BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 PID: 2969 Comm: kworker/0:44 Not tainted 5.6.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 add_chain_cache kernel/locking/lockdep.c:2840 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:2914 [inline]
 validate_chain kernel/locking/lockdep.c:2935 [inline]
 __lock_acquire.cold+0x263/0x288 kernel/locking/lockdep.c:3954
 lock_acquire+0x197/0x420 kernel/locking/lockdep.c:4484
 __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:343 [inline]
 netif_addr_lock_bh include/linux/netdevice.h:4172 [inline]
 __dev_mc_add+0x28/0xd0 net/core/dev_addr_lists.c:765
 igmp6_group_added+0x375/0x420 net/ipv6/mcast.c:672
 __ipv6_dev_mc_inc+0x814/0xc90 net/ipv6/mcast.c:931
 addrconf_join_solict.part.0+0xb5/0xf0 net/ipv6/addrconf.c:2153
 addrconf_join_solict net/ipv6/addrconf.c:3945 [inline]
 addrconf_dad_begin net/ipv6/addrconf.c:3945 [inline]
 addrconf_dad_work+0x1b9/0x1260 net/ipv6/addrconf.c:4072
 process_one_work+0x94b/0x1690 kernel/workqueue.c:2266
 worker_thread+0x96/0xe20 kernel/workqueue.c:2412
 kthread+0x357/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352