======================================================
WARNING: possible circular locking dependency detected
4.15.0-rc9+ #213 Not tainted
------------------------------------------------------
syz-executor2/5241 is trying to acquire lock:
(sk_lock-AF_INET){+.+.}, at: [<0000000088f0fbf6>] lock_sock include/net/sock.h:1463 [inline]
(sk_lock-AF_INET){+.+.}, at: [<0000000088f0fbf6>] do_ip_getsockopt+0x1b3/0x2170 net/ipv4/ip_sockglue.c:1335
but task is already holding lock:
(rtnl_mutex){+.+.}, at: [<00000000f554af89>] 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:
-> #1 (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
register_netdevice_notifier+0xad/0x860 net/core/dev.c:1607
clusterip_config_init net/ipv4/netfilter/ipt_CLUSTERIP.c:261 [inline]
clusterip_tg_check+0xeb9/0x1570 net/ipv4/netfilter/ipt_CLUSTERIP.c:478
xt_check_target+0x22c/0x7d0 net/netfilter/x_tables.c:845
check_target net/ipv4/netfilter/ip_tables.c:518 [inline]
find_check_entry.isra.8+0x8c8/0xcb0 net/ipv4/netfilter/ip_tables.c:559
translate_table+0xed1/0x1610 net/ipv4/netfilter/ip_tables.c:730
do_replace net/ipv4/netfilter/ip_tables.c:1146 [inline]
do_ipt_set_ctl+0x370/0x5f0 net/ipv4/netfilter/ip_tables.c:1680
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115
ip_setsockopt+0xa1/0xb0 net/ipv4/ip_sockglue.c:1260
raw_setsockopt+0xb7/0xd0 net/ipv4/raw.c:870
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
-> #0 (sk_lock-AF_INET){+.+.}:
lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3914
lock_sock_nested+0xc2/0x110 net/core/sock.c:2780
lock_sock include/net/sock.h:1463 [inline]
do_ip_getsockopt+0x1b3/0x2170 net/ipv4/ip_sockglue.c:1335
ip_getsockopt+0x90/0x220 net/ipv4/ip_sockglue.c:1566
tcp_getsockopt+0x82/0xd0 net/ipv4/tcp.c:3326
sock_common_getsockopt+0x95/0xd0 net/core/sock.c:2937
SYSC_getsockopt net/socket.c:1880 [inline]
SyS_getsockopt+0x178/0x340 net/socket.c:1862
entry_SYSCALL_64_fastpath+0x29/0xa0
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(rtnl_mutex);
lock(sk_lock-AF_INET);
lock(rtnl_mutex);
lock(sk_lock-AF_INET);
*** DEADLOCK ***
1 lock held by syz-executor2/5241:
#0: (rtnl_mutex){+.+.}, at: [<00000000f554af89>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
stack backtrace:
CPU: 1 PID: 5241 Comm: syz-executor2 Not tainted 4.15.0-rc9+ #213
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.37+0x2cd/0x2dc kernel/locking/lockdep.c:1218
check_prev_add kernel/locking/lockdep.c:1858 [inline]
check_prevs_add kernel/locking/lockdep.c:1971 [inline]
validate_chain kernel/locking/lockdep.c:2412 [inline]
__lock_acquire+0x30a8/0x3e00 kernel/locking/lockdep.c:3426
lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3914
lock_sock_nested+0xc2/0x110 net/core/sock.c:2780
lock_sock include/net/sock.h:1463 [inline]
do_ip_getsockopt+0x1b3/0x2170 net/ipv4/ip_sockglue.c:1335
ip_getsockopt+0x90/0x220 net/ipv4/ip_sockglue.c:1566
tcp_getsockopt+0x82/0xd0 net/ipv4/tcp.c:3326
sock_common_getsockopt+0x95/0xd0 net/core/sock.c:2937
SYSC_getsockopt net/socket.c:1880 [inline]
SyS_getsockopt+0x178/0x340 net/socket.c:1862
entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007f6af15afc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000453299
RDX: 0000000000000029 RSI: 0000000000000000 RDI: 0000000000000013
RBP: 00000000000005d0 R08: 0000000020005ffc R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000212 R12: 00000000006f7c20
R13: 00000000ffffffff R14: 00007f6af15b06d4 R15: 0000000000000008
netlink: 11 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 11 bytes leftover after parsing attributes in process `syz-executor0'.
openvswitch: netlink: Message has 4 unknown bytes.
openvswitch: netlink: Message has 4 unknown bytes.
netlink: 'syz-executor0': attribute type 1 has an invalid length.
netlink: 'syz-executor0': attribute type 1 has an invalid length.
sock: sock_set_timeout: `syz-executor6' (pid 5673) tries to set negative timeout
raw_sendmsg: syz-executor7 forgot to set AF_INET. Fix it!
sctp: [Deprecated]: syz-executor5 (pid 5707) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor5 (pid 5707) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'.
xt_HMARK: hash modulus can't be zero
xt_HMARK: hash modulus can't be zero
sctp: [Deprecated]: syz-executor5 (pid 5994) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
can: request_module (can-proto-4) failed.
can: request_module (can-proto-4) failed.
sctp: [Deprecated]: syz-executor5 (pid 6007) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
netlink: 17 bytes leftover after parsing attributes in process `syz-executor2'.
