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 '10.128.0.45' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   46.736191] ==================================================================
[   46.743579] BUG: KMSAN: uninit-value in __probe_kernel_read+0x224/0x280
[   46.750312] CPU: 0 PID: 4491 Comm: syz-executor546 Not tainted 4.16.0+ #87
[   46.757296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.766631] Call Trace:
[   46.769206]  dump_stack+0x185/0x1d0
[   46.772813]  ? __probe_kernel_read+0x224/0x280
[   46.777371]  kmsan_report+0x142/0x240
[   46.781150]  __msan_warning_32+0x6c/0xb0
[   46.785187]  __probe_kernel_read+0x224/0x280
[   46.789569]  ? kmsan_copy_to_user+0x141/0x160
[   46.794040]  ? kmsan_copy_to_user+0x141/0x160
[   46.798511]  is_valid_bugaddr+0xb6/0x1a0
[   46.802545]  ? report_bug+0x4b/0x880
[   46.806232]  ? kmsan_copy_to_user+0x141/0x160
[   46.810710]  report_bug+0x6f/0x880
[   46.814227]  ? __msan_poison_alloca+0x15c/0x1d0
[   46.818872]  ? do_invalid_op+0x46/0x50
[   46.822733]  ? kmsan_copy_to_user+0x141/0x160
[   46.827875]  ? do_error_trap+0xac/0x600
[   46.831831]  ? do_invalid_op+0x46/0x50
[   46.835693]  ? kmsan_copy_to_user+0x141/0x160
[   46.840162]  do_error_trap+0x1aa/0x600
[   46.844024]  ? __msan_metadata_ptr_for_load_8+0x10/0x20
[   46.849361]  ? kfree+0x736/0x29e0
[   46.852789]  ? _cond_resched+0x3c/0xd0
[   46.856658]  ? rcu_all_qs+0x32/0x1f0
[   46.860347]  ? _cond_resched+0x3c/0xd0
[   46.864211]  do_invalid_op+0x46/0x50
[   46.867899]  invalid_op+0x1b/0x40
[   46.871328] RIP: 0010:kmsan_copy_to_user+0x141/0x160
[   46.876401] RSP: 0018:ffff8801b7bafaa0 EFLAGS: 00010202
[   46.881738] RAX: ffff8801cedabb00 RBX: ffff8801b7bafb20 RCX: 0000000000000004
[   46.888986] RDX: 00007ffffffff000 RSI: ffff8801b7bafb20 RDI: ffffffffffffffff
[   46.896231] RBP: ffff8801b7bafae8 R08: 0000000000000000 R09: 000077ff80000000
[   46.903473] R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000004
[   46.910717] R13: ffffffffffffffff R14: 0000000000000000 R15: ffff8801cedac418
[   46.917981]  ucma_destroy_id+0x732/0x7c0
[   46.922019]  ucma_write+0x576/0x5e0
[   46.925621]  ? show_ibdev+0xf0/0xf0
[   46.929226]  __vfs_write+0x1a3/0x9f0
[   46.932918]  vfs_write+0x463/0x8d0
[   46.936437]  SYSC_write+0x172/0x360
[   46.940041]  SyS_write+0x55/0x80
[   46.943383]  do_syscall_64+0x309/0x430
[   46.947247]  ? SYSC_read+0x360/0x360
[   46.950939]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[   46.956102] RIP: 0033:0x4455b9
[   46.959276] RSP: 002b:00007f2ee691bda8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   46.966958] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 00000000004455b9
[   46.974208] RDX: 000000000000001c RSI: 0000000020000180 RDI: 0000000000000003
[   46.981458] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000
[   46.988703] R10: 0000000000000000 R11: 0000000000000246 R12: 006d635f616d6472
[   46.995955] R13: 2f646e6162696e69 R14: 666e692f7665642f R15: 0000000000000001
[   47.003202] 
[   47.004808] Local variable description: ----seq.i@path_openat
[   47.010660] Variable was created at:
[   47.014347]  path_openat+0xa4/0x6610
[   47.018034]  do_filp_open+0x261/0x640
[   47.021803] ==================================================================
[   47.029132] Disabling lock debugging due to kernel taint
[   47.034552] Kernel panic - not syncing: panic_on_warn set ...
