SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6106 comm=syz-executor0 ====================================================== WARNING: possible circular locking dependency detected 4.15.0+ #221 Not tainted ------------------------------------------------------ syz-executor6/6125 is trying to acquire lock: (sk_lock-AF_INET){+.+.}, at: [<000000008106836b>] lock_sock include/net/sock.h:1463 [inline] (sk_lock-AF_INET){+.+.}, at: [<000000008106836b>] do_ip_setsockopt.isra.12+0x1d9/0x3210 net/ipv4/ip_sockglue.c:646 but task is already holding lock: (rtnl_mutex){+.+.}, at: [<0000000093dcd16f>] 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){+.+.}: __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 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 syz-executor2 (6113) used greatest stack depth: 13632 bytes left 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 sctp_setsockopt+0x2b6/0x61d0 net/sctp/socket.c:4104 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-executor6/6125: #0: (rtnl_mutex){+.+.}, at: [<0000000093dcd16f>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 stack backtrace: CPU: 0 PID: 6125 Comm: syz-executor6 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 sctp_setsockopt+0x2b6/0x61d0 net/sctp/socket.c:4104 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:00007fa99c7bcc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299 RDX: 000000000000002d RSI: 0000000000000000 RDI: 0000000000000013 RBP: 00000000000003d9 R08: 0000000000000090 R09: 0000000000000000 R10: 0000000020019000 R11: 0000000000000212 R12: 00000000006f4cf8 R13: 00000000ffffffff R14: 00007fa99c7bd6d4 R15: 0000000000000000 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=1040 sclass=netlink_route_socket pig=6222 comm=syz-executor6 netlink: 'syz-executor3': attribute type 7 has an invalid length. netlink: 'syz-executor3': attribute type 7 has an invalid length. xt_ipcomp: unknown flags FE xt_ipcomp: unknown flags FE device bridge0 entered promiscuous mode device bridge0 left promiscuous mode device bridge0 entered promiscuous mode device bridge0 left promiscuous mode xt_policy: output policy not valid in PREROUTING and INPUT TCP: request_sock_TCP: Possible SYN flooding on port 20018. Sending cookies. Check SNMP counters. xt_policy: output policy not valid in PREROUTING and INPUT syz-executor4 (6746) used greatest stack depth: 13296 bytes left device lo entered promiscuous mode netlink: 'syz-executor6': attribute type 21 has an invalid length. netlink: 'syz-executor6': attribute type 1 has an invalid length. netlink: 'syz-executor6': attribute type 21 has an invalid length. netlink: 'syz-executor6': attribute type 1 has an invalid length. netlink: 'syz-executor7': attribute type 3 has an invalid length. sctp: [Deprecated]: syz-executor4 (pid 7022) Use of int in maxseg socket option. Use struct sctp_assoc_value instead netlink: 5 bytes leftover after parsing attributes in process `syz-executor2'. sctp: [Deprecated]: syz-executor4 (pid 7022) Use of int in maxseg socket option. Use struct sctp_assoc_value instead netlink: 'syz-executor7': attribute type 3 has an invalid length. netlink: 5 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 'syz-executor7': attribute type 3 has an invalid length. kauditd_printk_skb: 21 callbacks suppressed audit: type=1400 audit(1517964375.333:43): avc: denied { map } for pid=7186 comm="syz-executor2" path=2F616E6F6E5F6875676570616765202864656C6574656429 dev="hugetlbfs" ino=16887 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(1517964375.458:44): avc: denied { ioctl } for pid=7226 comm="syz-executor5" path="socket:[16931]" dev="sockfs" ino=16931 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 Unknown options in mask 4 Unknown options in mask 4 sctp: [Deprecated]: syz-executor6 (pid 7322) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor6 (pid 7334) Use of int in maxseg socket option. Use struct sctp_assoc_value instead audit: type=1400 audit(1517964375.750:45): avc: denied { accept } for pid=7354 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 IPv6: Can't replace route, no match found syz-executor5 (7566) used greatest stack depth: 13120 bytes left raw_sendmsg: syz-executor6 forgot to set AF_INET. Fix it! TCP: request_sock_TCPv6: Possible SYN flooding on port 20014. Sending cookies. Check SNMP counters. netlink: 'syz-executor2': attribute type 1 has an invalid length. netlink: 'syz-executor2': attribute type 1 has an invalid length. TCP: request_sock_TCP: Possible SYN flooding on port 20021. Sending cookies. Check SNMP counters. skbuff: bad partial csum: csum=65535/65535 len=14 syz4: Invalid MTU -2 requested, hw min 68 syz4: Invalid MTU -2 requested, hw min 68 audit: type=1400 audit(1517964377.384:46): avc: denied { write } for pid=8034 comm="syz-executor1" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:unlabeled_t:s0 tclass=socket permissive=1 xt_CT: netfilter: NOTRACK target is deprecated, use CT instead or upgrade iptables