syz-executor0 uses obsolete (PF_INET,SOCK_PACKET) ====================================================== WARNING: possible circular locking dependency detected 4.15.0+ #292 Not tainted ------------------------------------------------------ syz-executor1/6016 is trying to acquire lock: (sk_lock-AF_INET){+.+.}, at: [<00000000ecec1161>] lock_sock include/net/sock.h:1461 [inline] (sk_lock-AF_INET){+.+.}, at: [<00000000ecec1161>] do_ip_setsockopt.isra.12+0x1d9/0x3210 net/ipv4/ip_sockglue.c:646 but task is already holding lock: (rtnl_mutex){+.+.}, at: [<0000000055245497>] 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 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 sctp_setsockopt+0x2b6/0x61d0 net/sctp/socket.c:4104 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:3920 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 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-executor1/6016: #0: (rtnl_mutex){+.+.}, at: [<0000000055245497>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 stack backtrace: CPU: 1 PID: 6016 Comm: syz-executor1 Not tainted 4.15.0+ #292 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: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 RIP: 0033:0x453299 RSP: 002b:00007f7bc5ae9c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299 RDX: 000000000000002a RSI: 0000000000000000 RDI: 0000000000000013 RBP: 0000000000000582 R08: 0000000000000090 R09: 0000000000000000 R10: 0000000020ea4f70 R11: 0000000000000212 R12: 00000000006f74d0 R13: 00000000ffffffff R14: 00007f7bc5aea6d4 R15: 0000000000000000 TCP: request_sock_TCP: Possible SYN flooding on port 20006. Sending cookies. Check SNMP counters. kauditd_printk_skb: 21 callbacks suppressed audit: type=1400 audit(1517586855.276:47): avc: denied { net_broadcast } for pid=6098 comm="syz-executor2" capability=11 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=1326 audit(1517586855.329:48): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6100 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 QAT: Invalid ioctl QAT: Invalid ioctl audit: type=1400 audit(1517586856.183:49): avc: denied { ioctl } for pid=6222 comm="syz-executor2" path="socket:[16828]" dev="sockfs" ino=16828 ioctlcmd=0x89a0 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(1517586856.184:50): avc: denied { ipc_lock } for pid=6218 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 audit: type=1400 audit(1517586856.419:51): avc: denied { map } for pid=6290 comm="syz-executor5" path=2F6D656D66643A6370757365746367726F75702D202864656C6574656429 dev="tmpfs" ino=16091 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:tmpfs_t:s0 tclass=file permissive=1 audit: type=1326 audit(1517586857.031:52): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6334 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517586857.034:53): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6334 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=2 compat=0 ip=0x40d591 code=0x7ffc0000 audit: type=1326 audit(1517586857.034:54): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6334 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517586857.037:55): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6334 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=303 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517586857.037:56): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6334 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 device eql entered promiscuous mode x86/PAT: syz-executor0:6600 map pfn RAM range req write-combining for [mem 0x1cd900000-0x1cd901fff], got write-back binder: release 6602:6606 transaction 2 out, still active binder: unexpected work type, 4, not freed binder: undelivered TRANSACTION_COMPLETE binder: invalid inc weak node for 3 binder: 6602:6606 IncRefs 0 refcount change on invalid ref 1 ret -22 x86/PAT: syz-executor0:6600 map pfn RAM range req write-combining for [mem 0x1ab230000-0x1ab231fff], got write-back binder: BINDER_SET_CONTEXT_MGR already set binder: 6602:6630 ioctl 40046207 0 returned -16 binder_alloc: 6602: binder_alloc_buf, no vma binder: 6602:6606 transaction failed 29189/-3, size 40-8 line 2957 binder: undelivered TRANSACTION_ERROR: 29189 binder: send failed reply for transaction 2, target dead device bridge0 entered promiscuous mode device bridge0 left promiscuous mode QAT: Invalid ioctl QAT: Invalid ioctl FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 xt_hashlimit: hashlimit invalid rate CPU: 1 PID: 6773 Comm: syz-executor3 Not tainted 4.15.0+ #292 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 xt_hashlimit: hashlimit invalid