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

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   32.588719] random: sshd: uninitialized urandom read (32 bytes read)
[   32.801139] kauditd_printk_skb: 9 callbacks suppressed
[   32.801148] audit: type=1400 audit(1555586065.042:35): avc:  denied  { map } for  pid=6818 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
[   32.860465] random: sshd: uninitialized urandom read (32 bytes read)
[   33.383557] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.192' (ECDSA) to the list of known hosts.
[   39.208689] urandom_read: 1 callbacks suppressed
[   39.208694] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   39.330969] audit: type=1400 audit(1555586071.572:36): avc:  denied  { map } for  pid=6831 comm="syz-executor265" path="/root/syz-executor265486647" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
[   39.362841] ------------[ cut here ]------------
[   39.367687] WARNING: CPU: 0 PID: 1401 at drivers/tty/tty_ioctl.c:318 tty_set_termios+0x74a/0x870
[   39.376592] Kernel panic - not syncing: panic_on_warn set ...
[   39.376592] 
[   39.383934] CPU: 0 PID: 1401 Comm: kworker/u5:0 Not tainted 4.14.112 #2
[   39.390664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   39.400039] Workqueue: hci0 hci_power_on
[   39.404088] Call Trace:
[   39.406693]  dump_stack+0x138/0x19c
[   39.410302]  panic+0x1f2/0x438
[   39.413474]  ? add_taint.cold+0x16/0x16
[   39.417431]  ? tty_set_termios+0x74a/0x870
[   39.421646]  ? tty_set_termios+0x74a/0x870
[   39.425857]  __warn.cold+0x2f/0x34
[   39.429377]  ? ist_end_non_atomic+0x10/0x10
[   39.433675]  ? tty_set_termios+0x74a/0x870
[   39.437905]  report_bug+0x216/0x254
[   39.441510]  do_error_trap+0x1bb/0x310
[   39.445375]  ? math_error+0x360/0x360
[   39.449159]  ? trace_hardirqs_on+0x10/0x10
[   39.453375]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   39.458198]  do_invalid_op+0x1b/0x20
[   39.461898]  invalid_op+0x1b/0x40
[   39.465335] RIP: 0010:tty_set_termios+0x74a/0x870
[   39.470158] RSP: 0018:ffff8880a6927ad8 EFLAGS: 00010297
[   39.475499] RAX: ffff8880a691e580 RBX: ffff8880a6927b80 RCX: 0000000000000000
[   39.482746] RDX: 0000000000000000 RSI: ffff8880a6927be8 RDI: ffff88821910e038
[   39.489993] RBP: ffff8880a6927ba8 R08: dffffc0000000000 R09: ffff8880a6927858
[   39.497246] R10: ffff8880a6927ca0 R11: ffff8880a691e580 R12: 1ffff11014d24f60
[   39.504494] R13: ffff8880a6927be8 R14: ffff88821910e000 R15: ffff88808864cc00
[   39.511754]  ? tty_set_termios+0x74a/0x870
[   39.515991]  ? hci_dev_do_open+0x33/0xf90
[   39.520132]  ? tty_wait_until_sent+0x4c0/0x4c0
[   39.524697]  ? __mutex_lock+0x36a/0x1470
[   39.528752]  ? tty_termios_encode_baud_rate+0x2f5/0x3f0
[   39.534095]  hci_uart_set_baudrate+0x145/0x190
[   39.538670]  ? hci_uart_set_speeds+0x90/0x90
[   39.543071]  ? save_trace+0x290/0x290
[   39.546848]  ? process_one_work+0x787/0x1610
[   39.551236]  hci_uart_setup+0x98/0x430
[   39.555099]  ? hci_uart_set_baudrate+0x190/0x190
[   39.559844]  hci_dev_do_open+0x57f/0xf90
[   39.563888]  ? check_preemption_disabled+0x3c/0x250
[   39.568889]  hci_power_on+0x8d/0x3d0
[   39.572589]  process_one_work+0x868/0x1610
[   39.576804]  ? pwq_dec_nr_in_flight+0x2e0/0x2e0
[   39.581454]  worker_thread+0x5d9/0x1050
[   39.585412]  kthread+0x31c/0x430
[   39.588755]  ? process_one_work+0x1610/0x1610
[   39.593228]  ? kthread_create_on_node+0xd0/0xd0
[   39.597880]  ret_from_fork+0x3a/0x50
[   39.602638] Kernel Offset: disabled
[   39.606335] Rebooting in 86400 seconds..