linux-kernel - Re: [PATCH] rsi: Fix failure to load firmware after memory leak fix and fix the leak

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Message-ID: <87wpxlao8l.fsf@kamboji.qca.qualcomm.com>
Date:	Mon, 27 Jul 2015 13:28:26 +0300
From:	Kalle Valo <kvalo@...eaurora.org>
To:	Mike Looijmans <mike.looijmans@...ic.nl>
Cc:	linux-wireless@...r.kernel.org, khoroshilov@...ras.ru,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH] rsi: Fix failure to load firmware after memory leak fix and fix the leak

Mike Looijmans <mike.looijmans@...ic.nl> writes:

> Fixes commit eae79b4f3e82ca63a53478a161b190a0d38fe526 ("rsi: fix memory leak
> in rsi_load_ta_instructions()") which stopped the driver from functioning.

You can abbreviate the commit id:

Fixes commit eae79b4f3e82 ("rsi: fix memory leak in
rsi_load_ta_instructions()") which stopped the driver from functioning.

> Firmware data has been allocated using vmalloc(), resulting in memory
> that cannot be used for DMA. Hence the firmware was first copied to a
> buffer allocated with kmalloc() in the original code. This patch reverts
> the commit and only calls "kfree()" to release the buffer after sending
> the data. This fixes the memory leak without breaking the driver.
>
> Add a comment to the kmemdup() calls to explain why this is done.
>
> Tested on a Topic Miami-Florida board which contains the rsi SDIO chip.
>
> Also added the same kfree() call to the USB glue driver. This was not
> tested on actual hardware though, as I only have the SDIO version.
>
> Signed-off-by: Mike Looijmans <mike.looijmans@...ic.nl>

Add this before Signed-off-by line:

Fixes: eae79b4f3e82 ("rsi: fix memory leak in rsi_load_ta_instructions()")

> Cc: stable@...r.kernel.org

Also no need to send email to stable@...r.kernel.org list, this line is
enough and the stable team will pick the commit automatically.

-- 
Kalle Valo
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