Warning: Permanently added '10.128.0.168' (ECDSA) to the list of known hosts.
[   43.192697] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   43.314359] audit: type=1400 audit(1579778908.482:36): avc:  denied  { map } for  pid=7353 comm="syz-executor256" path="/root/syz-executor256624390" 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
[   43.317753] 
[   43.342659] =============================
[   43.346782] WARNING: suspicious RCU usage
[   43.351014] 4.14.167-syzkaller #0 Not tainted
[   43.355510] -----------------------------
[   43.359648] net/sched/act_sample.c:95 suspicious rcu_dereference_protected() usage!
[   43.367666] 
[   43.367666] other info that might help us debug this:
[   43.367666] 
[   43.376390] 
[   43.376390] rcu_scheduler_active = 2, debug_locks = 1
[   43.383615] 1 lock held by syz-executor256/7353:
[   43.388366]  #0:  (rtnl_mutex){+.+.}, at: [<ffffffff85238119>] rtnetlink_rcv_msg+0x339/0xb70
[   43.397022] 
[   43.397022] stack backtrace:
[   43.401583] CPU: 1 PID: 7353 Comm: syz-executor256 Not tainted 4.14.167-syzkaller #0
[   43.409558] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   43.419868] Call Trace:
[   43.422470]  dump_stack+0x142/0x197
[   43.426090]  lockdep_rcu_suspicious+0x153/0x15d
[   43.430848]  tcf_sample_init+0x783/0x960
[   43.434908]  ? tcf_sample_act+0x9f0/0x9f0
[   43.439100]  ? rcu_read_lock_sched_held+0x110/0x130
[   43.445341]  ? _raw_read_unlock+0x2d/0x50
[   43.449537]  tcf_action_init_1+0x53c/0xaa0
[   43.453822]  ? tcf_action_dump_old+0x80/0x80
[   43.458265]  ? lock_downgrade+0x740/0x740
[   43.462478]  ? nla_parse+0x186/0x240
[   43.466197]  tcf_action_init+0x2ab/0x480
[   43.470344]  ? tcf_action_init_1+0xaa0/0xaa0
[   43.474889]  ? memset+0x32/0x40
[   43.478154]  ? nla_parse+0x186/0x240
[   43.482110]  tc_ctl_action+0x30a/0x548
[   43.486000]  ? tca_action_gd+0x840/0x840
[   43.490065]  ? tca_action_gd+0x840/0x840
[   43.494131]  rtnetlink_rcv_msg+0x3da/0xb70
[   43.498371]  ? rtnl_bridge_getlink+0x7a0/0x7a0
[   43.502957]  ? netlink_deliver_tap+0x93/0x8f0
[   43.507457]  netlink_rcv_skb+0x14f/0x3c0
[   43.511524]  ? rtnl_bridge_getlink+0x7a0/0x7a0
[   43.516109]  ? lock_downgrade+0x740/0x740
[   43.520253]  ? netlink_ack+0x9a0/0x9a0
[   43.524201]  ? netlink_deliver_tap+0xba/0x8f0
[   43.528698]  rtnetlink_rcv+0x1d/0x30
[   43.532541]  netlink_unicast+0x44d/0x650
[   43.536857]  ? netlink_attachskb+0x6a0/0x6a0
[   43.541272]  ? security_netlink_send+0x81/0xb0
[   43.545856]  netlink_sendmsg+0x7c4/0xc60
[   43.550730]  ? netlink_unicast+0x650/0x650
[   43.554953]  ? security_socket_sendmsg+0x89/0xb0
[   43.559709]  ? netlink_unicast+0x650/0x650
[   43.564071]  sock_sendmsg+0xce/0x110
[   43.567791]  ___sys_sendmsg+0x70a/0x840
[   43.571794]  ? lock_downgrade+0x740/0x740
[   43.575978]  ? copy_msghdr_from_user+0x3f0/0x3f0
[   43.580726]  ? do_raw_spin_unlock+0x174/0x260
[   43.585220]  ? _raw_spin_unlock+0x2d/0x50
[   43.589444]  ? do_huge_pmd_anonymous_page+0x2f9/0x1200
[   43.594743]  ? prep_transhuge_page+0xa0/0xa0
[   43.599271]  ? __handle_mm_fault+0x692/0x33d0
[   43.603964]  ? save_trace+0x290/0x290
[   43.607887]  ? copy_page_range+0x1de0/0x1de0
[   43.612314]  ? __do_page_fault+0x4e9/0xb80
[   43.616610]  ? __fget_light+0x172/0x1f0
[   43.620706]  ? __fdget+0x1b/0x20
[   43.624074]  ? sockfd_lookup_light+0xb4/0x160
[   43.628626]  __sys_sendmsg+0xb9/0x140
[   43.632550]  ? SyS_shutdown+0x170/0x170
[   43.636525]  SyS_sendmsg+0x2d/0x50
[   43.640063]  ? __sys_sendmsg+0x140/0x140
[   43.644228]  do_syscall_64+0x1e8/0x640
[   43.648110]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   43.652958]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   43.658151] RIP: 0033:0x440369
[   43.661334] RSP: 002b:00007ffe3006b268 EFLAGS: 0000