linux-kernel - Re: [PATCH] physmap: Fix leak of memory returned by parse_mtd

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Message-Id: <20081113.005534.56563769.anemo@mba.ocn.ne.jp>
Date:	Thu, 13 Nov 2008 00:55:34 +0900 (JST)
From:	Atsushi Nemoto <anemo@....ocn.ne.jp>
To:	linux-mtd@...ts.infradead.org
Cc:	dwmw2@...radead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] physmap: Fix leak of memory returned by
 parse_mtd_partitions

On Wed, 12 Nov 2008 23:57:33 +0900 (JST), Atsushi Nemoto <anemo@....ocn.ne.jp> wrote:
> The mtd partition parser returns an allocated pointer array of
> mtd_partition.  The caller must free it.  The array is used only for
> add_mtd_partitions(), so free it just after the call.
> 
> Signed-off-by: Atsushi Nemoto <anemo@....ocn.ne.jp>
> ---
>  drivers/mtd/maps/physmap.c |   17 ++++++++---------
>  1 files changed, 8 insertions(+), 9 deletions(-)

And many other callers of parse_mtd_partitions() also do not free the
returned memory.  With a quick look, 21 of 36 have same defect.

drivers/mtd/devices/m25p80.c
drivers/mtd/devices/mtd_dataflash.c
drivers/mtd/maps/bfin-async-flash.c
drivers/mtd/maps/edb7312.c
drivers/mtd/maps/impa7.c
drivers/mtd/maps/intel_vr_nor.c
drivers/mtd/maps/solutionengine.c
drivers/mtd/nand/atmel_nand.c
drivers/mtd/nand/cafe_nand.c
drivers/mtd/nand/cmx270_nand.c
drivers/mtd/nand/cs553x_nand.c
drivers/mtd/nand/edb7312.c
drivers/mtd/nand/fsl_elbc_nand.c
drivers/mtd/nand/fsl_upm.c
drivers/mtd/nand/mxc_nand.c
drivers/mtd/nand/orion_nand.c
drivers/mtd/nand/ppchameleonevb.c
drivers/mtd/nand/sharpsl.c
drivers/mtd/nand/tmio_nand.c
drivers/mtd/nand/ts7250.c
drivers/mtd/onenand/generic.c

Volunteers? ;)

---
Atsushi Nemoto
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