mmap: syz-executor0 (5900) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.txt. ====================================================== WARNING: possible circular locking dependency detected 4.16.0-rc2+ #326 Not tainted ------------------------------------------------------ syz-executor3/5922 is trying to acquire lock: (sk_lock-AF_INET){+.+.}, at: [<00000000eedb040d>] lock_sock include/net/sock.h:1463 [inline] (sk_lock-AF_INET){+.+.}, at: [<00000000eedb040d>] do_ip_getsockopt+0x1b3/0x2170 net/ipv4/ip_sockglue.c:1329 but task is already holding lock: (rtnl_mutex){+.+.}, at: [<000000006240563f>] 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 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_arpt_get_ctl+0x2a9/0xa00 net/ipv4/netfilter/arp_tables.c:1481 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 do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 -> #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_getsockopt+0x1b3/0x2170 net/ipv4/ip_sockglue.c:1329 ip_getsockopt+0x90/0x220 net/ipv4/ip_sockglue.c:1560 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 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-executor3/5922: #0: (rtnl_mutex){+.+.}, at: [<000000006240563f>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 stack backtrace: CPU: 0 PID: 5922 Comm: syz-executor3 Not tainted 4.16.0-rc2+ #326 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+0x194/0x24d 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_getsockopt+0x1b3/0x2170 net/ipv4/ip_sockglue.c:1329 ip_getsockopt+0x90/0x220 net/ipv4/ip_sockglue.c:1560 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 RIP: 0033:0x453de9 RSP: 002b:00007ff5d6077c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ff5d60786d4 RCX: 0000000000453de9 RDX: 0000000000000029 RSI: 0000000000000000 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000020745000 R09: 0000000000000000 R10: 0000000020000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000000f2 R14: 00000000006f1750 R15: 0000000000000000 syz-executor2 uses obsolete (PF_INET,SOCK_PACKET) device eql entered promiscuous mode TCP: request_sock_TCP: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. device eql entered promiscuous mode QAT: Invalid ioctl QAT: Invalid ioctl device eql entered promiscuous mode SELinux: unrecognized netlink message: protocol=4 nlmsg_type=24 sclass=netlink_tcpdiag_socket pig=6485 comm=syz-executor1 QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl Disabled LAPIC found during irq injection QAT: Invalid ioctl ipt_CLUSTERIP: no config found for 255.255.255.255, need 'new' ipt_CLUSTERIP: no config found for 255.255.255.255, need 'new' binder: 6713:6720 ioctl c0306201 2000a000 returned -14 kauditd_printk_skb: 24 callbacks suppressed audit: type=1400 audit(1519442545.164:46): avc: denied { setopt } for pid=6709 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 binder_alloc: binder_alloc_mmap_handler: 6713 20000000-20002000 already mapped failed -16 audit: type=1400 audit(1519442545.175:47): avc: denied { call } for pid=6713 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=binder permissive=1 binder: BINDER_SET_CONTEXT_MGR already set binder: 6713:6720 ioctl 40046207 0 returned -16 binder: 6713:6720 unknown command 0 binder_alloc: 6713: binder_alloc_buf, no vma binder: 6713:6728 transaction failed 29189/-3, size 0-0 line 2963 binder: 6713:6720 ioctl c0306201 2000a000 returned -22 binder: send failed reply for transaction 6 to 6713:6720 binder: undelivered TRANSACTION_ERROR: 29189 audit: type=1400 audit(1519442545.349:48): avc: denied { setuid } for pid=6764 comm="syz-executor4" 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 binder: 6770:6773 BC_FREE_BUFFER u0000000000000000 no match binder: 6770:6773 DecRefs 0 refcount change on invalid ref 4 ret -22 binder: 6770:6773 BC_DEAD_BINDER_DONE 0000000000000000 not found binder: 6773 RLIMIT_NICE not set audit: type=1400 audit(1519442545.413:49): avc: denied { transfer } for pid=6770 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=binder permissive=1 binder: 6770:6797 ioctl c018620b 20000000 returned -14 binder: 6770:6790 ioctl c0306201 20000100 returned -14 binder_alloc: binder_alloc_mmap_handler: 6770 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 6770:6790 ioctl 40046207 0 returned -16 binder_alloc: 6770: binder_alloc_buf, no vma binder: 6770:6813 transaction failed 29189/-3, size 40-8 line 2963 binder: 6770:6773 ioctl c0306201 20000100 returned -14 binder: send failed reply for transaction 9 to 6770:6790 binder: undelivered TRANSACTION_ERROR: 29189 device eql entered promiscuous mode net_ratelimit: 10 callbacks suppressed xt_hashlimit: max count of 1 reached xt_hashlimit: max count of 1 reached audit: type=1400 audit(1519442546.035:50): avc: denied { map } for pid=6996 comm="syz-executor4" path="socket:[19149]" dev="sockfs" ino=19149 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=key_socket permissive=1 syz-executor7 (7004) used greatest stack depth: 13984 bytes left audit: type=1400 audit(1519442546.273:51): avc: denied { map } for pid=7071 comm="syz-executor5" path="/dev/sg0" dev="devtmpfs" ino=91 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 kernel msg: ebtables bug: please report to author: entries_size too small kernel msg: ebtables bug: please report to author: entries_size too small audit: type=1400 audit(1519442547.075:52): avc: denied { setattr } for pid=7377 comm="syz-executor2" name="fdinfo" dev="proc" ino=20269 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=dir permissive=1 audit: type=1400 audit(1519442547.199:53): avc: denied { map } for pid=7429 comm="syz-executor0" path="/dev/snd/pcmC0D0p" dev="devtmpfs" ino=9558 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:sound_device_t:s0 tclass=chr_file permissive=1 audit: type=1400 audit(1519442547.320:54): avc: denied { read } for pid=7477 comm="syz-executor0" path="socket:[20900]" dev="sockfs" ino=20900 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 TCP: request_sock_TCP: Possible SYN flooding on port 20026. Sending cookies. Check SNMP counters. xt_connbytes: Forcing CT accounting to be enabled x_tables: ip6_tables: TCPMSS target: only valid for protocol 6 xt_connbytes: Forcing CT accounting to be enabled x_tables: ip6_tables: TCPMSS target: only valid for protocol 6 xt_limit: Overflow, try lower: 2147483648/50 xt_limit: Overflow, try lower: 2147483648/50 netlink: 'syz-executor3': attribute type 21 has an invalid length. netlink: 'syz-executor3': attribute type 21 has an invalid length.