MTU too low for tipc bearer
------------[ cut here ]------------
WARNING: CPU: 1 PID: 11149 at kernel/locking/lockdep.c:840 look_up_lock_class kernel/locking/lockdep.c:840 [inline]
WARNING: CPU: 1 PID: 11149 at kernel/locking/lockdep.c:840 register_lock_class+0x206/0x1850 kernel/locking/lockdep.c:1185
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 11149 Comm: syz-executor.5 Not tainted 5.4.0-rc3+ #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+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 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+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:look_up_lock_class kernel/locking/lockdep.c:840 [inline]
RIP: 0010:register_lock_class+0x206/0x1850 kernel/locking/lockdep.c:1185
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 95 c7 55 09 74 0b 48 81 3b e0 e5 06 8a 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:ffff888063b8f5b0 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffff8880a3c0c8a0 RCX: 0000000000000000
RDX: 1ffff11014781917 RSI: 0000000000000000 RDI: ffff8880a3c0c8b8
RBP: ffff888063b8f678 R08: 1ffff1100c771ebe R09: ffffffff8aaf2120
R10: ffffffff8a77f500 R11: 0000000000000000 R12: ffffffff8a7bc6b0
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff88474ac0
 __lock_acquire+0xf4/0x4a00 kernel/locking/lockdep.c:3837
 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4487
 __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:2936
 lock_sock include/net/sock.h:1526 [inline]
 do_ipv6_setsockopt.isra.0+0x27a/0x4120 net/ipv6/ipv6_sockglue.c:165
 ipv6_setsockopt+0xf6/0x170 net/ipv6/ipv6_sockglue.c:944
 udpv6_setsockopt+0x68/0xb0 net/ipv6/udp.c:1565
 sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3149
 __sys_setsockopt+0x261/0x4c0 net/socket.c:2084
 __do_sys_setsockopt net/socket.c:2100 [inline]
 __se_sys_setsockopt net/socket.c:2097 [inline]
 __x64_sys_setsockopt+0xbe/0x150 net/socket.c:2097
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459f49
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:00007f99032adc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459f49
RDX: 0000000000000023 RSI: 0000000000000029 RDI: 0000000000000013
RBP: 000000000075c118 R08: 00000000000000e8 R09: 0000000000000000
R10: 00000000200001c0 R11: 0000000000000246 R12: 00007f99032ae6d4
R13: 00000000004d00d8 R14: 00000000004df130 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..