netlink: 8 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor6'. ============================= WARNING: suspicious RCU usage 4.15.0-rc9+ #214 Not tainted ----------------------------- ./include/net/inet_sock.h:136 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor4/10208: #0: (sk_lock-AF_INET6){+.+.}, at: [<000000004d3b553c>] lock_sock include/net/sock.h:1463 [inline] #0: (sk_lock-AF_INET6){+.+.}, at: [<000000004d3b553c>] do_ipv6_setsockopt.isra.8+0x23d/0x39d0 net/ipv6/ipv6_sockglue.c:167 stack backtrace: CPU: 1 PID: 10208 Comm: syz-executor4 Not tainted 4.15.0-rc9+ #214 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+0x194/0x257 lib/dump_stack.c:53 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4585 ireq_opt_deref include/net/inet_sock.h:135 [inline] inet_csk_route_req+0x824/0xca0 net/ipv4/inet_connection_sock.c:544 dccp_v4_send_response+0xa7/0x650 net/dccp/ipv4.c:485 dccp_v4_conn_request+0x9ee/0x11b0 net/dccp/ipv4.c:633 dccp_v6_conn_request+0xd30/0x1410 net/dccp/ipv6.c:317 dccp_rcv_state_process+0x574/0x1620 net/dccp/input.c:612 dccp_v4_do_rcv+0xf1/0x160 net/dccp/ipv4.c:682 dccp_v6_do_rcv+0x86a/0xa70 net/dccp/ipv6.c:578 sk_backlog_rcv include/net/sock.h:908 [inline] __release_sock+0x124/0x360 net/core/sock.c:2274 release_sock+0xa4/0x2a0 net/core/sock.c:2789 do_ipv6_setsockopt.isra.8+0x50a/0x39d0 net/ipv6/ipv6_sockglue.c:898 ipv6_setsockopt+0xd7/0x150 net/ipv6/ipv6_sockglue.c:922 dccp_setsockopt+0x85/0xd0 net/dccp/proto.c:576 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978 SYSC_setsockopt net/socket.c:1849 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1828 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f385454fc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000453299 RDX: 0000000000000020 RSI: 0000000000000029 RDI: 0000000000000013 RBP: 0000000000000026 R08: 0000000000000020 R09: 0000000000000000 R10: 0000000020030000 R11: 0000000000000212 R12: 00000000006ef430 R13: 00000000ffffffff R14: 00007f38545506d4 R15: 0000000000000003 ============================= WARNING: suspicious RCU usage 4.15.0-rc9+ #214 Not tainted ----------------------------- ./include/net/inet_sock.h:136 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor4/10208: #0: (sk_lock-AF_INET6){+.+.}, at: [<000000004d3b553c>] lock_sock include/net/sock.h:1463 [inline] #0: (sk_lock-AF_INET6){+.+.}, at: [<000000004d3b553c>] do_ipv6_setsockopt.isra.8+0x23d/0x39d0 net/ipv6/ipv6_sockglue.c:167 stack backtrace: CPU: 1 PID: 10208 Comm: syz-executor4 Not tainted 4.15.0-rc9+ #214 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+0x194/0x257 lib/dump_stack.c:53 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4585 ireq_opt_deref include/net/inet_sock.h:135 [inline] dccp_v4_send_response+0x4b6/0x650 net/dccp/ipv4.c:496 dccp_v4_conn_request+0x9ee/0x11b0 net/dccp/ipv4.c:633 dccp_v6_conn_request+0xd30/0x1410 net/dccp/ipv6.c:317 dccp_rcv_state_process+0x574/0x1620 net/dccp/input.c:612 dccp_v4_do_rcv+0xf1/0x160 net/dccp/ipv4.c:682 dccp_v6_do_rcv+0x86a/0xa70 net/dccp/ipv6.c:578 sk_backlog_rcv include/net/sock.h:908 [inline] __release_sock+0x124/0x360 net/core/sock.c:2274 release_sock+0xa4/0x2a0 net/core/sock.c:2789 do_ipv6_setsockopt.isra.8+0x50a/0x39d0 net/ipv6/ipv6_sockglue.c:898 ipv6_setsockopt+0xd7/0x150 net/ipv6/ipv6_sockglue.c:922 dccp_setsockopt+0x85/0xd0 net/dccp/proto.c:576 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978 SYSC_setsockopt net/socket.c:1849 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1828 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f385454fc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000453299 RDX: 0000000000000020 RSI: 0000000000000029 RDI: 0000000000000013 RBP: 0000000000000026 R08: 0000000000000020 R09: 0000000000000000 R10: 0000000020030000 R11: 0000000000000212 R12: 00000000006ef430 R13: 00000000ffffffff R14: 00007f38545506d4 R15: 0000000000000003 netlink: 'syz-executor0': attribute type 21 has an invalid length. netlink: 'syz-executor0': attribute type 21 has an invalid length. ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x3 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x3 audit: type=1400 audit(1517203896.349:55): avc: denied { read } for pid=10503 comm="syz-executor7" path="socket:[21353]" dev="sockfs" ino=21353 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_crypto_socket permissive=1 netlink: 'syz-executor0': attribute type 1 has an invalid length. audit: type=1400 audit(1517203896.527:56): avc: denied { map } for pid=10558 comm="syz-executor1" path="socket:[21396]" dev="sockfs" ino=21396 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=socket permissive=1 netlink: 'syz-executor0': attribute type 1 has an invalid length. netlink: 7 bytes leftover after parsing attributes in process `syz-executor3'. PF_BRIDGE: br_mdb_parse() with non-bridge netlink: 11 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor6'. IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE IPv6: NLM_F_CREATE should be set when creating new route netlink: 11 bytes leftover after parsing attributes in process `syz-executor6'. audit: type=1400 audit(1517203897.387:57): avc: denied { net_broadcast } for pid=10744 comm="syz-executor4" capability=11 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 openvswitch: netlink: ufid size 20 bytes exceeds the range (1, 16) openvswitch: netlink: Flow get message rejected, Key attribute missing. IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE openvswitch: netlink: ufid size 20 bytes exceeds the range (1, 16) openvswitch: netlink: Flow get message rejected, Key attribute missing. netlink: 'syz-executor3': attribute type 1 has an invalid length. netlink: 'syz-executor3': attribute type 1 has an invalid length. netlink: 10 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 10 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. ip6t_REJECT: TCP_RESET illegal for non-tcp TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. ip6t_REJECT: TCP_RESET illegal for non-tcp SELinux: unrecognized netlink message: protocol=0 nlmsg_type=64377 sclass=netlink_route_socket pig=11357 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=11375 comm=syz-executor1 xt_l2tp: missing protocol rule (udp|l2tpip) audit: type=1400 audit(1517203900.064:58): avc: denied { create } for pid=11489 comm="syz-executor6" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_scsitransport_socket permissive=1 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=33 sclass=netlink_tcpdiag_socket pig=11673 comm=syz-executor4 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=33 sclass=netlink_tcpdiag_socket pig=11691 comm=syz-executor4 sctp: [Deprecated]: syz-executor5 (pid 11692) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor5 (pid 11692) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead ipt_rpfilter: unknown options encountered ip_tables: iptables: counters copy to user failed while replacing table ipt_rpfilter: unknown options encountered ip_tables: iptables: counters copy to user failed while replacing table ipt_CLUSTERIP: unknown mode 3 sctp: [Deprecated]: syz-executor3 (pid 11870) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead netlink: 1 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor6'. sctp: [Deprecated]: syz-executor3 (pid 11882) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead device syz3 entered promiscuous mode IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE netlink: 'syz-executor0': attribute type 1 has an invalid length. netlink: 'syz-executor0': attribute type 1 has an invalid length. IPv6: NLM_F_CREATE should be set when creating new route IPv6: NLM_F_CREATE should be set when creating new route IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE netlink: 'syz-executor0': attribute type 1 has an invalid length. netlink: 'syz-executor0': attribute type 1 has an invalid length. netlink: 'syz-executor2': attribute type 21 has an invalid length. netlink: 'syz-executor2': attribute type 21 has an invalid length. dccp_xmit_packet: Payload too large (65423) for featneg. dccp_xmit_packet: Payload too large (65423) for featneg. Cannot find add_set index 1 as target Cannot find add_set index 1 as target netlink: 40 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor6'. IPv4: Oversized IP packet from 127.0.0.1 IPv4: Oversized IP packet from 127.0.0.1 IPv4: Oversized IP packet from 127.0.0.1 IPv4: Oversized IP packet from 127.0.0.1