On Tue, Jun 22, 2021 at 12:41 AM Paul E. McKenney <paulmck@xxxxxxxxxx> wrote: > > On Sat, Jun 19, 2021 at 09:54:06AM -0700, syzbot wrote: > > syzbot has bisected this issue to: > > > > commit f9006acc8dfe59e25aa75729728ac57a8d84fc32 > > Author: Florian Westphal <fw@xxxxxxxxx> > > Date: Wed Apr 21 07:51:08 2021 +0000 > > > > netfilter: arp_tables: pass table pointer via nf_hook_ops > > > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10dceae8300000 > > start commit: 0c38740c selftests/bpf: Fix ringbuf test fetching map FD > > git tree: bpf-next > > final oops: https://syzkaller.appspot.com/x/report.txt?x=12dceae8300000 > > console output: https://syzkaller.appspot.com/x/log.txt?x=14dceae8300000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=a6380da8984033f1 > > dashboard link: https://syzkaller.appspot.com/bug?extid=7b2b13f4943374609532 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1264c2d7d00000 > > > > Reported-by: syzbot+7b2b13f4943374609532@xxxxxxxxxxxxxxxxxxxxxxxxx > > Fixes: f9006acc8dfe ("netfilter: arp_tables: pass table pointer via nf_hook_ops") > > > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > > I am not seeing any mention of check_all_holdout_tasks_trace() in > the console output, but I again suggest the following two patches: > > 6a04a59eacbd ("rcu-tasks: Don't delete holdouts within trc_inspect_reader()" > dd5da0a9140e ("rcu-tasks: Don't delete holdouts within trc_wait_for_one_reader()") Let's tell syzbot about these fixes, then it will tell us if they help or not. #syz fix: rcu-tasks: Don't delete holdouts within trc_inspect_reader()
