TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
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WARNING: CPU: 0 PID: 8014 at mm/page_alloc.c:3544 __alloc_pages_slowpath+0x1136/0x1d90 mm/page_alloc.c:3544
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 8014 Comm: syz-executor1 Not tainted 4.9.85-gf673852 #48
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801cc247630 ffffffff81d95739 ffffffff83a480c0 ffff8801cc247708
 ffffffff83aa5400 ffffffff81452f56 0000000000000009 ffff8801cc2476f8
 ffffffff8142f581 0000000041b58ab3 ffffffff8418b1f0 ffffffff8142f3c5
Call Trace:
 [<ffffffff81d95739>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d95739>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8142f581>] panic+0x1bc/0x3a8 kernel/panic.c:179
 [<ffffffff811311c4>] __warn+0x1c4/0x1e0 kernel/panic.c:542
 [<ffffffff8113142c>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff81452f56>] __alloc_pages_slowpath+0x1136/0x1d90 mm/page_alloc.c:3544
 [<ffffffff81453eeb>] __alloc_pages_nodemask+0x33b/0x6b0 mm/page_alloc.c:3851
 [<ffffffff814a76ca>] __alloc_pages include/linux/gfp.h:433 [inline]
 [<ffffffff814a76ca>] __alloc_pages_node include/linux/gfp.h:446 [inline]
 [<ffffffff814a76ca>] alloc_pages_node include/linux/gfp.h:460 [inline]
 [<ffffffff814a76ca>] kmalloc_order+0x2a/0x70 mm/slab_common.c:1043
 [<ffffffff814a772f>] kmalloc_order_trace+0x1f/0x190 mm/slab_common.c:1054
 [<ffffffff815397ed>] kmalloc_large include/linux/slab.h:422 [inline]
 [<ffffffff815397ed>] __kmalloc+0x19d/0x310 mm/slub.c:3730
 [<ffffffff8244073a>] kmalloc include/linux/slab.h:495 [inline]
 [<ffffffff8244073a>] vga_arb_write+0xda/0xda0 drivers/gpu/vga/vgaarb.c:1032
 [<ffffffff8156e6a3>] __vfs_write+0x103/0x680 fs/read_write.c:507
 [<ffffffff81570389>] vfs_write+0x189/0x530 fs/read_write.c:557
 [<ffffffff81573e49>] SYSC_write fs/read_write.c:604 [inline]
 [<ffffffff81573e49>] SyS_write+0xd9/0x1b0 fs/read_write.c:596
 [<ffffffff81006504>] do_syscall_64+0x1a4/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b5413>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..