BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 PID: 32458 Comm: syz-executor.2 Not tainted 5.6.0-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+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_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x8c/0xbf kernel/locking/spinlock.c:159
 try_to_wake_up+0x9f/0x17c0 kernel/sched/core.c:2547
 swake_up_locked.part.0+0x58/0x180 kernel/sched/swait.c:30
 swake_up_locked kernel/sched/swait.c:26 [inline]
 swake_up_one+0x3b/0x60 kernel/sched/swait.c:40
 rcu_report_exp_cpu_mult+0x157/0x2d0 kernel/rcu/tree_exp.h:250
 rcu_report_exp_rdp kernel/rcu/tree_exp.h:259 [inline]
 rcu_preempt_deferred_qs_irqrestore+0x725/0xb60 kernel/rcu/tree_plugin.h:473
 rcu_preempt_deferred_qs+0x148/0x220 kernel/rcu/tree_plugin.h:577
 rcu_note_context_switch+0x226/0x18f0 kernel/rcu/tree_plugin.h:317
 __schedule+0x22a/0x1f90 kernel/sched/core.c:4018
 preempt_schedule_common+0x4a/0xc0 kernel/sched/core.c:4235
 ___preempt_schedule+0x16/0x18 arch/x86/entry/thunk_64.S:50
 __local_bh_enable_ip+0x21a/0x270 kernel/softirq.c:196
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 get_next_corpse net/netfilter/nf_conntrack_core.c:2150 [inline]
 nf_ct_iterate_cleanup+0x212/0x4b0 net/netfilter/nf_conntrack_core.c:2173
 nf_ct_iterate_cleanup_net net/netfilter/nf_conntrack_core.c:2258 [inline]
 nf_ct_iterate_cleanup_net+0x113/0x170 net/netfilter/nf_conntrack_core.c:2243
 masq_inet_event+0xf6/0x130 net/netfilter/nf_nat_masquerade.c:125
 notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
 __blocking_notifier_call_chain kernel/notifier.c:284 [inline]
 __blocking_notifier_call_chain kernel/notifier.c:271 [inline]
 blocking_notifier_call_chain kernel/notifier.c:295 [inline]
 blocking_notifier_call_chain+0x85/0xa0 kernel/notifier.c:292
 __inet_del_ifa+0x460/0xf60 net/ipv4/devinet.c:427
 inet_del_ifa net/ipv4/devinet.c:464 [inline]
 devinet_ioctl+0xefa/0x1d30 net/ipv4/devinet.c:1159
 inet_ioctl+0x1f4/0x340 net/ipv4/af_inet.c:957
 sock_do_ioctl+0xd8/0x2f0 net/socket.c:1053
 sock_ioctl+0x3ed/0x790 net/socket.c:1204
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl+0x11a/0x180 fs/ioctl.c:763
 __do_sys_ioctl fs/ioctl.c:772 [inline]
 __se_sys_ioctl fs/ioctl.c:770 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:770
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c849
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:00007f39a64d8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f39a64d96d4 RCX: 000000000045c849
RDX: 0000000020000040 RSI: 0000000000008916 RDI: 0000000000000003
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000004a4 R14: 00000000004c767f R15: 000000000076bf0c