[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   32.565409] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   35.647529] random: sshd: uninitialized urandom read (32 bytes read)
[   36.150987] random: sshd: uninitialized urandom read (32 bytes read)
[   37.519405] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.21' (ECDSA) to the list of known hosts.
[   43.129320] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/02 15:54:49 fuzzer started
[   44.608765] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/02 15:54:52 dialing manager at 10.128.0.26:36811
2018/07/02 15:54:55 syscalls: 1518
2018/07/02 15:54:55 code coverage: enabled
2018/07/02 15:54:55 comparison tracing: ioctl(KCOV_TRACE_CMP) failed: errno 524
2018/07/02 15:54:55 setuid sandbox: enabled
2018/07/02 15:54:55 namespace sandbox: enabled
2018/07/02 15:54:55 fault injection: enabled
2018/07/02 15:54:55 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2018/07/02 15:54:55 net packed injection: enabled
[   50.587805] random: crng init done
[   72.298619] ==================================================================
[   72.306049] BUG: KMSAN: uninit-value in sg_init_one+0x1f7/0x290
[   72.312090] CPU: 0 PID: 8 Comm: ksoftirqd/0 Not tainted 4.17.0+ #16
[   72.318477] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   72.327807] Call Trace:
[   72.330374]  dump_stack+0x185/0x1d0
[   72.333984]  kmsan_report+0x188/0x2a0
[   72.337766]  __msan_warning_32+0x70/0xc0
[   72.341807]  sg_init_one+0x1f7/0x290
[   72.345520]  try_fill_recv+0x6ed/0x2580
[   72.349483]  virtnet_poll+0xfe3/0x1420
[   72.353350]  ? kmsan_set_origin_inline+0x6b/0x120
[   72.358176]  ? refill_work+0x2c0/0x2c0
[   72.362045]  net_rx_action+0x766/0x1a80
[   72.366010]  ? net_tx_action+0xad0/0xad0
[   72.370231]  __do_softirq+0x592/0x979
[   72.374013]  ? ksoftirqd_should_run+0x30/0x30
[   72.378484]  run_ksoftirqd+0x24/0x40
[   72.382176]  smpboot_thread_fn+0x4ac/0x9a0
[   72.386396]  kthread+0x4db/0x6c0
[   72.389741]  ? cpu_report_death+0x1f0/0x1f0
[   72.394043]  ? kthread_blkcg+0xf0/0xf0
[   72.397910]  ret_from_fork+0x35/0x40
[   72.401605] 
[   72.403210] Local variable description: ----list@net_rx_action
[   72.409154] Variable was created at:
[   72.412854]  net_rx_action+0x6e/0x1a80
[   72.416728]  __do_softirq+0x592/0x979
[   72.420499] ==================================================================
[   72.427836] Disabling lock debugging due to kernel taint
[   72.433261] Kernel panic - not syncing: panic_on_warn set ...
[   72.433261] 
[   72.440604] CPU: 0 PID: 8 Comm: ksoftirqd/0 Tainted: G    B             4.17.0+ #16
[   72.448375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   72.458017] Call Trace:
[   72.460593]  dump_stack+0x185/0x1d0
[   72.464199]  panic+0x3d0/0x990
[   72.467377]  kmsan_report+0x29e/0x2a0
[   72.471161]  __msan_warning_32+0x70/0xc0
[   72.475202]  sg_init_one+0x1f7/0x290
[   72.478906]  try_fill_recv+0x6ed/0x2580
[   72.482877]  virtnet_poll+0xfe3/0x1420
[   72.486753]  ? kmsan_set_origin_inline+0x6b/0x120
[   72.491577]  ? refill_work+0x2c0/0x2c0
[   72.495448]  net_rx_action+0x766/0x1a80
[   72.499414]  ? net_tx_action+0xad0/0xad0
[   72.503463]  __do_softirq+0x592/0x979
[   72.507250]  ? ksoftirqd_should_run+0x30/0x30
[   72.511739]  run_ksoftirqd+0x24/0x40
[   72.515434]  smpboot_thread_fn+0x4ac/0x9a0
[   72.519651]  kthread+0x4db/0x6c0
[   72.523007]  ? cpu_report_death+0x1f0/0x1f0
[   72.527312]  ? kthread_blkcg+0xf0/0xf0
[   72.531184]  ret_from_fork+0x35/0x40
[   72.535514] Dumping ftrace buffer:
[   72.539037]    (ftrace buffer empty)
[   72.542736] Kernel Offset: disabled
[   72.546350] Rebooting in 86400 seconds..