Hello, syzbot found the following issue on: HEAD commit: e5d523f1ae8f ubsan: disable UBSAN_DIV_ZERO for clang git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11e0ab1c080000 kernel config: https://syzkaller.appspot.com/x/.config?x=970ac5ffe160d24 dashboard link: https://syzkaller.appspot.com/bug?extid=82d7f0e2f7a45da561c5 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+82d7f0e2f7a45da561c5@xxxxxxxxxxxxxxxxxxxxxxxxx netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 2 PID: 3695 Comm: kworker/u16:3 Not tainted 5.19.0-rc6-syzkaller-00272-ge5d523f1ae8f #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Workqueue: netns cleanup_net Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 assign_lock_key kernel/locking/lockdep.c:979 [inline] register_lock_class+0xf30/0x1130 kernel/locking/lockdep.c:1292 __lock_acquire+0x10a/0x5660 kernel/locking/lockdep.c:4932 lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:354 [inline] ieee80211_do_stop+0xc3/0x1ff0 net/mac80211/iface.c:380 ieee80211_stop+0xc5/0x610 net/mac80211/iface.c:680 __dev_close_many+0x1b6/0x2e0 net/core/dev.c:1516 dev_close_many+0x22c/0x630 net/core/dev.c:1541 dev_close net/core/dev.c:1567 [inline] dev_close+0x16d/0x210 net/core/dev.c:1561 cfg80211_shutdown_all_interfaces+0x96/0x1f0 net/wireless/core.c:273 ieee80211_remove_interfaces+0xed/0x820 net/mac80211/iface.c:2212 ieee80211_unregister_hw+0x47/0x1f0 net/mac80211/main.c:1400 mac80211_hwsim_del_radio drivers/net/wireless/mac80211_hwsim.c:3964 [inline] hwsim_exit_net+0x50e/0xca0 drivers/net/wireless/mac80211_hwsim.c:4731 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:162 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:594 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 </TASK> device hsr_slave_0 left promiscuous mode device hsr_slave_1 left promiscuous mode batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state device veth1_macvtap left promiscuous mode device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): Released all slaves --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
