WARNING: CPU: 0 PID: 28251 at kernel/locking/lockdep.c:772 look_up_lock_class /kernel/locking/lockdep.c:772 [inline]
WARNING: CPU: 0 PID: 28251 at kernel/locking/lockdep.c:772 register_lock_class+0x206/0x1850 /kernel/locking/lockdep.c:1117
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 28251 Comm: syz-executor.3 Not tainted 5.2.0+ #67
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+0x172/0x1f0 /lib/dump_stack.c:113
 panic+0x2dc/0x755 /kernel/panic.c:219
 __warn.cold+0x20/0x4c /kernel/panic.c:576
 report_bug+0x263/0x2b0 /lib/bug.c:186
 fixup_bug /arch/x86/kernel/traps.c:179 [inline]
 fixup_bug /arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 /arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 /arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 /arch/x86/entry/entry_64.S:1008
RIP: 0010:look_up_lock_class /kernel/locking/lockdep.c:772 [inline]
RIP: 0010:register_lock_class+0x206/0x1850 /kernel/locking/lockdep.c:1117
Code: fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 aa 10 00 00 4c 3b 7b 18 44 8b 35 c5 b4 31 09 74 0b 48 81 3b 60 56 e4 89 74 02 <0f> 0b 45 85 ed 0f 84 71 03 00 00 f6 85 70 ff ff ff 01 0f 85 64 03
RSP: 0018:ffff88809a81fa78 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: ffff888069d8d820 RCX: 0000000000000000
RDX: 1ffff1100d3b1b07 RSI: 0000000000000000 RDI: ffff888069d8d838
RBP: ffff88809a81fb40 R08: 1ffff11013503f57 R09: ffffffff8a8a9180
R10: ffffffff8a532830 R11: 0000000000000000 R12: ffffffff8a573030
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8825e660
 __lock_acquire+0xf4/0x4c30 /kernel/locking/lockdep.c:3762
 lock_acquire+0x190/0x410 /kernel/locking/lockdep.c:4413
 __raw_spin_lock_bh /./include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x33/0x50 /kernel/locking/spinlock.c:175
 spin_lock_bh /./include/linux/spinlock.h:343 [inline]
 lock_sock_nested+0x41/0x120 /net/core/sock.c:2917
 lock_sock /./include/net/sock.h:1522 [inline]
 udpv6_pre_connect /net/ipv6/udp.c:1051 [inline]
 udpv6_pre_connect+0xc4/0x170 /net/ipv6/udp.c:1033
 inet_dgram_connect+0x1c4/0x2d0 /net/ipv4/af_inet.c:564
 __sys_connect+0x264/0x330 /net/socket.c:1828
 __do_sys_connect /net/socket.c:1839 [inline]
 __se_sys_connect /net/socket.c:1836 [inline]
 __x64_sys_connect+0x73/0xb0 /net/socket.c:1836
 do_syscall_64+0xfd/0x6a0 /arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459819
Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f18f97a6c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459819
RDX: 000000000000001c RSI: 0000000020000080 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f18f97a76d4
R13: 00000000004bfd71 R14: 00000000004d1918 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..