rate Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc_node mm/slab.c:3285 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3628 __alloc_skb+0xf1/0x780 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:983 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1180 [inline] netlink_sendmsg+0xa86/0xe60 net/netlink/af_netlink.c:1872 sock_sendmsg_nosec net/socket.c:630 [inline] sock_sendmsg+0xca/0x110 net/socket.c:640 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2046 __sys_sendmsg+0xe5/0x210 net/socket.c:2080 SYSC_sendmsg net/socket.c:2091 [inline] SyS_sendmsg+0x2d/0x50 net/socket.c:2087 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f3b525d2c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f3b525d2aa0 RCX: 0000000000453299 RDX: 0000000000000000 RSI: 0000000020fde000 RDI: 0000000000000013 RBP: 00007f3b525d2a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b8096 R13: 00007f3b525d2bc8 R14: 00000000004b8096 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 6813 Comm: syz-executor3 Not tainted 4.15.0+ #292 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 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc_node mm/slab.c:3285 [inline] kmem_cache_alloc_node_trace+0x5a/0x750 mm/slab.c:3647 __do_kmalloc_node mm/slab.c:3667 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3682 __kmalloc_reserve.isra.39+0x41/0xd0 net/core/skbuff.c:137 __alloc_skb+0x13b/0x780 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:983 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1180 [inline] netlink_sendmsg+0xa86/0xe60 net/netlink/af_netlink.c:1872 sock_sendmsg_nosec net/socket.c:630 [inline] sock_sendmsg+0xca/0x110 net/socket.c:640 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2046 __sys_sendmsg+0xe5/0x210 net/socket.c:2080 SYSC_sendmsg net/socket.c:2091 [inline] SyS_sendmsg+0x2d/0x50 net/socket.c:2087 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f3b525d2c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f3b525d2aa0 RCX: 0000000000453299 RDX: 0000000000000000 RSI: 0000000020fde000 RDI: 0000000000000013 RBP: 00007f3b525d2a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b8096 R13: 00007f3b525d2bc8 R14: 00000000004b8096 R15: 0000000000000000 device syz1 entered promiscuous mode device syz1 left promiscuous mode QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl print_req_error: I/O error, dev loop0, sector 512 Buffer I/O error on dev loop0, logical block 64, lost async page write kauditd_printk_skb: 48 callbacks suppressed audit: type=1400 audit(1517586860.959:105): avc: denied { create } for pid=7296 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_iscsi_socket permissive=1 audit: type=1400 audit(1517586861.105:106): avc: denied { map } for pid=7355 comm="syz-executor4" path="socket:[19218]" dev="sockfs" ino=19218 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=rawip_socket permissive=1 PPPIOCDETACH file->f_count=2 QAT: Invalid ioctl QAT: Invalid ioctl audit: type=1400 audit(1517586861.706:107): avc: denied { validate_trans } for pid=7525 comm="syz-executor6" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:security_t:s0 tclass=security permissive=1 audit: type=1400 audit(1517586862.057:108): avc: denied { ioctl } for pid=7638 comm="syz-executor3" path="socket:[19583]" dev="sockfs" ino=19583 ioctlcmd=0x8933 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_crypto_socket permissive=1 dccp_invalid_packet: P.type (REQUEST) not Data || [Data]Ack, while P.X == 0 dccp_invalid_packet: P.type (REQUEST) not Data || [Data]Ack, while P.X == 0 audit: type=1326 audit(1517586862.292:109): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7681 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517586862.319:110): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7681 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=288 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517586862.319:111): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7681 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517586862.319:112): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7681 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=298 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517586862.321:113): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7681 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517586862.322:114): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7681 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=160 compat=0 ip=0x453299 code=0x7ffc0000 QAT: Invalid ioctl QAT: Invalid ioctl irq bypass consumer (token 00000000f90102c3) registration fails: -16