[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   30.876070] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.
[   31.488832] random: sshd: uninitialized urandom read (32 bytes read)
[   31.776589] random: sshd: uninitialized urandom read (32 bytes read)

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   33.003400] random: sshd: uninitialized urandom read (32 bytes read)
[   76.854608] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.29' (ECDSA) to the list of known hosts.
[   82.343816] random: sshd: uninitialized urandom read (32 bytes read)
2018/06/14 08:30:33 parsed 1 programs
[   83.622780] random: cc1: uninitialized urandom read (8 bytes read)
2018/06/14 08:30:35 executed programs: 0
[   84.764822] IPVS: ftp: loaded support on port[0] = 21
[   84.766108] IPVS: ftp: loaded support on port[0] = 21
[   84.771994] IPVS: ftp: loaded support on port[0] = 21
[   84.782821] IPVS: ftp: loaded support on port[0] = 21
[   84.782913] IPVS: ftp: loaded support on port[0] = 21
[   84.792065] IPVS: ftp: loaded support on port[0] = 21
[   84.796242] IPVS: ftp: loaded support on port[0] = 21
[   84.815385] IPVS: ftp: loaded support on port[0] = 21
[   85.398754] ip (4666) used greatest stack depth: 54424 bytes left
[   85.410708] ==================================================================
[   85.418107] BUG: KMSAN: uninit-value in __list_add_valid+0x1b8/0x450
[   85.424607] CPU: 1 PID: 4671 Comm: sh Not tainted 4.17.0+ #6
[   85.430379] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   85.439708] Call Trace:
[   85.442274]  dump_stack+0x185/0x1d0
[   85.445879]  kmsan_report+0x188/0x2a0
[   85.449658]  __msan_warning_32+0x70/0xc0
[   85.453699]  __list_add_valid+0x1b8/0x450
[   85.457827]  enqueue_task_fair+0xe12/0x4490
[   85.462128]  ? update_load_avg+0x2cc0/0x2cc0
[   85.466515]  wake_up_new_task+0xd34/0x1850
[   85.470735]  _do_fork+0x799/0xf60
[   85.474176]  __x64_sys_clone+0x15e/0x1b0
[   85.478213]  ? __ia32_sys_vfork+0x70/0x70
[   85.482336]  do_syscall_64+0x15b/0x230
[   85.486202]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   85.491378] RIP: 0033:0x7f06eee5af46
[   85.495065] RSP: 002b:00007ffe34b2ba10 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[   85.502749] RAX: ffffffffffffffda RBX: 00007ffe34b2ba10 RCX: 00007f06eee5af46
[   85.509995] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[   85.517253] RBP: 00007ffe34b2ba50 R08: 0000000000000000 R09: 0000000000000010
[   85.524510] R10: 00007f06ef3519d0 R11: 0000000000000246 R12: 0000000000000000
[   85.531755] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   85.539002] 
[   85.540604] Uninit was stored to memory at:
[   85.544905]  kmsan_internal_chain_origin+0x12b/0x210
[   85.549984]  __msan_chain_origin+0x69/0xc0
[   85.554206]  pick_next_task_fair+0x2474/0x2530
[   85.558763]  pick_next_task+0x1ba/0x420
[   85.562714]  __schedule+0x20f/0x770
[   85.566315]  do_task_dead+0xc8/0xf0
[   85.569918]  do_exit+0x347e/0x3930
[   85.573435]  do_group_exit+0x1a0/0x360
[   85.577302]  __do_sys_exit_group+0x21/0x30
[   85.581509]  __se_sys_exit_group+0x14/0x20
[   85.585721]  __x64_sys_exit_group+0x4c/0x50
[   85.590016]  do_syscall_64+0x15b/0x230
[   85.593879]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   85.599045] Local variable description: ----flags.i.i.i.i@_raw_spin_lock_irqsave
[   85.606550] Variable was created at:
[   85.610253]  _raw_spin_lock_irqsave+0x45/0xf0
[   85.614727]  do_task_dead+0x40/0xf0
[   85.618340] ==================================================================
[   85.625674] Disabling lock debugging due to kernel taint
[   85.631099] Kernel panic - not syncing: panic_on_warn set ...
[   85.631099] 
[   85.638451] CPU: 1 PID: 4671 Comm: sh Tainted: G    B             4.17.0+ #6
[   85.645611] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   85.654939] Call Trace:
[   85.657506]  dump_stack+0x185/0x1d0
[   85.661110]  panic+0x3d0/0x990
[   85.664285]  kmsan_report+0x29e/0x2a0
[   85.668061]  __msan_warning_32+0x70/0xc0
[   85.672102]  __list_add_valid+0x1b8/0x450
[   85.676228]  enqueue_task_fair+0xe12/0x4490
[   85.680529]  ? update_load_avg+0x2cc0/0x2cc0
[   85.684923]  wake_up_new_task+0xd34/0x1850
[   85.689145]  _do_fork+0x799/0xf60
[   85.692592]  __x64_sys_clone+0x15e/0x1b0
[   85.696633]  ? __ia32_sys_vfork+0x70/0x70
[   85.700757]  do_syscall_64+0x15b/0x230
[   85.704625]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   85.709792] RIP: 0033:0x7f06eee5af46
[   85.713491] RSP: 002b:00007ffe34b2ba10 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[   85.721174] RAX: ffffffffffffffda RBX: 00007ffe34b2ba10 RCX: 00007f06eee5af46
[   85.728424] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[   85.735672] RBP: 00007ffe34b2ba50 R08: 0000000000000000 R09: 0000000000000010
[   85.742921] R10: 00007f06ef3519d0 R11: 0000000000000246 R12: 0000000000000000
[   85.750179] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   86.899637] Shutting down cpus with NMI
[   86.915967] Dumping ftrace buffer:
[   86.919498]    (ftrace buffer empty)
[   86.923187] Kernel Offset: disabled
[   86.926795] Rebooting in 86400 seconds..