Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936666Ab3DRV7Z (ORCPT ); Thu, 18 Apr 2013 17:59:25 -0400 Received: from mail-we0-f177.google.com ([74.125.82.177]:48169 "EHLO mail-we0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752498Ab3DRV7X (ORCPT ); Thu, 18 Apr 2013 17:59:23 -0400 MIME-Version: 1.0 Reply-To: sedat.dilek@gmail.com In-Reply-To: References: Date: Thu, 18 Apr 2013 23:59:21 +0200 Message-ID: Subject: Re: linux-next: Tree for Apr 18 [ call-trace: drm | x86 | smp | rcu related? ] From: Sedat Dilek To: Daniel Vetter Cc: Stephen Rothwell , linux-next , Linux Kernel Mailing List , x86@kernel.org, Ingo Molnar , Thomas Gleixner , Paul McKenney , Paul McKenney , DRI , Dave Airlie Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2114 Lines: 58 On Thu, Apr 18, 2013 at 9:48 PM, Daniel Vetter wrote: > On Thu, Apr 18, 2013 at 3:05 PM, Sedat Dilek wrote: >> On Thu, Apr 18, 2013 at 10:28 AM, Stephen Rothwell wrote: >>> Hi all, >>> >>> Changes since 20130417: >>> >>> New Trees: rpmsg (actually added yesterday) >>> ppc-temp (replacing powerpc for this week) >>> >>> The ceph tree gained a conflict against Linus' tree. >>> >>> The net-next tree gained a conflict against the infiniband tree. >>> >>> The usb tree gained a build failure so I used the version from >>> next-20130417. >>> >>> I added two merge fix patches after the gen-gpio tree. >>> >>> The ppc-temp tree gained a conflict against the metag tree. >>> >>> The akpm tree lost a patch that turned up elsewhere. >>> >>> ---------------------------------------------------------------------------- >>> >> >> Not sure what the root-cause for this call-trace is (see screenshot). >> >> This is reproducible when running my kernel build-script (4 parallel-make-jobs). >> >> Any hints welcome! > > The panic handlers in our modeset code are pretty decent fubar - they > take mutexes all over the place. So I think the backtrace you see > there is actually a secondary effect. I've looked into fixing this up, > but the issue is that drivers themselves have tons of state protected > with mutexes, which all potentially affects the panic handler. So I've > given up on that for now ... Thanks for taking care. On suspicion [1] I have reverted [2]... NOPE. - Sedat - [1] http://marc.info/?l=linux-kernel&m=136631921208895&w=2 [2] http://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/?id=5a90d1a95356de7a32acb2e5309ac579a891af8f > -Daniel > -- > Daniel Vetter > Software Engineer, Intel Corporation > +41 (0) 79 365 57 48 - http://blog.ffwll.ch -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/