WARNING: CPU: 0 PID: 16367 at kernel/locking/lockdep.c:746 arch_local_save_flags arch/x86/include/asm/paravirt.h:762 [inline]
WARNING: CPU: 0 PID: 16367 at kernel/locking/lockdep.c:746 arch_local_save_flags arch/x86/include/asm/paravirt.h:760 [inline]
WARNING: CPU: 0 PID: 16367 at kernel/locking/lockdep.c:746 look_up_lock_class kernel/locking/lockdep.c:737 [inline]
WARNING: CPU: 0 PID: 16367 at kernel/locking/lockdep.c:746 register_lock_class+0xe10/0x1860 kernel/locking/lockdep.c:1090
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 16367 Comm: syz-executor.2 Not tainted 5.1.0-rc7+ #165
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+0x2cb/0x65c kernel/panic.c:214
 __warn.cold+0x20/0x45 kernel/panic.c:571
 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:973
RIP: 0010:look_up_lock_class kernel/locking/lockdep.c:746 [inline]
RIP: 0010:register_lock_class+0xe10/0x1860 kernel/locking/lockdep.c:1090
Code: 00 48 89 da 4d 8b 76 c0 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 23 07 00 00 4c 89 33 e9 e3 f4 ff ff 0f 0b <0f> 0b e9 ea f3 ff ff 44 89 e0 4c 8b 95 50 ff ff ff 83 c0 01 4c 8b
RSP: 0018:ffff88805a257a58 EFLAGS: 00010083
RAX: dffffc0000000000 RBX: ffff8880627798e0 RCX: 0000000000000000
RDX: 1ffff1100c4ef31f RSI: 0000000000000000 RDI: ffff8880627798f8
RBP: ffff88805a257b20 R08: 1ffff1100b44af53 R09: ffffffff8a5d4a20
R10: ffffffff8a0be1e0 R11: 0000000000000000 R12: ffffffff8a12a280
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff87fbcf20
 __lock_acquire+0xf9/0x3fb0 kernel/locking/lockdep.c:3582
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4211
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x33/0x50 kernel/locking/spinlock.c:168
 spin_lock_bh include/linux/spinlock.h:334 [inline]
 lock_sock_nested+0x41/0x120 net/core/sock.c:2917
 lock_sock include/net/sock.h:1525 [inline]
 udpv6_pre_connect net/ipv6/udp.c:1063 [inline]
 udpv6_pre_connect+0xc4/0x170 net/ipv6/udp.c:1045
 inet_dgram_connect+0x1cd/0x2e0 net/ipv4/af_inet.c:568
 __sys_connect+0x266/0x330 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+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458da9
Code: ad b8 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 b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f916259cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458da9
RDX: 000000000000001c RSI: 0000000020000040 RDI: 0000000000000004
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f916259d6d4
R13: 00000000004bf1f1 R14: 00000000004d02c0 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..