linux-kernel - Re: [PATCH 2.6.19-rc4] usb auerswald possible memleak fix

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Message-Id: <200611072102.46447.wolfgang@iksw-muees.de>
Date:	Tue, 7 Nov 2006 21:02:46 +0100
From:	Wolfgang Mües <wolfgang@...w-muees.de>
To:	Mariusz Kozlowski <m.kozlowski@...land.pl>
Cc:	linux-kernel@...r.kernel.org, Greg KH <gregkh@...e.de>
Subject: Re: [PATCH 2.6.19-rc4] usb auerswald possible memleak fix

Mariusz,

On Tuesday 07 November 2006 00:31, Mariusz Kozlowski wrote:
> > 	There is possible memleak in auerbuf_setup(). Fix is to replace
> > kfree() with auerbuf_free(). An argument to usb_free_urb() does not
> > need a check as usb_free_urb() already does that. Not sure if I
> > should send this in two separate patches. The patch is against
> > 2.6.19-rc4 (not -mm).
>
> As I posted the bigger usb_free_urb() patch in another mail this one
> should do only one thing which is to fix possible memory leak in
> auerbuf_setup().
>
> Regards,
>
> 	Mariusz Kozlowski
>
> Signed-off-by: Mariusz Kozlowski <m.kozlowski@...land.pl>

Signed-off-by: Wolfgang Muees <wolfgang@...w-muees.de>

> diff -up linux-2.6.19-rc4-orig/drivers/usb/misc/auerswald.c
> linux-2.6.19-rc4/drivers/usb/misc/auerswald.c ---
> linux-2.6.19-rc4-orig/drivers/usb/misc/auerswald.c  2006-11-06
> 17:08:20.000000000 +0100 +++
> linux-2.6.19-rc4/drivers/usb/misc/auerswald.c     2006-11-07
> 00:26:25.000000000 +0100 @@ -780,7 +780,7 @@ static int auerbuf_setup
> (pauerbufctl_t
>
>  bl_fail:/* not enough memory. Free allocated elements */
>          dbg ("auerbuf_setup: no more memory");
> -       kfree(bep);
> +        auerbuf_free (bep);
>          auerbuf_free_buffers (bcp);
>          return -ENOMEM;
>  }

Many thanks for pointing this out.

regards
Wolfgang
-
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