Re: [PATCH 00/17] Backport rt/deadline crash and the ardous story of FUTEX_UNLOCK_PI to 4.4

2018-12-13 Thread Henrik Austad
On Fri, Dec 14, 2018 at 08:18:26AM +0100, Greg Kroah-Hartman wrote: > On Mon, Nov 19, 2018 at 12:27:21PM +0100, Henrik Austad wrote: > > On Fri, Nov 09, 2018 at 11:35:31AM +0100, Henrik Austad wrote: > > > On Fri, Nov 09, 2018 at 11:07:28AM +0100, Henrik Austad wrote: > > > > From: Henrik Austad

Re: [PATCH 00/17] Backport rt/deadline crash and the ardous story of FUTEX_UNLOCK_PI to 4.4

2018-12-13 Thread Greg Kroah-Hartman
On Mon, Nov 19, 2018 at 12:27:21PM +0100, Henrik Austad wrote: > On Fri, Nov 09, 2018 at 11:35:31AM +0100, Henrik Austad wrote: > > On Fri, Nov 09, 2018 at 11:07:28AM +0100, Henrik Austad wrote: > > > From: Henrik Austad > > > > > > Short story: > > > > Sorry for the spam, it looks like I was

Re: [PATCH 00/17] Backport rt/deadline crash and the ardous story of FUTEX_UNLOCK_PI to 4.4

2018-11-19 Thread Henrik Austad
On Fri, Nov 09, 2018 at 11:35:31AM +0100, Henrik Austad wrote: > On Fri, Nov 09, 2018 at 11:07:28AM +0100, Henrik Austad wrote: > > From: Henrik Austad > > > > Short story: > > Sorry for the spam, it looks like I was not very specific in /which/ > version I targeted this to, as well as not

Re: [PATCH 00/17] Backport rt/deadline crash and the ardous story of FUTEX_UNLOCK_PI to 4.4

2018-11-19 Thread Henrik Austad
On Fri, Nov 09, 2018 at 11:35:31AM +0100, Henrik Austad wrote: > On Fri, Nov 09, 2018 at 11:07:28AM +0100, Henrik Austad wrote: > > From: Henrik Austad > > > > Short story: > > Sorry for the spam, it looks like I was not very specific in /which/ > version I targeted this to, as well as not

Re: [PATCH 00/17] Backport rt/deadline crash and the ardous story of FUTEX_UNLOCK_PI to 4.4

2018-11-09 Thread Henrik Austad
On Fri, Nov 09, 2018 at 11:07:28AM +0100, Henrik Austad wrote: > From: Henrik Austad > > Short story: Sorry for the spam, it looks like I was not very specific in /which/ version I targeted this to, as well as not providing a full Cc-list for the cover-letter. The series is targeted at

Re: [PATCH 00/17] Backport rt/deadline crash and the ardous story of FUTEX_UNLOCK_PI to 4.4

2018-11-09 Thread Henrik Austad
On Fri, Nov 09, 2018 at 11:07:28AM +0100, Henrik Austad wrote: > From: Henrik Austad > > Short story: Sorry for the spam, it looks like I was not very specific in /which/ version I targeted this to, as well as not providing a full Cc-list for the cover-letter. The series is targeted at

[PATCH 00/17] Backport rt/deadline crash and the ardous story of FUTEX_UNLOCK_PI to 4.4

2018-11-09 Thread Henrik Austad
From: Henrik Austad Short story: The following patches are needed on a 4.4 kernel to avoid Oops in the scheduler when a sched_rr and sched_deadline task contends on the same futex (with PI). Longer story: On one of our arm64 systems, we occasionally crash with an Oops in the scheduler with

[PATCH 00/17] Backport rt/deadline crash and the ardous story of FUTEX_UNLOCK_PI to 4.4

2018-11-09 Thread Henrik Austad
From: Henrik Austad Short story: The following patches are needed on a 4.4 kernel to avoid Oops in the scheduler when a sched_rr and sched_deadline task contends on the same futex (with PI). Longer story: On one of our arm64 systems, we occasionally crash with an Oops in the scheduler with