linux-kernel - Re: [PATCH] UWB: Return UWB_RSV_ALLOC_NOT_FOUND rather than crashing on NULL dereference if kzalloc fails

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Message-ID: <20101108164125.GC10892@kroah.com>
Date:	Mon, 8 Nov 2010 08:41:25 -0800
From:	Greg KH <greg@...ah.com>
To:	David Vrabel <david.vrabel@....com>
Cc:	Jesper Juhl <jj@...osbits.net>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] UWB: Return UWB_RSV_ALLOC_NOT_FOUND rather than
 crashing on NULL dereference if kzalloc fails

On Mon, Nov 08, 2010 at 12:43:02PM +0000, David Vrabel wrote:
> Jesper Juhl wrote:
> > Hi,
> > 
> > Crashing on a null pointer deref is never a nice thing to do. It seems to 
> > me that it's better to simply return UWB_RSV_ALLOC_NOT_FOUND if kzalloc() 
> > fails in uwb_rsv_find_best_allocation().
> 
> This is fine.
> 
> struct uwb_rsv_alloc_info is not that large (about 414 bytes I think) so
> it could possibly go on the stack and avoid the allocation.
> 
> Acked-by: David Vrabel <david.vrabel@....com>
> 
> Greg, seeing as I'm not maintaining the UWB subsystem any more do you
> want to pick this (and future) UWB patches?

Yes, I can do that, and will take this one.

thanks,

greg k-h
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