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Re: Possible BT deadlock due to recursive read locking (Was: Re: kernel BUG at kernel/locking/rtmutex.c:1059)

From Mart van de Wege <mvdwege@mail.com> (by way of Mart van de Wege <mvdwege@gmail.com>)
Newsgroups linux.kernel
Subject Re: Possible BT deadlock due to recursive read locking (Was: Re: kernel BUG at kernel/locking/rtmutex.c:1059)
Date 2017-09-02 16:00 +0200
Message-ID <ulh7Q-3Ed-9@gated-at.bofh.it> (permalink)
References <ukz6O-6TE-23@gated-at.bofh.it> <ukz6O-6TE-25@gated-at.bofh.it> <ukPXY-1xv-23@gated-at.bofh.it>
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On Fri, 1 Sep 2017 10:51:07 +0200
Mart van de Wege <mvdwege@gmail.com> wrote:

> On Thu, 31 Aug 2017 16:52:12 +0200
> Sebastian Andrzej Siewior <bigeasy@linutronix.de> wrote:
> 
> > On 2017-08-30 23:25:53 [+0200], Mart van de Wege wrote:  
> > > Hi,    
> > Hi,
> >   
> > > The issue persists up to v4.11.12-rt10    
> > Does
> > 	CONFIG_RWLOCK_RT_READER_BIASED=y
> > make it go away?
> >   
> Yes, that does make it go away. -rt8 now boots cleanly, and works
> fine. Building -rt10 now to be sure.
> 
Confirm that as of 4.11.12-rt11 the deadlock still goes away when
enabling CONFIG_RWLOCK_RT_READER_BIASED

Mart

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Possible BT deadlock due to recursive read locking (Was: Re: kernel  BUG at kernel/locking/rtmutex.c:1059) Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2017-08-31 17:00 +0200
  Re: Possible BT deadlock due to recursive read locking (Was: Re:  kernel BUG at kernel/locking/rtmutex.c:1059) Mart van de Wege <mvdwege@gmail.com> - 2017-09-01 11:00 +0200
    Re: Possible BT deadlock due to recursive read locking (Was: Re:  kernel BUG at kernel/locking/rtmutex.c:1059) Mart van de Wege <mvdwege@mail.com> (by way of Mart van de Wege         <mvdwege@gmail.com>) - 2017-09-02 16:00 +0200

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