BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 0 PID: 3703 Comm: syz-executor.1 Not tainted 5.4.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x113/0x167 lib/dump_stack.c:113
 register_lock_class.cold.69+0x1a/0x26 kernel/locking/lockdep.c:1222
 __lock_acquire+0xff/0x4ef0 kernel/locking/lockdep.c:3837
 lock_acquire+0x194/0x410 kernel/locking/lockdep.c:4487
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:343 [inline]
 netif_addr_lock_bh include/linux/netdevice.h:4066 [inline]
 __dev_mc_add+0x27/0xb0 net/core/dev_addr_lists.c:765
 dev_mc_add+0xb/0x10 net/core/dev_addr_lists.c:783
 igmp6_group_added+0x2da/0x370 net/ipv6/mcast.c:672
 __ipv6_dev_mc_inc+0x5fe/0x970 net/ipv6/mcast.c:931
 ipv6_dev_mc_inc+0xb/0x10 net/ipv6/mcast.c:938
 ipv6_add_dev+0x882/0xed0 net/ipv6/addrconf.c:456
 addrconf_notify+0x4de/0x1e60 net/ipv6/addrconf.c:3491
 notifier_call_chain+0x8a/0x160 kernel/notifier.c:95
 __raw_notifier_call_chain kernel/notifier.c:396 [inline]
 raw_notifier_call_chain+0x11/0x20 kernel/notifier.c:403
 call_netdevice_notifiers_info+0x28/0x60 net/core/dev.c:1668
 call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
 call_netdevice_notifiers net/core/dev.c:1694 [inline]
 register_netdevice+0x82e/0x1020 net/core/dev.c:8945
 br_dev_newlink+0x25/0x100 net/bridge/br_netlink.c:1315
 __rtnl_newlink+0xcb9/0x13f0 net/core/rtnetlink.c:3197
 rtnl_newlink+0x61/0x90 net/core/rtnetlink.c:3255
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:5224
 netlink_rcv_skb+0x13c/0x380 net/netlink/af_netlink.c:2477
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:5242
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x43b/0x640 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0x74b/0xc00 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:637 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:657
 ___sys_sendmsg+0x647/0x950 net/socket.c:2311
 __sys_sendmsg+0xd9/0x180 net/socket.c:2356
 __do_sys_sendmsg net/socket.c:2365 [inline]
 __se_sys_sendmsg net/socket.c:2363 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2363
 do_syscall_64+0xca/0x5d0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45af49
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fc73f21cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000006
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc73f21d6d4
R13: 00000000004ca9a0 R14: 00000000004e3d80 R15: 00000000ffffffff
kobject: 'brif' (000000009ee2fe96): kobject_add_internal: parent: 'bridge974', set: '<NULL>'
kobject: 'batman_adv' (000000009a0dfd71): kobject_add_internal: parent: 'bridge974', set: '<NULL>'