On 07/05/2012 07:12 AM, Peter Lieven wrote: > On 07/03/12 15:13, Avi Kivity wrote: >> On 07/03/2012 04:01 PM, Peter Lieven wrote: >>> Further output from my testing. >>> >>> Working: >>> Linux 2.6.38 with included kvm module >>> Linux 3.0.0 with included kvm module >>> >>> Not-Working: >>> Linux 3.2.0 with included kvm module >>> Linux 2.6.28 with kvm-kmod 3.4 >>> Linux 3.0.0 with kvm-kmod 3.4 >>> Linux 3.2.0 with kvm-kmod 3.4 >>> >>> I can trigger the race with any of qemu-kvm 0.12.5, 1.0 or 1.0.1. >>> It might be that the code was introduced somewhere between 3.0.0 >>> and 3.2.0 in the kvm kernel module and that the flaw is not >>> in qemu-kvm. >>> >>> Any hints? >>> >> A bisect could tell us where the problem is. >> >> To avoid bisecting all of linux, try >> >> git bisect v3.2 v3.0 virt/kvm arch/x86/kvm > here we go: > > commit ca7d58f375c650cf36900cb1da1ca2cc99b13393 > Author: Xiao Guangrong <xiaoguangr...@cn.fujitsu.com> > Date: Wed Jul 13 14:31:08 2011 +0800 > > KVM: x86: fix broken read emulation spans a page boundary
Ah, i will try to reproduce it and fix it. Thanks for your work.
