====================================================== sctp: [Deprecated]: syz-executor7 (pid 5609) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead WARNING: possible circular locking dependency detected 4.15.0+ #221 Not tainted ------------------------------------------------------ syz-executor0/5608 is trying to acquire lock: (sk_lock-AF_INET){+.+.}, at: [<000000004d52fea2>] lock_sock include/net/sock.h:1463 [inline] (sk_lock-AF_INET){+.+.}, at: [<000000004d52fea2>] do_ip_setsockopt.isra.12+0x1d9/0x3210 net/ipv4/ip_sockglue.c:646 but task is already holding lock: netlink: 'syz-executor5': attribute type 18 has an invalid length. (rtnl_mutex){+.+.}, at: [<000000004945d6c6>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (rtnl_mutex){+.+.} netlink: 'syz-executor5': attribute type 18 has an invalid length. : __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 sctp: [Deprecated]: syz-executor7 (pid 5620) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 unregister_netdevice_notifier+0x91/0x4e0 net/core/dev.c:1673 clusterip_config_entry_put net/ipv4/netfilter/ipt_CLUSTERIP.c:114 [inline] clusterip_tg_destroy+0x389/0x6e0 net/ipv4/netfilter/ipt_CLUSTERIP.c:518 cleanup_entry+0x218/0x350 net/ipv4/netfilter/ip_tables.c:654 __do_replace+0x79d/0xa50 net/ipv4/netfilter/ip_tables.c:1089 do_replace net/ipv4/netfilter/ip_tables.c:1145 [inline] do_ipt_set_ctl+0x40f/0x5f0 net/ipv4/netfilter/ip_tables.c:1675 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115 ip_setsockopt+0x97/0xa0 net/ipv4/ip_sockglue.c:1259 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2905 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2975 SYSC_setsockopt net/socket.c:1849 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1828 entry_SYSCALL_64_fastpath+0x29/0xa0 -> #1 (&xt[i].mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 xt_find_table_lock+0x3e/0x3e0 net/netfilter/x_tables.c:1041 xt_request_find_table_lock+0x28/0xc0 net/netfilter/x_tables.c:1088 get_info+0x154/0x690 net/ipv6/netfilter/ip6_tables.c:989 do_ipt_get_ctl+0x159/0xac0 net/ipv4/netfilter/ip_tables.c:1699 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x6a/0xc0 net/netfilter/nf_sockopt.c:122 ip_getsockopt+0x15c/0x220 net/ipv4/ip_sockglue.c:1571 tcp_getsockopt+0x82/0xd0 net/ipv4/tcp.c:3359 sock_common_getsockopt+0x95/0xd0 net/core/sock.c:2934 SYSC_getsockopt net/socket.c:1880 [inline] SyS_getsockopt+0x178/0x340 net/socket.c:1862 entry_SYSCALL_64_fastpath+0x29/0xa0 -> #0 (sk_lock-AF_INET){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3920 lock_sock_nested+0xc2/0x110 net/core/sock.c:2777 lock_sock include/net/sock.h:1463 [inline] do_ip_setsockopt.isra.12+0x1d9/0x3210 net/ipv4/ip_sockglue.c:646 ip_setsockopt+0x3a/0xa0 net/ipv4/ip_sockglue.c:1252 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2905 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2975 SYSC_setsockopt net/socket.c:1849 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1828 entry_SYSCALL_64_fastpath+0x29/0xa0 other info that might help us debug this: Chain exists of: sk_lock-AF_INET --> &xt[i].mutex --> rtnl_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(rtnl_mutex); lock(&xt[i].mutex); lock(rtnl_mutex); lock(sk_lock-AF_INET); *** DEADLOCK *** 1 lock held by syz-executor0/5608: #0: (rtnl_mutex){+.+.}, at: [<000000004945d6c6>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 stack backtrace: CPU: 0 PID: 5608 Comm: syz-executor0 Not tainted 4.15.0+ #221 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 print_circular_bug.isra.38+0x2cd/0x2dc kernel/locking/lockdep.c:1223 check_prev_add kernel/locking/lockdep.c:1863 [inline] check_prevs_add kernel/locking/lockdep.c:1976 [inline] validate_chain kernel/locking/lockdep.c:2417 [inline] __lock_acquire+0x30a8/0x3e00 kernel/locking/lockdep.c:3431 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3920 lock_sock_nested+0xc2/0x110 net/core/sock.c:2777 lock_sock include/net/sock.h:1463 [inline] do_ip_setsockopt.isra.12+0x1d9/0x3210 net/ipv4/ip_sockglue.c:646 ip_setsockopt+0x3a/0xa0 net/ipv4/ip_sockglue.c:1252 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2905 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2975 