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Date: Tue, 06 Sep 2011 10:39:27 +0200
From: Stefan Weil <weil@mail.berlios.de>
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Subject: Re: [Qemu-devel] qemu segfaults at start
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To: octane indice <octane@alinto.com>
Cc: qemu-devel@nongnu.org

Am 06.09.2011 10:11, schrieb octane indice:
> $ gdb --args qemu disk.img -vnc 127.0.0.1:1
> GNU gdb (GDB) 7.1
> Copyright (C) 2010 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 "i486-slackware-linux".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> Reading symbols from /usr/local/bin/qemu...(no debugging symbols
> found)...done.
> (gdb) r
> Starting program: /usr/local/bin/qemu disk.img -vnc 127.0.0.1:1
> [Thread debugging using libthread_db enabled]
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x081a94c1 in ?? ()
> (gdb) bt
> #0  0x081a94c1 in ?? ()
> #1  0xb58af3e7 in ?? ()
> Backtrace stopped: previous frame inner to this frame (corrupt stack?)
> (gdb) info reg
> eax            0xbfffef08       -1073746168
> ecx            0x1      1
> edx            0x0      0
> ebx            0x8      8
> esp            0xbfffee50       0xbfffee50
> ebp            0xbfffef08       0xbfffef08
> esi            0x0      0
> edi            0x0      0
> eip            0x81a94c1        0x81a94c1
> eflags         0x210246 [ PF ZF IF RF ID ]
> cs             0x73     115
> ss             0x7b     123
> ds             0x7b     123
> es             0x7b     123
> fs             0x0      0
> gs             0x33     51
> (gdb)
>
> And exact same bt if I launch with qemu -hda disk.img
>
> HTH, thanks
>    

/usr/local/bin/qemu is stripped because it was installed with make install,
so there is no useful debugging information.

Please look for the unstripped i386-softmmu/qemu executable in your build path
and run it using gdb.

Regards,
Stefan Weil