[   11.562561] random: sshd: uninitialized urandom read (32 bytes read)
[   11.656845] random: sshd: uninitialized urandom read (32 bytes read)
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[   11.865477] audit: type=1400 audit(1572771943.286:6): 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
[   11.908567] random: sshd: uninitialized urandom read (32 bytes read)

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.0.208' (ECDSA) to the list of known hosts.
syzkaller login: [   17.997332] urandom_read: 2 callbacks suppressed
[   17.997336] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   18.090811] audit: type=1400 audit(1572771949.516:7): avc:  denied  { map } for  pid=1771 comm="syz-executor465" path="/root/syz-executor465108009" 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
[   18.092689] 
[   18.118753] =============================
[   18.122874] WARNING: suspicious RCU usage
[   18.127048] 4.14.151+ #0 Not tainted
[   18.130735] -----------------------------
[   18.134854] ./include/linux/radix-tree.h:238 suspicious rcu_dereference_check() usage!
[   18.142877] 
[   18.142877] other info that might help us debug this:
[   18.142877] 
[   18.150993] 
[   18.150993] rcu_scheduler_active = 2, debug_locks = 1
[   18.157633] 2 locks held by syz-executor465/1771:
[   18.162446]  #0:  (&sb->s_type->i_mutex_key#10){+.+.}, at: [<        (ptrval)>] shmem_add_seals+0x12b/0xf80
[   18.172355]  #1:  (&(&mapping->tree_lock)->rlock){-...}, at: [<        (ptrval)>] shmem_add_seals+0x2e1/0xf80
[   18.182391] 
[   18.182391] stack backtrace:
[   18.186863] CPU: 0 PID: 1771 Comm: syz-executor465 Not tainted 4.14.151+ #0
[   18.193932] Call Trace:
[   18.196522]  dump_stack+0xca/0x134
[   18.200045]  shmem_add_seals+0x9d2/0xf80
[   18.204089]  ? shmem_file_llseek+0x220/0x220
[   18.208476]  ? vfs_write+0x35d/0x4d0
[   18.212164]  ? check_preemption_disabled+0x35/0x1f0
[   18.217155]  shmem_fcntl+0xea/0x120
[   18.220758]  do_fcntl+0x5c8/0xd20
[   18.224193]  ? f_getown+0xa0/0xa0
[   18.227622]  ? vfs_write+0x319/0x4d0
[   18.231315]  ? selinux_file_fcntl+0x86/0x140
[   18.235704]  SyS_fcntl+0xc6/0x100
[   18.239131]  ? do_fcntl+0xd20/0xd20
[   18.242733]  do_syscall_64+0x19b/0x520
[   18.246601]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   18.251763] RIP: 0033:0x4401b9
[   18.254931] RSP: 002b:00007ffeb659a198 EFLAGS: 00000246 ORIG_RAX: 0000000000000048
[   18.262613] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401b9
[   18.269874] RDX: 0000000000000009 RSI: 0000000000000409 RDI: 0000000000000003
[   18.277128] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
[   18.284382] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a40