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:00007f8306030c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f8306031700 RCX: 0000000000453299 RDX: 000000000000002d RSI: 0000000000000000 RDI: 0000000000000013 RBP: 0000000000000000 R08: 0000000000000090 R09: 0000000000000000 R10: 00000000202c1000 R11: 0000000000000212 R12: 0000000000000000 R13: 0000000000a2f33f R14: 00007f83060319c0 R15: 0000000000000000 netlink: 24 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 'syz-executor4': attribute type 1 has an invalid length. netlink: 24 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 'syz-executor4': attribute type 1 has an invalid length. netlink: 76 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 76 bytes leftover after parsing attributes in process `syz-executor6'. TCP: request_sock_TCPv6: Possible SYN flooding on port 20030. Sending cookies. Check SNMP counters. raw_sendmsg: syz-executor1 forgot to set AF_INET. Fix it! netlink: 'syz-executor5': attribute type 3 has an invalid length. x_tables: ip6_tables: .0 target: invalid size 8 (kernel) != (user) 4 sctp: [Deprecated]: syz-executor3 (pid 6071) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead x_tables: ip6_tables: .0 target: invalid size 8 (kernel) != (user) 4 sctp: [Deprecated]: syz-executor3 (pid 6088) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor0 (pid 6104) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead xt_nfacct: accounting object with name `syz0' does not exists xt_nfacct: accounting object with name `syz0' does not exists sctp: [Deprecated]: syz-executor0 (pid 6120) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead netlink: 'syz-executor3': attribute type 10 has an invalid length. Cannot find add_set index 0 as target Cannot find add_set index 0 as target x_tables: ip6_tables: TCPMSS target: only valid for protocol 6 x_tables: ip6_tables: TCPMSS target: only valid for protocol 6 device lo entered promiscuous mode sctp: [Deprecated]: syz-executor3 (pid 6513) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead ieee80211 phy2: Selected rate control algorithm 'minstrel_ht' sctp: [Deprecated]: syz-executor3 (pid 6534) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead x_tables: ip_tables: osf match: only valid for protocol 6 kauditd_printk_skb: 10 callbacks suppressed audit: type=1400 audit(1517953435.192:32): avc: denied { bind } for pid=6766 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 TCP: request_sock_TCPv6: Possible SYN flooding on port 20014. Sending cookies. Check SNMP counters. ipt_CLUSTERIP: Please specify destination IP audit: type=1400 audit(1517953435.405:33): avc: denied { map } for pid=6834 comm="syz-executor2" path=2F616E6F6E5F6875676570616765202864656C6574656429 dev="hugetlbfs" ino=16152 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:hugetlbfs_t:s0 tclass=file permissive=1 audit: type=1400 audit(1517953435.534:34): avc: denied { create } for pid=6885 comm="syz-executor3" 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 audit: type=1400 audit(1517953435.587:35): avc: denied { write } for pid=6885 comm="syz-executor3" 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 device syz0 entered promiscuous mode device syz0 left promiscuous mode device syz0 entered promiscuous mode audit: type=1400 audit(1517953435.840:36): avc: denied { create } for pid=6988 comm="syz-executor7" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_iscsi_socket permissive=1 netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'. Subscription rejected, illegal request netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'. TCP: request_sock_TCP: Possible SYN flooding on port 20013. Sending cookies. Check SNMP counters. xt_CONNSECMARK: target only valid in the 'mangle' or 'security' tables, not 'filter'. xt_CONNSECMARK: target only valid in the 'mangle' or 'security' tables, not 'filter'. dccp_invalid_packet: P.type (REQUEST) not Data || [Data]Ack, while P.X == 0 audit: type=1400 audit(1517953436.356:37): avc: denied { ioctl } for pid=7170 comm="syz-executor7" path="socket:[17430]" dev="sockfs" ino=17430 ioctlcmd=0x8940 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 dccp_invalid_packet: P.type (REQUEST) not Data || [Data]Ack, while P.X == 0 audit: type=1400 audit(1517953436.490:38): avc: