TCP: request_sock_TCPv6: Possible SYN flooding on port 20030. Sending cookies. Check SNMP counters. ====================================================== WARNING: possible circular locking dependency detected 4.15.0+ #290 Not tainted ------------------------------------------------------ syz-executor0/14336 is trying to acquire lock: (rtnl_mutex){+.+.}, at: [<000000002f7931df>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 but task is already holding lock: (sk_lock-AF_INET){+.+.}, at: [<0000000052ec92df>] lock_sock include/net/sock.h:1461 [inline] (sk_lock-AF_INET){+.+.}, at: [<0000000052ec92df>] 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-executor0/14336: #0: (sk_lock-AF_INET){+.+.}, at: [<0000000052ec92df>] lock_sock include/net/sock.h:1461 [inline] #0: (sk_lock-AF_INET){+.+.}, at: [<0000000052ec92df>] ip_setsockopt+0x8c/0xb0 net/ipv4/ip_sockglue.c:1259 stack backtrace: CPU: 1 PID: 14336 Comm: syz-executor0 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:00007f22a6a4bc58 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: 00007f22a6a4c6d4 R15: 0000000000000000 Protocol error: SET target dimension is over the limit! kauditd_printk_skb: 37 callbacks suppressed audit: type=1400 audit(1517486022.543:615): avc: denied { sys_chroot } for pid=14439 comm="syz-executor2" capability=18 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 dccp_close: ABORT with 2 bytes unread QAT: Invalid ioctl QAT: Invalid ioctl audit: type=1400 audit(1517486023.245:616): avc: denied { map } for pid=14608 comm="syz-executor7" path="/dev/audio" dev="devtmpfs" ino=1120 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=1326 audit(1517486023.456:617): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14649 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517486023.492:618): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14649 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=191 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517486023.493:619): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14649 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517486023.493:620): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14649 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517486023.495:621): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14649 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=43 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517486023.496:622): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14649 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517486023.496:623): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14649 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517486023.502:624): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14649 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=16 compat=0 ip=0x453299 code=0x7ffc0000 binder: BINDER_SET_CONTEXT_MGR already set QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl binder: 14678:14715 Release 1 refcount change on invalid ref 0 ret -22 binder: 14678:14685 ioctl 40046207 0 returned -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 14678:14692 ioctl 40046207 0 returned -16 QAT: Invalid ioctl xt_CT: You must specify a L4 protocol, and not use inversions on it. sctp: [Deprecated]: syz-executor7 (pid 15041) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead xt_CT: You must specify a L4 protocol, and not use inversions on it. sock: sock_set_timeout: `syz-executor1' (pid 15138) tries to set negative timeout sock: sock_set_timeout: `syz-executor1' (pid 15138) tries to set negative timeout binder: send failed reply for transaction 72 to 15173:15181 binder: 15173:15181 ioctl c018aa3f 20a1c000 returned -22 binder: 15173:15181 transaction failed 29189/-22, size 40-8 line 2788 binder: 15173:15181 ioctl c0306201 20008000 returned -14 binder: 15173:15194 ioctl c018aa3f 20a1c000 returned -22 binder: 15173:15202 BC_INCREFS_DONE node 73 has no pending increfs request binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29189 binder: 15241:15243 ERROR: BC_REGISTER_LOOPER called without request binder: BINDER_SET_CONTEXT_MGR already set binder: 15241:15248 ioctl 40046207 0 returned -16 binder: 15241:15248 ERROR: BC_REGISTER_LOOPER called without request binder_alloc: 15241: binder_alloc_buf, no vma binder: 15241:15248 transaction failed 29189/-3, size 0-0 line 2903 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 15241:15243 transaction 78 out, still active binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 78, target dead xt_limit: Overflow, try lower: 0/0 xt_limit: Overflow, try lower: 0/0 device eql entered promiscuous mode binder: 15367:15370 transaction failed 29189/-22, size 0-0 line 2788 kauditd_printk_skb: 125 callbacks suppressed audit: type=1400 audit(1517486027.886:750): avc: denied { map } for pid=15384 comm="syz-executor2" path=2F6D656D66643A73656C662B65746831A4707031202864656C6574656429 dev="tmpfs" ino=56789 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:tmpfs_t:s0 tclass=file permissive=1 binder: 15367:15388 transaction failed 29189/-22, size 0-0 line 2788 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. audit: type=1400 audit(1517486028.021:751): avc: denied { map } for pid=15407 comm="syz-executor2" path="/373/file0/bus" dev="ramfs" ino=56044 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:ramfs_t:s0 tclass=file permissive=1 QAT: Invalid ioctl QAT: Invalid ioctl audit: type=1401 audit(1517486028.633:752): op=setxattr invalid_context="/dev/qat_adf_ctl" QAT: Invalid ioctl QAT: Invalid ioctl audit: type=1401 audit(1517486028.652:753): op=setxattr invalid_context="/dev/qat_adf_ctl" netlink: 'syz-executor1': attribute type 21 has an invalid length. netlink: 'syz-executor1': attribute type 21 has an invalid length. device eql entered promiscuous mode audit: type=1400 audit(1517486030.005:754): avc: denied { create } for pid=15610 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_iscsi_socket permissive=1 audit: type=1326 audit(1517486030.565:755): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15641 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517486030.602:756): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15641 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=257 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517486030.628:757): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15641 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 sock: sock_set_timeout: `syz-executor0' (pid 15648) tries to set negative timeout audit: type=1326 audit(1517486030.628:758): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15641 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517486030.636:759): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15641 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=257 compat=0 ip=0x453299 code=0x7ffc0000 sock: sock_set_timeout: `syz-executor0' (pid 15686) tries to set negative timeout IPVS: ftp: loaded support on port[0] = 21