Re: repeated failure to properly shutdown

[coypu%SDF.ORG@localhost]

On Fri, Jul 22, 2016 at 03:39:26PM +0700, Robert Elz wrote:
>     Date:        Thu, 21 Jul 2016 16:38:57 -0700
>     From:        bch <brad.harder%gmail.com@localhost>
>     Message-ID:  <CABfrOT9B1=0bxFDxfHCexw6YGXqybvyB0BqapKTb-G9jxZZcgA%mail.gmail.com@localhost>
> 
> 
>   | (gdb) print vp->v_mount->mnt_flag
>   | $4 = 4128
>   | (gdb)
> 
> 4128 is 0x1020 ... that is MNT_LOCAL (not surprising) | MNT_UNION (weird).
> 
> There were no union mounts in the fstab that you sent, is anything else
> making one?   Can you show the output from "mount" while the system is
> running (in as close to the state it would be just before a shutdown that
> crashes as you can make it).
> 
> (Even if gdb were printing mnt_flag in hex (unlikely) the 0x20 bit
> is set and that's MNT_UNION.)
> 
> kre

probably good to remember that it's also saying it's double freed.
is it garbage data because it was freed before?