IPVS: Creating netns size=2536 id=21
------------[ cut here ]------------
WARNING: CPU: 0 PID: 8400 at kernel/locking/lockdep.c:704 look_up_lock_class kernel/locking/lockdep.c:704 [inline]
WARNING: CPU: 0 PID: 8400 at kernel/locking/lockdep.c:704 register_lock_class+0xd70/0x1470 kernel/locking/lockdep.c:726
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 8400 Comm: syz-executor0 Not tainted 4.9.109-g7cecc75 #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d697f878 ffffffff81eb3e29 ffffffff83c48960 00000000ffffffff
 0000000000000000 0000000000000000 00000000000002c0 ffff8801d697f938
 ffffffff81421925 0000000041b58ab3 ffffffff843b9a00 ffffffff81421766
Call Trace:
 [<ffffffff81eb3e29>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb3e29>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81421925>] panic+0x1bf/0x3bc kernel/panic.c:179
 [<ffffffff81421c11>] __warn.cold.9+0xc1/0x17f kernel/panic.c:542
 [<ffffffff811367cc>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff81232230>] look_up_lock_class kernel/locking/lockdep.c:704 [inline]
 [<ffffffff81232230>] register_lock_class+0xd70/0x1470 kernel/locking/lockdep.c:726
 [<ffffffff812362c9>] __lock_acquire+0x169/0x4070 kernel/locking/lockdep.c:3233
 [<ffffffff8123ac40>] lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756
 [<ffffffff839f8e2a>] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:137 [inline]
 [<ffffffff839f8e2a>] _raw_spin_lock_bh+0x3a/0x50 kernel/locking/spinlock.c:175
 [<ffffffff83024623>] spin_lock_bh include/linux/spinlock.h:307 [inline]
 [<ffffffff83024623>] lock_sock_nested+0x43/0x120 net/core/sock.c:2503
 [<ffffffff8354b9ee>] lock_sock include/net/sock.h:1404 [inline]
 [<ffffffff8354b9ee>] inet6_bind+0x2ae/0x1190 net/ipv6/af_inet6.c:315
 [<ffffffff8301768c>] SYSC_bind+0x16c/0x280 net/socket.c:1396
 [<ffffffff83019f14>] SyS_bind+0x24/0x30 net/socket.c:1382
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839f9913>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..