linux-kernel - Re: [PATCH v2] mtd: spi-nor: fix a memory leak bug

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Message-ID: <806348cd-2b4e-7ec8-3c32-889904c37200@microchip.com>
Date:   Wed, 21 Aug 2019 08:23:09 +0000
From:   <Tudor.Ambarus@...rochip.com>
To:     <wenwen@...uga.edu>
CC:     <marek.vasut@...il.com>, <dwmw2@...radead.org>,
        <computersforpeace@...il.com>, <miquel.raynal@...tlin.com>,
        <richard@....at>, <vigneshr@...com>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] mtd: spi-nor: fix a memory leak bug



On 08/19/2019 08:16 PM, Wenwen Wang wrote:
> External E-Mail
> 
> 
> In spi_nor_parse_4bait(), 'dwords' is allocated through kmalloc(). However,
> it is not deallocated in the following execution if spi_nor_read_sfdp()
> fails, leading to a memory leak. To fix this issue, free 'dwords' before
> returning the error.
> 
> Fixes: 816873eaeec6 ("mtd: spi-nor: parse SFDP 4-byte Address Instruction
> Table")
> 
> Signed-off-by: Wenwen Wang <wenwen@...uga.edu>
> ---
>  drivers/mtd/spi-nor/spi-nor.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 


Since the bug was not introduced in the previous release and we are quite late
for mtd/fixes,

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git,
spi-nor/next branch.

Thanks,
ta