BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt()
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=16314 comm=syz-executor6
CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 4.16.0-rc4+ #278
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x24d lib/dump_stack.c:53
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=16314 comm=syz-executor6
 tfrc_rx_hist_sample_rtt+0x407/0x4d0 net/dccp/ccids/lib/packet_history.c:422
 ccid3_hc_rx_packet_recv+0x696/0xeb3 net/dccp/ccids/ccid3.c:765
 ccid_hc_rx_packet_recv net/dccp/ccid.h:185 [inline]
 dccp_deliver_input_to_ccids+0xd9/0x250 net/dccp/input.c:180
 dccp_rcv_established+0x88/0xb0 net/dccp/input.c:378
 dccp_v4_do_rcv+0x135/0x160 net/dccp/ipv4.c:653
 sk_backlog_rcv include/net/sock.h:909 [inline]
 __sk_receive_skb+0x33e/0xc10 net/core/sock.c:513
 dccp_v4_rcv+0xf5f/0x1c80 net/dccp/ipv4.c:874
 ip_local_deliver_finish+0x2f1/0xc50 net/ipv4/ip_input.c:215
 NF_HOOK include/linux/netfilter.h:288 [inline]
 ip_local_deliver+0x1ce/0x6e0 net/ipv4/ip_input.c:256
 dst_input include/net/dst.h:450 [inline]
 ip_rcv_finish+0xa36/0x2040 net/ipv4/ip_input.c:396
 NF_HOOK include/linux/netfilter.h:288 [inline]
 ip_rcv+0xb76/0x1820 net/ipv4/ip_input.c:492
 __netif_receive_skb_core+0x1a41/0x3460 net/core/dev.c:4557
netlink: 'syz-executor3': attribute type 2 has an invalid length.
netlink: 'syz-executor3': attribute type 2 has an invalid length.
dccp_close: ABORT with 1 bytes unread
 __netif_receive_skb+0x2c/0x1b0 net/core/dev.c:4622
 process_backlog+0x203/0x740 net/core/dev.c:5302
 napi_poll net/core/dev.c:5700 [inline]
 net_rx_action+0x792/0x1910 net/core/dev.c:5766
 __do_softirq+0x2d7/0xb85 kernel/softirq.c:285
 run_ksoftirqd+0x86/0x100 kernel/softirq.c:666
 smpboot_thread_fn+0x450/0x7c0 kernel/smpboot.c:164
 kthread+0x33c/0x400 kernel/kthread.c:238
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:406
netlink: 11 bytes leftover after parsing attributes in process `syz-executor7'.
netlink: 'syz-executor5': attribute type 29 has an invalid length.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 'syz-executor5': attribute type 29 has an invalid length.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 'syz-executor5': attribute type 29 has an invalid length.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 'syz-executor5': attribute type 29 has an invalid length.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 'syz-executor5': attribute type 29 has an invalid length.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 'syz-executor5': attribute type 29 has an invalid length.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 'syz-executor5': attribute type 29 has an invalid length.
ip6gretap0: Invalid MTU 0 requested, hw min 68
ip6gretap0: Invalid MTU 0 requested, hw min 68
kernel msg: ebtables bug: please report to author: Wrong len argument
kernel msg: ebtables bug: please report to author: Wrong len argument
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=48425 sclass=netlink_route_socket pig=16710 comm=syz-executor0
sctp: [Deprecated]: syz-executor1 (pid 16733) Use of struct sctp_assoc_value in delayed_ack socket option.
Use struct sctp_sack_info instead
kernel msg: ebtables bug: please report to author: EBT_ENTRY_OR_ENTRIES shouldn't be set in distinguisher
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=48425 sclass=netlink_route_socket pig=16740 comm=syz-executor0
sctp: [Deprecated]: syz-executor1 (pid 16727) Use of struct sctp_assoc_value in delayed_ack socket option.
Use struct sctp_sack_info instead
kernel msg: ebtables bug: please report to author: EBT_ENTRY_OR_ENTRIES shouldn't be set in distinguisher
x_tables: eb_tables: cgroup match: used from hooks INPUT, but only valid from INPUT/OUTPUT/POSTROUTING
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=63090 sclass=netlink_xfrm_socket pig=17337 comm=syz-executor2
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=63090 sclass=netlink_xfrm_socket pig=17337 comm=syz-executor2
WARNING: CPU: 1 PID: 17422 at ./include/net/sock.h:639 sk_del_node_init include/net/sock.h:639 [inline]
WARNING: CPU: 1 PID: 17422 at ./include/net/sock.h:639 smc_unhash_sk+0x335/0x450 net/smc/af_smc.c:91