INIT: Entering runlevel: 2

[info] Using makefile-style concurrent boot in runlevel 2.
[....] 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[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.0.21' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   33.355756] ==================================================================
[   33.363165] BUG: KMSAN: uninit-value in update_stack_state+0x673/0xa40
[   33.369817] CPU: 1 PID: 3575 Comm: syzkaller287285 Not tainted 4.16.0+ #82
[   33.376804] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.386131] Call Trace:
[   33.388699]  dump_stack+0x185/0x1d0
[   33.392308]  ? update_stack_state+0x673/0xa40
[   33.396780]  kmsan_report+0x142/0x240
[   33.400556]  __msan_warning_32+0x6c/0xb0
[   33.404593]  update_stack_state+0x673/0xa40
[   33.408899]  unwind_next_frame+0x618/0xe50
[   33.413113]  __unwind_start+0x508/0x630
[   33.417067]  __save_stack_trace+0x3e1/0xa80
[   33.421365]  ? __save_stack_trace+0x3e1/0xa80
[   33.425840]  ? __msan_poison_alloca+0x15c/0x1d0
[   33.430487]  ? save_stack_trace_tsk+0x58/0x2f0
[   33.435047]  save_stack_trace_tsk+0x258/0x2f0
[   33.439521]  proc_pid_stack+0x26a/0x470
[   33.443487]  proc_single_show+0x1af/0x300
[   33.447615]  ? proc_pid_wchan+0x250/0x250
[   33.451736]  ? proc_single_open+0x90/0x90
[   33.455863]  seq_read+0xc7d/0x2260
[   33.459390]  do_iter_read+0x880/0xd70
[   33.463169]  ? seq_open+0x360/0x360
[   33.466771]  do_readv+0x295/0x5f0
[   33.470205]  SYSC_readv+0x9b/0xb0
[   33.473635]  SyS_readv+0x56/0x80
[   33.476979]  do_syscall_64+0x309/0x430
[   33.480844]  ? vfs_readv+0x260/0x260
[   33.484534]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[   33.489699] RIP: 0033:0x4400a9
[   33.492864] RSP: 002b:00007fff9495d6a8 EFLAGS: 00000213 ORIG_RAX: 0000000000000013
[   33.500555] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400a9
[   33.507799] RDX: 0000000000000001 RSI: 000000002066dff0 RDI: 0000000000000003
[   33.515046] RBP: 00000000006ca018 R08: 0000000000000010 R09: 65732f636f72702f
[   33.522292] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401930
[   33.529537] R13: 00000000004019c0 R14: 0000000000000000 R15: 0000000000000000
[   33.536782] 
[   33.538382] Local variable description: ----key.i.i@from_kgid
[   33.544233] Variable was created at:
[   33.547925]  from_kgid+0x52/0x410
[   33.551353]  capable_wrt_inode_uidgid+0x25f/0x390
[   33.556176] ==================================================================
[   33.563622] Disabling lock debugging due to kernel taint
[   33.569060] Kernel panic - not syncing: panic_on_warn set ...
[   33.569060] 
[   33.576416] CPU: 1 PID: 3575 Comm: syzkaller287285 Tainted: G    B            4.16.0+ #82
[   33.584837] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.594170] Call Trace:
[   33.596738]  dump_stack+0x185/0x1d0
[   33.600345]  panic+0x39d/0x940
[   33.603521]  ? update_stack_state+0x673/0xa40
[   33.607990]  kmsan_report+0x238/0x240
[   33.611773]  __msan_warning_32+0x6c/0xb0
[   33.615814]  update_stack_state+0x673/0xa40
[   33.620134]  unwind_next_frame+0x618/0xe50
[   33.624359]  __unwind_start+0x508/0x630
[   33.628320]  __save_stack_trace+0x3e1/0xa80
[   33.632617]  ? __save_stack_trace+0x3e1/0xa80
[   33.637091]  ? __msan_poison_alloca+0x15c/0x1d0
[   33.641737]  ? save_stack_trace_tsk+0x58/0x2f0
[   33.646299]  save_stack_trace_tsk+0x258/0x2f0
[   33.650775]  proc_pid_stack+0x26a/0x470
[   33.654725]  proc_single_show+0x1af/0x300
[   33.658851]  ? proc_pid_wchan+0x250/0x250
[   33.662974]  ? proc_single_open+0x90/0x90
[   33.667097]  seq_read+0xc7d/0x2260
[   33.670622]  do_iter_read+0x880/0xd70
[   33.674402]  ? seq_open+0x360/0x360
[   33.678009]  do_readv+0x295/0x5f0
[   33.681448]  SYSC_readv+0x9b/0xb0
[   33.684883]  SyS_readv+0x56/0x80
[   33.688231]  do_syscall_64+0x309/0x430
[   33.692107]  ? vfs_readv+0x260/0x260
[   33.695814]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[   33.700988] RIP: 0033:0x4400a9
[   33.704152] RSP: 002b:00007fff9495d6a8 EFLAGS: 00000213 ORIG_RAX: 0000000000000013
[   33.711834] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400a9
[   33.719079] RDX: 0000000000000001 RSI: 000000002066dff0 RDI: 0000000000000003
[   33.726329] RBP: 00000000006ca018 R08: 0000000000000010 R09: 65732f636f72702f
[   33.733575] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401930
[   33.740822] R13: 00000000004019c0 R14: 0000000000000000 R15: 0000000000000000
[   33.748553] Dumping ftrace buffer:
[   33.752065]    (ftrace buffer empty)
[   33.755747] Kernel Offset: disabled
[   33.759347] Rebooting in 86400 seconds..