Bug 23062

Summary:	kvm segfaults on 2.6.36-64bit kernel with 32 bit userspace
Product:	Virtualization	Reporter:	Jorge Boncompte (jorge)
Component:	kvm	Assignee:	Avi Kivity (avi)
Status:	CLOSED CODE_FIX
Severity:	high	CC:	avi, benisty.e, florian, jorge, maciej.rutecki, rjw
Priority:	P1
Hardware:	x86-64
OS:	Linux
Kernel Version:	2.6.36	Subsystem:
Regression:	Yes	Bisected commit-id:
Bug Depends on:
Bug Blocks:	16444

Description Jorge Boncompte 2010-11-17 11:59:46 UTC

qemu-kvm 0.12.5 and 0.13.0 from debian and compiled from sources segfaults for me on a vanilla 2.6.36 64bit kernel and debian squeeze 32bit userspace.

	Doing a bisection resulted on commit 9581d442b905 (KVM: Fix fs/gs reload oops with invalid ldt), reverting it fixes the problem and survived a new debian-amd64 install.

	Regards,
		Jorge

Comment 1 Rafael J. Wysocki 2010-11-17 21:03:22 UTC

First-Bad-Commit : 9581d442b905

Comment 2 Avi Kivity 2010-11-20 13:06:30 UTC

Fixed upstream (c8770e7ba63bb5dd); patches to be posted for 2.6.36.