[   47.034552] 
[   47.041890] CPU: 0 PID: 4491 Comm: syz-executor546 Tainted: G    B            4.16.0+ #87
[   47.050174] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.059499] Call Trace:
[   47.062063]  dump_stack+0x185/0x1d0
[   47.065675]  panic+0x39d/0x940
[   47.068855]  ? __probe_kernel_read+0x224/0x280
[   47.073416]  kmsan_report+0x238/0x240
[   47.077195]  __msan_warning_32+0x6c/0xb0
[   47.081231]  __probe_kernel_read+0x224/0x280
[   47.085615]  ? kmsan_copy_to_user+0x141/0x160
[   47.090085]  ? kmsan_copy_to_user+0x141/0x160
[   47.094563]  is_valid_bugaddr+0xb6/0x1a0
[   47.098598]  ? report_bug+0x4b/0x880
[   47.102294]  ? kmsan_copy_to_user+0x141/0x160
[   47.106765]  report_bug+0x6f/0x880
[   47.110281]  ? __msan_poison_alloca+0x15c/0x1d0
[   47.114925]  ? do_invalid_op+0x46/0x50
[   47.118786]  ? kmsan_copy_to_user+0x141/0x160
[   47.123259]  ? do_error_trap+0xac/0x600
[   47.127207]  ? do_invalid_op+0x46/0x50
[   47.131069]  ? kmsan_copy_to_user+0x141/0x160
[   47.135540]  do_error_trap+0x1aa/0x600
[   47.139402]  ? __msan_metadata_ptr_for_load_8+0x10/0x20
[   47.144742]  ? kfree+0x736/0x29e0
[   47.148170]  ? _cond_resched+0x3c/0xd0
[   47.152038]  ? rcu_all_qs+0x32/0x1f0
[   47.155727]  ? _cond_resched+0x3c/0xd0
[   47.159590]  do_invalid_op+0x46/0x50
[   47.163281]  invalid_op+0x1b/0x40
[   47.166711] RIP: 0010:kmsan_copy_to_user+0x141/0x160
[   47.171786] RSP: 0018:ffff8801b7bafaa0 EFLAGS: 00010202
[   47.177124] RAX: ffff8801cedabb00 RBX: ffff8801b7bafb20 RCX: 0000000000000004
[   47.184370] RDX: 00007ffffffff000 RSI: ffff8801b7bafb20 RDI: ffffffffffffffff
[   47.191613] RBP: ffff8801b7bafae8 R08: 0000000000000000 R09: 000077ff80000000
[   47.198856] R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000004
[   47.206104] R13: ffffffffffffffff R14: 0000000000000000 R15: ffff8801cedac418
[   47.213365]  ucma_destroy_id+0x732/0x7c0
[   47.217406]  ucma_write+0x576/0x5e0
[   47.221016]  ? show_ibdev+0xf0/0xf0
[   47.224626]  __vfs_write+0x1a3/0x9f0
[   47.228323]  vfs_write+0x463/0x8d0
[   47.231847]  SYSC_write+0x172/0x360
[   47.235453]  SyS_write+0x55/0x80
[   47.238795]  do_syscall_64+0x309/0x430
[   47.242656]  ? SYSC_read+0x360/0x360
[   47.246350]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[   47.251512] RIP: 0033:0x4455b9
[   47.254674] RSP: 002b:00007f2ee691bda8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   47.262365] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 00000000004455b9
[   47.269610] RDX: 000000000000001c RSI: 0000000020000180 RDI: 0000000000000003
[   47.276860] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000
[   47.284114] R10: 0000000000000000 R11: 0000000000000246 R12: 006d635f616d6472
[   47.291360] R13: 2f646e6162696e69 R14: 666e692f7665642f R15: 0000000000000001
[   47.299138] Dumping ftrace buffer:
[   47.302658]    (ftrace buffer empty)
[   47.306342] Kernel Offset: disabled
[   47.309943] Rebooting in 86400 seconds..