linux-kernel - Re: [PATCH PREEMPT RT] rt-mutex: fix deadlock in device mapper

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Message-ID: <1511185762.11475.43.camel@gmx.de>
Date:   Mon, 20 Nov 2017 14:49:22 +0100
From:   Mike Galbraith <efault@....de>
To:     Sebastian Siewior <bigeasy@...utronix.de>
Cc:     Mikulas Patocka <mpatocka@...hat.com>,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        linux-rt-users@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH PREEMPT RT] rt-mutex: fix deadlock in device mapper

On Mon, 2017-11-20 at 13:43 +0100, Mike Galbraith wrote:

> The problem was converted spinlocks (and added RT locks).

But I suppose lockdep should gripe about that these days...