[....] 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[   31.359693] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   36.315882] random: sshd: uninitialized urandom read (32 bytes read)
[   36.722333] random: sshd: uninitialized urandom read (32 bytes read)
[   38.067703] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.36' (ECDSA) to the list of known hosts.
[   43.603833] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/04 01:11:32 fuzzer started
[   45.146775] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/04 01:11:35 dialing manager at 10.128.0.26:34161
2018/07/04 01:11:38 syscalls: 1541
2018/07/04 01:11:38 code coverage: enabled
2018/07/04 01:11:38 comparison tracing: ioctl(KCOV_TRACE_CMP) failed: errno 524
2018/07/04 01:11:38 setuid sandbox: enabled
2018/07/04 01:11:38 namespace sandbox: enabled
2018/07/04 01:11:38 fault injection: enabled
2018/07/04 01:11:38 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2018/07/04 01:11:38 net packed injection: enabled
[   51.354947] random: crng init done
[   88.594081] ==================================================================
[   88.601507] BUG: KMSAN: uninit-value in virtnet_poll+0x5c8/0x1420
[   88.607737] CPU: 0 PID: 8 Comm: ksoftirqd/0 Not tainted 4.17.0+ #17
[   88.614131] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   88.623477] Call Trace:
[   88.626243]  dump_stack+0x185/0x1d0
[   88.629869]  kmsan_report+0x188/0x2a0
[   88.633668]  ? refill_work+0x2c0/0x2c0
[   88.637550]  __msan_warning_32+0x70/0xc0
[   88.641610]  ? net_rx_action+0x766/0x1a80
[   88.645755]  virtnet_poll+0x5c8/0x1420
[   88.649642]  ? kmsan_set_origin_inline+0x6b/0x120
[   88.654482]  ? __msan_poison_alloca+0x15c/0x1d0
[   88.659152]  ? call_function_single_interrupt+0xa/0x20
[   88.664428]  ? net_tx_action+0xad0/0xad0
[   88.668490]  ? refill_work+0x2c0/0x2c0
[   88.672465]  net_rx_action+0x766/0x1a80
[   88.676450]  ? net_tx_action+0xad0/0xad0
[   88.680504]  __do_softirq+0x592/0x979
[   88.684308]  ? ksoftirqd_should_run+0x30/0x30
[   88.688813]  run_ksoftirqd+0x24/0x40
[   88.692519]  smpboot_thread_fn+0x4ac/0x9a0
[   88.696752]  kthread+0x4db/0x6c0
[   88.700112]  ? cpu_report_death+0x1f0/0x1f0
[   88.704431]  ? kthread_blkcg+0xf0/0xf0
[   88.708318]  ret_from_fork+0x35/0x40
[   88.712126] 
[   88.713742] Local variable description: ----list@net_rx_action
[   88.719693] Variable was created at:
[   88.723406]  net_rx_action+0x6e/0x1a80
[   88.727290]  __do_softirq+0x592/0x979
[   88.731072] ==================================================================
[   88.738419] Disabling lock debugging due to kernel taint
[   88.743860] Kernel panic - not syncing: panic_on_warn set ...
[   88.743860] 
[   88.751202] CPU: 0 PID: 8 Comm: ksoftirqd/0 Tainted: G    B             4.17.0+ #17
[   88.758967] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   88.768294] Call Trace:
[   88.770862]  dump_stack+0x185/0x1d0
[   88.774466]  panic+0x3d0/0x990
[   88.777637]  kmsan_report+0x29e/0x2a0
[   88.781441]  ? refill_work+0x2c0/0x2c0
[   88.785314]  __msan_warning_32+0x70/0xc0
[   88.789367]  ? net_rx_action+0x766/0x1a80
[   88.793497]  virtnet_poll+0x5c8/0x1420
[   88.797358]  ? kmsan_set_origin_inline+0x6b/0x120
[   88.802178]  ? __msan_poison_alloca+0x15c/0x1d0
[   88.806822]  ? call_function_single_interrupt+0xa/0x20
[   88.812071]  ? net_tx_action+0xad0/0xad0
[   88.816104]  ? refill_work+0x2c0/0x2c0
[   88.819962]  net_rx_action+0x766/0x1a80
[   88.823928]  ? net_tx_action+0xad0/0xad0
[   88.827964]  __do_softirq+0x592/0x979
[   88.831743]  ? ksoftirqd_should_run+0x30/0x30
[   88.836210]  run_ksoftirqd+0x24/0x40
[   88.839906]  smpboot_thread_fn+0x4ac/0x9a0
[   88.844119]  kthread+0x4db/0x6c0
[   88.847461]  ? cpu_report_death+0x1f0/0x1f0
[   88.851761]  ? kthread_blkcg+0xf0/0xf0
[   88.855631]  ret_from_fork+0x35/0x40
[   88.859890] Dumping ftrace buffer:
[   88.863496]    (ftrace buffer empty)
[   88.867186] Kernel Offset: disabled
[   88.870788] Rebooting in 86400 seconds..