binder: undelivered transaction 15, process died. ====================================================== WARNING: possible circular locking dependency detected 4.15.0+ #295 Not tainted ------------------------------------------------------ syz-executor1/6404 is trying to acquire lock: (sk_lock-AF_INET){+.+.}, at: [<00000000345793d6>] lock_sock include/net/sock.h:1461 [inline] (sk_lock-AF_INET){+.+.}, at: [<00000000345793d6>] do_ip_setsockopt.isra.12+0x1d9/0x3210 net/ipv4/ip_sockglue.c:646 but task is already holding lock: (rtnl_mutex){+.+.}, at: [<00000000f3acda8e>] 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-executor1/6404: #0: (rtnl_mutex){+.+.}, at: [<00000000f3acda8e>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 stack backtrace: CPU: 1 PID: 6404 Comm: syz-executor1 Not tainted 4.15.0+ #295 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:00007ffbbe09bc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299 RDX: 0000000000000030 RSI: 0000000000000000 RDI: 0000000000000013 RBP: 0000000000000008 R08: 0000000000000090 R09: 0000000000000000 R10: 0000000020a81000 R11: 0000000000000212 R12: 00000000006ef160 R13: 00000000ffffffff R14: 00007ffbbe09c6d4 R15: 0000000000000000 binder: 6413:6430 unknown command 0 kauditd_printk_skb: 24 callbacks suppressed audit: type=1400 audit(1517713657.605:61): avc: denied { ipc_lock } for pid=6433 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 binder: 6413:6430 ioctl c0306201 20328000 returned -22 binder: 6413:6460 unknown command 0 binder: 6413:6460 ioctl c0306201 20328000 returned -22 binder: BINDER_SET_CONTEXT_MGR already set binder: 6413:6430 ioctl 40046207 0 returned -16 binder: release 6413:6452 transaction 20 out, still active binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 20, target dead TCP: request_sock_TCPv6: Possible SYN flooding on port 20006. Sending cookies. Check SNMP counters. binder: 6535 RLIMIT_NICE not set binder: 6535 RLIMIT_NICE not set binder: release 6528:6535 transaction 23 out, still active binder: release 6528:6535 transaction 22 in, still active binder: undelivered TRANSACTION_COMPLETE binder_alloc: binder_alloc_mmap_handler: 6528 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 6546 RLIMIT_NICE not set binder: 6528:6535 ioctl 40046207 0 returned -16 audit: type=1400 audit(1517713658.077:62): avc: denied { net_admin } for pid=4243 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_alloc: 6528: binder_alloc_buf, no vma audit: type=1400 audit(1517713658.087:63): avc: denied { call } for pid=6528 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 audit: type=1400 audit(1517713658.111:64): avc: denied { net_admin } for pid=4239 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 binder: 6528:6546 transaction failed 29189/-3, size 0-0 line 2957 binder_alloc: 6528: binder_alloc_buf, no vma binder: 6528:6535 transaction failed 29189/-3, size 0-0 line 2957 audit: type=1400 audit(1517713658.181:65): avc: denied { map } for pid=6575 comm="modprobe" path="/bin/kmod" dev="sda1" ino=1440 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1517713658.215:66): avc: denied { dac_override } for pid=6561 comm="syz-executor0" capability=1 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: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 6528:6546 transaction 22 out, still active binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 23, target dead binder: send failed reply for transaction 22, target dead audit: type=1400 audit(1517713658.323:67): avc: denied { sys_admin } for pid=6585 comm="syz-executor2" capability=21 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(1517713658.349:68): avc: denied { net_raw } for pid=6584 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(1517713658.513:69): avc: denied { dac_read_search } for pid=6614 comm="syz-executor3" capability=2 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(1517713659.086:70): avc: denied { map_create } for pid=6665 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=bpf permissive=1 sock: sock_set_timeout: `syz-executor5' (pid 6700) tries to set negative timeout sock: sock_set_timeout: `syz-executor5' (pid 6709) tries to set negative timeout QAT: Invalid ioctl QAT: Invalid ioctl Protocol error: SET target dimension is over the limit! device eql entered promiscuous mode Protocol error: SET target dimension is over the limit! binder: 6871:6872 ioctl 4010ae67 20b41ff0 returned -22 binder: 6871:6872 ioctl 4010ae67 20b41ff0 returned -22 kvm: apic: phys broadcast and lowest prio kvm: apic: phys broadcast and lowest prio ieee80211 phy2: Selected rate control algorithm 'minstrel_ht' ieee80211 phy3: Selected rate control algorithm 'minstrel_ht' SELinux: failed to load policy FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 7376 Comm: syz-executor6 Not tainted 4.15.0+ #295 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 mm/slab.c:3364 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3538 getname_flags+0xcb/0x580 fs/namei.c:138 getname+0x19/0x20 fs/namei.c:209 do_sys_open+0x2e7/0x6d0 fs/open.c:1053 SYSC_openat fs/open.c:1086 [inline] SyS_openat+0x30/0x40 fs/open.c:1080 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f9489962c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f9489962aa0 