audit: type=1804 audit(1602914413.610:46): pid=14057 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir171209340/syzkaller.RrTmwJ/245/bus" dev="sda1" ino=16693 res=1 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. ================================================================================ 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: 14057 Comm: syz-executor.2 Not tainted 4.19.150-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 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. 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 tcp_v6_send_synack+0x566/0xa50 net/ipv6/tcp_ipv6.c:505 tcp_conn_request+0x15ed/0x36e0 net/ipv4/tcp_input.c:6550 tcp_v6_conn_request+0x100/0x290 net/ipv6/tcp_ipv6.c:1041 tcp_rcv_state_process+0xae9/0x4919 net/ipv4/tcp_input.c:6045 tcp_v6_do_rcv+0x49c/0x13b0 net/ipv6/tcp_ipv6.c:1351 tcp_v6_rcv+0x3400/0x39f0 net/ipv6/tcp_ipv6.c:1545 ip6_input_finish+0x487/0x1840 net/ipv6/ip6_input.c:395 NF_HOOK include/linux/netfilter.h:289 [inline] ip6_input+0xcf/0x420 net/ipv6/ip6_input.c:438 dst_input include/net/dst.h:461 [inline] ip6_rcv_finish+0x1a0/0x2b0 net/ipv6/ip6_input.c:76 NF_HOOK include/linux/netfilter.h:289 [inline] ipv6_rcv+0xf2/0x440 net/ipv6/ip6_input.c:283 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:4954 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066 process_backlog+0x261/0x760 net/core/dev.c:5848 napi_poll net/core/dev.c:6272 [inline] net_rx_action+0x4e5/0x10d0 net/core/dev.c:6338 __do_softirq+0x27d/0xad2 kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092 do_softirq.part.0+0x168/0x200 kernel/softirq.c:336 do_softirq kernel/softirq.c:328 [inline] __local_bh_enable_ip+0x22d/0x2a0 kernel/softirq.c:189 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:721 [inline] ip6_finish_output2+0x120d/0x2370 net/ipv6/ip6_output.c:121 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:00007f3ef1da0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000000000002e8c0 RCX: 000000000045de59 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008 RBP: 000000000118c020 R08: 0000000020000280 R09: 000000000000001c R10: 0000000020000004 R11: 0000000000000246 R12: 000000000118bfd4 R13: 00007ffe34bf2f5f R14: 00007f3ef1da19c0 R15: 000000000118bfd4 ================================================================================ audit: type=1804 audit(1602914414.520:47): pid=14082 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir171209340/syzkaller.RrTmwJ/245/bus" dev="sda1" ino=16693 res=1 audit: type=1804 audit(1602914414.720:48): pid=14052 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir171209340/syzkaller.RrTmwJ/245/bus" dev="sda1" ino=16693 res=1 audit: type=1804 audit(1602914414.730:49): pid=14052 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir171209340/syzkaller.RrTmwJ/245/bus" dev="sda1" ino=16693 res=1 overlayfs: missing 'lowerdir' audit: type=1804 audit(1602914416.310:50): pid=14108 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir171209340/syzkaller.RrTmwJ/246/bus" dev="sda1" ino=16711 res=1 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. audit: type=1804 audit(1602914416.520:51): pid=14116 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir171209340/syzkaller.RrTmwJ/246/bus" dev="sda1" ino=16711 res=1 netlink: 376 bytes leftover after parsing attributes in process `syz-executor.4'. device veth1_macvtap left promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=14131 comm=syz-executor.3 netlink: 376 bytes leftover after parsing attributes in process `syz-executor.4'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=14135 comm=syz-executor.3 audit: type=1804 audit(1602914419.421:52): pid=14177 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir171209340/syzkaller.RrTmwJ/247/bus" dev="sda1" ino=16730 res=1 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. audit: type=1804 audit(1602914419.641:53): pid=14186 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir171209340/syzkaller.RrTmwJ/247/bus" dev="sda1" ino=16730 res=1 audit: type=1800 audit(1602914420.531:54): pid=14212 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.5" name="bus" dev="sda1" ino=16737 res=0 audit: type=1800 audit(1602914421.491:55): pid=14235 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=16529 res=0 audit: type=1804 audit(1602914421.491:56): pid=14235 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir401501973/syzkaller.vpM0KV/256/bus" dev="sda1" ino=16529 res=1 IPVS: ftp: loaded support on port[0] = 21 audit: type=1804 audit(1602914422.441:57): pid=14258 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir171209340/syzkaller.RrTmwJ/248/bus" dev="sda1" ino=16748 res=1 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. audit: type=1804 audit(1602914422.651:58): pid=14279 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir171209340/syzkaller.RrTmwJ/248/bus" dev="sda1" ino=16748 res=1 audit: type=1804 audit(1602914423.211:59): pid=14300 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir401501973/syzkaller.vpM0KV/259/bus/file0" dev="sda1" ino=16760 res=1 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.