====================================================== WARNING: possible circular locking dependency detected 4.15.0+ #287 Not tainted ------------------------------------------------------ syz-executor6/5289 is trying to acquire lock: (sk_lock-AF_INET){+.+.}, at: [<00000000c3a12fae>] lock_sock include/net/sock.h:1459 [inline] (sk_lock-AF_INET){+.+.}, at: [<00000000c3a12fae>] do_ip_getsockopt+0x1b3/0x2170 net/ipv4/ip_sockglue.c:1331 but task is already holding lock: (rtnl_mutex){+.+.}, at: [<000000000772e12d>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 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:72 register_netdevice_notifier+0xad/0x860 net/core/dev.c:1590 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:1143 [inline] do_ipt_set_ctl+0x370/0x5f0 net/ipv4/netfilter/ip_tables.c:1677 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:1256 sctp_setsockopt+0x2a0/0x5de0 net/sctp/socket.c:4074 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2968 SYSC_setsockopt net/socket.c:1831 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1810 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:2770 lock_sock include/net/sock.h:1459 [inline] do_ip_getsockopt+0x1b3/0x2170 net/ipv4/ip_sockglue.c:1331 ip_getsockopt+0x90/0x220 net/ipv4/ip_sockglue.c:1562 udp_getsockopt+0x45/0x80 net/ipv4/udp.c:2480 sock_common_getsockopt+0x95/0xd0 net/core/sock.c:2927 SYSC_getsockopt net/socket.c:1862 [inline] SyS_getsockopt+0x178/0x340 net/socket.c:1844 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-executor6/5289: #0: (rtnl_mutex){+.+.}, at: [<000000000772e12d>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 stack backtrace: CPU: 0 PID: 5289 Comm: syz-executor6 Not tainted 4.15.0+ #287 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:2770 lock_sock include/net/sock.h:1459 [inline] do_ip_getsockopt+0x1b3/0x2170 net/ipv4/ip_sockglue.c:1331 ip_getsockopt+0x90/0x220 net/ipv4/ip_sockglue.c:1562 udp_getsockopt+0x45/0x80 net/ipv4/udp.c:2480 sock_common_getsockopt+0x95/0xd0 net/core/sock.c:2927 SYSC_getsockopt net/socket.c:1862 [inline] SyS_getsockopt+0x178/0x340 net/socket.c:1844 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f0c331d4c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007f0c331d5700 RCX: 0000000000453299 RDX: 0000000000000030 RSI: 0000000000000000 RDI: 0000000000000013 RBP: 0000000000a2f3c0 R08: 0000000020007ffd R09: 0000000000000000 R10: 0000000020008000 R11: 0000000000000212 R12: 0000000000000000 R13: 0000000000a2f33f R14: 00007f0c331d59c0 R15: 0000000000000000 ipt_REJECT: TCP_RESET invalid for non-tcp ipt_REJECT: TCP_RESET invalid for non-tcp QAT: Invalid ioctl QAT: Invalid ioctl xt_hashlimit: overflow, rate too high: 0 QAT: Invalid ioctl xt_hashlimit: overflow, rate too high: 0 QAT: Invalid ioctl binder: 5450 RLIMIT_NICE not set audit: type=1326 audit(1517389965.648:16): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5260 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389965.648:17): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5260 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389965.653:18): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5260 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=5 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389965.661:19): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5260 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389965.662:20): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5260 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=104 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389965.662:21): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5260 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389965.663:22): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5260 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=108 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389965.663:23): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5260 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389965.667:24): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5260 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=4 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389965.667:25): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5260 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 binder: 5597:5606 DecRefs 0 refcount change on invalid ref 2 ret -22 binder: 5597:5606 BC_ACQUIRE_DONE u0000000000000000 node 1 cookie mismatch 0000000000000002 != 0000000000000000 binder: release 5597:5606 transaction 2 out, still active binder: send failed reply for transaction 2, target dead binder: send failed reply for transaction 4 to 5597:5606 binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29189 device eql entered promiscuous mode netlink: 'syz-executor2': attribute type 1 has an invalid length. netlink: 'syz-executor2': attribute type 1 has an invalid length. netlink: 'syz-executor0': attribute type 1 has an invalid length. netlink: 'syz-executor0': attribute type 1 has an invalid length. capability: warning: `syz-executor4' uses 32-bit capabilities (legacy support in use) mmap: syz-executor4 (6281) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.txt. snd_virmidi snd_virmidi.0: control 120:0:0:Î:0 is already present device eql entered promiscuous mode device eql entered promiscuous mode dccp_close: ABORT with 4294967275 bytes unread ieee80211 phy2: Selected rate control algorithm 'minstrel_ht' ieee80211 phy3: Selected rate control algorithm 'minstrel_ht' QAT: Invalid ioctl QAT: Invalid ioctl kauditd_printk_skb: 142 callbacks suppressed audit: type=1326 audit(1517389972.634:168): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6950 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389972.635:169): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6950 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=16 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389972.635:170): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6950 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389972.637:171): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6950 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=302 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389972.637:172): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6950 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389972.637:173): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6950 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=9 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389972.638:174): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6950 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517389972.643:175): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6950 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=317 compat=0 ip=0x453299 code=0x7ffc0000 syz-executor3 uses obsolete (PF_INET,SOCK_PACKET) QAT: Invalid ioctl binder: 7157:7164 got transaction to invalid handle binder: 7157:7164 transaction failed 29201/-22, size 80-64 line 2788 binder: BINDER_SET_CONTEXT_MGR already set binder: 7157:7171 ioctl 40046207 0 returned -16 binder: 7157:7164 got transaction to invalid handle binder: 7157:7164 transaction failed 29201/-22, size 80-64 line 2788 binder: undelivered TRANSACTION_ERROR: 29201 binder: undelivered TRANSACTION_ERROR: 29201 xt_recent: hitcount (262144) is larger than allowed maximum (255) xt_recent: hitcount (262144) is larger than allowed maximum (255) audit: type=1400 audit(1517389974.078:176): avc: denied { setattr } for pid=7352 comm="syz-executor2" name="map_files" dev="proc" ino=19478 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=1326 audit(1517389974.133:177): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7359 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 rpcbind: RPC call returned error 22 rpcbind: RPC call returned error 22 rfkill: input handler disabled rfkill: input handler enabled