xt_CT: You must specify a L4 protocol, and not use inversions on it. xt_CT: You must specify a L4 protocol, and not use inversions on it. netlink: 48 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 48 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 'syz-executor5': attribute type 4 has an invalid length. syz5: Invalid MTU 18 requested, hw min 68 netlink: 'syz-executor5': attribute type 4 has an invalid length. syz5: Invalid MTU 18 requested, hw min 68 audit: type=1400 audit(1517964377.728:47): avc: denied { accept } for pid=8142 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_generic_socket permissive=1 audit: type=1400 audit(1517964377.772:48): avc: denied { setopt } for pid=8160 comm="syz-executor4" 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(1517964377.772:49): avc: denied { net_broadcast } for pid=8160 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 audit: type=1400 audit(1517964377.951:50): avc: denied { ioctl } for pid=8209 comm="syz-executor7" path="socket:[18307]" dev="sockfs" ino=18307 ioctlcmd=0x642d scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=1 audit: type=1400 audit(1517964377.987:51): avc: denied { accept } for pid=8209 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_fib_lookup_socket permissive=1 audit: type=1400 audit(1517964378.085:52): avc: denied { accept } for pid=8265 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_crypto_socket permissive=1 ip6_tables: ip6tables: counters copy to user failed while replacing table A link change request failed with some changes committed already. Interface syz0 may have been left with an inconsistent configuration, please check. A link change request failed with some changes committed already. Interface syz0 may have been left with an inconsistent configuration, please check. l2tp_ppp: sess 59/0: set debug=eaff5b7f 00000000: 00 02 00 00 00 09 ff 03 00 00 00 00 00 00 00 00 ................ 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ SELinux: unrecognized netlink message: protocol=9 nlmsg_type=24 sclass=netlink_audit_socket pig=8571 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=9 nlmsg_type=24 sclass=netlink_audit_socket pig=8586 comm=syz-executor3 kernel msg: ebtables bug: please report to author: Wrong len argument dccp_close: ABORT with 260 bytes unread IPv6: Can't replace route, no match found IPv6: Can't replace route, no match found netlink: 'syz-executor6': attribute type 21 has an invalid length. netlink: 'syz-executor6': attribute type 1 has an invalid length. dccp_xmit_packet: Payload too large (65423) for featneg. netlink: 'syz-executor6': attribute type 21 has an invalid length. netlink: 'syz-executor6': attribute type 1 has an invalid length. xt_CT: You must specify a L4 protocol, and not use inversions on it. TCP: request_sock_TCP: Possible SYN flooding on port 20018. Sending cookies. Check SNMP counters. xt_CT: You must specify a L4 protocol, and not use inversions on it. SELinux: unrecognized netlink message: protocol=4 nlmsg_type=25 sclass=netlink_tcpdiag_socket pig=9099 comm=syz-executor6 Protocol error: SET target dimension is over the limit! SELinux: unrecognized netlink message: protocol=4 nlmsg_type=25 sclass=netlink_tcpdiag_socket pig=9099 comm=syz-executor6 Protocol error: SET target dimension is over the limit! netlink: 'syz-executor7': attribute type 4 has an invalid length. netlink: 'syz-executor7': attribute type 4 has an invalid length. can: request_module (can-proto-6) failed. can: request_module (can-proto-6) failed. netlink: 'syz-executor1': attribute type 21 has an invalid length. TCP: request_sock_TCPv6: Possible SYN flooding on port 20014. Sending cookies. Check SNMP counters. kauditd_printk_skb: 4 callbacks suppressed audit: type=1400 audit(1517964381.077:57): avc: denied { map } for pid=9473 comm="syz-executor3" path="socket:[20308]" dev="sockfs" ino=20308 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=tcp_socket permissive=1 rdma_op 00000000ef2d2bc1 conn xmit_rdma (null) netlink: 'syz-executor2': attribute type 10 has an invalid length. netlink: 'syz-executor2': attribute type 10 has an invalid length. sctp: [Deprecated]: syz-executor7 (pid 9596) Use of int in max_burst socket option. Use struct sctp_assoc_value instead audit: type=1400 audit(1517964381.481:58): avc: denied { listen } for pid=9600 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_generic_socket permissive=1 sctp: [Deprecated]: syz-executor7 (pid 9596) Use of int in max_burst socket option. Use struct sctp_assoc_value instead xt_cgroup: invalid path, errno=-2 xt_cgroup: invalid path, errno=-2 xt_nfacct: accounting object with name `syz0' does not exists audit: type=1400 audit(1517964381.864:59): avc: denied { create } for pid=9750 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 netlink: 'syz-executor0': attribute type 21 has an invalid length. Cannot find del_set index 0 as target Cannot find del_set index 0 as target can: request_module (can-proto-4) failed.