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 '10.128.0.56' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   29.246567] ==================================================================
[   29.253964] BUG: KMSAN: uninit-value in vcs_read+0x18ba/0x1cc0
[   29.259952] CPU: 1 PID: 3501 Comm: syzkaller315412 Not tainted 4.16.0+ #82
[   29.266938] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   29.276269] Call Trace:
[   29.278844]  dump_stack+0x185/0x1d0
[   29.282453]  ? kmsan_internal_check_memory+0x106/0x1d0
[   29.287706]  kmsan_report+0x142/0x240
[   29.291490]  kmsan_internal_check_memory+0x125/0x1d0
[   29.296573]  kmsan_copy_to_user+0x69/0x160
[   29.300786]  vcs_read+0x18ba/0x1cc0
[   29.304415]  ? vcs_lseek+0x470/0x470
[   29.308112]  __vfs_read+0x19f/0x8e0
[   29.311722]  vfs_read+0x36c/0x6c0
[   29.315154]  SYSC_pread64+0x275/0x310
[   29.318960]  SyS_pread64+0x65/0x90
[   29.322487]  do_syscall_64+0x309/0x430
[   29.326352]  ? SYSC_write+0x360/0x360
[   29.330139]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[   29.335309] RIP: 0033:0x443d39
[   29.338474] RSP: 002b:00007ffcbd3c35f8 EFLAGS: 00000213 ORIG_RAX: 0000000000000011
[   29.346161] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443d39
[   29.353410] RDX: 0000000000000083 RSI: 0000000020000140 RDI: 0000000000000003
[   29.360656] RBP: 00000000006ce018 R08: 00000000004002e0 R09: 00000000004002e0
[   29.367904] R10: 0000000000000000 R11: 0000000000000213 R12: 00000000004019e0
[   29.375163] R13: 0000000000401a70 R14: 0000000000000000 R15: 0000000000000000
[   29.382417] 
[   29.384021] Uninit was stored to memory at:
[   29.388335]  kmsan_internal_chain_origin+0x12b/0x210
[   29.393422]  __msan_chain_origin+0x69/0xc0
[   29.397671]  vcs_read+0xd01/0x1cc0
[   29.401187]  __vfs_read+0x19f/0x8e0
[   29.404792]  vfs_read+0x36c/0x6c0
[   29.408224]  SYSC_pread64+0x275/0x310
[   29.411999]  SyS_pread64+0x65/0x90
[   29.415523]  do_syscall_64+0x309/0x430
[   29.419389]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[   29.424560] Uninit was created at:
[   29.428095]  kmsan_internal_poison_shadow+0xb8/0x1b0
[   29.433181]  kmsan_kmalloc+0x94/0x100
[   29.436959]  __kmalloc+0x23c/0x350
[   29.440475]  vc_allocate+0x438/0x800
[   29.444163]  con_install+0x8c/0x640
[   29.447771]  tty_init_dev+0x1b0/0x1020
[   29.451633]  tty_open+0x15e9/0x2ea0
[   29.455259]  chrdev_open+0xc20/0xd90
[   29.458947]  do_dentry_open+0xcc6/0x1430
[   29.462984]  vfs_open+0x1b7/0x2e0
[   29.466415]  path_openat+0x460a/0x6520
[   29.470280]  do_filp_open+0x261/0x640
[   29.474071]  do_sys_open+0x624/0x960
[   29.477783]  SYSC_open+0xab/0xc0
[   29.481144]  SyS_open+0x54/0x80
[   29.484426]  do_syscall_64+0x309/0x430
[   29.488317]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[   29.493488] 
[   29.495094] Bytes 0-79 of 131 are uninitialized
[   29.499731] ==================================================================
[   29.507068] Disabling lock debugging due to kernel taint
[   29.512501] Kernel panic - not syncing: panic_on_warn set ...
[   29.512501] 
[   29.519858] CPU: 1 PID: 3501 Comm: syzkaller315412 Tainted: G    B            4.16.0+ #82
[   29.528151] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   29.537487] Call Trace:
[   29.540064]  dump_stack+0x185/0x1d0
[   29.543672]  panic+0x39d/0x940
[   29.546858]  ? kmsan_internal_check_memory+0x106/0x1d0
[   29.552112]  kmsan_report+0x238/0x240
[   29.555892]  kmsan_internal_check_memory+0x125/0x1d0
[   29.560976]  kmsan_copy_to_user+0x69/0x160
[   29.565199]  vcs_read+0x18ba/0x1cc0
[   29.568809]  ? vcs_lseek+0x470/0x470
[   29.572503]  __vfs_read+0x19f/0x8e0
[   29.576114]  vfs_read+0x36c/0x6c0
[   29.579548]  SYSC_pread64+0x275/0x310
[   29.583328]  SyS_pread64+0x65/0x90
[   29.586847]  do_syscall_64+0x309/0x430
[   29.590716]  ? SYSC_write+0x360/0x360
[   29.594512]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[   29.599678] RIP: 0033:0x443d39
[   29.602844] RSP: 002b:00007ffcbd3c35f8 EFLAGS: 00000213 ORIG_RAX: 0000000000000011
[   29.610529] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443d39
[   29.617777] RDX: 0000000000000083 RSI: 0000000020000140 RDI: 0000000000000003
[   29.625033] RBP: 00000000006ce018 R08: 00000000004002e0 R09: 00000000004002e0
[   29.632292] R10: 0000000000000000 R11: 0000000000000213 R12: 00000000004019e0
[   29.639540] R13: 0000000000401a70 R14: 0000000000000000 R15: 0000000000000000
[   29.647284] Dumping ftrace buffer:
[   29.650815]    (ftrace buffer empty)
[   29.654512] Kernel Offset: disabled
[   29.658118] Rebooting in 86400 seconds..