From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikola Ciprich Subject: Re: qemu-kvm-1.2.0: double free or corruption in VNC code Date: Sat, 1 Dec 2012 20:16:14 +0100 Message-ID: <20121201191614.GA4669@nik-comp.linuxbox.cz> References: <20121119075601.GB8634@pcnci.linuxbox.cz> <20121121064316.GE13162@pcnci.linuxbox.cz> <20121123072202.GF22787@stefanha-thinkpad.hitronhub.home> <20121123192432.GA4277@nik-comp.linuxbox.cz> <20121126105625.GB963@stefanha-thinkpad.redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="sm4nu43k4a2Rpi4c" Cc: kvm , nik@linuxbox.cz To: Stefan Hajnoczi Return-path: Received: from gwu.lbox.cz ([62.245.111.132]:41454 "EHLO gwu.lbox.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751825Ab2LATQI (ORCPT ); Sat, 1 Dec 2012 14:16:08 -0500 Content-Disposition: inline In-Reply-To: <20121126105625.GB963@stefanha-thinkpad.redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: --sm4nu43k4a2Rpi4c Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hello Stefan, thanks for Your time looking at it. >=20 > Thanks, I looked at the backtrace in the source tree. Unfortunately the > root cause is not obvious to me. I was looking for a double-free of the > zrle buffers. >=20 > If this bug repeatedly bites you, try a different VNC encoding as a > workaround (not ZRLE). Well, when I reported the problem, it was first time it appeared, so I didn= 't consider it big deal, but yesterday we got it again, on different server (but the backtrace is completely the same) But it was the same person as before (and quite a new user to our KVM guests), so I suspect it can be something specific to his client or setup. I'll try to look at it deeper and let You know if I figure something out... cheers nik >=20 > Perhaps someone more familiar with the VNC code will be able to see it. > All the information you have provided is helpful. >=20 > Stefan > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >=20 --=20 ------------------------------------- Ing. Nikola CIPRICH LinuxBox.cz, s.r.o. 28. rijna 168, 709 00 Ostrava tel.: +420 591 166 214 fax: +420 596 621 273 mobil: +420 777 093 799 www.linuxbox.cz mobil servis: +420 737 238 656 email servis: servis@linuxbox.cz ------------------------------------- --sm4nu43k4a2Rpi4c Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (GNU/Linux) iEYEARECAAYFAlC6V34ACgkQ3xdJJrLygV4+eQCfdcuLwX7XjcLkkiz3cozFIIzj OYUAn2kEV4XKh+lsPu1cAbt5thOy7oGr =n0q0 -----END PGP SIGNATURE----- --sm4nu43k4a2Rpi4c--