Re: [PATCH v2 6/9] kasan: improve slab object description

From: Alexander Potapenko
Date: Fri Mar 03 2017 - 11:48:28 EST


On Fri, Mar 3, 2017 at 2:31 PM, Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx> wrote:
> On 03/02/2017 04:48 PM, Andrey Konovalov wrote:
>> Changes slab object description from:
>>
>> Object at ffff880068388540, in cache kmalloc-128 size: 128
>>
>> to:
>>
>> The buggy address belongs to the object at ffff880068388540
>> which belongs to the cache kmalloc-128 of size 128
>> The buggy address is located 123 bytes inside of
>> 128-byte region [ffff880068388540, ffff8800683885c0)
>>
>> Makes it more explanatory and adds information about relative offset
>> of the accessed address to the start of the object.
>>
>
> I don't think that this is an improvement. You replaced one simple line with a huge
> and hard to parse text without giving any new/useful information.
> Except maybe offset, it useful sometimes, so wouldn't mind adding it to description.
Agreed.
How about:
===========
Access 123 bytes inside of 128-byte region [ffff880068388540, ffff8800683885c0)
Object at ffff880068388540 belongs to the cache kmalloc-128
===========
?

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Alexander Potapenko
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