Warning: Permanently added '10.128.0.236' (ECDSA) to the list of known hosts. [ 41.738153] urandom_read: 1 callbacks suppressed [ 41.738158] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 41.862289] audit: type=1400 audit(1571771012.622:36): avc: denied { map } for pid=6914 comm="syz-executor728" path="/root/syz-executor728026354" 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 [ 41.866974] [ 41.888989] audit: type=1400 audit(1571771012.622:37): avc: denied { create } for pid=6914 comm="syz-executor728" 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 [ 41.891085] ============================= [ 41.915580] audit: type=1400 audit(1571771012.622:38): avc: denied { write } for pid=6914 comm="syz-executor728" 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 [ 41.919824] WARNING: suspicious RCU usage [ 41.944010] audit: type=1400 audit(1571771012.622:39): avc: denied { read } for pid=6914 comm="syz-executor728" 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 [ 41.948539] 4.14.150 #0 Not tainted [ 41.976247] ----------------------------- [ 41.980523] net/tipc/bearer.c:177 suspicious rcu_dereference_protected() usage! [ 41.988094] [ 41.988094] other info that might help us debug this: [ 41.988094] [ 41.996311] [ 41.996311] rcu_scheduler_active = 2, debug_locks = 1 [ 42.003013] 2 locks held by syz-executor728/6914: [ 42.007972] #0: (cb_lock){++++}, at: [] genl_rcv+0x1a/0x40 [ 42.015410] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x119/0x150 [ 42.023775] [ 42.023775] stack backtrace: [ 42.028307] CPU: 1 PID: 6914 Comm: syz-executor728 Not tainted 4.14.150 #0 [ 42.035464] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.044811] Call Trace: [ 42.047477] dump_stack+0x138/0x197 [ 42.051103] lockdep_rcu_suspicious+0x153/0x15d [ 42.056059] tipc_bearer_find+0x20a/0x300 [ 42.060328] tipc_nl_compat_link_set+0x433/0xbf0 [ 42.065233] tipc_nl_compat_doit+0x1a2/0x550 [ 42.069767] ? security_capable+0x8e/0xc0 [ 42.074289] ? tipc_nl_compat_link_stat_dump+0x2080/0x2080 [ 42.079995] ? ns_capable_common+0x12c/0x160 [ 42.084659] ? ns_capable+0x23/0x30 [ 42.088279] ? __netlink_ns_capable+0xe2/0x130 [ 42.092986] tipc_nl_compat_recv+0x9ec/0xb20 [ 42.097538] ? is_bpf_text_address+0xa6/0x120 [ 42.102042] ? tipc_nl_compat_doit+0x550/0x550 [ 42.106738] ? tipc_nl_node_dump+0xc90/0xc90 [ 42.111138] ? tipc_nl_compat_bearer_enable+0x570/0x570 [ 42.116654] ? lock_acquire+0x16f/0x430 [ 42.120618] ? genl_rcv_msg+0x119/0x150 [ 42.124582] ? genl_rcv_msg+0x119/0x150 [ 42.128552] genl_family_rcv_msg+0x614/0xc30 [ 42.132960] ? genl_unregister_family+0x6a0/0x6a0 [ 42.137805] genl_rcv_msg+0xb4/0x150 [ 42.141598] netlink_rcv_skb+0x14f/0x3c0 [ 42.145699] ? genl_family_rcv_msg+0xc30/0xc30 [ 42.150270] ? netlink_ack+0x9a0/0x9a0 [ 42.154149] ? genl_rcv+0x1a/0x40 [ 42.157595] genl_rcv+0x29/0x40 [ 42.161013] netlink_unicast+0x45d/0x640 [ 42.165102] ? netlink_attachskb+0x6a0/0x6a0 [ 42.169597] ? security_netlink_send+0x81/0xb0 [ 42.176834] netlink_sendmsg+0x7c4/0xc60 [ 42.180893] ? netlink_unicast+0x640/0x640 [ 42.185120] ? security_socket_sendmsg+0x89/0xb0 [ 42.189909] ? netlink_unicast+0x640/0x640 [ 42.194295] sock_sendmsg+0xce/0x110 [ 42.198034] ___sys_sendmsg+0x70a/0x840 [ 42.202344] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 42.207496] ? __lock_acquire+0x5f7/0x4620 [ 42.211739] ? save_trace+0x290/0x290 [ 42.215623] ? trace_hardirqs_on+0x10/0x10 [ 42.219982] ? save_trace+0x290/0x290 [ 42.223777] ? lock_downgrade+0x740/0x740 [ 42.228296] ? task_work_run+0xf0/0x190 [ 42.232268] ? __fget_light+0x172/0x1f0 [ 42.236363] ? __fdget+0x1b/0x20 [ 42.239722] ? sockfd_lookup_light+0xb4/0x160 [ 42.244210] __sys_sendmsg+0xb9/0x140 [ 42.248182] ? SyS_shutdown+0x170/0x170 [ 42.252158] ? trace_hardirqs_on_caller+0x400/0x590 [ 42.257217] SyS_sendmsg+0x2d/0x50 [ 42.260753] ? __sys_sendmsg+0x140/0x140 [ 42.264810] do_syscall_64+0x1e8/0x640 [ 42.268855] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.273699] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 42.279043] RIP: 0033:0x444229 [ 42.282378] RSP: 002b:00007fff1de2bcb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 42.290080] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444229 [ 42.297616] RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000003 [ 42.304992] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 42.312446] R10: 0