[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   29.717327] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   31.611133] random: sshd: uninitialized urandom read (32 bytes read)
[   31.979728] random: sshd: uninitialized urandom read (32 bytes read)
[   33.126691] random: sshd: uninitialized urandom read (32 bytes read)
[   37.037443] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.2' (ECDSA) to the list of known hosts.
[   42.519715] random: sshd: uninitialized urandom read (32 bytes read)
2018/06/14 09:50:59 parsed 1 programs
[   43.420742] random: cc1: uninitialized urandom read (8 bytes read)
2018/06/14 09:51:00 executed programs: 0
[   44.318567] IPVS: ftp: loaded support on port[0] = 21
[   44.332235] IPVS: ftp: loaded support on port[0] = 21
[   44.337376] IPVS: ftp: loaded support on port[0] = 21
[   44.341730] IPVS: ftp: loaded support on port[0] = 21
[   44.355511] IPVS: ftp: loaded support on port[0] = 21
[   44.371542] IPVS: ftp: loaded support on port[0] = 21
[   44.375370] IPVS: ftp: loaded support on port[0] = 21
[   44.395952] IPVS: ftp: loaded support on port[0] = 21
[   45.079252] ip (4702) used greatest stack depth: 54424 bytes left
[   45.312137] ip (4747) used greatest stack depth: 54344 bytes left
[   45.384455] ip (4764) used greatest stack depth: 54056 bytes left
[   45.438944] ==================================================================
[   45.446331] BUG: KMSAN: uninit-value in __list_add_valid+0x1b8/0x450
[   45.452801] CPU: 0 PID: 4552 Comm: syz-executor0 Not tainted 4.17.0+ #6
[   45.459524] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.468852] Call Trace:
[   45.471415]  dump_stack+0x185/0x1d0
[   45.475017]  kmsan_report+0x188/0x2a0
[   45.478791]  __msan_warning_32+0x70/0xc0
[   45.482826]  __list_add_valid+0x1b8/0x450
[   45.486953]  enqueue_task_fair+0xe12/0x4490
[   45.491258]  ? update_load_avg+0x2cc0/0x2cc0
[   45.495645]  wake_up_new_task+0xd34/0x1850
[   45.499861]  _do_fork+0x799/0xf60
[   45.503292]  __x64_sys_clone+0x15e/0x1b0
[   45.507329]  ? __ia32_sys_vfork+0x70/0x70
[   45.511448]  do_syscall_64+0x15b/0x230
[   45.515309]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   45.520478] RIP: 0033:0x41f949
[   45.523640] RSP: 002b:0000000000a3fad0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[   45.531326] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000041f949
[   45.538571] RDX: 0000000000a3fadc RSI: 0000000000000000 RDI: 0000000000100011
[   45.545812] RBP: 0000000000a3fc80 R08: 0000000000a44a60 R09: 0000000000000015
[   45.553063] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000a3fe60
[   45.560308] R13: 0000000000a3fe28 R14: 0000000000000000 R15: 0000000000000000
[   45.567555] 
[   45.569165] Uninit was stored to memory at:
[   45.573465]  kmsan_internal_chain_origin+0x12b/0x210
[   45.578541]  __msan_chain_origin+0x69/0xc0
[   45.582751]  pick_next_task_fair+0x2474/0x2530
[   45.587304]  pick_next_task+0x1ba/0x420
[   45.591253]  __schedule+0x20f/0x770
[   45.594855]  do_task_dead+0xc8/0xf0
[   45.598454]  do_exit+0x347e/0x3930
[   45.601967]  do_group_exit+0x1a0/0x360
[   45.605827]  __do_sys_exit_group+0x21/0x30
[   45.610035]  __se_sys_exit_group+0x14/0x20
[   45.614247]  __x64_sys_exit_group+0x4c/0x50
[   45.618537]  do_syscall_64+0x15b/0x230
[   45.622401]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   45.627560] Local variable description: ----flags.i.i.i.i@_raw_spin_lock_irqsave
[   45.635065] Variable was created at:
[   45.638751]  _raw_spin_lock_irqsave+0x45/0xf0
[   45.643228]  do_task_dead+0x40/0xf0
[   45.646821] ==================================================================
[   45.654148] Disabling lock debugging due to kernel taint
[   45.659574] Kernel panic - not syncing: panic_on_warn set ...
[   45.659574] 
[   45.666911] CPU: 0 PID: 4552 Comm: syz-executor0 Tainted: G    B             4.17.0+ #6
[   45.675029] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.684353] Call Trace:
[   45.686913]  dump_stack+0x185/0x1d0
[   45.690514]  panic+0x3d0/0x990
[   45.693683]  kmsan_report+0x29e/0x2a0
[   45.697459]  __msan_warning_32+0x70/0xc0
[   45.701495]  __list_add_valid+0x1b8/0x450
[   45.705626]  enqueue_task_fair+0xe12/0x4490
[   45.709926]  ? update_load_avg+0x2cc0/0x2cc0
[   45.714307]  wake_up_new_task+0xd34/0x1850
[   45.718519]  _do_fork+0x799/0xf60
[   45.721949]  __x64_sys_clone+0x15e/0x1b0
[   45.725984]  ? __ia32_sys_vfork+0x70/0x70
[   45.730105]  do_syscall_64+0x15b/0x230
[   45.733966]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   45.739127] RIP: 0033:0x41f949
[   45.742301] RSP: 002b:0000000000a3fad0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[   45.749982] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000041f949
[   45.757226] RDX: 0000000000a3fadc RSI: 0000000000000000 RDI: 0000000000100011
[   45.764469] RBP: 0000000000a3fc80 R08: 0000000000a44a60 R09: 0000000000000015
[   45.771724] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000a3fe60
[   45.778969] R13: 0000000000a3fe28 R14: 0000000000000000 R15: 0000000000000000
[   46.976046] Shutting down cpus with NMI
[   46.992462] Dumping ftrace buffer:
[   46.995999]    (ftrace buffer empty)
[   46.999687] Kernel Offset: disabled
[   47.003295] Rebooting in 86400 seconds..