On Sun, Apr 19, 2020 at 1:44 AM <xiangxia.m....@gmail.com> wrote: > > From: Tonghao Zhang <xiangxia.m....@gmail.com> > > syzbot wrote: > | ============================= > | WARNING: suspicious RCU usage > | 5.7.0-rc1+ #45 Not tainted > | ----------------------------- > | net/openvswitch/conntrack.c:1898 RCU-list traversed in non-reader section!! > | > | other info that might help us debug this: > | rcu_scheduler_active = 2, debug_locks = 1 > | ... > | > | stack backtrace: > | Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS > rel-1.12.0-0-ga698c8995f-prebuilt.qemu.org 04/01/2014 > | Workqueue: netns cleanup_net > | Call Trace: > | ... > | ovs_ct_exit > | ovs_exit_net > | ops_exit_list.isra.7 > | cleanup_net > | process_one_work > | worker_thread > > To avoid that warning, invoke the ovs_ct_exit under ovs_lock and add > lockdep_ovsl_is_held as optional lockdep expression. > > Link: https://lore.kernel.org/lkml/000000000000e642a905a0cbe...@google.com > Fixes: 11efd5cb04a1 ("openvswitch: Support conntrack zone limit") > Cc: Pravin B Shelar <pshe...@ovn.org> > Cc: Yi-Hung Wei <yihung....@gmail.com> > Reported-by: syzbot+7ef50afd3a211f879...@syzkaller.appspotmail.com > Signed-off-by: Tonghao Zhang <xiangxia.m....@gmail.com>
Acked-by: Pravin B Shelar <pshe...@ovn.org> Thanks. _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
