================================================================================
UBSAN: Undefined behaviour in ./include/net/red.h:272:18
shift exponent 217 is too large for 64-bit type 'long unsigned int'
CPU: 1 PID: 6476 Comm: syz-fuzzer Not tainted 4.19.150-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: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]
 red_enqueue+0x2064/0x2200 net/sched/sch_red.c:68
 __dev_xmit_skb net/core/dev.c:3494 [inline]
 __dev_queue_xmit+0x14e1/0x2ec0 net/core/dev.c:3807
 neigh_hh_output include/net/neighbour.h:491 [inline]
 neigh_output include/net/neighbour.h:499 [inline]
 ip6_finish_output2+0xe78/0x2370 net/ipv6/ip6_output.c:120
IPVS: ftp: loaded support on port[0] = 21
 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]
 ip6_local_out+0xaf/0x170 net/ipv6/output_core.c:178
 ip6_send_skb+0xb3/0x300 net/ipv6/ip6_output.c:1699
 ip6_push_pending_frames+0xdd/0x100 net/ipv6/ip6_output.c:1719
 icmpv6_push_pending_frames+0x294/0x470 net/ipv6/icmp.c:288
 icmp6_send+0x1c51/0x2310 net/ipv6/icmp.c:584
 icmpv6_send+0x11e/0x26d net/ipv6/ip6_icmp.c:43
 ip6_link_failure+0x26/0x560 net/ipv6/route.c:2297
 dst_link_failure include/net/dst.h:438 [inline]
 ndisc_error_report+0xc7/0x190 net/ipv6/ndisc.c:695
 neigh_invalidate+0x22c/0x540 net/core/neighbour.c:900
 neigh_timer_handler+0x9b0/0xc70 net/core/neighbour.c:986
 call_timer_fn+0x177/0x760 kernel/time/timer.c:1338
 expire_timers+0x243/0x500 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1703 [inline]
 run_timer_softirq+0x259/0x730 kernel/time/timer.c:1716
 __do_softirq+0x27d/0xad2 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x22d/0x270 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x15f/0x5d0 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0033:0x420068
Code: 34 c6 84 06 48 89 cf 48 c1 e9 10 48 81 e1 ff 03 00 00 44 0f b6 84 0e 00 04 21 00 48 8d 34 0e 48 8d b6 00 04 21 00 48 c1 ef 0d <48> 83 e7 07 48 89 f9 41 b9 01 00 00 00 41 d3 e1 45 84 c1 75 04 f0
RSP: 002b:000000c000049e78 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 0000000000203003 RBX: 00007f921c6d0828 RCX: 0000000000000224
RDX: 000000c00e24d440 RSI: 00007f921c9d5624 RDI: 0000000006007126
RBP: 000000c000049e98 R08: 00000000000000fe R09: 0000000000000002
R10: 000000c00002fe98 R11: 0000000000000000 R12: 000000c00e24d440
R13: 0000000000000000 R14: 0000000000aff3cc R15: 0000000000000000
================================================================================
netlink: 'syz-executor.4': attribute type 3 has an invalid length.
MTD: Attempt to mount non-MTD device "/dev/loop4"
cramfs: wrong magic
IPVS: ftp: loaded support on port[0] = 21