[....] 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: [   36.991151] random: sshd: uninitialized urandom read (32 bytes read)
[   37.455781] audit: type=1400 audit(1539948533.903:6): avc:  denied  { map } for  pid=1773 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
[   37.486504] random: sshd: uninitialized urandom read (32 bytes read)
[   37.949342] random: sshd: uninitialized urandom read (32 bytes read)
[   54.265072] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts.
[   59.771757] random: sshd: uninitialized urandom read (32 bytes read)
executing program
executing program
executing program
executing program
executing program
executing program
[   59.861243] audit: type=1400 audit(1539948556.313:7): avc:  denied  { map } for  pid=1797 comm="syz-executor572" path="/root/syz-executor572926642" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
[   59.894955] ------------[ cut here ]------------
[   59.899793] WARNING: CPU: 1 PID: 68 at fs/direct-io.c:293 dio_complete+0x578/0x800
[   59.907488] Kernel panic - not syncing: panic_on_warn set ...
[   59.907488] 
[   59.914839] CPU: 1 PID: 68 Comm: kworker/1:1 Not tainted 4.14.77+ #21
[   59.921408] Workqueue: dio/sda1 dio_aio_complete_work
[   59.926590] Call Trace:
[   59.929174]  dump_stack+0xb9/0x11b
[   59.932703]  ? dio_complete+0x550/0x800
[   59.936659]  panic+0x1bf/0x3a4
[   59.939962]  ? add_taint.cold.4+0x16/0x16
[   59.944096]  ? __probe_kernel_read+0x163/0x1c0
[   59.948663]  ? dio_complete+0x578/0x800
[   59.952626]  __warn.cold.7+0x148/0x185
[   59.956503]  ? dio_complete+0x578/0x800
[   59.960681]  report_bug+0x1f7/0x26c
[   59.964929]  do_error_trap+0x1ba/0x2c0
[   59.968806]  ? math_error+0x2d0/0x2d0
[   59.972592]  ? clear_shadow_entry+0x190/0x190
[   59.977085]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   59.982220]  invalid_op+0x18/0x40
[   59.985663] RIP: 0010:dio_complete+0x578/0x800
[   59.990311] RSP: 0018:ffff8801d6c4fd10 EFLAGS: 00010297
[   59.995809] RAX: ffff8801d6c40000 RBX: ffff8801d665c000 RCX: 0000000000000000
[   60.003171] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801d6c40024
[   60.010525] RBP: 0000000000010000 R08: 0000000000000001 R09: 0000000000000000
[   60.017777] R10: ffff8801d6c40880 R11: 0000000000000001 R12: ffff8801c40244a8
[   60.025042] R13: 0000000000010000 R14: 0000000000000003 R15: ffff8801d665c098
[   60.032573]  ? ext4_update_bh_state+0xe0/0xe0
[   60.037057]  process_one_work+0x86e/0x15c0
[   60.041282]  ? pwq_dec_nr_in_flight+0x2b0/0x2b0
[   60.045948]  worker_thread+0xdc/0x1000
[   60.049832]  ? process_one_work+0x15c0/0x15c0
[   60.054311]  ? process_one_work+0x15c0/0x15c0
[   60.058790]  kthread+0x348/0x420
[   60.062139]  ? kthread_create_on_node+0xe0/0xe0
[   60.066791]  ret_from_fork+0x3a/0x50
[   60.070833] Kernel Offset: 0x10800000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[   60.081760] Rebooting in 86400 seconds..