From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stas Sergeev Subject: Re: kvm: repeatable kernel crash with Athlon II cpu Date: Tue, 29 Mar 2016 20:10:20 +0300 Message-ID: <56FAB6FC.2000204@list.ru> References: <56FA9DB1.4060704@list.ru> <56FAA135.1080600@redhat.com> <56FAA88C.3050800@list.ru> <56FAACDC.1010802@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Stas Sergeev , Linux kernel , X86 ML To: Paolo Bonzini , kvm@vger.kernel.org Return-path: In-Reply-To: <56FAACDC.1010802@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org 29.03.2016 19:27, Paolo Bonzini =D0=BF=D0=B8=D1=88=D0=B5=D1=82: > On 29/03/2016 18:08, Stas Sergeev wrote: >>>> I've been running dosemu and found out that it hangs >>>> or reboots one of my PCs. This happens with any fedora-23 >>>> kernels and hand-compiled kernels. The latest I tried, were: >>>> 4.4.6-300.fc23.x86_64 >>>> 4.5.0-rc6 >>> >>> Can you check if 4.3 works? >> >> Same crash on kernel-4.2.3-300.fc23.x86_64 - the oldest >> available for f23. >> >>>>>> Hope someone can find such an old CPU an reproduce the problem. >>>>>> Please let me know what info should I provide or what debugging >>>>>> to do to help getting that fixed. >>>> >>>> Do you have experience bisecting the kernel? If so perhaps you ca= n try >>>> doing that. >> But it looks like a genuine bug, not a regression. >=20 > Yeah, I was hoping it was introduced recently. >=20 >> Of course I can check some 3.x versions... >=20 > That would help a lot, thanks. Same on 3.18, and that's the oldest kernel that can be built on f23 (gcc5). So that's a genuine bug after all, not a regression. So does anyone have the AMD AthlonII X2 245 to try reproducing this?