Protocol error: SET target dimension is over the limit!
ipt_REJECT: TCP_RESET invalid for non-tcp
ipt_REJECT: TCP_RESET invalid for non-tcp
kauditd_printk_skb: 18 callbacks suppressed
audit: type=1400 audit(1517172092.674:40): avc: denied { map } for pid=6093 comm="syz-executor0" path="socket:[14773]" dev="sockfs" ino=14773 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
xt_l2tp: invalid flags combination: 0
xt_l2tp: invalid flags combination: 0
Cannot find set identified by id 0 to match
Cannot find set identified by id 0 to match
netlink: 'syz-executor0': attribute type 11 has an invalid length.
audit: type=1400 audit(1517172092.996:41): avc: denied { bind } for pid=6194 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
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=1025 sclass=netlink_xfrm_socket pig=6252 comm=syz-executor3
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=1025 sclass=netlink_xfrm_socket pig=6270 comm=syz-executor3
audit: type=1400 audit(1517172093.196:42): avc: denied { create } for pid=6275 comm="syz-executor1" 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(1517172093.198:43): avc: denied { write } for pid=6275 comm="syz-executor1" 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(1517172093.198:44): avc: denied { read } for pid=6275 comm="syz-executor1" 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
ieee80211 phy2: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy3: Selected rate control algorithm 'minstrel_ht'
xt_CT: You must specify a L4 protocol, and not use inversions on it.
RDS: rds_bind could not find a transport for 172.20.0.170, load rds_tcp or rds_rdma?
xt_CT: You must specify a L4 protocol, and not use inversions on it.
RDS: rds_bind could not find a transport for 172.20.0.170, load rds_tcp or rds_rdma?
netlink: 'syz-executor4': attribute type 16 has an invalid length.
bridge: RTM_NEWNEIGH with invalid state 0x0
bridge: RTM_NEWNEIGH with invalid state 0x0
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: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE
insert transport fail, errno -17
sctp: [Deprecated]: syz-executor5 (pid 6718) Use of int in max_burst socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor4 (pid 6736) Use of struct sctp_assoc_value in delayed_ack socket option.
Use struct sctp_sack_info instead
netlink: 'syz-executor7': attribute type 1 has an invalid length.
sctp: [Deprecated]: syz-executor5 (pid 6763) Use of int in max_burst socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor4 (pid 6767) Use of struct sctp_assoc_value in delayed_ack socket option.
Use struct sctp_sack_info instead
ipt_CLUSTERIP: Please specify destination IP
ipt_rpfilter: unknown options encountered
ip_tables: iptables: counters copy to user failed while replacing table
ipt_rpfilter: unknown options encountered
ipt_CLUSTERIP: Please specify destination IP
sctp: [Deprecated]: syz-executor5 (pid 6998) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor5 (pid 7018) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
dccp_close: ABORT with 254 bytes unread
netlink: 'syz-executor4': attribute type 1 has an invalid length.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor4'.
bpf: check failed: parse error
bpf: check failed: parse error
syz-executor2 (7176) used greatest stack depth: 11792 bytes left
audit: type=1400 audit(1517172095.971:45): avc: denied { map } for pid=7243 comm="syz-executor0" path="socket:[17709]" dev="sockfs" ino=17709 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: 3 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor5'.
sctp: [Deprecated]: syz-executor3 (pid 7368) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
xt_TPROXY: Can be used only in combination with either -p tcp or -p udp
ip_tables: iptables: counters copy to user failed while replacing table
xt_TPROXY: Can be used only in combination with either -p tcp or -p udp
sctp: [Deprecated]: syz-executor3 (pid 7373) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
audit: type=1400 audit(1517172096.333:46): avc: denied { getattr } for pid=7352 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_netfilter_socket permissive=1
netlink: 3 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor5'.
audit: type=1400 audit(1517172096.584:47): avc: denied { create } for pid=7459 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_rdma_socket permissive=1
netlink: 8 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor4'.
x_tables: ip_tables: .0 target: invalid size 8 (kernel) != (user) 3
can: request_module (can-proto-0) failed.
x_tables: ip_tables: .0 target: invalid size 8 (kernel) != (user) 3
device syz0 entered promiscuous mode
device syz0 left promiscuous mode
TCP: request_sock_TCP: Possible SYN flooding on port 20029. Sending cookies. Check SNMP counters.
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.
NFQUEUE: number of queues (8) out of range (got 65542)
NFQUEUE: number of queues (8) out of range (got 65542)
netlink: 300 bytes leftover after parsing attributes in process `syz-executor3'.
audit: type=1400 audit(1517172098.337:48): avc: denied { accept } for pid=8121 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_netfilter_socket permissive=1
netlink: 300 bytes leftover after parsing attributes in process `syz-executor3'.
netlink: 2 bytes leftover after parsing attributes in process `syz-executor2'.
TCP: request_sock_TCPv6: Possible SYN flooding on port 20030. Sending cookies. Check SNMP counters.
device lo entered promiscuous mode
netlink: 'syz-executor7': attribute type 21 has an invalid length.
Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable
Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable
x_tables: ip_tables: tcp match: only valid for protocol 6
openvswitch: netlink: Message has 4 unknown bytes.
openvswitch: netlink: Message has 4 unknown bytes.
device syz6 entered promiscuous mode
device syz6 left promiscuous mode
dccp_invalid_packet: P.Data Offset(0) too small
dccp_invalid_packet: P.Data Offset(0) too small