============================= WARNING: suspicious RCU usage 4.14.0+ #129 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-executor1/23807: #0: (sk_lock-AF_INET6){+.+.}, at: [] lock_sock include/net/sock.h:1465 [inline] #0: (sk_lock-AF_INET6){+.+.}, at: [] inet6_bind+0x35c/0x1020 net/ipv6/af_inet6.c:310 stack backtrace: CPU: 0 PID: 23807 Comm: syz-executor1 Not tainted 4.14.0+ #129 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:4675 ireq_opt_deref include/net/inet_sock.h:135 [inline] inet_csk_route_req+0x82a/0xca0 net/ipv4/inet_connection_sock.c:544 dccp_v4_send_response+0xa7/0x640 net/dccp/ipv4.c:485 dccp_v4_conn_request+0x9f4/0x11b0 net/dccp/ipv4.c:633 dccp_v6_conn_request+0xd30/0x1350 net/dccp/ipv6.c:317 dccp_rcv_state_process+0x574/0x1620 net/dccp/input.c:612 dccp_v4_do_rcv+0xeb/0x160 net/dccp/ipv4.c:682 dccp_v6_do_rcv+0x81a/0x9b0 net/dccp/ipv6.c:578 sk_backlog_rcv include/net/sock.h:911 [inline] __release_sock+0x124/0x360 net/core/sock.c:2264 release_sock+0xa4/0x2a0 net/core/sock.c:2779 inet6_bind+0x3ad/0x1020 net/ipv6/af_inet6.c:412 SYSC_bind+0x1b4/0x3f0 net/socket.c:1475 SyS_bind+0x24/0x30 net/socket.c:1461 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452879 RSP: 002b:00007f96269a7be8 EFLAGS: 00000212 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 0000000000758190 RCX: 0000000000452879 RDX: 000000000000001c RSI: 0000000020000000 RDI: 0000000000000013 RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 R13: 0000000000a6f7ff R14: 00007f96269a89c0 R15: 0000000000000002 ============================= WARNING: suspicious RCU usage 4.14.0+ #129 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-executor1/23807: #0: (sk_lock-AF_INET6){+.+.}, at: [] lock_sock include/net/sock.h:1465 [inline] #0: (sk_lock-AF_INET6){+.+.}, at: [] inet6_bind+0x35c/0x1020 net/ipv6/af_inet6.c:310 stack backtrace: CPU: 0 PID: 23807 Comm: syz-executor1 Not tainted 4.14.0+ #129 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:4675 ireq_opt_deref include/net/inet_sock.h:135 [inline] dccp_v4_send_response+0x4b0/0x640 net/dccp/ipv4.c:496 dccp_v4_conn_request+0x9f4/0x11b0 net/dccp/ipv4.c:633 dccp_v6_conn_request+0xd30/0x1350 net/dccp/ipv6.c:317 dccp_rcv_state_process+0x574/0x1620 net/dccp/input.c:612 dccp_v4_do_rcv+0xeb/0x160 net/dccp/ipv4.c:682 dccp_v6_do_rcv+0x81a/0x9b0 net/dccp/ipv6.c:578 sk_backlog_rcv include/net/sock.h:911 [inline] __release_sock+0x124/0x360 net/core/sock.c:2264 release_sock+0xa4/0x2a0 net/core/sock.c:2779 inet6_bind+0x3ad/0x1020 net/ipv6/af_inet6.c:412 SYSC_bind+0x1b4/0x3f0 net/socket.c:1475 SyS_bind+0x24/0x30 net/socket.c:1461 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452879 RSP: 002b:00007f96269a7be8 EFLAGS: 00000212 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 0000000000758190 RCX: 0000000000452879 RDX: 000000000000001c RSI: 0000000020000000 RDI: 0000000000000013 RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 R13: 0000000000a6f7ff R14: 00007f96269a89c0 R15: 0000000000000002 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=46 sclass=netlink_tcpdiag_socket pig=23826 comm=syz-executor6 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=4096 sclass=netlink_tcpdiag_socket pig=23803 comm=syz-executor4 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=1539 sclass=netlink_route_socket pig=23840 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=46 sclass=netlink_tcpdiag_socket pig=23839 comm=syz-executor6 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=1539 sclass=netlink_route_socket pig=23840 comm=syz-executor3 dccp_invalid_packet: P.Data Offset(0) too small 8021q: VLANs not supported on lo 8021q: VLANs not supported on lo dccp_invalid_packet: P.Data Offset(0) too small sctp: [Deprecated]: syz-executor5 (pid 24036) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead SELinux: unrecognized netlink message: protocol=0 nlmsg_type=31102 sclass=netlink_route_socket pig=24043 comm=syz-executor6 do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app SELinux: unrecognized netlink message: protocol=0 nlmsg_type=31102 