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Date: Fri, 5 Oct 2012 09:33:19 +0200
From: Stefan Hajnoczi <stefanha@gmail.com>
Message-ID: <20121005073319.GA1399@stefanha-thinkpad.redhat.com>
References: <20121003125732.14751.4991.malonedeb@gac.canonical.com>
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Subject: Re: [Qemu-devel] [Bug 1060928] [NEW] Error in launch virtual server
 port
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To: Bug 1060928 <1060928@bugs.launchpad.net>
Cc: qemu-devel@nongnu.org

On Wed, Oct 03, 2012 at 12:57:32PM -0000, javier navarro altimira wrote:
> -----------------------------------
> 
> .- script bash launcher
> 
> #!/bin/bash
> 
> qemu-system-i386 -m 128 -display sdl -cpu pentium \
> -k es \
> -net nic,vlan=0,macaddr=52:54:00:12:02:04,model=pcnet \
> -net vde,vlan=0,sock=/var/run/vde2/tap0.ctl \
> -serial unix:/tmp/com1,server,nowait \
> -vga cirrus \
> -boot c -hda "/home/VirtualMachines/Discos/Hispa70_1.vmdk" \
> -cdrom "/home/VirtualMachines/CDROM/hf-7.0a.iso" 2>statusRUN
> 
> echo -n "Pulsa enter para continuar . . . " && read REPLY
> 
> -----------------------------------
> 
> .- Error
> 
> *** buffer overflow detected ***: qemu-system-i386 terminated
> ======= Backtrace: =========
> /lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x37)[0x7f2759892007]
> /lib/x86_64-linux-gnu/libc.so.6(+0x107f00)[0x7f2759890f00]
> /lib/x86_64-linux-gnu/libc.so.6(+0x108fbe)[0x7f2759891fbe]
> qemu-system-i386(+0xe5153)[0x7f275bfd8153]
> qemu-system-i386(+0x1744f6)[0x7f275c0674f6]
> qemu-system-i386(main+0xe77)[0x7f275bf5ef37]
> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7f27597aa76d]
> qemu-system-i386(+0x70229)[0x7f275bf63229]

Thanks for the bug report.  The backtrace has no symbol information so it is
hard to tell where in QEMU goes wrong.

Please ./configure --enable-debug or install the debuginfo package that comes
with your qemu package.  This will add symbol information to the backtrace when
you reproduce the buffer overflow again.

Stefan