====================================================== WARNING: possible circular locking dependency detected 4.15.0+ #290 Not tainted ------------------------------------------------------ syz-executor7/18557 is trying to acquire lock: (rtnl_mutex){+.+.}, at: [<000000002f33b414>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 but task is already holding lock: (sk_lock-AF_INET){+.+.}, at: [<00000000e10e3fd5>] lock_sock include/net/sock.h:1461 [inline] (sk_lock-AF_INET){+.+.}, at: [<00000000e10e3fd5>] ip_setsockopt+0x8c/0xb0 net/ipv4/ip_sockglue.c:1259 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (sk_lock-AF_INET){+.+.}: lock_sock_nested+0xc2/0x110 net/core/sock.c:2780 lock_sock include/net/sock.h:1461 [inline] do_ip_setsockopt.isra.12+0x1d9/0x3210 net/ipv4/ip_sockglue.c:646 ip_setsockopt+0x3a/0xb0 net/ipv4/ip_sockglue.c:1252 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2905 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 (rtnl_mutex){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3920 __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 tee_tg_check+0x1a0/0x280 net/netfilter/xt_TEE.c:106 xt_check_target+0x22c/0x7d0 net/netfilter/x_tables.c:845 check_target net/ipv4/netfilter/ip_tables.c:513 [inline] find_check_entry.isra.8+0x8c8/0xcb0 net/ipv4/netfilter/ip_tables.c:554 translate_table+0xed1/0x1610 net/ipv4/netfilter/ip_tables.c:725 do_replace net/ipv4/netfilter/ip_tables.c:1141 [inline] do_ipt_set_ctl+0x370/0x5f0 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+0xa1/0xb0 net/ipv4/ip_sockglue.c:1260 udp_setsockopt+0x45/0x80 net/ipv4/udp.c:2401 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 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sk_lock-AF_INET); lock(rtnl_mutex); lock(sk_lock-AF_INET); lock(rtnl_mutex); *** DEADLOCK *** 1 lock held by syz-executor7/18557: #0: (sk_lock-AF_INET){+.+.}, at: [<00000000e10e3fd5>] lock_sock include/net/sock.h:1461 [inline] #0: (sk_lock-AF_INET){+.+.}, at: [<00000000e10e3fd5>] ip_setsockopt+0x8c/0xb0 net/ipv4/ip_sockglue.c:1259 stack backtrace: CPU: 1 PID: 18557 Comm: syz-executor7 Not tainted 4.15.0+ #290 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 __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 tee_tg_check+0x1a0/0x280 net/netfilter/xt_TEE.c:106 xt_check_target+0x22c/0x7d0 net/netfilter/x_tables.c:845 check_target net/ipv4/netfilter/ip_tables.c:513 [inline] find_check_entry.isra.8+0x8c8/0xcb0 net/ipv4/netfilter/ip_tables.c:554 translate_table+0xed1/0x1610 net/ipv4/netfilter/ip_tables.c:725 do_replace net/ipv4/netfilter/ip_tables.c:1141 [inline] do_ipt_set_ctl+0x370/0x5f0 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+0xa1/0xb0 net/ipv4/ip_sockglue.c:1260 udp_setsockopt+0x45/0x80 net/ipv4/udp.c:2401 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 RIP: 0033:0x453299 RSP: 002b:00007f39de73ec58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299 RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000013 RBP: 00000000000005c4 R08: 00000000000002e0 R09: 0000000000000000 R10: 000000002002ccf8 R11: 0000000000000212 R12: 00000000006f7b00 R13: 00000000ffffffff R14: 00007f39de73f6d4 R15: 0000000000000000 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2207 sclass=netlink_route_socket pig=18563 comm=syz-executor2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2207 sclass=netlink_route_socket pig=18563 comm=syz-executor2 audit: audit_backlog=65 > audit_backlog_limit=64 audit: audit_lost=139 audit_rate_limit=0 audit_backlog_limit=64 audit: backlog limit exceeded audit: audit_backlog=65 > audit_backlog_limit=64 audit: audit_lost=140 audit_rate_limit=0 audit_backlog_limit=64 binder: 18630:18642 Release 1 refcount change on invalid ref 0 ret -22 binder_alloc: binder_alloc_mmap_handler: 18630 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 18630:18660 ioctl 40046207 0 returned -16 binder_alloc: 18630: binder_alloc_buf, no vma binder: 18630:18653 transaction failed 29189/-3, size 40-8 line 2903 binder_alloc: 18630: binder_alloc_buf, no vma binder: 18630:18660 transaction failed 29189/-3, size 40-0 line 2903 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 18630:18642 transaction 94 out, still active binder: send failed reply for transaction 94, target dead binder: undelivered transaction 97, process died. netlink: 8 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor6'. TCP: request_sock_TCP: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. sit: non-ECT from 0.0.0.0 with TOS=0x3 Dead loop on virtual device ip6_vti0, fix it urgently! l2tp_core: tunl 1: fd 19 wrong protocol, got 1, expected 17 l2tp_core: tunl 1: fd 19 wrong protocol, got 1, expected 17 NFQUEUE: number of total queues is 0 NFQUEUE: number of total queues is 0 binder: 19046 RLIMIT_NICE not set binder: 19046 RLIMIT_NICE not set binder: release 19039:19046 transaction 101 in, still active binder: send failed reply for transaction 101 to 19039:19063 binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29189 binder: 19093 RLIMIT_NICE not set binder: 19093 RLIMIT_NICE not set binder: release 19086:19093 transaction 103 in, still active binder: send failed reply for transaction 103 to 