------------[ cut here ]------------
WARNING: CPU: 1 PID: 3328 at mm/page_alloc.c:3550 __alloc_pages_slowpath+0x1136/0x1d90 mm/page_alloc.c:3550
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 3328 Comm: syzkaller012819 Not tainted 4.9.78-g29eadc4 #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c8d66ac0 ffffffff81d943a9 ffffffff83a47c40 ffff8801c8d66b98
 ffffffff83aa4e00 ffffffff81452df6 0000000000000009 ffff8801c8d66b88
 ffffffff8142f451 0000000041b58ab3 ffffffff8418ac30 ffffffff8142f295
Call Trace:
 [<ffffffff81d943a9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d943a9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8142f451>] panic+0x1bc/0x3a8 kernel/panic.c:179
 [<ffffffff81131164>] __warn+0x1c4/0x1e0 kernel/panic.c:542
 [<ffffffff811313cc>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff81452df6>] __alloc_pages_slowpath+0x1136/0x1d90 mm/page_alloc.c:3550
 [<ffffffff81453d8b>] __alloc_pages_nodemask+0x33b/0x6b0 mm/page_alloc.c:3857
 [<ffffffff814a715a>] __alloc_pages include/linux/gfp.h:433 [inline]
 [<ffffffff814a715a>] __alloc_pages_node include/linux/gfp.h:446 [inline]
 [<ffffffff814a715a>] alloc_pages_node include/linux/gfp.h:460 [inline]
 [<ffffffff814a715a>] kmalloc_order+0x2a/0x70 mm/slab_common.c:1043
 [<ffffffff814a71bf>] kmalloc_order_trace+0x1f/0x190 mm/slab_common.c:1054
 [<ffffffff8153933d>] kmalloc_large include/linux/slab.h:422 [inline]
 [<ffffffff8153933d>] __kmalloc+0x19d/0x310 mm/slub.c:3730
 [<ffffffff827172b8>] kmalloc_array include/linux/slab.h:582 [inline]
 [<ffffffff827172b8>] kcalloc include/linux/slab.h:593 [inline]
 [<ffffffff827172b8>] __ptr_ring_init_queue_alloc include/linux/ptr_ring.h:354 [inline]
 [<ffffffff827172b8>] ptr_ring_resize_multiple include/linux/ptr_ring.h:443 [inline]
 [<ffffffff827172b8>] skb_array_resize_multiple include/linux/skb_array.h:169 [inline]
 [<ffffffff827172b8>] tun_queue_resize drivers/net/tun.c:2510 [inline]
 [<ffffffff827172b8>] tun_device_event+0x398/0xa50 drivers/net/tun.c:2528
 [<ffffffff8119efe0>] notifier_call_chain+0x90/0x1a0 kernel/notifier.c:93
 [<ffffffff8119f16d>] __raw_notifier_call_chain kernel/notifier.c:394 [inline]
 [<ffffffff8119f16d>] raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401
 [<ffffffff82f29dc1>] call_netdevice_notifiers_info+0x51/0x90 net/core/dev.c:1647
 [<ffffffff82f29e70>] call_netdevice_notifiers+0x70/0xa0 net/core/dev.c:1663
 [<ffffffff82f7c596>] do_setlink+0xba6/0x2f80 net/core/rtnetlink.c:2048
 [<ffffffff82f8953d>] rtnl_newlink+0xd6d/0x1550 net/core/rtnetlink.c:2557
 [<ffffffff82f8a1e3>] rtnetlink_rcv_msg+0x4c3/0x640 net/core/rtnetlink.c:4059
 [<ffffffff8309513e>] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2351
 [<ffffffff82f7af7a>] rtnetlink_rcv+0x2a/0x40 net/core/rtnetlink.c:4065
 [<ffffffff83093cc1>] netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline]
 [<ffffffff83093cc1>] netlink_unicast+0x511/0x750 net/netlink/af_netlink.c:1301
 [<ffffffff830947e8>] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1847
 [<ffffffff82ed7baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed7baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed97a1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82edb7d6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82edb8bd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82edb8bd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff838b2c6e>] entry_SYSCALL_64_fastpath+0x29/0xe8
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..