syzbot has found a reproducer for the following issue on:

HEAD commit: 9ab000d9ac54 Merge branch 'nfc-leaks' git tree: net console+strace: https://syzkaller.appspot.com/x/log.txt?x=178f3db5880000 kernel config: https://syzkaller.appspot.com/x/.config?x=6f4e5e9899396248 dashboard link: https://syzkaller.appspot.com/bug?extid=b04c9ffbbd2f303d00d9 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15051edd880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15b9d365880000

Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0db12aff8b37/disk-9ab000d9.raw.... vmlinux: https://storage.googleapis.com/syzbot-assets/62dc4dacf73e/vmlinux-9ab000d9.x... kernel image: https://storage.googleapis.com/syzbot-assets/0cc1ecdd9ab6/bzImage-9ab000d9.x...

IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b04c9ffbbd2f303d00d9@syzkaller.appspotmail.com

8021q: adding VLAN 0 to HW filter on device batadv968 BUG: MAX_LOCKDEP_ENTRIES too low! turning off the locking correctness validator. CPU: 1 PID: 5813 Comm: syz-executor248 Not tainted 6.1.0-rc5-syzkaller-00128-g9ab000d9ac54 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 alloc_list_entry.cold+0x11/0x18 kernel/locking/lockdep.c:1402 add_lock_to_list kernel/locking/lockdep.c:1423 [inline] check_prev_add kernel/locking/lockdep.c:3167 [inline] check_prevs_add kernel/locking/lockdep.c:3216 [inline] validate_chain kernel/locking/lockdep.c:3831 [inline] __lock_acquire+0x3626/0x56d0 kernel/locking/lockdep.c:5055 lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:355 [inline] batadv_tt_local_event+0x1f6/0x7e0 net/batman-adv/translation-table.c:482 batadv_tt_local_add+0x638/0x1f50 net/batman-adv/translation-table.c:758 batadv_softif_create_vlan+0x2ed/0x530 net/batman-adv/soft-interface.c:586 batadv_interface_add_vid+0xd7/0x110 net/batman-adv/soft-interface.c:646 vlan_add_rx_filter_info+0x149/0x1d0 net/8021q/vlan_core.c:211 __vlan_vid_add net/8021q/vlan_core.c:306 [inline] vlan_vid_add+0x3f6/0x7f0 net/8021q/vlan_core.c:336 vlan_device_event.cold+0x28/0x2d net/8021q/vlan.c:385 notifier_call_chain+0xb5/0x200 kernel/notifier.c:87 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1945 call_netdevice_notifiers_extack net/core/dev.c:1983 [inline] call_netdevice_notifiers net/core/dev.c:1997 [inline] dev_open net/core/dev.c:1473 [inline] dev_open+0x136/0x150 net/core/dev.c:1461 team_port_add drivers/net/team/team.c:1215 [inline] team_add_slave+0xa03/0x1b90 drivers/net/team/team.c:1984 do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2578 rtnl_newlink_create net/core/rtnetlink.c:3381 [inline] __rtnl_newlink+0x13ac/0x17e0 net/core/rtnetlink.c:3581 rtnl_newlink+0x68/0xa0 net/core/rtnetlink.c:3594 rtnetlink_rcv_msg+0x43e/0xca0 net/core/rtnetlink.c:6091 netlink_rcv_skb+0x157/0x430 net/netlink/af_netlink.c:2540 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2565 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2d5511cab9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffddb541428 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000003d335 RCX: 00007f2d5511cab9 RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007ffddb5415c8 R09: 00007ffddb5415c8 R10: 00007ffddb5415c8 R11: 0000000000000246 R12: 00007ffddb54143c R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 </TASK> team968: Port device batadv968 added