TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9748 at net/mac80211/rx.c:4321 ieee80211_rx_napi+0x177a/0x1e40 net/mac80211/rx.c:4321
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 9748 Comm: syz-executor.4 Not tainted 4.14.206-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x4b kernel/panic.c:547
 report_bug+0x208/0x249 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:ieee80211_rx_napi+0x177a/0x1e40 net/mac80211/rx.c:4321
RSP: 0018:ffff8880ba407d28 EFLAGS: 00010206
RAX: ffff8880a2574600 RBX: 0000000000000000 RCX: 1ffff11017480fb2
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff888058ba1e3c
RBP: ffff888058ba1300 R08: ffffffff8b993018 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888058ba31a0
R13: ffff88809ee433c0 R14: ffff888058ba1f00 R15: ffff888058ba18e0
 ieee80211_rx include/net/mac80211.h:4026 [inline]
 ieee80211_tasklet_handler+0x90/0xf0 net/mac80211/main.c:228
 tasklet_action+0x195/0x340 kernel/softirq.c:513
 __do_softirq+0x254/0xa1d kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x193/0x240 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
 </IRQ>
RIP: 0010:preempt_count_sub+0x63/0x130 kernel/sched/core.c:3143
RSP: 0018:ffff888054727ab8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff10
RAX: 0000000080000002 RBX: 00000000ffffffff RCX: 0000000000000000
RDX: 0000000000000004 RSI: ffff888053d19000 RDI: 0000000000000001
RBP: 0000000000000118 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffea00014bc600
R13: ffffea00014f4600 R14: ffff8880a2574600 R15: ffff888053d18000
 __kunmap_atomic include/linux/highmem.h:78 [inline]
 copy_highpage include/linux/highmem.h:247 [inline]
 copy_huge_page mm/migrate.c:652 [inline]
 migrate_page_copy+0x25e/0xb40 mm/migrate.c:721
 migrate_page+0xaa/0x100 mm/migrate.c:753
 move_to_new_page+0x4fd/0x8d0 mm/migrate.c:918
 __unmap_and_move mm/migrate.c:1096 [inline]
 unmap_and_move mm/migrate.c:1182 [inline]
 migrate_pages+0x637/0x2420 mm/migrate.c:1427
 do_mbind mm/mempolicy.c:1265 [inline]
 SYSC_mbind mm/mempolicy.c:1384 [inline]
 SyS_mbind+0x7dd/0xc20 mm/mempolicy.c:1366
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45deb9
RSP: 002b:00007ff5a5d27c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 0000000000020ec0 RCX: 000000000045deb9
RDX: 0000000000000000 RSI: 0000000000c00000 RDI: 0000000020012000
RBP: 000000000118bf78 R08: 0000000000000000 R09: 0000000100000003
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffccd12fa1f R14: 00007ff5a5d289c0 R15: 000000000118bf2c
Kernel Offset: disabled
Rebooting in 86400 seconds..