[....] 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[   30.695568] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   35.082663] random: sshd: uninitialized urandom read (32 bytes read)
[   35.422489] random: sshd: uninitialized urandom read (32 bytes read)
[   36.779766] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.39' (ECDSA) to the list of known hosts.
[   42.334512] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/03 15:27:51 fuzzer started
[   43.469070] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/03 15:27:53 dialing manager at 10.128.0.26:34161
2018/07/03 15:27:58 syscalls: 1541
2018/07/03 15:27:58 code coverage: enabled
2018/07/03 15:27:58 comparison tracing: ioctl(KCOV_TRACE_CMP) failed: errno 524
2018/07/03 15:27:58 setuid sandbox: enabled
2018/07/03 15:27:58 namespace sandbox: enabled
2018/07/03 15:27:58 fault injection: enabled
2018/07/03 15:27:58 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2018/07/03 15:27:58 net packed injection: enabled
[   51.309347] random: crng init done
[  110.152637] ==================================================================
[  110.160068] BUG: KMSAN: uninit-value in sg_init_one+0x1f7/0x290
[  110.166131] CPU: 0 PID: 8 Comm: ksoftirqd/0 Not tainted 4.17.0+ #17
[  110.172512] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  110.181843] Call Trace:
[  110.184409]  dump_stack+0x185/0x1d0
[  110.188011]  kmsan_report+0x188/0x2a0
[  110.191787]  __msan_warning_32+0x70/0xc0
[  110.195828]  sg_init_one+0x1f7/0x290
[  110.199521]  try_fill_recv+0x6ed/0x2580
[  110.203476]  virtnet_poll+0xfe3/0x1420
[  110.207336]  ? kmsan_set_origin_inline+0x6b/0x120
[  110.212163]  ? refill_work+0x2c0/0x2c0
[  110.216026]  net_rx_action+0x766/0x1a80
[  110.219977]  ? net_tx_action+0xad0/0xad0
[  110.224020]  __do_softirq+0x592/0x979
[  110.227797]  ? ksoftirqd_should_run+0x30/0x30
[  110.232265]  run_ksoftirqd+0x24/0x40
[  110.241441]  smpboot_thread_fn+0x4ac/0x9a0
[  110.245670]  kthread+0x4db/0x6c0
[  110.249023]  ? cpu_report_death+0x1f0/0x1f0
[  110.253323]  ? kthread_blkcg+0xf0/0xf0
[  110.257192]  ret_from_fork+0x35/0x40
[  110.260876] 
[  110.262486] Local variable description: ----list@net_rx_action
[  110.268427] Variable was created at:
[  110.272114]  net_rx_action+0x6e/0x1a80
[  110.275975]  __do_softirq+0x592/0x979
[  110.279742] ==================================================================
[  110.287076] Disabling lock debugging due to kernel taint
[  110.292498] Kernel panic - not syncing: panic_on_warn set ...
[  110.292498] 
[  110.299843] CPU: 0 PID: 8 Comm: ksoftirqd/0 Tainted: G    B             4.17.0+ #17
[  110.307609] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  110.316936] Call Trace:
[  110.319500]  dump_stack+0x185/0x1d0
[  110.323105]  panic+0x3d0/0x990
[  110.326279]  kmsan_report+0x29e/0x2a0
[  110.330062]  __msan_warning_32+0x70/0xc0
[  110.334097]  sg_init_one+0x1f7/0x290
[  110.337785]  try_fill_recv+0x6ed/0x2580
[  110.341738]  virtnet_poll+0xfe3/0x1420
[  110.345602]  ? kmsan_set_origin_inline+0x6b/0x120
[  110.350421]  ? refill_work+0x2c0/0x2c0
[  110.354281]  net_rx_action+0x766/0x1a80
[  110.358232]  ? net_tx_action+0xad0/0xad0
[  110.362276]  __do_softirq+0x592/0x979
[  110.366054]  ? ksoftirqd_should_run+0x30/0x30
[  110.370520]  run_ksoftirqd+0x24/0x40
[  110.374216]  smpboot_thread_fn+0x4ac/0x9a0
[  110.378428]  kthread+0x4db/0x6c0
[  110.381769]  ? cpu_report_death+0x1f0/0x1f0
[  110.386066]  ? kthread_blkcg+0xf0/0xf0
[  110.389931]  ret_from_fork+0x35/0x40
[  110.394199] Dumping ftrace buffer:
[  110.397719]    (ftrace buffer empty)
[  110.401402] Kernel Offset: disabled
[  110.405012] Rebooting in 86400 seconds..