Warning: Permanently added '10.128.0.227' (ECDSA) to the list of known hosts. [ 43.905862] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 44.024556] audit: type=1400 audit(1569426551.287:36): avc: denied { map } for pid=6814 comm="syz-executor967" path="/root/syz-executor967242275" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 44.030869] [ 44.051577] audit: type=1400 audit(1569426551.287:37): avc: denied { create } for pid=6814 comm="syz-executor967" 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 [ 44.052773] ============================= [ 44.076976] audit: type=1400 audit(1569426551.287:38): avc: denied { write } for pid=6814 comm="syz-executor967" 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 [ 44.076997] audit: type=1400 audit(1569426551.287:39): avc: denied { read } for pid=6814 comm="syz-executor967" 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 [ 44.082139] WARNING: suspicious RCU usage [ 44.134021] 4.14.146 #0 Not tainted [ 44.137644] ----------------------------- [ 44.141901] net/tipc/bearer.c:177 suspicious rcu_dereference_protected() usage! [ 44.149392] [ 44.149392] other info that might help us debug this: [ 44.149392] [ 44.157708] [ 44.157708] rcu_scheduler_active = 2, debug_locks = 1 [ 44.165506] 2 locks held by syz-executor967/6814: [ 44.170434] #0: (cb_lock){++++}, at: [] genl_rcv+0x1a/0x40 [ 44.177813] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x119/0x150 [ 44.186003] [ 44.186003] stack backtrace: [ 44.190518] CPU: 0 PID: 6814 Comm: syz-executor967 Not tainted 4.14.146 #0 [ 44.197509] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.206854] Call Trace: [ 44.209438] dump_stack+0x138/0x197 [ 44.213247] lockdep_rcu_suspicious+0x153/0x15d [ 44.217908] tipc_bearer_find+0x20a/0x300 [ 44.222070] tipc_nl_compat_link_set+0x433/0xbf0 [ 44.226824] tipc_nl_compat_doit+0x1a2/0x550 [ 44.231223] ? security_capable+0x8e/0xc0 [ 44.235388] ? tipc_nl_compat_link_stat_dump+0x2080/0x2080 [ 44.242563] ? ns_capable_common+0x12c/0x160 [ 44.246958] ? ns_capable+0x23/0x30 [ 44.250573] ? __netlink_ns_capable+0xe2/0x130 [ 44.255134] tipc_nl_compat_recv+0x9ec/0xb20 [ 44.259522] ? is_bpf_text_address+0xa6/0x120 [ 44.264005] ? tipc_nl_compat_doit+0x550/0x550 [ 44.268575] ? tipc_nl_node_dump+0xc90/0xc90 [ 44.273121] ? tipc_nl_compat_bearer_enable+0x570/0x570 [ 44.278550] ? lock_acquire+0x16f/0x430 [ 44.282502] ? genl_rcv_msg+0x119/0x150 [ 44.286462] ? genl_rcv_msg+0x119/0x150 [ 44.290424] genl_family_rcv_msg+0x614/0xc30 [ 44.294823] ? genl_unregister_family+0x6a0/0x6a0 [ 44.299650] genl_rcv_msg+0xb4/0x150 [ 44.303342] netlink_rcv_skb+0x14f/0x3c0 [ 44.307390] ? genl_family_rcv_msg+0xc30/0xc30 [ 44.311950] ? netlink_ack+0x9a0/0x9a0 [ 44.315812] ? genl_rcv+0x1a/0x40 [ 44.319244] genl_rcv+0x29/0x40 [ 44.322507] netlink_unicast+0x45d/0x640 [ 44.326546] ? netlink_attachskb+0x6a0/0x6a0 [ 44.331206] ? security_netlink_send+0x81/0xb0 [ 44.335779] netlink_sendmsg+0x7c4/0xc60 [ 44.340103] ? netlink_unicast+0x640/0x640 [ 44.344318] ? security_socket_sendmsg+0x89/0xb0 [ 44.349051] ? netlink_unicast+0x640/0x640 [ 44.353278] sock_sendmsg+0xce/0x110 [ 44.356969] ___sys_sendmsg+0x70a/0x840 [ 44.360922] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 44.365661] ? __lock_acquire+0x5f7/0x4620 [ 44.369873] ? save_trace+0x290/0x290 [ 44.373655] ? trace_hardirqs_on+0x10/0x10 [ 44.377872] ? save_trace+0x290/0x290 [ 44.381666] ? lock_downgrade+0x6e0/0x6e0 [ 44.385803] ? task_work_run+0xf0/0x190 [ 44.389753] ? __fget_light+0x172/0x1f0 [ 44.393705] ? __fdget+0x1b/0x20 [ 44.397051] ? sockfd_lookup_light+0xb4/0x160 [ 44.401535] __sys_sendmsg+0xb9/0x140 [ 44.405313] ? SyS_shutdown+0x170/0x170 [ 44.409265] ? trace_hardirqs_on_caller+0x400/0x590 [ 44.414271] SyS_sendmsg+0x2d/0x50 [ 44.417789] ? __sys_sendmsg+0x140/0x140 [ 44.421841] do_syscall_64+0x1e8/0x640 [ 44.425716] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.430550] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 44.435714] RIP: 0033:0x4441b9 [ 44.438884] RSP: 002b:00007ffc660ab558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 44.446571] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 00000000004441b9 [ 44.453843] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 [ 44.461181] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 44.468691] R10: 0000000000001800 R11: 0000000000000246 R12: 0000000000401e60 [ 44.47