Warning: Permanently added '10.128.0.213' (ECDSA) to the list of known hosts. [ 55.329748] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 55.464464] audit: type=1400 audit(1555003066.210:36): avc: denied { map } for pid=7047 comm="syz-executor810" path="/root/syz-executor810306520" 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 [ 55.469875] [ 55.492277] audit: type=1400 audit(1555003066.210:37): avc: denied { create } for pid=7047 comm="syz-executor810" 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 [ 55.493274] ============================= [ 55.519267] audit: type=1400 audit(1555003066.210:38): avc: denied { write } for pid=7047 comm="syz-executor810" 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 [ 55.523379] WARNING: suspicious RCU usage [ 55.550303] audit: type=1400 audit(1555003066.210:39): avc: denied { read } for pid=7047 comm="syz-executor810" 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 [ 55.555490] 4.14.111 #1 Not tainted [ 55.583342] ----------------------------- [ 55.588194] net/tipc/bearer.c:177 suspicious rcu_dereference_protected() usage! [ 55.596152] [ 55.596152] other info that might help us debug this: [ 55.596152] [ 55.604707] [ 55.604707] rcu_scheduler_active = 2, debug_locks = 1 [ 55.612103] 2 locks held by syz-executor810/7047: [ 55.617114] #0: (cb_lock){++++}, at: [] genl_rcv+0x1a/0x40 [ 55.625805] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x119/0x150 [ 55.634509] [ 55.634509] stack backtrace: [ 55.639009] CPU: 0 PID: 7047 Comm: syz-executor810 Not tainted 4.14.111 #1 [ 55.646291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.655742] Call Trace: [ 55.658335] dump_stack+0x138/0x19c [ 55.661974] lockdep_rcu_suspicious+0x153/0x15d [ 55.666661] tipc_bearer_find+0x20a/0x300 [ 55.670813] tipc_nl_compat_link_set+0x421/0xbe0 [ 55.675834] tipc_nl_compat_doit+0x170/0x520 [ 55.680543] ? tipc_nl_compat_link_stat_dump+0x2060/0x2060 [ 55.686267] ? ns_capable_common+0x12c/0x160 [ 55.690660] ? ns_capable+0x23/0x30 [ 55.694275] ? __netlink_ns_capable+0xe2/0x130 [ 55.699019] tipc_nl_compat_recv+0x9be/0xaf0 [ 55.703431] ? __lock_is_held+0xb6/0x140 [ 55.707598] ? tipc_nl_compat_doit+0x520/0x520 [ 55.712386] ? tipc_nl_node_dump+0xc90/0xc90 [ 55.717594] ? tipc_nl_compat_bearer_enable+0x550/0x550 [ 55.723015] ? genl_rcv_msg+0x119/0x150 [ 55.727010] ? genl_rcv_msg+0x119/0x150 [ 55.731009] genl_family_rcv_msg+0x61c/0xc40 [ 55.735487] ? genl_rcv+0x40/0x40 [ 55.739007] ? __lock_acquire+0x5f9/0x45e0 [ 55.743260] ? __lock_acquire+0x5f9/0x45e0 [ 55.747718] genl_rcv_msg+0xb4/0x150 [ 55.751737] netlink_rcv_skb+0x152/0x3c0 [ 55.755802] ? genl_family_rcv_msg+0xc40/0xc40 [ 55.760382] ? netlink_ack+0x9a0/0x9a0 [ 55.764543] ? genl_rcv+0x1a/0x40 [ 55.768081] genl_rcv+0x29/0x40 [ 55.771596] netlink_unicast+0x466/0x780 [ 55.775658] ? netlink_attachskb+0x6a0/0x6a0 [ 55.780168] ? security_netlink_send+0x87/0xb0 [ 55.784745] netlink_sendmsg+0x7c4/0xc60 [ 55.788932] ? netlink_unicast+0x780/0x780 [ 55.793170] ? security_socket_sendmsg+0x8f/0xc0 [ 55.798237] ? netlink_unicast+0x780/0x780 [ 55.802491] sock_sendmsg+0xd0/0x110 [ 55.806214] ___sys_sendmsg+0x70c/0x850 [ 55.810193] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 55.815037] ? __lock_acquire+0x5f9/0x45e0 [ 55.819302] ? save_trace+0x290/0x290 [ 55.823140] ? trace_hardirqs_on+0x10/0x10 [ 55.828086] ? save_trace+0x290/0x290 [ 55.831886] ? lock_downgrade+0x6e0/0x6e0 [ 55.836337] ? task_work_run+0xf0/0x190 [ 55.840350] ? __fget_light+0x172/0x1f0 [ 55.844917] ? __fdget+0x1b/0x20 [ 55.848592] ? sockfd_lookup_light+0xb4/0x160 [ 55.855319] __sys_sendmsg+0xb9/0x140 [ 55.859320] ? SyS_shutdown+0x180/0x180 [ 55.863316] ? trace_hardirqs_on_caller+0x400/0x590 [ 55.868339] SyS_sendmsg+0x2d/0x50 [ 55.871887] ? __sys_sendmsg+0x140/0x140 [ 55.876068] do_syscall_64+0x1eb/0x630 [ 55.880140] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.884992] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 55.890177] RIP: 0033:0x444229 [ 55.893359] RSP: 002b:00007ffe5016c7b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 55.901078] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444229 [ 55.908414] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 55.91