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[Qemu-devel] Re: [Bug 595438] Re: KVM segmentation fault, using SCSI+wri
[Qemu-devel] Re: [Bug 595438] Re: KVM segmentation fault, using SCSI+writeback and linux 2.4 guest
Wed, 01 Dec 2010 06:33:24 -0000
Fedora1? Seriously? :-P
KVM segmentation fault, using SCSI+writeback and linux 2.4 guest
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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: Fix Committed
Status in “qemu-kvm” package in Debian: Fix Released
I Use Ubuntu 32 bit 10.04 with standard KVM.
I have Intel E7600 @ 3.06GHz processor with VMX
In this system I Run:
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
-monitor chardev:monitor -boot d -drive
-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
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
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.
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Dustin Kirkland <=