Hi, On Thu, Aug 24, 2017 at 03:45:46PM -0700, Nathan March wrote: > Just in case anyone else on this list is running into similar issues, I > can confirm that the patch appears to have resolved this. > > > I've opened [1]https://bugs.centos.org/view.php?id=13713 > > > It was so bad that having the system under load (with rpmbuild) and > opening another ssh window or two would almost always cause the oops. > It seems the patch you mentioned was merged to upstream Linux here: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71472fa9c52b1da27663c275d416d8654b905f05 and then reverted/removed here: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=896d81fefe5d1919537db2c2150ab6384e4a6610 Do you know if there has been proper/fixed patch after that? has it been merged to upstream Linux kernel already? Thanks, -- Pasi > > > Cheers, > > Nathan > > > > From: CentOS-virt [mailto:centos-virt-bounces at centos.org] On Behalf Of > Nathan March > Sent: Wednesday, August 23, 2017 3:32 PM > To: 'Discussion about the virtualization on CentOS' > <centos-virt at centos.org> > Subject: Re: [CentOS-virt] Major stability problems with xen 4.6.6 > > > > This appears to be a centos kernel issue rather than a xen one. > > > > [2]https://lkml.org/lkml/2016/5/17/440 > > > > Digging through the posts and not clear why this never made it upstream... > > > > I'm going to apply that patch to my systems and see if it resolves, but > won't know for certain until a week or two of stability goes by. > > > > - Nathan > > > > > > From: CentOS-virt [[3]mailto:centos-virt-bounces at centos.org] On Behalf Of > Nathan March > Sent: Wednesday, August 23, 2017 2:48 PM > To: [4]centos-virt at centos.org > Subject: [CentOS-virt] Major stability problems with xen 4.6.6 > > > > Hi, > > > > I'm seeing numerous crashes on the xen 4.6.6-1 / 4.6.6-2 releases, on both > the 4.9.34-29 and 4.9.39-29 kernels. > > > > I've attached a txt with two different servers outputs. > > > > Xen-028: This crashed this morning while running 4.6.6-1 and 4.9.39-29 > > Xen-001: This crashed shortly after being upgraded to 4.6.6-2 and > 4.9.34-29 > > > > Both are on different hardware platforms, and have had a long history of > being stable until these upgrades. > > > > It sounds potentially related to > [5]https://kernel.googlesource.com/pub/scm/linux/kernel/git/tiwai/sound-unstable/+/9ce119f318ba1a07c29149301f1544b6c4bea52a%5E%21/ > but I've confirmed this patch is in the above kernels. > > > > Any suggestions / thoughts? > > > > Cheers, > > Nathan