Package: qemu-kvm Version: 0.12.3+dfsg-4 Severity: important Hi,
qemu-kvm 0.12.3 causes guests to hang after a live migration. The crash seems to be related to the guest's virtio subsystem, as per the following backtrace obtained _in the guest_: May 7 14:17:32 kot kernel: [ 285.035681] irq 11: nobody cared (try booting with the "irqpoll" option) May 7 14:17:32 kot kernel: [ 285.035681] Pid: 0, comm: swapper Not tainted 2.6.26-2-amd64 #1 May 7 14:17:32 kot kernel: [ 285.035681] May 7 14:17:32 kot kernel: [ 285.035681] Call Trace: May 7 14:17:32 kot kernel: [ 285.035681] <IRQ> [<ffffffffa008b06c>] :virtio_pci:vp_interrupt+0x27/0xb8 May 7 14:17:32 kot kernel: [ 285.035681] [<ffffffff8026c6d3>] __report_bad_irq+0x30/0x72 May 7 14:17:32 kot kernel: [ 285.035681] [<ffffffff8026c912>] note_interrupt+0x1fd/0x23b May 7 14:17:32 kot kernel: [ 285.035681] [<ffffffff8026d19b>] handle_fasteoi_irq+0xa5/0xc8 May 7 14:17:32 kot kernel: [ 285.035681] [<ffffffff8020f5dc>] do_IRQ+0x6d/0xd9 May 7 14:17:32 kot kernel: [ 285.035681] [<ffffffff8020b093>] default_idle+0x0/0x49 May 7 14:17:32 kot kernel: [ 285.035681] [<ffffffff8020c45d>] ret_from_intr+0x0/0x19 May 7 14:17:32 kot kernel: [ 285.035681] <EOI> [<ffffffff8021a717>] lapic_next_event+0x0/0x13 May 7 14:17:32 kot kernel: [ 285.035681] [<ffffffff8021eb64>] native_safe_halt+0x2/0x3 May 7 14:17:32 kot kernel: [ 285.035681] [<ffffffff8021eb64>] native_safe_halt+0x2/0x3 May 7 14:17:32 kot kernel: [ 285.035681] [<ffffffff8020b0bd>] default_idle+0x2a/0x49 May 7 14:17:32 kot kernel: [ 285.035681] [<ffffffff8020ad04>] cpu_idle+0x8e/0xb8 May 7 14:17:32 kot kernel: [ 285.035681] May 7 14:17:32 kot kernel: [ 285.035681] handlers: May 7 14:17:32 kot kernel: [ 285.035681] [<ffffffff8038f27b>] (usb_hcd_irq+0x0/0x78) May 7 14:17:32 kot kernel: [ 285.035681] [<ffffffffa008b045>] (vp_interrupt+0x0/0xb8 [virtio_pci]) May 7 14:17:32 kot kernel: [ 285.035681] Disabling IRQ #11 This happens in a reproducible fashion on a guest with the following setup: * Virtio net + block devices * 8 CPU SMP * 521 MB RAM * Debian Lenny with 2.6.26-2-amd64 Just migrating the guest a couple of times with a bit of I/O activity will cause it to freeze completely. It does *not* seem to impact the following: * Guests with no virtio devices * Guests running 2.6.32-4-amd64 * Guests running under qemu-kvm-0.11.1 Thus, it seems to be virtio-specific and possibly related to the guest kernel, but since qemu-kvm-0.11.1 works fine, I'm filing it as a qemu-kvm regression and not a kernel bug. Thank you -- System Information: Debian Release: 5.0.4 APT prefers stable APT policy: (500, 'stable'), (80, 'testing'), (70, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 2.6.32-bpo.4-amd64 (SMP w/2 CPU cores) Locale: LANG=el_GR.UTF-8, LC_CTYPE=el_GR.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages qemu-kvm depends on: ii adduser 3.110 add and remove users and groups ii bridge-utils 1.4-5 Utilities for configuring the Linu ii iproute 20080725-2 networking and traffic control too ii libasound2 1.0.21a-1 shared library for ALSA applicatio ii libbluetooth2 3.36-1 Library to use the BlueZ Linux Blu ii libbrlapi0.5 3.10~r3724-1+lenny1 braille display access via BRLTTY ii libc6 2.10.2-2 GNU C Library: Shared libraries ii libcurl3-gnutls 7.18.2-8lenny4 Multi-protocol file transfer libra ii libgnutls26 2.8.5-2 the GNU TLS library - runtime libr ii libncurses5 5.7+20081213-1 shared libraries for terminal hand ii libpci3 1:3.0.0-6 Linux PCI Utilities (shared librar ii libpulse0 0.9.21-1 PulseAudio client libraries ii libsasl2-2 2.1.22.dfsg1-23+lenny1 Cyrus SASL - authentication abstra ii libsdl1.2debian 1.2.13-2 Simple DirectMedia Layer ii libvdeplug2 2.2.2-3 Virtual Distributed Ethernet - Plu ii libx11-6 2:1.1.5-2 X11 client-side library ii python 2.5.2-3 An interactive high-level object-o ii zlib1g 1:1.2.3.3.dfsg-12 compression library - runtime Versions of packages qemu-kvm recommends: ii linux-image-2.6.26-2-amd 2.6.26-21lenny4 Linux 2.6.26 image on AMD64 ii linux-image-2.6.32-bpo.4 2.6.32-11 Linux 2.6.32 for 64-bit PCs Versions of packages qemu-kvm suggests: ii debootstrap 1.0.10lenny1 Bootstrap a basic Debian system ii hal 0.5.11-8 Hardware Abstraction Layer -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
