[....] 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[   31.329687] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   33.640813] random: sshd: uninitialized urandom read (32 bytes read)
[   34.045684] random: sshd: uninitialized urandom read (32 bytes read)
[   35.444411] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.5' (ECDSA) to the list of known hosts.
[   41.056684] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/04 10:45:18 fuzzer started
[   42.421986] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/04 10:45:20 dialing manager at 10.128.0.26:34161
2018/07/04 10:45:24 syscalls: 1541
2018/07/04 10:45:24 code coverage: enabled
2018/07/04 10:45:24 comparison tracing: ioctl(KCOV_TRACE_CMP) failed: errno 524
2018/07/04 10:45:24 setuid sandbox: enabled
2018/07/04 10:45:24 namespace sandbox: enabled
2018/07/04 10:45:24 fault injection: enabled
2018/07/04 10:45:24 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2018/07/04 10:45:24 net packed injection: enabled
[   51.214873] random: crng init done
[   72.163607] ==================================================================
[   72.171029] BUG: KMSAN: uninit-value in sg_init_one+0x1f7/0x290
[   72.177095] CPU: 0 PID: 8 Comm: ksoftirqd/0 Not tainted 4.17.0+ #17
[   72.183503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   72.192863] Call Trace:
[   72.195460]  dump_stack+0x185/0x1d0
[   72.199087]  kmsan_report+0x188/0x2a0
[   72.202893]  __msan_warning_32+0x70/0xc0
[   72.206951]  sg_init_one+0x1f7/0x290
[   72.210669]  try_fill_recv+0x6ed/0x2580
[   72.214660]  virtnet_poll+0xfe3/0x1420
[   72.218555]  ? kmsan_set_origin_inline+0x6b/0x120
[   72.223406]  ? refill_work+0x2c0/0x2c0
[   72.227302]  net_rx_action+0x766/0x1a80
[   72.231284]  ? net_tx_action+0xad0/0xad0
[   72.235351]  __do_softirq+0x592/0x979
[   72.239166]  ? ksoftirqd_should_run+0x30/0x30
[   72.243664]  run_ksoftirqd+0x24/0x40
[   72.247385]  smpboot_thread_fn+0x4ac/0x9a0
[   72.251632]  kthread+0x4db/0x6c0
[   72.254997]  ? cpu_report_death+0x1f0/0x1f0
[   72.259318]  ? kthread_blkcg+0xf0/0xf0
[   72.263189]  ret_from_fork+0x35/0x40
[   72.266883] 
[   72.268505] Local variable description: ----list@net_rx_action
[   72.274443] Variable was created at:
[   72.278139]  net_rx_action+0x6e/0x1a80
[   72.281997]  __do_softirq+0x592/0x979
[   72.285774] ==================================================================
[   72.293101] Disabling lock debugging due to kernel taint
[   72.298526] Kernel panic - not syncing: panic_on_warn set ...
[   72.298526] 
[   72.305863] CPU: 0 PID: 8 Comm: ksoftirqd/0 Tainted: G    B             4.17.0+ #17
[   72.313626] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   72.322951] Call Trace:
[   72.325527]  dump_stack+0x185/0x1d0
[   72.329135]  panic+0x3d0/0x990
[   72.332306]  kmsan_report+0x29e/0x2a0
[   72.336081]  __msan_warning_32+0x70/0xc0
[   72.340115]  sg_init_one+0x1f7/0x290
[   72.343811]  try_fill_recv+0x6ed/0x2580
[   72.347763]  virtnet_poll+0xfe3/0x1420
[   72.351624]  ? kmsan_set_origin_inline+0x6b/0x120
[   72.356440]  ? refill_work+0x2c0/0x2c0
[   72.360299]  net_rx_action+0x766/0x1a80
[   72.364248]  ? net_tx_action+0xad0/0xad0
[   72.368284]  __do_softirq+0x592/0x979
[   72.372063]  ? ksoftirqd_should_run+0x30/0x30
[   72.376530]  run_ksoftirqd+0x24/0x40
[   72.380217]  smpboot_thread_fn+0x4ac/0x9a0
[   72.384441]  kthread+0x4db/0x6c0
[   72.387789]  ? cpu_report_death+0x1f0/0x1f0
[   72.392092]  ? kthread_blkcg+0xf0/0xf0
[   72.395955]  ret_from_fork+0x35/0x40
[   72.400156] Dumping ftrace buffer:
[   72.403675]    (ftrace buffer empty)
[   72.407355] Kernel Offset: disabled
[   72.410966] Rebooting in 86400 seconds..