Bug 16158

Summary: winxp guest hangs after idle for ~30 minutes
Product: Virtualization Reporter: brimhall
Component: kvmAssignee: Avi Kivity (avi)
Severity: high CC: akpm, avi, brimhall, maciej.rutecki, rjw
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.34 Subsystem:
Regression: Yes Bisected commit-id:
Bug Depends on:    
Bug Blocks: 15310    

Description brimhall 2010-06-08 17:52:38 UTC
When I switched to 2.6.34 after being on and below, my kvm-qemu winxp guest hanged consistently after being idle for ~30 minutes.

I thought it was the kvm-qemu 0.12.4 which had also been upgraded, but after downgrading to kvm-qemu 0.12.3 and 0.11.1 I still saw the same behavior, so guessing the issue is with the kernel module.

System details:
debian "testing" amd64, intel i7-920, 6 Gb memory.
Comment 1 Avi Kivity 2010-06-09 09:05:55 UTC
Any chance of a bisect to see what's the cause?

'git bisect start v2.6.34 v2.6.35 virt/kvm arch/x86/kvm' should get you there.

Also of interest

- 'info registers' of a hung guest
- 'x /30i $eip - 30 of same
Comment 2 Avi Kivity 2010-06-09 09:07:11 UTC
Sorry, the bisect command should be

  git bisect start v2.6.34 v2.6.33 virt/kvm arch/x86/kvm
Comment 3 brimhall 2010-06-14 01:28:08 UTC
Bug still open. Need to figure out how to do kvm-qemu console to get the output from the "info registers" above.

Comment 4 Avi Kivity 2010-06-15 18:42:05 UTC
Press alt-ctrl-2 in the qemmu window


start qemu-kvm with the option '-monitor stdio'