------------[ cut here ]------------
WARNING: CPU: 1 PID: 31009 at kernel/locking/lockdep.c:872 look_up_lock_class kernel/locking/lockdep.c:872 [inline]
WARNING: CPU: 1 PID: 31009 at kernel/locking/lockdep.c:872 register_lock_class+0x1fd/0x1760 kernel/locking/lockdep.c:1220
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 31009 Comm: syz-executor.1 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
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x27b/0x2f0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:175 [inline]
 fixup_bug arch/x86/kernel/traps.c:170 [inline]
 do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:267
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:look_up_lock_class kernel/locking/lockdep.c:872 [inline]
RIP: 0010:register_lock_class+0x1fd/0x1760 kernel/locking/lockdep.c:1220
Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 66 10 00 00 4c 3b 7d 18 74 0c 48 81 7d 00 80 48 bc 8b 74 02 <0f> 0b 45 85 ed 0f 84 1b 04 00 00 41 83 e6 01 0f 85 11 04 00 00 41
RSP: 0018:ffffc900018079d0 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: ffffffff8c6584e0 RCX: 1ffffffff185abd2
RDX: 1ffff11013de382f RSI: 0000000000000000 RDI: ffff88809ef1c178
RBP: ffff88809ef1c160 R08: ffffffff8c318698 R09: 0000000000000000
R10: ffffffff8a88e987 R11: 0000000000000000 R12: 1ffff92000300f42
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff88da1880
 __lock_acquire+0x104/0x4e00 kernel/locking/lockdep.c:4223
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4923
 __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]
 lock_sock_nested+0x3b/0x110 net/core/sock.c:2959
 lock_sock include/net/sock.h:1574 [inline]
 inet_autobind+0x1a/0x190 net/ipv4/af_inet.c:179
 inet_dgram_connect+0x245/0x2d0 net/ipv4/af_inet.c:569
 __sys_connect_file+0x155/0x1a0 net/socket.c:1859
 __sys_connect+0x160/0x190 net/socket.c:1876
 __do_sys_connect net/socket.c:1887 [inline]
 __se_sys_connect net/socket.c:1884 [inline]
 __x64_sys_connect+0x6f/0xb0 net/socket.c:1884
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45c889
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:00007f89dea69c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f89dea6a6d4 RCX: 000000000045c889
RDX: 0000000000000010 RSI: 0000000020000300 RDI: 0000000000000004
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000081 R14: 00000000004c31da R15: 000000000076bf0c
Kernel Offset: disabled
Rebooting in 86400 seconds..