* sched_setaffinity causing "rq->clock_update_flags < RQCF_ACT_SKIP" warning.
@ 2017-02-24 22:19 Dave Jones
2017-02-27 15:06 ` Matt Fleming
0 siblings, 1 reply; 4+ messages in thread
From: Dave Jones @ 2017-02-24 22:19 UTC (permalink / raw)
To: Linux Kernel; +Cc: Matt Fleming
Looks like fallout from cb42c9a3ebbbb23448c3f9a25417fae6309b1a92
WARNING: CPU: 1 PID: 561 at kernel/sched/sched.h:812 set_next_entity+0x11d/0x350
rq->clock_update_flags < RQCF_ACT_SKIP
CPU: 1 PID: 561 Comm: trinity-c36 Not tainted 4.10.0-think+ #6
Call Trace:
dump_stack+0x4f/0x73
__warn+0xcb/0xf0
warn_slowpath_fmt+0x5f/0x80
set_next_entity+0x11d/0x350
set_curr_task_fair+0x2b/0x60
do_set_cpus_allowed+0x138/0x180
__set_cpus_allowed_ptr+0x106/0x250
sched_setaffinity+0x24c/0x2b0
? sched_setaffinity+0x5/0x2b0
SyS_sched_setaffinity+0x7a/0xc0
do_syscall_64+0x61/0x170
entry_SYSCALL64_slow_path+0x25/0x25
RIP: 0033:0x7f461db010f9
RSP: 002b:00007fff76d320a8 EFLAGS: 00000246
ORIG_RAX: 00000000000000cb
RAX: ffffffffffffffda RBX: 00000000000000cb RCX: 00007f461db010f9
RDX: 00007f461ba30000 RSI: 0000000000001000 RDI: 0000000000000234
RBP: 00007f461e0d4000 R08: 00000000000000a6 R09: 00000000000000cf
R10: fffffffffffffffb R11: 0000000000000246 R12: 0000000000000002
R13: 00007f461e0d4048 R14: 00007f461e1d7ad8 R15: 00007f461e0d4000
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: sched_setaffinity causing "rq->clock_update_flags < RQCF_ACT_SKIP" warning.
2017-02-24 22:19 sched_setaffinity causing "rq->clock_update_flags < RQCF_ACT_SKIP" warning Dave Jones
@ 2017-02-27 15:06 ` Matt Fleming
2017-02-28 13:43 ` Chris Wilson
0 siblings, 1 reply; 4+ messages in thread
From: Matt Fleming @ 2017-02-27 15:06 UTC (permalink / raw)
To: Dave Jones, Linux Kernel
On Fri, 24 Feb, at 05:19:03PM, Dave Jones wrote:
> Looks like fallout from cb42c9a3ebbbb23448c3f9a25417fae6309b1a92
>
> WARNING: CPU: 1 PID: 561 at kernel/sched/sched.h:812 set_next_entity+0x11d/0x350
> rq->clock_update_flags < RQCF_ACT_SKIP
> CPU: 1 PID: 561 Comm: trinity-c36 Not tainted 4.10.0-think+ #6
> Call Trace:
> dump_stack+0x4f/0x73
> __warn+0xcb/0xf0
> warn_slowpath_fmt+0x5f/0x80
> set_next_entity+0x11d/0x350
> set_curr_task_fair+0x2b/0x60
> do_set_cpus_allowed+0x138/0x180
> __set_cpus_allowed_ptr+0x106/0x250
> sched_setaffinity+0x24c/0x2b0
> ? sched_setaffinity+0x5/0x2b0
> SyS_sched_setaffinity+0x7a/0xc0
> do_syscall_64+0x61/0x170
> entry_SYSCALL64_slow_path+0x25/0x25
> RIP: 0033:0x7f461db010f9
> RSP: 002b:00007fff76d320a8 EFLAGS: 00000246
> ORIG_RAX: 00000000000000cb
> RAX: ffffffffffffffda RBX: 00000000000000cb RCX: 00007f461db010f9
> RDX: 00007f461ba30000 RSI: 0000000000001000 RDI: 0000000000000234
> RBP: 00007f461e0d4000 R08: 00000000000000a6 R09: 00000000000000cf
> R10: fffffffffffffffb R11: 0000000000000246 R12: 0000000000000002
> R13: 00007f461e0d4048 R14: 00007f461e1d7ad8 R15: 00007f461e0d4000
Should be fixed here,
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?h=sched/urgent&id=a499c3ead88ccf147fc50689e85a530ad923ce36
It'll hopefully be sent to Linus soonish since it's in the
sched/urgent branch.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: sched_setaffinity causing "rq->clock_update_flags < RQCF_ACT_SKIP" warning.
