From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nikola Ciprich <nikola.ciprich@linuxbox.cz>
Subject: Re: qemu-kvm-1.2.0: double free or corruption in VNC code
Date: Wed, 21 Nov 2012 07:43:16 +0100
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Cc: kvm <kvm@vger.kernel.org>, nik@linuxbox.cz
To: Stefan Hajnoczi <stefanha@gmail.com>
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Hello Stefan,

thanks! here it goes..

> > *** glibc detected *** /usr/bin/qemu-kvm: double free or corruption (!p=
rev): 0x00007fc634008cd0 ***
> > =3D=3D=3D=3D=3D=3D=3D Backtrace: =3D=3D=3D=3D=3D=3D=3D=3D=3D
> > /lib64/libc.so.6(+0x75916)[0x7fc9026f4916]
> > /lib64/libc.so.6(+0x78443)[0x7fc9026f7443]
> > /usr/bin/qemu-kvm(+0x1faeb1)[0x7fc907187eb1]
> > /usr/bin/qemu-kvm(+0x1f0e1a)[0x7fc90717de1a]
> > /usr/bin/qemu-kvm(+0x1fb681)[0x7fc907188681]
> > /usr/bin/qemu-kvm(+0xed6a7)[0x7fc90707a6a7]
> > /usr/bin/qemu-kvm(+0x195c31)[0x7fc907122c31]
> > /usr/bin/qemu-kvm(main+0x106c)[0x7fc90711e5fc]
> > /lib64/libc.so.6(__libc_start_main+0xfd)[0x7fc90269dcdd]
> > /usr/bin/qemu-kvm(+0x749f9)[0x7fc9070019f9]
> [...]

[root@blg qemu-kvm-1.2.0]# addr2line -e /usr/lib/debug/usr/bin/qemu-kvm.deb=
ug 0x1faeb1 0x1f0e1a 0x1fb681 0xed6a7 0x195c31 0x106c
/usr/src/debug/qemu-kvm-1.2.0/ui/vnc.c:499
/usr/src/debug/qemu-kvm-1.2.0/ui/vnc-enc-zrle.c:364
/usr/src/debug/qemu-kvm-1.2.0/ui/vnc.c:1037
/usr/src/debug/qemu-kvm-1.2.0/iohandler.c:159
/usr/src/debug/qemu-kvm-1.2.0/main-loop.c:499
??:0

this makes some sense to me, since it crashed while there was VNC
connection active..

>=20
> It's important to fetch the debuginfo package for the exact same
> version of the qemu RPM you were running.
sure, it's the same version.

BR

nik

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