Warning: Permanently added '10.128.0.175' (ECDSA) to the list of known hosts. [ 41.272387] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 41.388229] audit: type=1400 audit(1572629932.422:36): avc: denied { map } for pid=6865 comm="syz-executor197" path="/root/syz-executor197887331" 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 [ 41.392901] [ 41.414561] audit: type=1400 audit(1572629932.422:37): avc: denied { create } for pid=6865 comm="syz-executor197" 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 [ 41.416186] ============================= [ 41.440776] audit: type=1400 audit(1572629932.422:38): avc: denied { write } for pid=6865 comm="syz-executor197" 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 [ 41.445159] WARNING: suspicious RCU usage [ 41.468720] audit: type=1400 audit(1572629932.422:39): avc: denied { read } for pid=6865 comm="syz-executor197" 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 [ 41.473220] 4.14.151 #0 Not tainted [ 41.500296] ----------------------------- [ 41.504574] net/tipc/bearer.c:177 suspicious rcu_dereference_protected() usage! [ 41.512138] [ 41.512138] other info that might help us debug this: [ 41.512138] [ 41.520311] [ 41.520311] rcu_scheduler_active = 2, debug_locks = 1 [ 41.526955] 2 locks held by syz-executor197/6865: [ 41.531828] #0: (cb_lock){++++}, at: [] genl_rcv+0x1a/0x40 [ 41.539197] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x119/0x150 [ 41.547407] [ 41.547407] stack backtrace: [ 41.551930] CPU: 1 PID: 6865 Comm: syz-executor197 Not tainted 4.14.151 #0 [ 41.558930] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.568465] Call Trace: [ 41.571032] dump_stack+0x138/0x197 [ 41.574639] lockdep_rcu_suspicious+0x153/0x15d [ 41.579298] tipc_bearer_find+0x20a/0x300 [ 41.583420] tipc_nl_compat_link_set+0x433/0xbf0 [ 41.588167] tipc_nl_compat_doit+0x1a2/0x550 [ 41.592550] ? security_capable+0x8e/0xc0 [ 41.596672] ? tipc_nl_compat_link_stat_dump+0x2080/0x2080 [ 41.602276] ? ns_capable_common+0x12c/0x160 [ 41.606677] ? ns_capable+0x23/0x30 [ 41.610282] ? __netlink_ns_capable+0xe2/0x130 [ 41.614840] tipc_nl_compat_recv+0x9ec/0xb20 [ 41.619224] ? is_bpf_text_address+0xa6/0x120 [ 41.623700] ? tipc_nl_compat_doit+0x550/0x550 [ 41.628257] ? tipc_nl_node_dump+0xc90/0xc90 [ 41.632641] ? tipc_nl_compat_bearer_enable+0x570/0x570 [ 41.637996] ? lock_acquire+0x16f/0x430 [ 41.641944] ? genl_rcv_msg+0x119/0x150 [ 41.645894] ? genl_rcv_msg+0x119/0x150 [ 41.649855] genl_family_rcv_msg+0x614/0xc30 [ 41.654238] ? genl_unregister_family+0x6a0/0x6a0 [ 41.659062] genl_rcv_msg+0xb4/0x150 [ 41.662750] netlink_rcv_skb+0x14f/0x3c0 [ 41.666799] ? genl_family_rcv_msg+0xc30/0xc30 [ 41.671357] ? netlink_ack+0x9a0/0x9a0 [ 41.675216] ? genl_rcv+0x1a/0x40 [ 41.678650] genl_rcv+0x29/0x40 [ 41.682014] netlink_unicast+0x45d/0x640 [ 41.686052] ? netlink_attachskb+0x6a0/0x6a0 [ 41.690436] ? security_netlink_send+0x81/0xb0 [ 41.694995] netlink_sendmsg+0x7c4/0xc60 [ 41.699033] ? netlink_unicast+0x640/0x640 [ 41.703345] ? security_socket_sendmsg+0x89/0xb0 [ 41.708075] ? netlink_unicast+0x640/0x640 [ 41.712288] sock_sendmsg+0xce/0x110 [ 41.715977] ___sys_sendmsg+0x70a/0x840 [ 41.719926] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 41.724658] ? __lock_acquire+0x5f7/0x4620 [ 41.728867] ? save_trace+0x290/0x290 [ 41.732664] ? trace_hardirqs_on+0x10/0x10 [ 41.736891] ? save_trace+0x290/0x290 [ 41.740666] ? lock_downgrade+0x740/0x740 [ 41.744787] ? task_work_run+0xf0/0x190 [ 41.748755] ? __fget_light+0x172/0x1f0 [ 41.752706] ? __fdget+0x1b/0x20 [ 41.756047] ? sockfd_lookup_light+0xb4/0x160 [ 41.760524] __sys_sendmsg+0xb9/0x140 [ 41.764301] ? SyS_shutdown+0x170/0x170 [ 41.768249] ? trace_hardirqs_on_caller+0x400/0x590 [ 41.773243] SyS_sendmsg+0x2d/0x50 [ 41.776774] ? __sys_sendmsg+0x140/0x140 [ 41.780820] do_syscall_64+0x1e8/0x640 [ 41.784895] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.789727] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 41.794911] RIP: 0033:0x444149 [ 41.798076] RSP: 002b:00007ffe38c3d278 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 41.805869] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444149 [ 41.813124] RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000003 [ 41.820368] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 41.827613] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401df0 [ 41.834869] R13: 0000000000401e80 R14: 0000000000000000 R15