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* Re: [BUG RT] backtrace on v5.2.9-rt3
       [not found] <20190830120106.301bd9f3@gandalf.local.home>
@ 2019-09-13 13:42 ` Sebastian Andrzej Siewior
  2019-09-13 14:13   ` Sean V Kelley
  0 siblings, 1 reply; 2+ messages in thread
From: Sebastian Andrzej Siewior @ 2019-09-13 13:42 UTC (permalink / raw)
  To: Steven Rostedt; +Cc: Sean V Kelley, LKML, linux-rt-users, Thomas Gleixner

On 2019-08-30 12:01:06 [-0400], Steven Rostedt wrote:
> 
> I'm triggering the following call splat on 5.2-rt.
> 
> [   63.099414] 006: BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:968
> [   63.108423] 006: in_atomic(): 0, irqs_disabled(): 1, pid: 173, name: kworker/6:1
> [   63.141041] 006: Call Trace:
> [   63.143916] 006:  dump_stack+0x5c/0x80
> [   63.147654] 006:  ___might_sleep.cold.92+0x8d/0x9a
> [   63.152423] 006:  rt_spin_lock+0x31/0x40
> [   63.156332] 006:  intel_engine_breadcrumbs_irq+0x56/0x320 [i915]
> [   63.162350] 006:  intel_engine_signal_breadcrumbs+0x11/0x20 [i915]
> [   63.168540] 006:  i915_hangcheck_elapsed+0x199/0x420 [i915]
> [   63.309375] 006:  process_one_work+0x1e8/0x4c0
> Attached is the config and the full dmesg.

just for book keeping: Clark reported the same thing, posted patches and
will try an alternative on Monday (as far as I'm been told). I will
continue to reply in the other thread.

Sebastian

^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [BUG RT] backtrace on v5.2.9-rt3
  2019-09-13 13:42 ` [BUG RT] backtrace on v5.2.9-rt3 Sebastian Andrzej Siewior
@ 2019-09-13 14:13   ` Sean V Kelley
  0 siblings, 0 replies; 2+ messages in thread
From: Sean V Kelley @ 2019-09-13 14:13 UTC (permalink / raw)
  To: Sebastian Andrzej Siewior
  Cc: Steven Rostedt, Sean V Kelley, LKML, linux-rt-users, Thomas Gleixner



> On Sep 13, 2019, at 6:42 AM, Sebastian Andrzej Siewior <bigeasy@linutronix.de> wrote:
> 
> On 2019-08-30 12:01:06 [-0400], Steven Rostedt wrote:
>> 
>> I'm triggering the following call splat on 5.2-rt.
>> 
>> [   63.099414] 006: BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:968
>> [   63.108423] 006: in_atomic(): 0, irqs_disabled(): 1, pid: 173, name: kworker/6:1
> …
>> [   63.141041] 006: Call Trace:
>> [   63.143916] 006:  dump_stack+0x5c/0x80
>> [   63.147654] 006:  ___might_sleep.cold.92+0x8d/0x9a
>> [   63.152423] 006:  rt_spin_lock+0x31/0x40
>> [   63.156332] 006:  intel_engine_breadcrumbs_irq+0x56/0x320 [i915]
>> [   63.162350] 006:  intel_engine_signal_breadcrumbs+0x11/0x20 [i915]
>> [   63.168540] 006:  i915_hangcheck_elapsed+0x199/0x420 [i915]
> …
>> [   63.309375] 006:  process_one_work+0x1e8/0x4c0
> …
>> Attached is the config and the full dmesg.
> 
> just for book keeping: Clark reported the same thing, posted patches and
> will try an alternative on Monday (as far as I'm been told). I will
> continue to reply in the other thread.
> 
> Sebastian

I was able to reproduce Clark’s earlier splat report and also test the posted patches with no issues. 
This was also the approach that Chris Wilson suggested.  I agree Steven’s issue looks to be the same, but with LPC did not have time to go back to it.

Sean

^ permalink raw reply	[flat|nested] 2+ messages in thread

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     [not found] <20190830120106.301bd9f3@gandalf.local.home>
2019-09-13 13:42 ` [BUG RT] backtrace on v5.2.9-rt3 Sebastian Andrzej Siewior
2019-09-13 14:13   ` Sean V Kelley

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