
> #5  0x00007ffff5554f32 in ?? () from /usr/lib/libX11.so.6
> #6  0x00007ffff5555580 in _XReply () from /usr/lib/libX11.so.6
> #7  0x00007ffff55490d3 in XSync () from /usr/lib/libX11.so.6
> #8  0x00007ffff587ca6c in ?? () from /usr/lib/libSDL-1.2.so.0
> #9  0x00007ffff586f00b in SDL_LockSurface () from /usr/lib/libSDL-1.2.so.0
> #10 0x00007ffff58593e8 in ?? () from /usr/lib/libSDL-1.2.so.0
> #11 0x00007ffff586f7ac in SDL_LowerBlit () from /usr/lib/libSDL-1.2.so.0
> #12 0x00007ffff586f981 in SDL_UpperBlit () from /usr/lib/libSDL-1.2.so.0
> #13 0x00000000004cb03a in sdl_update (ds=<value optimized out>, x=<value 
> optimized out>, y=<value optimized out>, w=<value optimized out>, h=<value 
> optimized out>)
>     at sdl.c:72
> #14 0x0000000000448581 in dpy_update (opaque=<value optimized out>) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/console.h:192
> #15 vga_draw_graphic (opaque=<value optimized out>) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/hw/vga.c:1849
> #16 vga_update_display (opaque=<value optimized out>) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/hw/vga.c:1938
> #17 0x00000000004cb0bb in sdl_refresh (ds=0xc95f70) at sdl.c:552
> #18 0x000000000040d20e in dpy_refresh (opaque=<value optimized out>) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/console.h:219
> #19 gui_update (opaque=<value optimized out>) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/vl.c:3230
> #20 0x000000000040ccdc in qemu_run_timers (timeout=1000) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/vl.c:1127
> #21 main_loop_wait (timeout=1000) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/vl.c:4036
> #22 0x0000000000425dda in kvm_main_loop () at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/qemu-kvm.c:2122
> #23 0x000000000040f636 in main_loop (argc=<value optimized out>, 
> argv=0x7fffffffe2a8, envp=<value optimized out>)
>     at /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/vl.c:4210
> #24 main (argc=<value optimized out>, argv=0x7fffffffe2a8, envp=<value 
> optimized out>) at 
> /home/jluebbe/git/debian/build-area/qemu-kvm-0.12.3+dfsg/vl.c:6248
> (gdb) 
> 
> 
> 
> 
> 
> 
> -- Package-specific info:
> 
> 
> selected information from lshal(1):
> 
> 
> 
> /proc/cpuinfo:
> 
> processor     : 0
> vendor_id     : AuthenticAMD
> cpu family    : 15
> model         : 107
> model name    : AMD Athlon(tm) 64 X2 Dual Core Processor 5000+
> stepping      : 2
> cpu MHz               : 1000.000
> cache size    : 512 KB
> physical id   : 0
> siblings      : 2
> core id               : 0
> cpu cores     : 2
> apicid                : 0
> initial apicid        : 0
> fpu           : yes
> fpu_exception : yes
> cpuid level   : 1
> wp            : yes
> 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 rep_good extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic 
> cr8_legacy 3dnowprefetch
> bogomips      : 2000.42
> TLB size      : 1024 4K pages
> clflush size  : 64
> cache_alignment       : 64
> address sizes : 40 bits physical, 48 bits virtual
> power management: ts fid vid ttp tm stc 100mhzsteps
> 
> processor     : 1
> vendor_id     : AuthenticAMD
> cpu family    : 15
> model         : 107
> model name    : AMD Athlon(tm) 64 X2 Dual Core Processor 5000+
> stepping      : 2
> cpu MHz               : 1000.000
> cache size    : 512 KB
> physical id   : 0
> siblings      : 2
> core id               : 1
> cpu cores     : 2
> apicid                : 1
> initial apicid        : 1
> fpu           : yes
> fpu_exception : yes
> cpuid level   : 1
> wp            : yes
> 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 rep_good extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic 
> cr8_legacy 3dnowprefetch
> bogomips      : 2000.42
> TLB size      : 1024 4K pages
> clflush size  : 64
> cache_alignment       : 64
> address sizes : 40 bits physical, 48 bits virtual
> power management: ts fid vid ttp tm stc 100mhzsteps
> 
> 
> 
> 
> -- System Information:
> Debian Release: squeeze/sid
>   APT prefers unstable
>   APT policy: (990, 'unstable'), (500, 'testing'), (1, 'experimental')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 2.6.32-2-amd64 (SMP w/2 CPU cores)
> Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> 
> Versions of packages qemu-kvm depends on:
> ii  adduser                 3.112            add and remove users and groups
> ii  bridge-utils            1.4-5            Utilities for configuring the 
> Linu
> ii  iproute                 20100224-1       networking and traffic control 
> too
> ii  libasound2              1.0.22-2         shared library for ALSA 
> applicatio
> ii  libbluetooth3           4.60-1           Library to use the BlueZ Linux 
> Blu
> ii  libbrlapi0.5            4.1-4            braille display access via 
> BRLTTY 
> ii  libc6                   2.10.2-6         Embedded GNU C Library: Shared 
> lib
> ii  libcurl3-gnutls         7.19.7-1         Multi-protocol file transfer 
> libra
> ii  libgnutls26             2.8.5-2          the GNU TLS library - runtime 
> libr
> ii  libncurses5             5.7+20090803-2   shared libraries for terminal 
> hand
> ii  libpci3                 1:3.1.7-1        Linux PCI Utilities (shared 
> librar
> ii  libpulse0               0.9.21-1         PulseAudio client libraries
> ii  libsasl2-2              2.1.23.dfsg1-5   Cyrus SASL - authentication 
> abstra
> ii  libsdl1.2debian         1.2.14-4         Simple DirectMedia Layer
> ii  libuuid1                2.16.2-0         Universally Unique ID library
> ii  libvdeplug2             2.2.3-3          Virtual Distributed Ethernet - 
> Plu
> ii  libx11-6                2:1.3.3-1        X11 client-side library
> ii  python                  2.5.4-9          An interactive high-level 
> object-o
> ii  zlib1g                  1:1.2.3.4.dfsg-3 compression library - runtime
> 
> Versions of packages qemu-kvm recommends:
> ii  linux-image-2.6.32-2-amd64 [l 2.6.32-8   Linux 2.6.32 for 64-bit PCs
> 
> Versions of packages qemu-kvm suggests:
> pn  debootstrap               <none>         (no description available)
> ii  hal                       0.5.14-2       Hardware Abstraction Layer
> ii  samba                     2:3.4.6~dfsg-1 SMB/CIFS file, print, and login 
> se
> ii  vde2                      2.2.3-3        Virtual Distributed Ethernet
> 
> -- no debconf information
> 




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