Re: [PATCH AUTOSEL 6.8 02/28] usb: storage: sddr55: fix sloppy typing in sddr55_{read|write}_data()

Sasha Levin
2024-04-08T02:11:29Z

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@omp.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@omp.ru>
>> Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
>> Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
>> Link: https://lore.kernel.org/r/4c9485f2-0bfc-591b-bfe7-2059289b554e@omp.ru
>> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>> Signed-off-by: Sasha Levin <sashal@kernel.org>
>
>[...]
>
> I doubt this is worth pulling into the stable kernels, it
>does not fix any serious issue...

Dropped, thanks!

--
Thanks,
Sasha