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