[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[   11.274361] random: sshd: uninitialized urandom read (32 bytes read)
[   11.417152] audit: type=1400 audit(1572590319.699:6): avc:  denied  { map } for  pid=1758 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
[   11.446729] random: sshd: uninitialized urandom read (32 bytes read)
[   12.083915] urandom_read: 1 callbacks suppressed
[   12.083921] random: sshd: uninitialized urandom read (32 bytes read)

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.0.62' (ECDSA) to the list of known hosts.
syzkaller login: [   17.600999] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   17.693044] audit: type=1400 audit(1572590325.979:7): avc:  denied  { map } for  pid=1770 comm="syz-executor985" path="/root/syz-executor985546439" 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
[   17.722188] 
[   17.723926] =============================
[   17.728053] WARNING: suspicious RCU usage
[   17.732188] 4.14.151+ #0 Not tainted
[   17.735876] -----------------------------
[   17.740002] ./include/linux/radix-tree.h:238 suspicious rcu_dereference_check() usage!
[   17.748035] 
[   17.748035] other info that might help us debug this:
[   17.748035] 
[   17.756159] 
[   17.756159] rcu_scheduler_active = 2, debug_locks = 1
[   17.762819] 2 locks held by syz-executor985/1770:
[   17.767639]  #0:  (&sb->s_type->i_mutex_key#10){+.+.}, at: [<        (ptrval)>] shmem_add_seals+0x12b/0xf80
[   17.777542]  #1:  (&(&mapping->tree_lock)->rlock){-...}, at: [<        (ptrval)>] shmem_add_seals+0x2e1/0xf80
[   17.787619] 
[   17.787619] stack backtrace:
[   17.792112] CPU: 1 PID: 1770 Comm: syz-executor985 Not tainted 4.14.151+ #0
[   17.799187] Call Trace:
[   17.801760]  dump_stack+0xca/0x134
[   17.805281]  shmem_add_seals+0x9d2/0xf80
[   17.809339]  ? shmem_file_llseek+0x220/0x220
[   17.813729]  ? vfs_write+0x35d/0x4d0
[   17.817420]  ? check_preemption_disabled+0x35/0x1f0
[   17.822415]  shmem_fcntl+0xea/0x120
[   17.826020]  do_fcntl+0x5c8/0xd20
[   17.829584]  ? f_getown+0xa0/0xa0
[   17.833030]  ? vfs_write+0x319/0x4d0
[   17.836734]  ? selinux_file_fcntl+0x86/0x140
[   17.841132]  SyS_fcntl+0xc6/0x100
[   17.844567]  ? do_fcntl+0xd20/0xd20
[   17.848219]  do_syscall_64+0x19b/0x520
[   17.852190]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   17.857381] RIP: 0033:0x440189
[   17.860557] RSP: 002b:00007fff0f42cb48 EFLAGS: 00000246 ORIG_RAX: 0000000000000048
[   17.868280] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440189
[   17.875546] RDX: 0000000000000008 RSI: 0000000000000409 RDI: 0000000000000003
[   17.882795] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
[   17.890047] R10: 0000000000000000 R11: 0