================================================================================
UBSAN: Undefined behaviour in ./include/net/red.h:272:18
shift exponent 240 is too large for 64-bit type 'long unsigned int'
CPU: 0 PID: 9633 Comm: syz-executor.0 Not tainted 4.19.152-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x22c/0x33e lib/dump_stack.c:118
 ubsan_epilogue+0xe/0x3a lib/ubsan.c:161
 __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422
 red_calc_qavg_from_idle_time include/net/red.h:272 [inline]
 red_calc_qavg include/net/red.h:313 [inline]
 choke_enqueue+0x2a7e/0x2cc0 net/sched/sch_choke.c:231
 __dev_xmit_skb net/core/dev.c:3494 [inline]
 __dev_queue_xmit+0x14e1/0x2ec0 net/core/dev.c:3807
 neigh_resolve_output+0x55a/0x950 net/core/neighbour.c:1374
 neigh_output include/net/neighbour.h:501 [inline]
 ip6_finish_output2+0x1184/0x2370 net/ipv6/ip6_output.c:120
 ip6_finish_output+0x610/0xcc0 net/ipv6/ip6_output.c:154
 NF_HOOK_COND include/linux/netfilter.h:278 [inline]
 ip6_output+0x205/0x7c0 net/ipv6/ip6_output.c:171
 dst_output include/net/dst.h:455 [inline]
 NF_HOOK include/linux/netfilter.h:289 [inline]
 ip6_xmit+0xe46/0x2110 net/ipv6/ip6_output.c:275
 inet6_csk_xmit+0x350/0x661 net/ipv6/inet6_connection_sock.c:139
 __tcp_transmit_skb+0x1c72/0x36c0 net/ipv4/tcp_output.c:1148
 tcp_transmit_skb net/ipv4/tcp_output.c:1164 [inline]
 tcp_send_syn_data net/ipv4/tcp_output.c:3486 [inline]
 tcp_connect+0x121e/0x2610 net/ipv4/tcp_output.c:3525
 tcp_v6_connect+0x1c36/0x2290 net/ipv6/tcp_ipv6.c:321
 __inet_stream_connect+0x836/0xe50 net/ipv4/af_inet.c:655
 tcp_sendmsg_fastopen net/ipv4/tcp.c:1185 [inline]
 tcp_sendmsg_locked+0x22cb/0x2fe0 net/ipv4/tcp.c:1232
 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1460
 inet_sendmsg+0x174/0x640 net/ipv4/af_inet.c:798
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xc7/0x130 net/socket.c:632
 __sys_sendto+0x21a/0x320 net/socket.c:1787
 __do_sys_sendto net/socket.c:1799 [inline]
 __se_sys_sendto net/socket.c:1795 [inline]
 __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1795
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45de59
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f03227c0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000002e8c0 RCX: 000000000045de59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000118bf78 R08: 00000000200001c0 R09: 000000000000001c
R10: 0000000020004000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007fff2e68305f R14: 00007f03227c19c0 R15: 000000000118bf2c
================================================================================
nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based  firewall rule not found. Use the iptables CT target to attach helpers instead.
netlink: 244 bytes leftover after parsing attributes in process `syz-executor.2'.
netlink: 928 bytes leftover after parsing attributes in process `syz-executor.3'.