================================================================================
UBSAN: shift-out-of-bounds in ./include/net/red.h:312:18
shift exponent 248 is too large for 64-bit type 'long unsigned int'
CPU: 1 PID: 11293 Comm: syz-executor.4 Not tainted 5.12.0-rc1-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+0xfa/0x151 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]
 choke_enqueue.cold+0x18/0x3dd net/sched/sch_choke.c:221
 __dev_xmit_skb net/core/dev.c:3837 [inline]
 __dev_queue_xmit+0x1943/0x2e00 net/core/dev.c:4150
 neigh_hh_output include/net/neighbour.h:499 [inline]
 neigh_output include/net/neighbour.h:508 [inline]
 ip_finish_output2+0xeb0/0x21a0 net/ipv4/ip_output.c:230
 ip_do_fragment+0x6f2/0x1450 net/ipv4/ip_output.c:914
 ip_fragment.constprop.0+0x174/0x240 net/ipv4/ip_output.c:582
 __ip_finish_output net/ipv4/ip_output.c:306 [inline]
 __ip_finish_output+0x2de/0x640 net/ipv4/ip_output.c:290
 ip_finish_output+0x35/0x200 net/ipv4/ip_output.c:318
 NF_HOOK_COND include/linux/netfilter.h:290 [inline]
 ip_output+0x196/0x310 net/ipv4/ip_output.c:432
 dst_output include/net/dst.h:448 [inline]
 ip_local_out+0xaf/0x1a0 net/ipv4/ip_output.c:126
 iptunnel_xmit+0x5a3/0x9c0 net/ipv4/ip_tunnel_core.c:82
 ip_tunnel_xmit+0x1116/0x2b00 net/ipv4/ip_tunnel.c:805
 sit_tunnel_xmit__ net/ipv6/sit.c:1060 [inline]
 sit_tunnel_xmit+0x4fd/0x2a80 net/ipv6/sit.c:1076
 __netdev_start_xmit include/linux/netdevice.h:4825 [inline]
 netdev_start_xmit include/linux/netdevice.h:4839 [inline]
 xmit_one net/core/dev.c:3593 [inline]
 dev_hard_start_xmit+0x1eb/0x920 net/core/dev.c:3609
 __dev_queue_xmit+0x2121/0x2e00 net/core/dev.c:4182
 neigh_connected_output+0x37a/0x4c0 net/core/neighbour.c:1520
 neigh_output include/net/neighbour.h:510 [inline]
 ip_finish_output2+0x83d/0x21a0 net/ipv4/ip_output.c:230
 ip_do_fragment+0x110a/0x1450 net/ipv4/ip_output.c:858
 ip_fragment.constprop.0+0x174/0x240 net/ipv4/ip_output.c:582
 __ip_finish_output net/ipv4/ip_output.c:306 [inline]
 __ip_finish_output+0x2de/0x640 net/ipv4/ip_output.c:290
 ip_finish_output+0x35/0x200 net/ipv4/ip_output.c:318
 NF_HOOK_COND include/linux/netfilter.h:290 [inline]
 ip_output+0x196/0x310 net/ipv4/ip_output.c:432
 dst_output include/net/dst.h:448 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb net/ipv4/ip_output.c:1568 [inline]
 ip_push_pending_frames+0x125/0x2b0 net/ipv4/ip_output.c:1588
 raw_sendmsg+0x130e/0x2d40 net/ipv4/raw.c:673
 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:821
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 __sys_sendto+0x21c/0x320 net/socket.c:1977
 __do_sys_sendto net/socket.c:1989 [inline]
 __se_sys_sendto net/socket.c:1985 [inline]
 __ia32_sys_sendto+0xdb/0x1b0 net/socket.c:1985
 do_syscall_32_irqs_on arch/x86/entry/common.c:77 [inline]
 __do_fast_syscall_32+0x56/0x80 arch/x86/entry/common.c:139
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:164
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f00549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f54fa5fc EFLAGS: 00000296 ORIG_RAX: 0000000000000171
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000020000080
RDX: 000000000000fe7a RSI: 0000000000000000 RDI: 00000000200001c0
RBP: 0000000000000010 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
================================================================================