[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   20.161548] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   25.015073] random: sshd: uninitialized urandom read (32 bytes read)
[   25.561584] random: sshd: uninitialized urandom read (32 bytes read)
[   26.290795] random: sshd: uninitialized urandom read (32 bytes read)
[   26.441261] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.24' (ECDSA) to the list of known hosts.
[   31.955850] random: sshd: uninitialized urandom read (32 bytes read)
2018/05/01 23:17:32 parsed 1 programs
2018/05/01 23:17:32 executed programs: 0
[   32.416712] IPVS: ftp: loaded support on port[0] = 21
[   32.465700] WARNING: CPU: 1 PID: 4520 at sound/core/pcm_lib.c:2057 __snd_pcm_lib_xfer+0x7c3/0x1d10
[   32.474857] Kernel panic - not syncing: panic_on_warn set ...
[   32.474857] 
[   32.482208] CPU: 1 PID: 4520 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #52
[   32.489369] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.498849] Call Trace:
[   32.501426]  dump_stack+0x1b9/0x294
[   32.505045]  ? dump_stack_print_info.cold.2+0x52/0x52
[   32.510224]  ? __snd_pcm_lib_xfer+0x790/0x1d10
[   32.514792]  panic+0x22f/0x4de
[   32.517965]  ? add_taint.cold.5+0x16/0x16
[   32.522097]  ? __warn.cold.8+0x148/0x1b3
[   32.526149]  ? __warn.cold.8+0x117/0x1b3
[   32.530213]  ? __snd_pcm_lib_xfer+0x7c3/0x1d10
[   32.534782]  __warn.cold.8+0x163/0x1b3
[   32.538650]  ? __snd_pcm_lib_xfer+0x7c3/0x1d10
[   32.543238]  report_bug+0x252/0x2d0
[   32.546865]  do_error_trap+0x1de/0x490
[   32.550732]  ? math_error+0x420/0x420
[   32.554536]  ? debug_check_no_locks_freed+0x310/0x310
[   32.559708]  ? get_futex_key+0x1e90/0x1e90
[   32.563925]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   32.568756]  do_invalid_op+0x1b/0x20
[   32.572466]  invalid_op+0x14/0x20
[   32.575904] RIP: 0010:__snd_pcm_lib_xfer+0x7c3/0x1d10
[   32.581071] RSP: 0018:ffff8801d97b7898 EFLAGS: 00010293
[   32.586424] RAX: ffff8801ad00e0c0 RBX: ffff8801d965e100 RCX: 0000000000000000
[   32.593683] RDX: 0000000000000000 RSI: ffffffff85c3d333 RDI: ffff8801d965e418
[   32.600932] RBP: ffff8801d97b7b38 R08: 0000000000000000 R09: 0000000000000000
[   32.608194] R10: 0000000000000003 R11: 0000000000000000 R12: ffffffff884945c0
[   32.615443] R13: 0000000000000000 R14: ffff8801d965e100 R15: ffff8801cdd2c940
[   32.622707]  ? __snd_pcm_lib_xfer+0x7c3/0x1d10
[   32.627280]  ? __snd_pcm_lib_xfer+0x7c3/0x1d10
[   32.631850]  ? graph_lock+0x170/0x170
[   32.635634]  ? exit_robust_list+0x290/0x290
[   32.639939]  ? pcm_lib_apply_appl_ptr+0x5a0/0x5a0
[   32.644765]  ? find_held_lock+0x36/0x1c0
[   32.648811]  ? lock_downgrade+0x8e0/0x8e0
[   32.652940]  ? lock_release+0xa10/0xa10
[   32.656897]  ? check_same_owner+0x320/0x320
[   32.661200]  ? vm_insert_mixed_mkwrite+0x40/0x40
[   32.665941]  ? graph_lock+0x170/0x170
[   32.669724]  ? __kmalloc+0x25/0x760
[   32.673332]  ? __might_sleep+0x95/0x190
[   32.677310]  ? snd_pcm_ioctl_xfern_compat+0x180/0x330
[   32.682493]  snd_pcm_ioctl_xfern_compat+0x266/0x330
[   32.687492]  ? __sanitizer_cov_trace_switch+0x53/0x90
[   32.692663]  snd_pcm_ioctl_compat+0xc96/0x1c90
[   32.697240]  ? snd_pcm_status_user_x32+0x710/0x710
[   32.702155]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   32.707675]  ? __fget_light+0x2ef/0x430
[   32.711631]  ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[   32.717161]  ? fget_raw+0x20/0x20
[   32.720613]  ? __handle_mm_fault+0x4310/0x4310
[   32.725187]  ? __ia32_compat_sys_futex+0x3de/0x5e0
[   32.730103]  ? __x32_compat_sys_get_robust_list+0x430/0x430
[   32.735802]  ? __sanitizer_cov_trace_switch+0x53/0x90
[   32.740986]  ? snd_pcm_status_user_x32+0x710/0x710
[   32.745907]  __ia32_compat_sys_ioctl+0x221/0x640
[   32.750659]  do_fast_syscall_32+0x345/0xf9b
[   32.754968]  ? do_int80_syscall_32+0x880/0x880
[   32.759532]  ? syscall_slow_exit_work+0x4f0/0x4f0
[   32.764366]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   32.769894]  ? syscall_return_slowpath+0x30f/0x5c0
[   32.774809]  ? sysret32_from_system_call+0x5/0x46
[   32.779639]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   32.784468]  entry_SYSENTER_compat+0x70/0x7f
[   32.788855] RIP: 0023:0xf7f51cb9
[   32.792213] RSP: 002b:00000000ffafd6ac EFLAGS: 00000282 ORIG_RAX: 0000000000000036
[   32.799901] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000800c4153
[   32.807152] RDX: 0000000020000040 RSI: 0000000000000000 RDI: 0000000000000000
[   32.814413] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   32.821664] R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
[   32.828912] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   32.836823] Dumping ftrace buffer:
[   32.840488]    (ftrace buffer empty)
[   32.844179] Kernel Offset: disabled
[   32.847789] Rebooting in 86400 seconds..