Warning: Permanently added '10.128.0.108' (ECDSA) to the list of known hosts. [ 42.932006] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 43.059849] audit: type=1400 audit(1572147231.873:36): avc: denied { map } for pid=7037 comm="syz-executor270" path="/root/syz-executor270100948" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 43.064628] [ 43.086253] audit: type=1400 audit(1572147231.873:37): avc: denied { create } for pid=7037 comm="syz-executor270" 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 [ 43.088449] ============================= [ 43.112299] audit: type=1400 audit(1572147231.873:38): avc: denied { write } for pid=7037 comm="syz-executor270" 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 [ 43.117399] WARNING: suspicious RCU usage [ 43.140141] audit: type=1400 audit(1572147231.873:39): avc: denied { read } for pid=7037 comm="syz-executor270" 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 [ 43.144301] 4.14.150 #0 Not tainted [ 43.172378] ----------------------------- [ 43.176511] net/tipc/bearer.c:177 suspicious rcu_dereference_protected() usage! [ 43.184010] [ 43.184010] other info that might help us debug this: [ 43.184010] [ 43.192184] [ 43.192184] rcu_scheduler_active = 2, debug_locks = 1 [ 43.198865] 2 locks held by syz-executor270/7037: [ 43.203752] #0: (cb_lock){++++}, at: [] genl_rcv+0x1a/0x40 [ 43.211582] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x119/0x150 [ 43.219719] [ 43.219719] stack backtrace: [ 43.224264] CPU: 0 PID: 7037 Comm: syz-executor270 Not tainted 4.14.150 #0 [ 43.231276] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.240616] Call Trace: [ 43.243185] dump_stack+0x138/0x197 [ 43.246792] lockdep_rcu_suspicious+0x153/0x15d [ 43.251439] tipc_bearer_find+0x20a/0x300 [ 43.255582] tipc_nl_compat_link_set+0x433/0xbf0 [ 43.260327] tipc_nl_compat_doit+0x1a2/0x550 [ 43.264723] ? security_capable+0x8e/0xc0 [ 43.268854] ? tipc_nl_compat_link_stat_dump+0x2080/0x2080 [ 43.274459] ? ns_capable_common+0x12c/0x160 [ 43.278887] ? ns_capable+0x23/0x30 [ 43.282531] ? __netlink_ns_capable+0xe2/0x130 [ 43.287093] tipc_nl_compat_recv+0x9ec/0xb20 [ 43.291478] ? is_bpf_text_address+0xa6/0x120 [ 43.295948] ? tipc_nl_compat_doit+0x550/0x550 [ 43.300505] ? tipc_nl_node_dump+0xc90/0xc90 [ 43.304927] ? tipc_nl_compat_bearer_enable+0x570/0x570 [ 43.310271] ? lock_acquire+0x16f/0x430 [ 43.314223] ? genl_rcv_msg+0x119/0x150 [ 43.318182] ? genl_rcv_msg+0x119/0x150 [ 43.322136] genl_family_rcv_msg+0x614/0xc30 [ 43.326524] ? genl_unregister_family+0x6a0/0x6a0 [ 43.331363] genl_rcv_msg+0xb4/0x150 [ 43.335054] netlink_rcv_skb+0x14f/0x3c0 [ 43.339094] ? genl_family_rcv_msg+0xc30/0xc30 [ 43.343655] ? netlink_ack+0x9a0/0x9a0 [ 43.347519] ? genl_rcv+0x1a/0x40 [ 43.350964] genl_rcv+0x29/0x40 [ 43.354234] netlink_unicast+0x45d/0x640 [ 43.358273] ? netlink_attachskb+0x6a0/0x6a0 [ 43.362661] ? security_netlink_send+0x81/0xb0 [ 43.367235] netlink_sendmsg+0x7c4/0xc60 [ 43.371277] ? netlink_unicast+0x640/0x640 [ 43.375489] ? security_socket_sendmsg+0x89/0xb0 [ 43.380324] ? netlink_unicast+0x640/0x640 [ 43.384536] sock_sendmsg+0xce/0x110 [ 43.388229] ___sys_sendmsg+0x70a/0x840 [ 43.392178] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 43.396909] ? __lock_acquire+0x5f7/0x4620 [ 43.401120] ? save_trace+0x290/0x290 [ 43.404901] ? trace_hardirqs_on+0x10/0x10 [ 43.409113] ? save_trace+0x290/0x290 [ 43.412889] ? lock_downgrade+0x740/0x740 [ 43.417013] ? task_work_run+0xf0/0x190 [ 43.420982] ? __fget_light+0x172/0x1f0 [ 43.424949] ? __fdget+0x1b/0x20 [ 43.428303] ? sockfd_lookup_light+0xb4/0x160 [ 43.432778] __sys_sendmsg+0xb9/0x140 [ 43.436557] ? SyS_shutdown+0x170/0x170 [ 43.440553] ? trace_hardirqs_on_caller+0x400/0x590 [ 43.445587] SyS_sendmsg+0x2d/0x50 [ 43.449102] ? __sys_sendmsg+0x140/0x140 [ 43.453140] do_syscall_64+0x1e8/0x640 [ 43.457003] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.461824] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 43.466991] RIP: 0033:0x444149 [ 43.470211] RSP: 002b:00007ffca44827e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 43.477916] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444149 [ 43.485174] RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000003 [ 43.492424] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 43.499673] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401df0 [ 43.506920] R13: 0000000000401e80 R14: 0000000000000000