From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752698AbcCASZv (ORCPT ); Tue, 1 Mar 2016 13:25:51 -0500 Received: from smtprelay0121.hostedemail.com ([216.40.44.121]:53669 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750846AbcCASZu (ORCPT ); Tue, 1 Mar 2016 13:25:50 -0500 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 50,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::::,RULES_HIT:41:355:379:541:599:800:960:967:973:988:989:1260:1263:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1540:1593:1594:1711:1730:1747:1777:1792:2393:2525:2553:2560:2563:2682:2685:2859:2911:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3352:3622:3865:3867:3868:3870:3872:3874:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4321:4425:5007:6261:7875:7901:7903:8599:8985:9025:10004:10400:10848:10913:10967:11026:11232:11473:11658:11914:12043:12517:12519:12555:12663:12682:12740:12783:13069:13311:13357:13439:14096:14097:14659:21080:21324:30054:30070:30090:30091,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:4,LUA_SUMMARY:none X-HE-Tag: oven55_6cc47ce5b1939 X-Filterd-Recvd-Size: 2184 Date: Tue, 1 Mar 2016 13:25:46 -0500 From: Steven Rostedt To: Sebastian Andrzej Siewior Cc: linux-kernel@vger.kernel.org, linux-rt-users , Thomas Gleixner , Carsten Emde , Sebastian Andrzej Siewior , John Kacur , Paul Gortmaker Subject: Re: [PATCH RT 07/12] dump stack: dont disable preemption during trace Message-ID: <20160301132546.4aef9949@gandalf.local.home> In-Reply-To: <20160301094505.31726f5e@gandalf.local.home> References: <20160226213235.253312067@goodmis.org> <20160226213341.100625803@goodmis.org> <20160227103206.GA2337@breakpoint.cc> <20160301094505.31726f5e@gandalf.local.home> X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.29; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 1 Mar 2016 09:45:05 -0500 Steven Rostedt wrote: > On Sat, 27 Feb 2016 11:32:06 +0100 > Sebastian Andrzej Siewior wrote: > > > On 2016-02-26 16:32:42 [-0500], Steven Rostedt wrote: > > > 3.18.27-rt26-rc1 stable review patch. > > > If anyone has any objections, please let me know. > > > > Please merge this one along with "kernel: migrate_disable() do fastpath > > in atomic & irqs-off". Otherwise we might get recursive with lockdep and > > CPU-hotplug (if we go after hp->lock in pin_current_cpu()). > > Interesting. When I pulled this patch into 4.1-rt, it caused the system > to lock up. I'm looking into it now. And that's because this commit also needs: "kernel: softirq: unlock with irqs on" And due to the WARN_ON_ONCE() issue (that I just posted a patch to fix mainline), it caused my system to reboot. http://lkml.kernel.org/r/20160301110939.1b786f49@gandalf.local.home -- Steve