From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Vyukov Subject: Re: INFO: task hung in vivid_stop_generating_vid_cap Date: Fri, 22 Mar 2019 09:06:41 +0100 Message-ID: References: <00000000000080601805795ada2e@google.com> <000000000000e626290584a983c0@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: syzbot , linux-can@vger.kernel.org Cc: andy@greyhouse.net, David Miller , Hans Verkuil , j.vosburgh@gmail.com, LKML , linux-media@vger.kernel.org, Mahesh Bandewar , mchehab@kernel.org, netdev , syzkaller-bugs , vfalico@gmail.com List-Id: linux-can.vger.kernel.org On Fri, Mar 22, 2019 at 9:00 AM Dmitry Vyukov wrote: > > On Fri, Mar 22, 2019 at 8:08 AM syzbot > wrote: > > > > syzbot has bisected this bug to: > > > > commit 4493b81bea24269df898339dee638d7c5cb2b2df > > Author: Mahesh Bandewar > > Date: Wed Mar 8 18:55:54 2017 +0000 > > > > bonding: initialize work-queues during creation of bond > > +linux-can > > I think I will disable CONFIG_CAN before v4.12. It causes too many > false results for v4.12..v4.11 range. It always leads to a wrong > decision for first 3 steps, then no chances of correct bisection > anymore. The same seems to show up for v4.12..v4.13: all runs: crashed: INFO: trying to register non-static key in can_notifier https://syzkaller.appspot.com/text?tag=Log&x=1555b12b200000 This was fixed by 74b7b490886852582d986a33443c2ffa50970169 right? > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=176d1617200000 > > start commit: 4493b81b bonding: initialize work-queues during creation o.. > > git tree: upstream > > final crash: https://syzkaller.appspot.com/x/report.txt?x=14ed1617200000 > > console output: https://syzkaller.appspot.com/x/log.txt?x=10ed1617200000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=62118286bb772a24 > > dashboard link: https://syzkaller.appspot.com/bug?extid=06283a66a648cd073885 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15701a33400000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=154c8e4d400000 > > > > Reported-by: syzbot+06283a66a648cd073885@syzkaller.appspotmail.com > > Fixes: 4493b81bea24 ("bonding: initialize work-queues during creation of > > bond") > > > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection