linux-kernel - Re: 2.6.22-rc2-mm1 NTFS & SLUB related fix

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Message-ID: <a8e1da0705242222n2414a66bo97d20c82c6a497e4@mail.gmail.com>
Date:	Fri, 25 May 2007 05:22:50 +0000
From:	"young dave" <hidave.darkstar@...il.com>
To:	"Christoph Lameter" <clameter@....com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.22-rc2-mm1 NTFS & SLUB related fix

Hi,

> Is this ntfs_init_locked_inode?

Yes, it is.

> >  Bytes b4 0xc2959e28:  00 00 00 00 00 00 00 00 5a 5a 5a 5a 5a 5a 5a
> >    Object 0xc2959e38:  24 00 51 00 00 00 6b a5
> >   Redzone 0xc2959e40:  00 00 cc cc
>
> First two bytes after the object overwritten. The allocation for this
> object should have been two bytes longer.
>
> > Last alloc: ntfs_init_locked_inode+0x9e/0x110 jiffies_ago=5140 cpu=0 pid=1604
>
> This is the function that allocated a too short object.
>

Only the last one byte of  the string  is zeroed, but It malloced 2
more byte appended the string because size of thentfschar type is 2
bytes , is this the reason? But why?

Regards
dave
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