From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1GDeT3-0002U2-8u for qemu-devel@nongnu.org; Thu, 17 Aug 2006 05:47:13 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1GDeSy-0002R2-Vz for qemu-devel@nongnu.org; Thu, 17 Aug 2006 05:47:12 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1GDeSy-0002Qx-OM for qemu-devel@nongnu.org; Thu, 17 Aug 2006 05:47:08 -0400 Received: from [80.12.242.1] (helo=smtp-msa-out19.orange.fr) by monty-python.gnu.org with esmtp (Exim 4.52) id 1GDeZQ-0008W4-P8 for qemu-devel@nongnu.org; Thu, 17 Aug 2006 05:53:49 -0400 Message-ID: <44E43B4B.2050503@bellard.org> Date: Thu, 17 Aug 2006 11:47:55 +0200 From: Fabrice Bellard MIME-Version: 1.0 Subject: Re: [Qemu-devel] qemu under x86_64: grub segfault, ld-linux.so segfault, lost ticks References: <44E2D26E.50101@artenumerica.com> In-Reply-To: <44E2D26E.50101@artenumerica.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: jmce@artenumerica.com Cc: qemu-devel@nongnu.org Hi, You can use gdb in the virtual machine to see where are the segmentation faults and provide a register dump and a short disassembly output. Regards, Fabrice. J M Cerqueira Esteves wrote: > As I said before, under > > Host CPU: AMD Athlon 64 3500+ (machine: HP dx5150 MT) > Host operating system: Ubuntu 6.06 LTS > Host kernel: one of the Ubuntu pre-packaged ones, > 2.6.15-26-amd64-k8 (SMP PREEMPT) > QEMU: 0.8.2, configured with -cc=gcc-3.4 --enable-alsa > kqemu: 1.3.0pre9 > > I couldn't install Debian amd64 testing (etch) > in a vm because of an "Unexpected exception 0x0d" > on the host, crashing qemu. > > I'm able to install If I *disable* use of kqemu, but: > > - grub segfaults, failing to install the boot loader on the guest hard > disk (previously also noticed this installing a kubuntu guest), > so I used lilo; > > - installing new Debian amd64 kernel packages seems to work, except > that I get an error like this on the console: > ld-linux.so.2[5145]: segfault at 00000000ffffbffc rip > 0000000056565019 rsp ffff8100ffffc000 error 6 > > - I get warnings about lost ticks and the clock runs too fast: > > warning: many lost ticks > Your time source seems to be instable or some driver is hogging > interrupts > > > Best regards > J Esteves >