[Bug 1458045] Re: KVM and CFS bandwidth control causes kernel crashes (oops)

2015-09-24 Thread Launchpad Bug Tracker
[Expired for linux (Ubuntu) because there has been no activity for 60 days.] ** Changed in: linux (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1458045 T

[Bug 1458045] Re: KVM and CFS bandwidth control causes kernel crashes (oops)

2015-07-26 Thread Christopher M. Penalver
Mohammed Naser, did you personally test the patch in #7 and confirm it fixes your issue? ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/b

[Bug 1458045] Re: KVM and CFS bandwidth control causes kernel crashes (oops)

2015-07-21 Thread Mohammed Naser
This seems to have taken care of it http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?id=54d27365cae88fbcc853b391dcd561e71acb81fa -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1458045 T

[Bug 1458045] Re: KVM and CFS bandwidth control causes kernel crashes (oops)

2015-05-28 Thread Joseph Salisbury
** Changed in: linux (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1458045 Title: KVM and CFS bandwidth control causes kernel crashes (oops) To manage noti

[Bug 1458045] Re: KVM and CFS bandwidth control causes kernel crashes (oops)

2015-05-28 Thread Mohammed Naser
Chris, There's been a few other proposed patches, but my biggest issue now is trying to replicate it over here before trying to look at patches, or else there's no way for me to say "this works". I'm working on something to try and replicate it today and I'll keep this bug updated.. I hope it goe

[Bug 1458045] Re: KVM and CFS bandwidth control causes kernel crashes (oops)

2015-05-27 Thread Chris J Arges
@mnaser, I haven't had a ton of time to look into this yet. Have you tried the following to see if you still get an issue? 1) Running a 4.0+ kernel 2) Patching with https://lkml.org/lkml/2015/4/7/611 Also it may be helpful to know how you are configuring cgroups for your qemu processes in order t

[Bug 1458045] Re: KVM and CFS bandwidth control causes kernel crashes (oops)

2015-05-27 Thread Christopher M. Penalver
** Tags added: bios-outdated-1.2.10 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1458045 Title: KVM and CFS bandwidth control causes kernel crashes (oops) To manage notifications about this bug go

[Bug 1458045] Re: KVM and CFS bandwidth control causes kernel crashes (oops)

2015-05-26 Thread Mohammed Naser
There is currently a pending patch for this issue, I'll update the bug when it lands http://lkml.iu.edu/hypermail/linux/kernel/1505.3/01029.html http://lkml.iu.edu/hypermail/linux/kernel/1505.3/01030.html Thank you -- You received this bug notification because you are a member of Ubuntu Bugs, w

[Bug 1458045] Re: KVM and CFS bandwidth control causes kernel crashes (oops)

2015-05-22 Thread Mohammed Naser
I suspect the following has occured: https://github.com/torvalds/linux/blob/v3.16/kernel/sched/fair.c#L4829 if (!cfs_rq->nr_running) goto idle; put_prev_task(rq, prev); do { se = pick_next_entity(cfs_rq, NULL); set_next_enti

[Bug 1458045] Re: KVM and CFS bandwidth control causes kernel crashes (oops)

2015-05-22 Thread Mohammed Naser
Just wanted to add this as it might be useful (I'm trying to do troubleshooting): crash> dis -rl 810af2f8 /build/buildd/linux-lts-utopic-3.16.0/kernel/sched/fair.c: 4745 0x810af280 : nopl 0x0(%rax,%rax,1) 0x810af285 : push %rbp /build/buildd/linux-lts-utopic-3

[Bug 1458045] Re: KVM and CFS bandwidth control causes kernel crashes (oops)

2015-05-22 Thread Mohammed Naser
** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1458045 Title: KVM and CFS bandwidth control causes kernel crashes (oops) To manag