[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   29.274974] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   33.860356] random: sshd: uninitialized urandom read (32 bytes read)
[   34.147114] random: sshd: uninitialized urandom read (32 bytes read)
[   35.493759] random: sshd: uninitialized urandom read (32 bytes read)
[   42.095628] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.11' (ECDSA) to the list of known hosts.
[   47.661572] random: sshd: uninitialized urandom read (32 bytes read)
2018/06/17 05:27:00 parsed 1 programs
[   48.976078] random: cc1: uninitialized urandom read (8 bytes read)
2018/06/17 05:27:02 executed programs: 0
[   50.090127] IPVS: ftp: loaded support on port[0] = 21
[   50.104678] IPVS: ftp: loaded support on port[0] = 21
[   50.110057] IPVS: ftp: loaded support on port[0] = 21
[   50.114312] IPVS: ftp: loaded support on port[0] = 21
[   50.117066] IPVS: ftp: loaded support on port[0] = 21
[   50.128403] IPVS: ftp: loaded support on port[0] = 21
[   50.133734] IPVS: ftp: loaded support on port[0] = 21
[   50.147745] IPVS: ftp: loaded support on port[0] = 21
[   50.505021] ==================================================================
[   50.512421] BUG: KMSAN: uninit-value in __list_add_valid+0x1b8/0x450
[   50.518903] CPU: 1 PID: 4596 Comm: sh Not tainted 4.17.0+ #8
[   50.524677] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   50.534010] Call Trace:
[   50.536580]  dump_stack+0x185/0x1d0
[   50.540187]  kmsan_report+0x188/0x2a0
[   50.543969]  __msan_warning_32+0x70/0xc0
[   50.548010]  __list_add_valid+0x1b8/0x450
[   50.552155]  enqueue_task_fair+0xe12/0x4490
[   50.556474]  ? update_load_avg+0x2cc0/0x2cc0
[   50.560867]  wake_up_new_task+0xd34/0x1850
[   50.565099]  _do_fork+0x799/0xf60
[   50.568558]  __x64_sys_clone+0x15e/0x1b0
[   50.572607]  ? __ia32_sys_vfork+0x70/0x70
[   50.576746]  do_syscall_64+0x15b/0x230
[   50.580614]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   50.585793] RIP: 0033:0x7f6ead774f46
[   50.589494] RSP: 002b:00007ffe9c8968a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[   50.597184] RAX: ffffffffffffffda RBX: 00007ffe9c8968a0 RCX: 00007f6ead774f46
[   50.604451] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[   50.611727] RBP: 00007ffe9c8968e0 R08: 0000000000000000 R09: 0000000000000008
[   50.619003] R10: 00007f6eadc6b9d0 R11: 0000000000000246 R12: 0000000000000000
[   50.626280] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   50.633545] 
[   50.635161] Uninit was stored to memory at:
[   50.639474]  kmsan_internal_chain_origin+0x12b/0x210
[   50.644558]  __msan_chain_origin+0x69/0xc0
[   50.648774]  pick_next_task_fair+0x2474/0x2530
[   50.653337]  pick_next_task+0x1ba/0x420
[   50.657291]  __schedule+0x20f/0x770
[   50.660897]  do_task_dead+0xc8/0xf0
[   50.664512]  do_exit+0x347e/0x3930
[   50.668031]  do_group_exit+0x1a0/0x360
[   50.671897]  __do_sys_exit_group+0x21/0x30
[   50.676111]  __se_sys_exit_group+0x14/0x20
[   50.680339]  __x64_sys_exit_group+0x4c/0x50
[   50.684648]  do_syscall_64+0x15b/0x230
[   50.688517]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   50.693679] 
[   50.695293] Local variable description: ----tlb.i@ldt_arch_exit_mmap
[   50.701772] Variable was created at:
[   50.705490]  ldt_arch_exit_mmap+0x46/0x160
[   50.709729]  exit_mmap+0x410/0x980
[   50.713247] ==================================================================
[   50.720590] Disabling lock debugging due to kernel taint
[   50.726017] Kernel panic - not syncing: panic_on_warn set ...
[   50.726017] 
[   50.733376] CPU: 1 PID: 4596 Comm: sh Tainted: G    B             4.17.0+ #8
[   50.740542] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   50.749890] Call Trace:
[   50.752464]  dump_stack+0x185/0x1d0
[   50.756071]  panic+0x3d0/0x990
[   50.759249]  kmsan_report+0x29e/0x2a0
[   50.763028]  __msan_warning_32+0x70/0xc0
[   50.767086]  __list_add_valid+0x1b8/0x450
[   50.771228]  enqueue_task_fair+0xe12/0x4490
[   50.775541]  ? update_load_avg+0x2cc0/0x2cc0
[   50.779948]  wake_up_new_task+0xd34/0x1850
[   50.784170]  _do_fork+0x799/0xf60
[   50.787606]  __x64_sys_clone+0x15e/0x1b0
[   50.791648]  ? __ia32_sys_vfork+0x70/0x70
[   50.795778]  do_syscall_64+0x15b/0x230
[   50.799679]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   50.804852] RIP: 0033:0x7f6ead774f46
[   50.808543] RSP: 002b:00007ffe9c8968a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[   50.816237] RAX: ffffffffffffffda RBX: 00007ffe9c8968a0 RCX: 00007f6ead774f46
[   50.823509] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[   50.830797] RBP: 00007ffe9c8968e0 R08: 0000000000000000 R09: 0000000000000008
[   50.838052] R10: 00007f6eadc6b9d0 R11: 0000000000000246 R12: 0000000000000000
[   50.845301] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   51.999079] Shutting down cpus with NMI
[   52.015304] Dumping ftrace buffer:
[   52.018838]    (ftrace buffer empty)
[   52.022542] Kernel Offset: disabled
[   52.026156] Rebooting in 86400 seconds..