TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
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UBSAN: shift-out-of-bounds in ./include/net/red.h:312:18
shift exponent 109 is too large for 64-bit type 'long unsigned int'
CPU: 1 PID: 20935 Comm: syz-executor.2 Not tainted 5.12.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 lib/dump_stack.c:120
 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148
 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:327
 red_calc_qavg_from_idle_time include/net/red.h:312 [inline]
 red_calc_qavg include/net/red.h:353 [inline]
 red_enqueue.cold+0x64/0x452 net/sched/sch_red.c:77
 __dev_xmit_skb net/core/dev.c:3837 [inline]
 __dev_queue_xmit+0x1943/0x2e00 net/core/dev.c:4150
 neigh_resolve_output net/core/neighbour.c:1491 [inline]
 neigh_resolve_output+0x50e/0x820 net/core/neighbour.c:1471
 neigh_output include/net/neighbour.h:510 [inline]
 ip6_finish_output2+0x6ee/0x1700 net/ipv6/ip6_output.c:117
 __ip6_finish_output net/ipv6/ip6_output.c:182 [inline]
 __ip6_finish_output+0x4c1/0xe10 net/ipv6/ip6_output.c:161
 ip6_finish_output+0x35/0x200 net/ipv6/ip6_output.c:192
 NF_HOOK_COND include/linux/netfilter.h:290 [inline]
 ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:215
 dst_output include/net/dst.h:448 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ndisc_send_skb+0xa99/0x1750 net/ipv6/ndisc.c:508
 ndisc_send_ns+0x3a9/0x840 net/ipv6/ndisc.c:650
 ndisc_solicit+0x2cd/0x4f0 net/ipv6/ndisc.c:742
 neigh_probe+0xc2/0x110 net/core/neighbour.c:1010
 __neigh_event_send+0x37d/0x14c0 net/core/neighbour.c:1171
 neigh_event_send include/net/neighbour.h:444 [inline]
 neigh_resolve_output+0x538/0x820 net/core/neighbour.c:1475
 neigh_output include/net/neighbour.h:510 [inline]
 ip6_finish_output2+0x6ee/0x1700 net/ipv6/ip6_output.c:117
 __ip6_finish_output net/ipv6/ip6_output.c:182 [inline]
 __ip6_finish_output+0x4c1/0xe10 net/ipv6/ip6_output.c:161
 ip6_finish_output+0x35/0x200 net/ipv6/ip6_output.c:192
 NF_HOOK_COND include/linux/netfilter.h:290 [inline]
 ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:215
 dst_output include/net/dst.h:448 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 NF_HOOK include/linux/netfilter.h:295 [inline]
 ip6_xmit+0x127e/0x1eb0 net/ipv6/ip6_output.c:320
 tcp_v6_send_synack+0x655/0xf20 net/ipv6/tcp_ipv6.c:543
 tcp_conn_request+0x18c9/0x30b0 net/ipv4/tcp_input.c:6879
 tcp_v6_conn_request net/ipv6/tcp_ipv6.c:1178 [inline]
 tcp_v6_conn_request+0x100/0x2b0 net/ipv6/tcp_ipv6.c:1170
 tcp_rcv_state_process+0xa16/0x4cb0 net/ipv4/tcp_input.c:6343
 tcp_v6_do_rcv+0x7ad/0x12b0 net/ipv6/tcp_ipv6.c:1510
 tcp_v6_rcv+0x2f72/0x34a0 net/ipv6/tcp_ipv6.c:1706
 ip6_protocol_deliver_rcu+0x2e8/0x1680 net/ipv6/ip6_input.c:432
 ip6_input_finish+0x7f/0x160 net/ipv6/ip6_input.c:473
 NF_HOOK include/linux/netfilter.h:301 [inline]
 NF_HOOK include/linux/netfilter.h:295 [inline]
 ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:482
 dst_input include/net/dst.h:458 [inline]
 ip6_rcv_finish net/ipv6/ip6_input.c:76 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 NF_HOOK include/linux/netfilter.h:295 [inline]
 ipv6_rcv+0x28e/0x3c0 net/ipv6/ip6_input.c:307
 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5365
 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5479
 netif_receive_skb_internal net/core/dev.c:5584 [inline]
 netif_receive_skb+0x157/0x8e0 net/core/dev.c:5643
 tun_rx_batched.isra.0+0x460/0x720 drivers/net/tun.c:1449
 tun_get_user+0x23df/0x3690 drivers/net/tun.c:1896
 tun_chr_write_iter+0xe1/0x1d0 drivers/net/tun.c:1926
 call_write_iter include/linux/fs.h:1977 [inline]
 new_sync_write+0x426/0x650 fs/read_write.c:518
 vfs_write+0x796/0xa30 fs/read_write.c:605
 ksys_write+0x12d/0x250 fs/read_write.c:658
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x41914f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48
RSP: 002b:00007f1bc973c150 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 000000000041914f
RDX: 000000000000004a RSI: 0000000020000080 RDI: 00000000000000f0
RBP: 00000000004bfa67 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000056bf60
R13: 00007ffc80d12cff R14: 00007f1bc973c300 R15: 0000000000022000
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