From mboxrd@z Thu Jan 1 00:00:00 1970 From: syzbot Subject: Re: [syzbot] possible deadlock in throtl_pending_timer_fn Date: Fri, 29 Jul 2022 20:25:08 -0700 Message-ID: <0000000000004e96a405e4fd5051@google.com> References: <000000000000921fd405db62096a@google.com> Mime-Version: 1.0 Return-path: In-Reply-To: <000000000000921fd405db62096a-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org> List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, hdanton-k+cT0dCbe1g@public.gmane.org, linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, ming.lei-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, syzkaller-bugs-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org, tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org syzbot has bisected this issue to: commit 0a9a25ca78437b39e691bcc3dc8240455b803d8d Author: Ming Lei Date: Fri Mar 18 13:01:43 2022 +0000 block: let blkcg_gq grab request queue's refcnt bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16c3cfc2080000 start commit: cb71b93c2dc3 Add linux-next specific files for 20220628 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=15c3cfc2080000 console output: https://syzkaller.appspot.com/x/log.txt?x=11c3cfc2080000 kernel config: https://syzkaller.appspot.com/x/.config?x=badbc1adb2d582eb dashboard link: https://syzkaller.appspot.com/bug?extid=934ebb67352c8a490bf3 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17713dee080000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15d24952080000 Reported-by: syzbot+934ebb67352c8a490bf3-Pl5Pbv+GP7P466ipTTIvnc23WoclnBCfAL8bYrjMMd8@public.gmane.org Fixes: 0a9a25ca7843 ("block: let blkcg_gq grab request queue's refcnt") For information about bisection process see: https://goo.gl/tpsmEJ#bisection