2017-02-27 15:06 ` Matt Fleming
@ 2017-02-28 13:43 ` Chris Wilson
2017-02-28 13:56 ` Chris Wilson
0 siblings, 1 reply; 4+ messages in thread
From: Chris Wilson @ 2017-02-28 13:43 UTC (permalink / raw)
To: Matt Fleming; +Cc: Dave Jones, Linux Kernel
On Mon, Feb 27, 2017 at 03:06:35PM +0000, Matt Fleming wrote:
> On Fri, 24 Feb, at 05:19:03PM, Dave Jones wrote:
> > Looks like fallout from cb42c9a3ebbbb23448c3f9a25417fae6309b1a92
> >
> > WARNING: CPU: 1 PID: 561 at kernel/sched/sched.h:812 set_next_entity+0x11d/0x350
> > rq->clock_update_flags < RQCF_ACT_SKIP
> > CPU: 1 PID: 561 Comm: trinity-c36 Not tainted 4.10.0-think+ #6
> > Call Trace:
> > dump_stack+0x4f/0x73
> > __warn+0xcb/0xf0
> > warn_slowpath_fmt+0x5f/0x80
> > set_next_entity+0x11d/0x350
> > set_curr_task_fair+0x2b/0x60
> > do_set_cpus_allowed+0x138/0x180
> > __set_cpus_allowed_ptr+0x106/0x250
> > sched_setaffinity+0x24c/0x2b0
> > ? sched_setaffinity+0x5/0x2b0
> > SyS_sched_setaffinity+0x7a/0xc0
> > do_syscall_64+0x61/0x170
> > entry_SYSCALL64_slow_path+0x25/0x25
> > RIP: 0033:0x7f461db010f9
> > RSP: 002b:00007fff76d320a8 EFLAGS: 00000246
> > ORIG_RAX: 00000000000000cb
> > RAX: ffffffffffffffda RBX: 00000000000000cb RCX: 00007f461db010f9
> > RDX: 00007f461ba30000 RSI: 0000000000001000 RDI: 0000000000000234
> > RBP: 00007f461e0d4000 R08: 00000000000000a6 R09: 00000000000000cf
> > R10: fffffffffffffffb R11: 0000000000000246 R12: 0000000000000002
> > R13: 00007f461e0d4048 R14: 00007f461e1d7ad8 R15: 00007f461e0d4000
>
> Should be fixed here,
>
> https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?h=sched/urgent&id=a499c3ead88ccf147fc50689e85a530ad923ce36
>
> It'll hopefully be sent to Linus soonish since it's in the
> sched/urgent branch.
I pushed that
commit 7925851af123091a2590110e28ea268840ebd177
Author: Wanpeng Li <wanpeng.li@hotmail.com>
Date: Tue Feb 21 23:52:55 2017 -0800
sched/fair: Update rq clock before changing a task's CPU affinity
to our CI, and we still see the splat
https://intel-gfx-ci.01.org/CI/CI_DRM_2251/fi-byt-n2820/igt@gem_exec_suspend@basic-s3.html
Anything else in that branch that might be the fix?
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: sched_setaffinity causing "rq->clock_update_flags < RQCF_ACT_SKIP" warning.
2017-02-28 13:43 ` Chris Wilson
@ 2017-02-28 13:56 ` Chris Wilson
0 siblings, 0 replies; 4+ messages in thread
From: Chris Wilson @ 2017-02-28 13:56 UTC (permalink / raw)
To: Matt Fleming; +Cc: Dave Jones, Linux Kernel
On Tue, Feb 28, 2017 at 01:43:02PM +0000, Chris Wilson wrote:
> On Mon, Feb 27, 2017 at 03:06:35PM +0000, Matt Fleming wrote:
> > On Fri, 24 Feb, at 05:19:03PM, Dave Jones wrote:
> > > Looks like fallout from cb42c9a3ebbbb23448c3f9a25417fae6309b1a92
> > >
> > > WARNING: CPU: 1 PID: 561 at kernel/sched/sched.h:812 set_next_entity+0x11d/0x350
> > > rq->clock_update_flags < RQCF_ACT_SKIP
> > > CPU: 1 PID: 561 Comm: trinity-c36 Not tainted 4.10.0-think+ #6
> > > Call Trace:
> > > dump_stack+0x4f/0x73
> > > __warn+0xcb/0xf0
> > > warn_slowpath_fmt+0x5f/0x80
> > > set_next_entity+0x11d/0x350
> > > set_curr_task_fair+0x2b/0x60
> > > do_set_cpus_allowed+0x138/0x180
> > > __set_cpus_allowed_ptr+0x106/0x250
> > > sched_setaffinity+0x24c/0x2b0
> > > ? sched_setaffinity+0x5/0x2b0
> > > SyS_sched_setaffinity+0x7a/0xc0
> > > do_syscall_64+0x61/0x170
> > > entry_SYSCALL64_slow_path+0x25/0x25
> > > RIP: 0033:0x7f461db010f9
> > > RSP: 002b:00007fff76d320a8 EFLAGS: 00000246
> > > ORIG_RAX: 00000000000000cb
> > > RAX: ffffffffffffffda RBX: 00000000000000cb RCX: 00007f461db010f9
> > > RDX: 00007f461ba30000 RSI: 0000000000001000 RDI: 0000000000000234
> > > RBP: 00007f461e0d4000 R08: 00000000000000a6 R09: 00000000000000cf
> > > R10: fffffffffffffffb R11: 0000000000000246 R12: 0000000000000002
> > > R13: 00007f461e0d4048 R14: 00007f461e1d7ad8 R15: 00007f461e0d4000
> >
> > Should be fixed here,
> >
> > https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?h=sched/urgent&id=a499c3ead88ccf147fc50689e85a530ad923ce36
> >
> > It'll hopefully be sent to Linus soonish since it's in the
> > sched/urgent branch.
>
> I pushed that
> commit 7925851af123091a2590110e28ea268840ebd177
> Author: Wanpeng Li <wanpeng.li@hotmail.com>
> Date: Tue Feb 21 23:52:55 2017 -0800
>
> sched/fair: Update rq clock before changing a task's CPU affinity
> to our CI, and we still see the splat
> https://intel-gfx-ci.01.org/CI/CI_DRM_2251/fi-byt-n2820/igt@gem_exec_suspend@basic-s3.html
>
> Anything else in that branch that might be the fix?
Ah,
sched/core: Fix update_rq_clock() splat on hotplug (and suspend/resume)
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?h=sched/urgent&id=8cb68b343a66cf19834472012590490d34d31703
sounds likely.
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2017-02-28 15:15 UTC | newest]
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2017-02-24 22:19 sched_setaffinity causing "rq->clock_update_flags < RQCF_ACT_SKIP" warning Dave Jones
2017-02-27 15:06 ` Matt Fleming
2017-02-28 13:43 ` Chris Wilson
2017-02-28 13:56 ` Chris Wilson
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