From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julia Lawall Subject: Re: WARNING in untrack_pfn Date: Fri, 12 Apr 2019 15:21:42 +0200 (CEST) Message-ID: References: <000000000000f70a0e0571ad8ffb@google.com> <0000000000007b03eb058653caea@google.com> <20190412130112.GA8384@amd> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Return-path: In-Reply-To: <20190412130112.GA8384@amd> Sender: linux-kernel-owner@vger.kernel.org To: Pavel Machek Cc: syzbot , Julia.Lawall@lip6.fr, bp@alien8.de, dan.j.williams@intel.com, dave.hansen@linux.intel.com, dave.jiang@intel.com, haozhong.zhang@intel.com, hpa@zytor.com, jacek.anaszewski@gmail.com, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, luto@kernel.org, mingo@redhat.com, pbonzini@redhat.com, peterz@infradead.org, rkrcmar@redhat.com, rpurdie@rpsys.net, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org List-Id: linux-leds@vger.kernel.org On Fri, 12 Apr 2019, Pavel Machek wrote: > On Fri 2019-04-12 04:42:01, syzbot wrote: > > syzbot has bisected this bug to: > > > > commit c68729119f4d2993bec3c9cb999ad76de5aeddba > > Author: Julia Lawall > > Date: Sat Jul 15 09:58:19 2017 +0000 > > > > leds: tlc591xx: add missing of_node_put > > > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12cda0f3200000 > > start commit: 23203e3f Merge branch 'akpm' (patches from Andrew) > > git tree: upstream > > final crash: https://syzkaller.appspot.com/x/report.txt?x=11cda0f3200000 > > console output: https://syzkaller.appspot.com/x/log.txt?x=16cda0f3200000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=861a3573f4e78ba1 > > dashboard link: https://syzkaller.appspot.com/bug?extid=e1a4f80c370d2381e49f > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17836d15400000 > > > > Reported-by: syzbot+e1a4f80c370d2381e49f@syzkaller.appspotmail.com > > Fixes: c68729119f4d ("leds: tlc591xx: add missing of_node_put") > > > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > > Can you revert c68729119f4d2993bec3c9cb999ad76de5aeddba on master and > see if it fixes the problem? Because this is hard to believe... Likewise, it seems hard to believe that the change is a problem. But could the problem be elsewhere and triggered by this code? julia > > Pavel > > -- > (english) http://www.livejournal.com/~pavelmachek > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html >