RCX: 0000000000453299 RDX: 0000000000000000 RSI: 0000000020195ff6 RDI: ffffffffffffff9c RBP: 00007f9489962a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b8096 R13: 00007f9489962bc8 R14: 00000000004b8096 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 7407 Comm: syz-executor6 Not tainted 4.15.0+ #295 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_fail_alloc_page mm/page_alloc.c:2955 [inline] prepare_alloc_pages mm/page_alloc.c:4194 [inline] __alloc_pages_nodemask+0x338/0xd80 mm/page_alloc.c:4233 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x72/0x570 mm/slab.c:2664 cache_alloc_refill mm/slab.c:3031 [inline] ____cache_alloc mm/slab.c:3113 [inline] __do_cache_alloc mm/slab.c:3335 [inline] slab_alloc mm/slab.c:3370 [inline] kmem_cache_alloc+0x400/0x760 mm/slab.c:3538 getname_flags+0xcb/0x580 fs/namei.c:138 getname+0x19/0x20 fs/namei.c:209 do_sys_open+0x2e7/0x6d0 fs/open.c:1053 SYSC_openat fs/open.c:1086 [inline] SyS_openat+0x30/0x40 fs/open.c:1080 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f9489962c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f9489962aa0 RCX: 0000000000453299 RDX: 0000000000000000 RSI: 0000000020195ff6 RDI: ffffffffffffff9c RBP: 00007f9489962a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b8096 R13: 00007f9489962bc8 R14: 00000000004b8096 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 7435 Comm: syz-executor6 Not tainted 4.15.0+ #295 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 mm/slab.c:3364 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3538 kmem_cache_zalloc include/linux/slab.h:678 [inline] get_empty_filp+0xfb/0x4f0 fs/file_table.c:122 path_openat+0xed/0x3530 fs/namei.c:3495 do_filp_open+0x25b/0x3b0 fs/namei.c:3553 do_sys_open+0x502/0x6d0 fs/open.c:1059 SYSC_openat fs/open.c:1086 [inline] SyS_openat+0x30/0x40 fs/open.c:1080 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f9489962c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f9489962aa0 RCX: 0000000000453299 RDX: 0000000000000000 RSI: 0000000020195ff6 RDI: ffffffffffffff9c RBP: 00007f9489962a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b8096 R13: 00007f9489962bc8 R14: 00000000004b8096 R15: 0000000000000000 kauditd_printk_skb: 184 callbacks suppressed audit: type=1400 audit(1517713662.898:255): avc: denied { set_context_mgr } for pid=7426 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: release 7426:7432 transaction 27 out, still active audit: type=1400 audit(1517713662.898:256): avc: denied { transfer } for pid=7426 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: unexpected work type, 4, not freed binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 27, target dead FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 7451 Comm: syz-executor6 Not tainted 4.15.0+ #295 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 mm/slab.c:3364 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3538 kmem_cache_zalloc include/linux/slab.h:678 [inline] file_alloc_security security/selinux/hooks.c:369 [inline] selinux_file_alloc_security+0xae/0x190 security/selinux/hooks.c:3454 security_file_alloc+0x6d/0xa0 security/security.c:873 get_empty_filp+0x189/0x4f0 fs/file_table.c:128 path_openat+0xed/0x3530 fs/namei.c:3495 do_filp_open+0x25b/0x3b0 fs/namei.c:3553 do_sys_open+0x502/0x6d0 fs/open.c:1059 SYSC_openat fs/open.c:1086 [inline] SyS_openat+0x30/0x40 fs/open.c:1080 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f9489962c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f9489962aa0 RCX: 0000000000453299 RDX: 0000000000000000 RSI: 0000000020195ff6 RDI: ffffffffffffff9c RBP: 00007f9489962a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b8096 R13: 00007f9489962bc8 R14: 00000000004b8096 R15: 0000000000000000 netlink: 'syz-executor4': attribute type 21 has an invalid length. netlink: 'syz-executor4': attribute type 21 has an invalid length. audit: type=1326 audit(1517713663.431:257): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7487 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517713663.460:258): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7487 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=4 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517713663.460:259): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7487 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517713663.461:260): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7487 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517713663.491:261): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7487 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=16 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517713663.491:262): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7487 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517713663.491:263): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7487 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517713663.492:264): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7487 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=51 compat=0 ip=0x453299 code=0x7ffc0000 IPVS: ftp: loaded support on port[0] = 21 syz-executor1 uses obsolete (PF_INET,SOCK_PACKET)