linux-kernel - Re: [PATCH AUTOSEL 6.8 02/28] usb: storage: sddr55: fix sloppy typing in sddr55_{read|write}

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Message-ID: <ZhNSUbc8Nbv_G8Ri@sashalap>
Date: Sun, 7 Apr 2024 22:11:29 -0400
From: Sasha Levin <sashal@...nel.org>
To: Sergey Shtylyov <s.shtylyov@....ru>
Cc: linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	Karina Yankevich <k.yankevich@....ru>,
	Alan Stern <stern@...land.harvard.edu>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, usb-storage@...ts.one-eyed-alien.net
Subject: Re: [PATCH AUTOSEL 6.8 02/28] usb: storage: sddr55: fix sloppy
 typing in sddr55_{read|write}_data()

On Wed, Apr 03, 2024 at 09:10:10PM +0300, Sergey Shtylyov wrote:
>On 4/3/24 8:16 PM, Sasha Levin wrote:
>
>> From: Karina Yankevich <k.yankevich@....ru>
>>
>> [ Upstream commit d6429a3555fb29f380c5841a12f5ac3f7444af03 ]
>>
>> In sddr55_{read|write}_data(), the address variables are needlessly typed
>> as *unsigned long* -- which is 32-bit type on the 32-bit arches and 64-bit
>> type on the 64-bit arches; those variables' value should fit into just 3
>> command bytes and consists of 10-bit block # (or at least the max block #
>> seems to be 1023) and 4-/5-bit page # within a block, so 32-bit *unsigned*
>> *int* type should be more than enough...
>>
>> Found by Linux Verification Center (linuxtesting.org) with the Svace static
>> analysis tool.
>>
>> [Sergey: rewrote the patch subject/description]
>>
>> Signed-off-by: Karina Yankevich <k.yankevich@....ru>
>> Signed-off-by: Sergey Shtylyov <s.shtylyov@....ru>
>> Reviewed-by: Alan Stern <stern@...land.harvard.edu>
>> Link: https://lore.kernel.org/r/4c9485f2-0bfc-591b-bfe7-2059289b554e@omp.ru
>> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
>> Signed-off-by: Sasha Levin <sashal@...nel.org>
>
>[...]
>
>   I doubt this is worth pulling into the stable kernels, it
>does not fix any serious issue...

Dropped, thanks!

-- 
Thanks,
Sasha