sclass=netlink_route_socket pig=24043 comm=syz-executor6 do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app sctp: [Deprecated]: syz-executor5 (pid 24079) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead dccp_close: ABORT with 5085 bytes unread SELinux: unrecognized netlink message: protocol=0 nlmsg_type=27305 sclass=netlink_route_socket pig=24209 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=27305 sclass=netlink_route_socket pig=24209 comm=syz-executor3 nla_parse: 26 callbacks suppressed netlink: 2 bytes leftover after parsing attributes in process `syz-executor4'. IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE IPv6: NLM_F_CREATE should be set when creating new route IPv6: NLM_F_CREATE should be set when creating new route netlink: 3 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 6 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor4'. IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE netlink: 6 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 58 bytes leftover after parsing attributes in process `syz-executor2'. sctp: [Deprecated]: syz-executor5 (pid 24485) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor3 (pid 24490) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor3 (pid 24529) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor5 (pid 24519) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead A link change request failed with some changes committed already. Interface øÿÿÿ may have been left with an inconsistent configuration, please check. A link change request failed with some changes committed already. Interface øÿÿÿ may have been left with an inconsistent configuration, please check. dccp_close: ABORT with 2 bytes unread selinux_nlmsg_perm: 7 callbacks suppressed SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=24974 comm=syz-executor1 device lo entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): syz7: link is not ready SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=25142 comm=syz-executor1 sctp: [Deprecated]: syz-executor0 (pid 25162) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor0 (pid 25162) Use of int in maxseg socket option. Use struct sctp_assoc_value instead IPv6: NLM_F_REPLACE set, but no existing node found! IPv6: NLM_F_REPLACE set, but no existing node found! sctp: [Deprecated]: syz-executor7 (pid 25378) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor7 (pid 25385) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead SELinux: unrecognized netlink message: protocol=0 nlmsg_type=27305 sclass=netlink_route_socket pig=25415 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=27305 sclass=netlink_route_socket pig=25415 comm=syz-executor3 nla_parse: 23 callbacks suppressed netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 14 bytes leftover after parsing attributes in process `syz-executor1'. sctp: [Deprecated]: syz-executor0 (pid 25653) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor0 (pid 25653) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor2 (pid 25655) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor2 (pid 25655) Use of int in maxseg socket option. Use struct sctp_assoc_value instead SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=25685 comm=syz-executor7 netlink: 14 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor0'. SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=25944 comm=syz-executor5 netlink: 3 bytes leftover after parsing attributes in process `syz-executor3'. SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=25969 comm=syz-executor5 netlink: 3 bytes leftover after parsing attributes in process `syz-executor3'. SELinux: unrecognized netlink message: protocol=6 nlmsg_type=25898 sclass=netlink_xfrm_socket pig=25956 comm=syz-executor6 netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. sctp: [Deprecated]: syz-executor1 (pid 26066) Use of int in max_burst socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor1 (pid 26096) Use of int in max_burst socket option. Use struct sctp_assoc_value instead