[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   28.354689] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   31.302670] random: sshd: uninitialized urandom read (32 bytes read)
[   31.662402] random: sshd: uninitialized urandom read (32 bytes read)
[   32.802360] random: sshd: uninitialized urandom read (32 bytes read)
[  172.679328] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.24' (ECDSA) to the list of known hosts.
[  178.260496] random: sshd: uninitialized urandom read (32 bytes read)
2018/06/26 13:58:20 parsed 1 programs
[  179.443115] random: cc1: uninitialized urandom read (8 bytes read)
2018/06/26 13:58:22 executed programs: 0
[  180.642587] IPVS: ftp: loaded support on port[0] = 21
[  180.649242] IPVS: ftp: loaded support on port[0] = 21
[  180.650926] IPVS: ftp: loaded support on port[0] = 21
[  180.661542] IPVS: ftp: loaded support on port[0] = 21
[  180.661734] IPVS: ftp: loaded support on port[0] = 21
[  180.671927] IPVS: ftp: loaded support on port[0] = 21
[  180.675766] IPVS: ftp: loaded support on port[0] = 21
[  180.683531] IPVS: ftp: loaded support on port[0] = 21
[  181.520719] ip (4697) used greatest stack depth: 54440 bytes left
[  181.535886] ==================================================================
[  181.543269] BUG: KMSAN: uninit-value in __list_add_valid+0x1b8/0x450
[  181.549757] CPU: 1 PID: 4708 Comm: sh Not tainted 4.17.0+ #9
[  181.555531] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  181.564861] Call Trace:
[  181.567430]  dump_stack+0x185/0x1d0
[  181.571035]  kmsan_report+0x188/0x2a0
[  181.574811]  __msan_warning_32+0x70/0xc0
[  181.578858]  __list_add_valid+0x1b8/0x450
[  181.582986]  enqueue_task_fair+0xe12/0x4490
[  181.587293]  ? update_load_avg+0x2cc0/0x2cc0
[  181.591684]  wake_up_new_task+0xd34/0x1850
[  181.595899]  _do_fork+0x799/0xf60
[  181.599333]  __x64_sys_clone+0x15e/0x1b0
[  181.603372]  ? __ia32_sys_vfork+0x70/0x70
[  181.607500]  do_syscall_64+0x15b/0x230
[  181.611368]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  181.616539] RIP: 0033:0x7f438348cf46
[  181.620225] RSP: 002b:00007ffdb5de9ff0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[  181.627916] RAX: ffffffffffffffda RBX: 00007ffdb5de9ff0 RCX: 00007f438348cf46
[  181.635176] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[  181.642423] RBP: 00007ffdb5dea030 R08: 0000000000000000 R09: 0000000000000018
[  181.649669] R10: 00007f43839839d0 R11: 0000000000000246 R12: 0000000000000000
[  181.657034] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[  181.664282] 
[  181.665882] Uninit was stored to memory at:
[  181.670187]  kmsan_internal_chain_origin+0x12b/0x210
[  181.675264]  __msan_chain_origin+0x69/0xc0
[  181.679475]  pick_next_task_fair+0x2474/0x2530
[  181.684032]  pick_next_task+0x1ba/0x420
[  181.687983]  __schedule+0x20f/0x770
[  181.691598]  do_task_dead+0xc8/0xf0
[  181.695212]  do_exit+0x347e/0x3930
[  181.698728]  do_group_exit+0x1a0/0x360
[  181.702599]  __do_sys_exit_group+0x21/0x30
[  181.706819]  __se_sys_exit_group+0x14/0x20
[  181.711030]  __x64_sys_exit_group+0x4c/0x50
[  181.715342]  do_syscall_64+0x15b/0x230
[  181.719206]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  181.724364] 
[  181.725968] Local variable description: ----tlb.i@ldt_arch_exit_mmap
[  181.732429] Variable was created at:
[  181.736120]  ldt_arch_exit_mmap+0x46/0x160
[  181.740329]  exit_mmap+0x410/0x980
[  181.743842] ==================================================================
[  181.751173] Disabling lock debugging due to kernel taint
[  181.756597] Kernel panic - not syncing: panic_on_warn set ...
[  181.756597] 
[  181.763943] CPU: 1 PID: 4708 Comm: sh Tainted: G    B             4.17.0+ #9
[  181.771100] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  181.780442] Call Trace:
[  181.783008]  dump_stack+0x185/0x1d0
[  181.786616]  panic+0x3d0/0x990
[  181.789789]  kmsan_report+0x29e/0x2a0
[  181.793566]  __msan_warning_32+0x70/0xc0
[  181.797607]  __list_add_valid+0x1b8/0x450
[  181.801732]  enqueue_task_fair+0xe12/0x4490
[  181.806037]  ? update_load_avg+0x2cc0/0x2cc0
[  181.810419]  wake_up_new_task+0xd34/0x1850
[  181.814645]  _do_fork+0x799/0xf60
[  181.818079]  __x64_sys_clone+0x15e/0x1b0
[  181.822115]  ? __ia32_sys_vfork+0x70/0x70
[  181.826239]  do_syscall_64+0x15b/0x230
[  181.830292]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  181.835459] RIP: 0033:0x7f438348cf46
[  181.839142] RSP: 002b:00007ffdb5de9ff0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[  181.846836] RAX: ffffffffffffffda RBX: 00007ffdb5de9ff0 RCX: 00007f438348cf46
[  181.854090] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[  181.861344] RBP: 00007ffdb5dea030 R08: 0000000000000000 R09: 0000000000000018
[  181.868590] R10: 00007f43839839d0 R11: 0000000000000246 R12: 0000000000000000
[  181.875834] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[  182.985082] Shutting down cpus with NMI
[  183.000361] Dumping ftrace buffer:
[  183.003887]    (ftrace buffer empty)
[  183.007585] Kernel Offset: disabled
[  183.011206] Rebooting in 86400 seconds..