[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   16.046607] random: sshd: uninitialized urandom read (32 bytes read)
[   16.535313] audit: type=1400 audit(1572742991.768:6): avc:  denied  { map } for  pid=1759 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1
[   16.579118] random: sshd: uninitialized urandom read (32 bytes read)
[   17.105156] random: sshd: uninitialized urandom read (32 bytes read)
[   17.280457] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.19' (ECDSA) to the list of known hosts.
[   22.751642] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   22.843706] audit: type=1400 audit(1572742998.078:7): avc:  denied  { map } for  pid=1777 comm="syz-executor026" path="/root/syz-executor026737165" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
[   22.846288] 
[   22.871933] =============================
[   22.876127] WARNING: suspicious RCU usage
[   22.880254] 4.14.151+ #0 Not tainted
[   22.883952] -----------------------------
[   22.888139] ./include/linux/radix-tree.h:238 suspicious rcu_dereference_check() usage!
[   22.896191] 
[   22.896191] other info that might help us debug this:
[   22.896191] 
[   22.904312] 
[   22.904312] rcu_scheduler_active = 2, debug_locks = 1
[   22.910954] 2 locks held by syz-executor026/1777:
[   22.915775]  #0:  (&sb->s_type->i_mutex_key#10){+.+.}, at: [<        (ptrval)>] shmem_add_seals+0x12b/0xf80
[   22.926367]  #1:  (&(&mapping->tree_lock)->rlock){-...}, at: [<        (ptrval)>] shmem_add_seals+0x2e1/0xf80
[   22.936509] 
[   22.936509] stack backtrace:
[   22.940986] CPU: 0 PID: 1777 Comm: syz-executor026 Not tainted 4.14.151+ #0
[   22.948170] Call Trace:
[   22.950780]  dump_stack+0xca/0x134
[   22.954321]  shmem_add_seals+0x9d2/0xf80
[   22.958501]  ? shmem_file_llseek+0x220/0x220
[   22.962997]  ? vfs_write+0x35d/0x4d0
[   22.966698]  ? check_preemption_disabled+0x35/0x1f0
[   22.971827]  shmem_fcntl+0xea/0x120
[   22.975819]  do_fcntl+0x5c8/0xd20
[   22.979359]  ? f_getown+0xa0/0xa0
[   22.982812]  ? vfs_write+0x319/0x4d0
[   22.986980]  ? selinux_file_fcntl+0x86/0x140
[   22.991469]  SyS_fcntl+0xc6/0x100
[   22.994903]  ? do_fcntl+0xd20/0xd20
[   22.998573]  do_syscall_64+0x19b/0x520
[   23.002949]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   23.008145] RIP: 0033:0x440189
[   23.011328] RSP: 002b:00007fffaa555268 EFLAGS: 00000246 ORIG_RAX: 0000000000000048
[   23.020068] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440189
[   23.027329] RDX: 0000000000000008 RSI: 0000000000000409 RDI: 0000000000000003
[   23.034641] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
[   23.041913] R10: 00000000000