19086:19117 binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29189 binder: 19143 RLIMIT_NICE not set binder: 19143 RLIMIT_NICE not set binder: release 19141:19143 transaction 105 in, still active binder: send failed reply for transaction 105 to 19141:19172 binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29189 binder: 19244:19249 BC_ACQUIRE_DONE node 106 has no pending acquire request binder: BINDER_SET_CONTEXT_MGR already set binder: 19244:19264 BC_ACQUIRE_DONE u0000000000000000 no match binder: 19244:19261 ioctl 40046207 0 returned -16 kauditd_printk_skb: 883 callbacks suppressed audit: type=1400 audit(1517487331.428:12808): avc: denied { net_raw } for pid=19279 comm="syz-executor5" capability=13 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(1517487331.457:12809): avc: denied { net_admin } for pid=4102 comm="syz-executor7" 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 binder: 19296 RLIMIT_NICE not set binder: 19296 RLIMIT_NICE not set binder: release 19294:19296 transaction 109 out, still active binder: release 19294:19296 transaction 108 in, still active binder: undelivered TRANSACTION_COMPLETE binder: 19300 RLIMIT_NICE not set binder: BINDER_SET_CONTEXT_MGR already set binder: 19294:19296 ioctl 40046207 0 returned -16 binder_alloc: 19294: binder_alloc_buf, no vma binder: 19294:19296 transaction failed 29189/-3, size 0-0 line 2903 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 19294:19300 transaction 108 out, still active binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 109, target dead binder: send failed reply for transaction 108, target dead audit: type=1400 audit(1517487331.462:12810): avc: denied { net_raw } for pid=19279 comm="syz-executor5" capability=13 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(1517487331.462:12811): avc: denied { map } for pid=19294 comm="syz-executor7" path="/dev/binder0" dev="devtmpfs" ino=1093 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:device_t:s0 tclass=chr_file permissive=1 audit: type=1400 audit(1517487331.462:12812): avc: denied { set_context_mgr } for pid=19294 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=binder permissive=1 audit: type=1400 audit(1517487331.487:12813): avc: denied { net_admin } for pid=4110 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(1517487331.488:12814): avc: denied { net_admin } for pid=4110 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(1517487331.493:12816): avc: denied { net_admin } for pid=4114 comm="syz-executor6" 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(1517487331.493:12815): avc: denied { net_admin } for pid=4104 comm="syz-executor2" 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(1517487331.500:12817): avc: denied { net_admin } for pid=4110 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 sctp: [Deprecated]: syz-executor4 (pid 19329) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor4 (pid 19339) Use of int in maxseg socket option. Use struct sctp_assoc_value instead IPv4: Oversized IP packet from 127.0.0.1 can: request_module (can-proto-0) failed. can: request_module (can-proto-0) failed. QAT: Invalid ioctl binder: 19587:19589 Release 1 refcount change on invalid ref 0 ret -22 binder: BINDER_SET_CONTEXT_MGR already set binder_alloc: 19587: binder_alloc_buf, no vma binder: 19587:19589 ioctl 40046207 0 returned -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 19612:19614 ioctl 40046207 0 returned -16 binder: 19612:19614 Acquire 1 refcount change on invalid ref 0 ret -22 binder: 19606:19617 got reply transaction with no transaction stack binder: 19606:19617 transaction failed 29201/-71, size 0-0 line 2703 binder: 19612:19614 BC_REQUEST_DEATH_NOTIFICATION invalid ref 0 binder: 19612:19614 BC_CLEAR_DEATH_NOTIFICATION invalid ref 0 binder: 19614 RLIMIT_NICE not set binder: 19612:19614 ioctl c0306201 20006fd0 returned -11 binder: BINDER_SET_CONTEXT_MGR already set binder: 19612:19626 ioctl 40046207 0 returned -16 binder: 19606:19627 got reply transaction with no transaction stack binder: 19606:19627 transaction failed 29201/-71, size 0-0 line 2703 binder: 19612:19626 Acquire 1 refcount change on invalid ref 0 ret -22 binder: 19612:19614 BC_REQUEST_DEATH_NOTIFICATION invalid ref 0 binder: 19612:19626 BC_CLEAR_DEATH_NOTIFICATION invalid ref 0 binder: 19626 RLIMIT_NICE not set binder: 19612:19626 ioctl c0306201 20006fd0 returned -11 binder: 19587:19605 transaction failed 29189/-3, size 40-8 line 2903 binder_alloc: 19587: binder_alloc_buf, no vma binder: 19587:19610 transaction failed 29189/-3, size 40-0 line 2903 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 19587:19589 transaction 112 out, still active binder: send failed reply for transaction 112, target dead binder: undelivered transaction 115, process died. binder: send failed reply for transaction 121 to 19648:19660 binder: 19648:19670 BC_INCREFS_DONE node 122 has no pending increfs request binder: send failed reply for transaction 125 to 19648:19660 ------------[ cut here ]------------ Unexpected reply error: 29189 WARNING: CPU: 1 PID: 4835 at drivers/android/binder.c:1937 binder_send_failed_reply+0x13b/0x350 drivers/android/binder.c:1936