------------[ cut here ]------------
WARNING: CPU: 1 PID: 5550 at kernel/locking/lockdep.c:894 look_up_lock_class kernel/locking/lockdep.c:894 [inline]
WARNING: CPU: 1 PID: 5550 at kernel/locking/lockdep.c:894 register_lock_class+0x1fb/0x1170 kernel/locking/lockdep.c:1242
Modules linked in:
CPU: 1 PID: 5550 Comm: syz-executor.3 Not tainted 5.12.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:look_up_lock_class kernel/locking/lockdep.c:894 [inline]
RIP: 0010:register_lock_class+0x1fb/0x1170 kernel/locking/lockdep.c:1242
Code: 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 98 0c 00 00 4d 3b 67 18 74 0b 49 81 3f c0 13 38 8f 74 02 <0f> 0b 85 ed 0f 84 20 01 00 00 f6 44 24 04 01 0f 85 15 01 00 00 83
RSP: 0018:ffffc900124ffa50 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 1ffff9200249ff51 RCX: ffffffff8fe24760
RDX: 1ffff11003905caf RSI: 0000000000000000 RDI: ffff88801c82e578
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8a659820
R13: ffffffff901a9a80 R14: ffffffff8fae1f40 R15: ffff88801c82e560
FS:  00007f0097b5c700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f35423e4718 CR3: 00000000a0778000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __lock_acquire+0x106/0x54c0 kernel/locking/lockdep.c:4779
 lock_acquire kernel/locking/lockdep.c:5510 [inline]
 lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5475
 __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:359 [inline]
 lock_sock_nested+0x40/0x120 net/core/sock.c:3063
 lock_sock include/net/sock.h:1600 [inline]
 inet_autobind+0x1a/0x190 net/ipv4/af_inet.c:180
 inet_dgram_connect+0x1f5/0x2d0 net/ipv4/af_inet.c:578
 __sys_connect_file+0x155/0x1a0 net/socket.c:1837
 __sys_connect+0x161/0x190 net/socket.c:1854
 __do_sys_connect net/socket.c:1864 [inline]
 __se_sys_connect net/socket.c:1861 [inline]
 __x64_sys_connect+0x6f/0xb0 net/socket.c:1861
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x466459
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0097b5c188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 000000000056c0b0 RCX: 0000000000466459
RDX: 000000000000001c RSI: 0000000020000040 RDI: 0000000000000006
RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0b0
R13: 0000000000a9fb1f R14: 00007f0097b5c300 R15: 0000000000022000