linux-kernel - Re: [PATCH 1/2] Staging: android: binder: Add some error checks

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Message-ID: <20120131185228.GA21481@kroah.com>
Date:	Tue, 31 Jan 2012 10:52:28 -0800
From:	Greg KH <greg@...ah.com>
To:	Dan Carpenter <dan.carpenter@...cle.com>,
	Arve Hjønnevåg <arve@...roid.com>
Cc:	devel@...verdev.osuosl.org,
	Christopher Lais <chris+android@...thought.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	linux-kernel@...r.kernel.org, Al Viro <viro@...IV.linux.org.uk>
Subject: Re: [PATCH 1/2] Staging: android: binder: Add some error checks

On Sat, Jan 21, 2012 at 11:22:08AM +0300, Dan Carpenter wrote:
> On Fri, Jan 20, 2012 at 07:56:20PM -0800, Arve Hjønnevåg wrote:
> > - Add a mutex to protect against two processes mmapping the
> >   same binder_proc.
> > - After locking mmap_sem, check that the vma we want to access
> >   (still) points to the same mm_struct.
> > - Use proc->tsk instead of current to get the files struct since
> >   this is where we get the rlimit from.
> 
> This doesn't seem related to the locking change at all.  Probably
> this patch should be split into three patches, one bugfix per
> patch, unless they are very closely related.

I agree.  Arve, is this all fixing one problem, or multiple ones?  If
multiple ones, we need this split up into multiple patches.

thanks,

greg k-h
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