================================================================================
UBSAN: Undefined behaviour in ./include/net/red.h:272:18
shift exponent 75 is too large for 64-bit type 'long unsigned int'
CPU: 1 PID: 28078 Comm: syz-executor.3 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_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
 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
 sctp_v6_xmit+0x38e/0x720 net/sctp/ipv6.c:229
 sctp_packet_transmit+0x1c3c/0x3210 net/sctp/output.c:641
 sctp_packet_singleton net/sctp/outqueue.c:792 [inline]
 sctp_outq_flush_ctrl.constprop.0+0x6d3/0xc50 net/sctp/outqueue.c:923
 sctp_outq_flush net/sctp/outqueue.c:1205 [inline]
 sctp_outq_uncork+0x10b/0x200 net/sctp/outqueue.c:777
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1815 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline]
 sctp_do_sm+0x520/0x4fd0 net/sctp/sm_sideeffect.c:1170
 sctp_primitive_ASSOCIATE+0x98/0xc0 net/sctp/primitive.c:88
 __sctp_connect+0x908/0xd40 net/sctp/socket.c:1244
 sctp_connect net/sctp/socket.c:4523 [inline]
 sctp_inet_connect+0x14b/0x1b0 net/sctp/socket.c:4538
 __sys_connect+0x265/0x2c0 net/socket.c:1663
 __do_sys_connect net/socket.c:1674 [inline]
 __se_sys_connect net/socket.c:1671 [inline]
 __x64_sys_connect+0x6f/0xb0 net/socket.c:1671
 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:00007f8254ec7c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 0000000000002380 RCX: 000000000045de59
RDX: 000000000000001c RSI: 0000000020000080 RDI: 0000000000000003
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffe86bab74f R14: 00007f8254ec89c0 R15: 000000000118bf2c
================================================================================
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
xt_NFQUEUE: number of total queues is 0
(unnamed net_device) (uninitialized): HSR: Slave1 device not specified
xt_NFQUEUE: number of total queues is 0
(unnamed net_device) (uninitialized): HSR: Slave1 device not specified
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): VFS: Can't find ext4 filesystem