SRU ack, please upload. -- KVM segmentation fault, using SCSI+writeback and linux 2.4 guest https://bugs.launchpad.net/bugs/595438 You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU.
Status in Kernel Virtual Machine: Confirmed Status in QEMU: Fix Committed Status in qemu-kvm: Fix Released Status in “qemu-kvm” package in Ubuntu: Fix Released Status in “qemu-kvm” source package in Lucid: In Progress Bug description: I Use Ubuntu 32 bit 10.04 with standard KVM. I have Intel E7600 @ 3.06GHz processor with VMX In this system I Run: LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm -M pc-0.12 -enable-kvm -m 256 -smp 1 -name spamsender -uuid b9cacd5e-08f7-41fd-78c8-89cec59af881 -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/spamsender.monitor,server,nowait -monitor chardev:monitor -boot d -drive file=/mnt/megadiff/cdiso_400_130.iso,if=ide,media=cdrom,index=2 -drive file=/home/mmarkk/spamsender2.img,if=scsi,index=0,format=qcow2,cache=writeback -net nic,macaddr=00:00:00:00:00:00,vlan=0,name=nic.0 -net tap,vlan=0,name=tap.0 -chardev pty,id=serial0 -serial chardev:serial0 -parallel none -usb -vnc 127.0.0.1:0 -vga cirrus .iso image contain custom distro of 2.4-linux kernel based system. During install process (when .tar.gz actively unpacked), kvm dead with segmentation fault. And ONLY when I choose scsi virtual disk and writeback simultaneously. But, writeback+ide, writethrough+scsi works OK. I use qcow2. It seems, that qcow does not have such problems. Virtual machine get down at random time during file copy. It seems, when qcow2 file size need to be expanded. IMPACT: kvm used with scsi virtual disk and writeback dies with segfault. FIX: is the inclusion of a patch cherry-picked from upstream which dequeues requests before invoking callbacks. It is at http://bazaar.launchpad.net/~serge-hallyn/ubuntu/lucid/qemu-kvm/fix-scsi-writeback/revision/70 TO REPRODUCE: See the command above. REGRESSION POTENTIAL: this is cherry-picked from upstream, and has been tested by the bug reporter with no ill effects.
