From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastian Andrzej Siewior Subject: Re: v4.11.12-rt10 - hotplug lockdep splat Date: Mon, 4 Sep 2017 16:58:14 +0200 Message-ID: <20170904145814.tenvql4vdkexfzeb@linutronix.de> References: <20170818120939.b2rj2whb2hgfzjpm@linutronix.de> <1503482024.4970.5.camel@gmx.de> <20170831161834.t7ymwsnpbko6und5@linutronix.de> <1504406890.3054.3.camel@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Cc: Thomas Gleixner , LKML , linux-rt-users , Steven Rostedt To: Mike Galbraith Return-path: Received: from Galois.linutronix.de ([146.0.238.70]:42407 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753667AbdIDO6R (ORCPT ); Mon, 4 Sep 2017 10:58:17 -0400 Content-Disposition: inline In-Reply-To: <1504406890.3054.3.camel@gmx.de> Sender: linux-rt-users-owner@vger.kernel.org List-ID: On 2017-09-03 04:48:10 [+0200], Mike Galbraith wrote: > Missed a spot.  With this on top, lockdep went silent. > > kernel/hrtimer/hotplug: don't wake ktimersoftd while holding the hrtimer base lock > > kernel/hrtimer: don't wakeup a process while holding the hrtimer base lock > missed a path, namely hrtimers_dead_cpu() -> migrate_hrtimer_list(). Defer > raising softirq until after base lock has been released there as well. > > Signed-off-by: Mike Galbraith Thank you, applied. Sebastian