mmap: syz-executor0 (5620) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.txt. ====================================================== WARNING: possible circular locking dependency detected 4.16.0-rc1+ #315 Not tainted ------------------------------------------------------ syz-executor1/5619 is trying to acquire lock: (sk_lock-AF_INET6){+.+.}, at: [<0000000042992918>] lock_sock include/net/sock.h:1463 [inline] (sk_lock-AF_INET6){+.+.}, at: [<0000000042992918>] do_ipv6_setsockopt.isra.8+0x3c5/0x39d0 net/ipv6/ipv6_sockglue.c:167 but task is already holding lock: (rtnl_mutex){+.+.}, at: [<0000000085f4d98a>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=24 sclass=netlink_tcpdiag_socket pig=5624 comm=syz-executor4 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 tee_tg_destroy+0x61/0xc0 net/netfilter/xt_TEE.c:123 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 raw_setsockopt+0xb7/0xd0 net/ipv4/raw.c:870 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 do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 -> #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:1046 xt_request_find_table_lock+0x28/0xc0 net/netfilter/x_tables.c:1093 get_info+0x154/0x690 net/ipv6/netfilter/ip6_tables.c:989 do_ip6t_get_ctl+0x159/0xaf0 net/ipv6/netfilter/ip6_tables.c:1710 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x6a/0xc0 net/netfilter/nf_sockopt.c:122 ipv6_getsockopt+0x1df/0x2e0 net/ipv6/ipv6_sockglue.c:1371 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 do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 -> #0 (sk_lock-AF_INET6){+.+.}: 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_ipv6_setsockopt.isra.8+0x3c5/0x39d0 net/ipv6/ipv6_sockglue.c:167 ipv6_setsockopt+0xd7/0x130 net/ipv6/ipv6_sockglue.c:922 udpv6_setsockopt+0x45/0x80 net/ipv6/udp.c:1422 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 do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 other info that might help us debug this: Chain exists of: sk_lock-AF_INET6 --> &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_INET6); *** DEADLOCK *** 1 lock held by syz-executor1/5619: #0: (rtnl_mutex){+.+.}, at: [<0000000085f4d98a>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 stack backtrace: CPU: 1 PID: 5619 Comm: syz-executor1 Not tainted 4.16.0-rc1+ #315 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_ipv6_setsockopt.isra.8+0x3c5/0x39d0 net/ipv6/ipv6_sockglue.c:167 ipv6_setsockopt+0xd7/0x130 net/ipv6/ipv6_sockglue.c:922 udpv6_setsockopt+0x45/0x80 net/ipv6/udp.c:1422 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 do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x453a59 RSP: 002b:00007f6762e1dc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f6762e1e6d4 RCX: 0000000000453a59 RDX: 000000000000002e RSI: 0000000000000029 RDI: 0000000000000014 RBP: 000000000071bea0 R08: 0000000000000108 R09: 0000000000000000 R10: 0000000020001000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000506 R14: 00000000006f7930 R15: 0000000000000000 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=24 sclass=netlink_tcpdiag_socket pig=5624 comm=syz-executor4 audit: type=1400 audit(1518823588.282:27): avc: denied { setuid } for pid=5639 comm="syz-executor2" capability=7 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 rfkill: input handler disabled rfkill: input handler enabled QAT: Invalid ioctl QAT: Invalid ioctl audit: type=1400 audit(1518823588.508:28): avc: denied { name_bind } for pid=5706 comm="syz-executor1" src=20007 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:port_t:s0 tclass=dccp_socket permissive=1 audit: type=1400 audit(1518823588.508:29): avc: denied { node_bind } for pid=5706 comm="syz-executor1" src=20007 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:node_t:s0 tclass=dccp_socket permissive=1 audit: type=1400 audit(1518823588.509:30): avc: denied { name_connect } for pid=5706 comm="syz-executor1" dest=20007 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:port_t:s0 tclass=dccp_socket permissive=1 syz-executor1 uses obsolete (PF_INET,SOCK_PACKET) xt_DSCP: dscp fc out of range device syz1 entered promiscuous mode xt_DSCP: dscp fc out of range device syz1 left promiscuous mode device syz1 entered promiscuous mode 9pnet_virtio: no channels available for device ./file0 9pnet_virtio: no channels available for device ./file0 audit: type=1400 audit(1518823588.950:31): avc: denied { net_bind_service } for pid=5826 comm="syz-executor3" capability=10 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(1518823589.030:32): avc: denied { map } for pid=5857 comm="syz-executor0" path="/dev/loop0" dev="devtmpfs" ino=1111 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:fixed_disk_device_t:s0 tclass=blk_file permissive=1 audit: type=1400 audit(1518823589.228:33): avc: denied { ipc_lock } for pid=5905 comm="syz-executor1" capability=14 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 ieee80211 phy2: