BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 2 PID: 13733 Comm: syz-executor820 Not tainted 5.7.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 register_lock_class.cold+0x11/0x19 kernel/locking/lockdep.c:1238
 __lock_acquire+0xff/0x48a0 kernel/locking/lockdep.c:4259
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4959
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:358 [inline]
 netif_addr_lock_bh include/linux/netdevice.h:4244 [inline]
 __dev_mc_add+0x28/0xd0 net/core/dev_addr_lists.c:765
 igmp6_group_added+0x375/0x420 net/ipv6/mcast.c:669
 __ipv6_dev_mc_inc+0x819/0xca0 net/ipv6/mcast.c:928
 ipv6_add_dev net/ipv6/addrconf.c:456 [inline]
 ipv6_add_dev+0x99d/0x1090 net/ipv6/addrconf.c:364
 addrconf_notify+0x89c/0x2250 net/ipv6/addrconf.c:3462
 notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
 call_netdevice_notifiers_info net/core/dev.c:2016 [inline]
 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2001
 call_netdevice_notifiers_extack net/core/dev.c:2028 [inline]
 call_netdevice_notifiers net/core/dev.c:2042 [inline]
 register_netdevice+0xd70/0x10b0 net/core/dev.c:9541
 veth_newlink+0x41e/0xa10 drivers/net/veth.c:1366
 __rtnl_newlink+0xf16/0x1590 net/core/rtnetlink.c:3340
 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3398
 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5461
 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2469
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 ____sys_sendmsg+0x6e6/0x810 net/socket.c:2352
 ___sys_sendmsg+0x100/0x170 net/socket.c:2406
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x434d89
Code: e8 2c e9 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b d1 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffd0bbea4e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000434d89
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000044006 R14: 0000000000000000 R15: 0000000000000000