[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   20.415924] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   25.770894] random: sshd: uninitialized urandom read (32 bytes read)
[   26.128535] random: sshd: uninitialized urandom read (32 bytes read)
[   27.034528] random: sshd: uninitialized urandom read (32 bytes read)
[   27.208361] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.44' (ECDSA) to the list of known hosts.
[   32.717406] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/15 19:48:28 parsed 1 programs
[   34.501477] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/15 19:48:30 executed programs: 0
[   35.955832] IPVS: ftp: loaded support on port[0] = 21
[   36.384581] WARNING: CPU: 0 PID: 4608 at sound/core/rawmidi.c:1163 __snd_rawmidi_transmit_ack+0x263/0x2f0
[   36.394499] Kernel panic - not syncing: panic_on_warn set ...
[   36.394499] 
[   36.401897] CPU: 0 PID: 4608 Comm: syz-executor0 Not tainted 4.18.0-rc4+ #51
[   36.409081] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   36.418511] Call Trace:
[   36.421115]  dump_stack+0x1c9/0x2b4
[   36.424748]  ? dump_stack_print_info.cold.2+0x52/0x52
[   36.429946]  panic+0x238/0x4e7
[   36.433134]  ? add_taint.cold.5+0x16/0x16
[   36.437299]  ? __warn.cold.8+0x148/0x1ba
[   36.441359]  ? __warn.cold.8+0x117/0x1ba
[   36.445431]  ? __snd_rawmidi_transmit_ack+0x263/0x2f0
[   36.450618]  __warn.cold.8+0x163/0x1ba
[   36.454494]  ? __snd_rawmidi_transmit_ack+0x263/0x2f0
[   36.459686]  report_bug+0x252/0x2d0
[   36.463319]  do_error_trap+0x1fc/0x4d0
[   36.467205]  ? math_error+0x3e0/0x3e0
[   36.471046]  ? lock_downgrade+0x8f0/0x8f0
[   36.475196]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   36.480048]  do_invalid_op+0x1b/0x20
[   36.483765]  invalid_op+0x14/0x20
[   36.487215] RIP: 0010:__snd_rawmidi_transmit_ack+0x263/0x2f0
[   36.492987] Code: ba 01 00 00 00 be 03 00 00 00 e8 88 4a 83 fb e8 43 fe a2 fb 89 d8 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 2d fe a2 fb <0f> 0b e9 72 fe ff ff e8 e1 dc e0 fb e9 1b ff ff ff bb ea ff ff ff 
[   36.512178] RSP: 0018:ffff8801abb8f720 EFLAGS: 00010093
[   36.517531] RAX: ffff8801d8b500c0 RBX: 0000000000000002 RCX: ffffffff85d90b82
[   36.524786] RDX: 0000000000000000 RSI: ffffffff85d90d13 RDI: 0000000000000006
[   36.532057] RBP: ffff8801abb8f760 R08: ffff8801d8b500c0 R09: ffffed003b128cb4
[   36.539587] R10: ffffed003b128cb4 R11: ffff8801d89465a3 R12: ffff8801cd646240
[   36.546962] R13: 0000000000000802 R14: 0000000000000002 R15: ffff8801ab48e5c0
[   36.554248]  ? __snd_rawmidi_transmit_ack+0xd2/0x2f0
[   36.559360]  ? __snd_rawmidi_transmit_ack+0x263/0x2f0
[   36.564570]  snd_virmidi_output_trigger+0x3ae/0x6b0
[   36.569596]  ? snd_virmidi_input_trigger+0xc0/0xc0
[   36.574532]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   36.579548]  snd_rawmidi_kernel_write1+0x519/0x700
[   36.584485]  snd_rawmidi_write+0x2ea/0xde0
[   36.588732]  ? snd_rawmidi_release+0xf0/0xf0
[   36.593128]  ? __fget+0x414/0x670
[   36.596571]  ? expand_files.part.8+0x9c0/0x9c0
[   36.601268]  ? trace_hardirqs_on+0x10/0x10
[   36.605509]  __vfs_write+0x117/0x9f0
[   36.609244]  ? __fget_light+0x2f7/0x440
[   36.613399]  ? snd_rawmidi_release+0xf0/0xf0
[   36.617818]  ? kernel_read+0x120/0x120
[   36.621720]  ? graph_lock+0x170/0x170
[   36.625530]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   36.631076]  ? security_file_permission+0x1c6/0x240
[   36.636091]  ? rw_verify_area+0x118/0x360
[   36.640493]  vfs_write+0x1f8/0x560
[   36.644046]  ksys_write+0x101/0x260
[   36.647673]  ? __ia32_sys_read+0xb0/0xb0
[   36.651741]  ? kasan_check_read+0x11/0x20
[   36.655886]  __ia32_sys_write+0x71/0xb0
[   36.659877]  do_fast_syscall_32+0x34d/0xfb2
[   36.664189]  ? do_int80_syscall_32+0x890/0x890
[   36.668922]  ? _raw_spin_unlock_irq+0x27/0x70
[   36.673431]  ? finish_task_switch+0x1d3/0x870
[   36.677933]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   36.683489]  ? syscall_return_slowpath+0x31d/0x5e0
[   36.688416]  ? sysret32_from_system_call+0x5/0x46
[   36.693250]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   36.698097]  entry_SYSENTER_compat+0x70/0x7f
[   36.702491] RIP: 0023:0xf7f5fcb9
[   36.705846] Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
[   36.725052] RSP: 002b:00000000f7f190ac EFLAGS: 00000282 ORIG_RAX: 0000000000000004
[   36.732766] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000200000c0
[   36.740036] RDX: 000000000000ff4c RSI: 0000000000000000 RDI: 0000000000000000
[   36.747475] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   36.754732] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   36.762009] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   36.770082] Dumping ftrace buffer:
[   36.773817]    (ftrace buffer empty)
[   36.777511] Kernel Offset: disabled
[   36.781130] Rebooting in 86400 seconds..