Selected rate control algorithm 'minstrel_ht' ieee80211 phy3: Selected rate control algorithm 'minstrel_ht' SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6068 comm=syz-executor3 binder: 6071 RLIMIT_NICE not set QAT: Invalid ioctl QAT: Invalid ioctl binder: 6063:6076 tried to acquire reference to desc 0, got 1 instead QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl binder: 6063:6088 BC_CLEAR_DEATH_NOTIFICATION invalid ref 0 QAT: Invalid ioctl binder: 6088 RLIMIT_NICE not set binder: 6063:6071 unknown command 536907575 binder: 6063:6071 ioctl c0306201 20008fd0 returned -22 Cannot find set identified by id 0 to match QAT: Invalid ioctl binder: undelivered death notification, 0000000000000000 QAT: Invalid ioctl Cannot find set identified by id 0 to match QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl PPPIOCDETACH file->f_count=2 IPv6 header not found IPv6 header not found 9pnet_virtio: no channels available for device ./file0 9pnet_virtio: no channels available for device ./file0 QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl ptrace attach of "/root/syz-executor3"[4212] was attempted by "/root/syz-executor3"[6509] ptrace attach of "/root/syz-executor3"[4212] was attempted by "/root/syz-executor3"[6517] device syz1 left promiscuous mode sock: process `syz-executor5' is using obsolete getsockopt SO_BSDCOMPAT kauditd_printk_skb: 8 callbacks suppressed audit: type=1400 audit(1518823591.857:42): avc: denied { map_read map_write } for pid=6623 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=bpf permissive=1 audit: type=1400 audit(1518823591.858:43): avc: denied { setfcap } for pid=6614 comm="syz-executor4" capability=31 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(1518823591.870:44): avc: denied { map } for pid=6625 comm="syz-executor0" path="/dev/sg0" dev="devtmpfs" ino=1120 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:scsi_generic_device_t:s0 tclass=chr_file permissive=1 device eql entered promiscuous mode sock: process `syz-executor4' is using obsolete setsockopt SO_BSDCOMPAT netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. binder: 6870:6876 ioctl c0306201 20ff7000 returned -14 netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. audit: type=1400 audit(1518823592.840:45): avc: denied { net_admin } for pid=4216 comm="syz-executor5" capability=12 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(1518823592.881:46): avc: denied { map } for pid=6921 comm="modprobe" path="/bin/kmod" dev="sda1" ino=1440 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1518823592.908:47): avc: denied { net_admin } for pid=4208 comm="syz-executor1" capability=12 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(1518823592.964:48): avc: denied { create } for pid=6925 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 audit: type=1400 audit(1518823592.972:49): avc: denied { setopt } for pid=6925 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 audit: type=1400 audit(1518823592.989:50): avc: denied { bind } for pid=6925 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 audit: type=1400 audit(1518823593.046:51): avc: denied { map } for pid=6940 comm="syz-executor3" path=2F6D656D66643A2F7B06202864656C6574656429 dev="tmpfs" ino=18814 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:tmpfs_t:s0 tclass=file permissive=1 netlink: 28 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor5'. xt_connbytes: Forcing CT accounting to be enabled xprt_adjust_timeout: rq_timeout = 0! openvswitch: netlink: Either Ethernet header or EtherType is required. Cannot find add_set index 0 as target xprt_adjust_timeout: rq_timeout = 0! Cannot find add_set index 0 as target ip6t_srh: unknown srh invflags FFFE ip6t_srh: unknown srh invflags FFFE NFQUEUE: number of total queues is 0 xt_hashlimit: overflow, try lower: 0/0 xt_hashlimit: overflow, try lower: 0/0 NFQUEUE: number of total queues is 0 QAT: Invalid ioctl QAT: Invalid ioctl TCP: request_sock_TCP: Possible SYN flooding on port 20029. Sending cookies. Check SNMP counters. netlink: 'syz-executor5': attribute type 1 has an invalid length. netlink: 'syz-executor5': attribute type 1 has an invalid length. QAT: Device 2 not found QAT: Device 2 not found device eql entered promiscuous mode ptrace attach of "/root/syz-executor5"[4216] was attempted by "/root/syz-executor5"[7908] xt_connbytes: Forcing CT accounting to be enabled netlink: 'syz-executor7': attribute type 1 has an invalid length. ip6t_srh: unknown srh invflags FFFE ip6t_srh: unknown srh invflags FFFE SELinux: unrecognized netlink message: protocol=4 nlmsg_type=41291 sclass=netlink_tcpdiag_socket pig=8213 comm=syz-executor5 xt_connbytes: Forcing CT accounting to be enabled CUSE: DEVNAME unspecified kauditd_printk_skb: 26 callbacks suppressed audit: type=1400 audit(1518823597.433:78): avc: denied { getrlimit } for pid=8363 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=process permissive=1