Re: [Crash-utility] crash does not support recent qemu save-vm formats
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----- "Sergey Svishchev" <svs(a)ropnet.ru> wrote:
Hi,
I've been trying to diagnose a livelock-like condition (no response to
ping, serial console dead, KVM process consumes 100% CPU) of KVM virtual
machines on Ubuntu 9.10 (Ubuntu AMD64 kernel 2.6.31-17-server, QEMU
0.11.0 and libvirt 0.7.0).
"virsh dump" generates a dump file that crash cannot read:
crash: qemu-load.c:501: cpu_init_load_64: Assertion `version_id >= 4 &&
version_id <= 9' failed.
Indeed, CPU_SAVE_VERSION in this dump file is 10.
See also https://bugs.launchpad.net/ubuntu/+source/crash/+bug/559219
--
Sergey Svishchev
I'll check with the author of the crash qemu code.
BTW, if you follow the advice in the ubuntu bug description, does
the crash session work normally?
Dave
Sergey Svishchev
Friday, 23 April
Fri, 23 Apr
8:31 a.m.
New subject: crash does not support recent qemu save-vm formats
Dave Anderson wrote:
> See also
https://bugs.launchpad.net/ubuntu/+source/crash/+bug/559219
>
> --
> Sergey Svishchev
BTW, if you follow the advice in the ubuntu bug description, does
the crash session work normally?
(It's my bug report :-)
Yes, mostly. Date is wrong (DATE: Sun Oct 26 03:35:21 2594), 'bt'
reports some errors but otherwise backtraces look sane.
crash> bt
PID: 0 TASK: ffffffff81796600 CPU: 0 COMMAND: "swapper"
#0 [ffffffff8176fe58] schedule at ffffffff81525251
bt: invalid kernel virtual address: 41 type: "call byte"
bt: invalid kernel virtual address: 1587b type: "call byte"
bt: invalid kernel virtual address: 1587b type: "call byte"
bt: invalid kernel virtual address: 1587b type: "call byte"
bt: invalid kernel virtual address: 1587b type: "call byte"
bt: invalid kernel virtual address: 1587b type: "call byte"
bt: invalid kernel virtual address: 1587b type: "call byte"
bt: invalid kernel virtual address: 1587b type: "call byte"
bt: invalid kernel virtual address: 6db6db6db6db6db2 type: "call byte"
bt: invalid kernel virtual address: 937fb type: "call byte"
#1 [ffffffff8176ff00] cpu_idle at ffffffff81010e45
--
Sergey Svishchev
5181
days inactive
5181
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Sergey Svishchev