denied { connect } for pid=7242 comm="syz-executor5" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 RDS: rds_bind could not find a transport for 172.20.0.187, load rds_tcp or rds_rdma? RDS: rds_bind could not find a transport for 172.20.0.187, load rds_tcp or rds_rdma? netlink: 8 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor2'. audit: type=1400 audit(1517953436.972:39): avc: denied { create } for pid=7433 comm="syz-executor0" 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 audit: type=1400 audit(1517953437.116:40): avc: denied { name_bind } for pid=7465 comm="syz-executor1" src=20004 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:port_t:s0 tclass=dccp_socket permissive=1 Cannot find add_set index 0 as target dccp_invalid_packet: pskb_may_pull failed Cannot find add_set index 0 as target dccp_invalid_packet: pskb_may_pull failed netlink: 'syz-executor6': attribute type 1 has an invalid length. audit: type=1400 audit(1517953437.394:41): avc: denied { getopt } for pid=7580 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 netlink: 'syz-executor4': attribute type 1 has an invalid length. netlink: 'syz-executor4': attribute type 1 has an invalid length. xt_socket: unknown flags 0xfe xt_socket: unknown flags 0xfe Cannot find add_set index 7 as target Cannot find add_set index 7 as target rdma_op 0000000012a5bcd2 conn xmit_rdma (null) netlink: 12 bytes leftover after parsing attributes in process `syz-executor6'. ieee80211 phy3: Selected rate control algorithm 'minstrel_ht' netlink: 12 bytes leftover after parsing attributes in process `syz-executor6'. ieee80211 phy4: Selected rate control algorithm 'minstrel_ht' netlink: 'syz-executor4': attribute type 15 has an invalid length. netlink: 'syz-executor4': attribute type 15 has an invalid length. netlink: 'syz-executor4': attribute type 15 has an invalid length. mip6: mip6_rthdr_init_state: state's mode is not 2: 0 mip6: mip6_rthdr_init_state: state's mode is not 2: 0 Cannot find add_set index 2715 as target atomic_op 000000006b401d81 conn xmit_atomic (null) netlink: 'syz-executor0': attribute type 21 has an invalid length. netlink: 'syz-executor3': attribute type 1 has an invalid length. netlink: 'syz-executor0': attribute type 21 has an invalid length. netlink: 'syz-executor3': attribute type 1 has an invalid length. xt_socket: unknown flags 0xf8 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=8185 comm=syz-executor4 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=8206 comm=syz-executor4 sctp: [Deprecated]: syz-executor1 (pid 8281) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor1 (pid 8321) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor0 (pid 8325) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor0 (pid 8340) Use of int in maxseg socket option. Use struct sctp_assoc_value instead ieee80211 phy5: Selected rate control algorithm 'minstrel_ht' kauditd_printk_skb: 4 callbacks suppressed audit: type=1400 audit(1517953440.280:46): avc: denied { create } for pid=8714 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_rdma_socket permissive=1 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 IPv6: NLM_F_CREATE should be set when creating new route syz-executor4 (8719) used greatest stack depth: 13120 bytes left audit: type=1400 audit(1517953440.566:47): avc: denied { write } for pid=8778 comm="syz-executor5" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:unlabeled_t:s0 tclass=socket permissive=1 audit: type=1400 audit(1517953440.577:48): avc: denied { read } for pid=8778 comm="syz-executor5" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:unlabeled_t:s0 tclass=socket permissive=1 xt_CONNSECMARK: invalid mode: 0 xt_CONNSECMARK: invalid mode: 0 xt_DSCP: dscp fc out of range TCP: request_sock_TCPv6: Possible SYN flooding on port 20026. Sending cookies. Check SNMP counters. audit: type=1400 audit(1517953441.084:49): avc: denied { setopt } for pid=8974 comm="syz-executor7" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:unlabeled_t:s0 tclass=socket permissive=1 sctp: [Deprecated]: syz-executor7 (pid 9134) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor7 (pid 9134) Use of int in maxseg socket option. Use struct sctp_assoc_value instead