------------[ cut here ]------------
WARNING: CPU: 1 PID: 3827 at net/ipv4/af_inet.c:167 inet_sock_destruct+0x598/0x760 net/ipv4/af_inet.c:167
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 3827 Comm: syz-executor352 Not tainted 4.9.124-g09eb2ba #31
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801db307cc0 ffffffff81eb95e9 ffffffff83c48ac0 00000000ffffffff
 0000000000000000 0000000000000001 00000000000000a7 ffff8801db307d80
 ffffffff81423eb5 0000000041b58ab3 ffffffff843bb8e8 ffffffff81423cf6
Call Trace:
 <IRQ> [   22.274622]  [<ffffffff81eb95e9>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ> [   22.274622]  [<ffffffff81eb95e9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81423eb5>] panic+0x1bf/0x3bc kernel/panic.c:179
 [<ffffffff814241a1>] __warn.cold.9+0xc1/0x17f kernel/panic.c:542
 [<ffffffff811383bc>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff8342c878>] inet_sock_destruct+0x598/0x760 net/ipv4/af_inet.c:167
 [<ffffffff836c5839>] l2tp_tunnel_destruct+0x339/0x590 net/l2tp/l2tp_core.c:1329
 [<ffffffff830281f5>] __sk_destruct+0x55/0x590 net/core/sock.c:1428
 [<ffffffff812899ee>] __rcu_reclaim kernel/rcu/rcu.h:118 [inline]
 [<ffffffff812899ee>] rcu_do_batch kernel/rcu/tree.c:2789 [inline]
 [<ffffffff812899ee>] invoke_rcu_callbacks kernel/rcu/tree.c:3053 [inline]
 [<ffffffff812899ee>] __rcu_process_callbacks kernel/rcu/tree.c:3020 [inline]
 [<ffffffff812899ee>] rcu_process_callbacks+0x8ae/0x12b0 kernel/rcu/tree.c:3037
 [<ffffffff83a085c0>] __do_softirq+0x210/0x940 kernel/softirq.c:288
 [<ffffffff8114d554>] invoke_softirq kernel/softirq.c:368 [inline]
 [<ffffffff8114d554>] irq_exit+0x114/0x150 kernel/softirq.c:409
 [<ffffffff83a071a1>] exiting_irq arch/x86/include/asm/apic.h:669 [inline]
 [<ffffffff83a071a1>] smp_apic_timer_interrupt+0x81/0xa0 arch/x86/kernel/apic/apic.c:962
 [<ffffffff83a03330>] apic_timer_interrupt+0xa0/0xb0 arch/x86/entry/entry_64.S:648
 <EOI> [   22.396585]  [<ffffffff81ed74c3>] ? memcmp+0xb3/0x160 lib/string.c:768
 [<ffffffff81f6c4ba>] find_stack lib/stackdepot.c:176 [inline]
 [<ffffffff81f6c4ba>] depot_save_stack+0x12a/0x470 lib/stackdepot.c:225
 [<ffffffff8153ead9>] save_stack+0xa9/0xd0 mm/kasan/kasan.c:511
 [<ffffffff8153ee57>] set_track mm/kasan/kasan.c:517 [inline]
 [<ffffffff8153ee57>] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:609
 [<ffffffff8153f422>] kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:547
 [<ffffffff8153ad3e>] slab_post_alloc_hook mm/slab.h:417 [inline]
 [<ffffffff8153ad3e>] slab_alloc_node mm/slub.c:2715 [inline]
 [<ffffffff8153ad3e>] slab_alloc mm/slub.c:2723 [inline]
 [<ffffffff8153ad3e>] kmem_cache_alloc+0xbe/0x290 mm/slub.c:2728
 [<ffffffff81d061a0>] kmem_cache_zalloc include/linux/slab.h:626 [inline]
 [<ffffffff81d061a0>] inode_alloc_security security/selinux/hooks.c:231 [inline]
 [<ffffffff81d061a0>] selinux_inode_alloc_security+0xb0/0x270 security/selinux/hooks.c:2825
 [<ffffffff81cf41da>] security_inode_alloc+0x9a/0xe0 security/security.c:350
 [<ffffffff815cf69a>] inode_init_always+0x47a/0x9c0 fs/inode.c:166
 [<ffffffff815d06d0>] alloc_inode+0x80/0x180 fs/inode.c:214
 [<ffffffff815d60f7>] new_inode_pseudo+0x17/0xe0 fs/inode.c:890
 [<ffffffff8301a8f1>] sock_alloc+0x41/0x280 net/socket.c:571
 [<ffffffff8302026d>] __sock_create+0x8d/0x5f0 net/socket.c:1159
 [<ffffffff83020a00>] sock_create net/socket.c:1235 [inline]
 [<ffffffff83020a00>] SYSC_socket net/socket.c:1265 [inline]
 [<ffffffff83020a00>] SyS_socket+0xf0/0x1b0 net/socket.c:1245
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff83a019d3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..