On 09/15/14 08:28, Andrey Ryabinin wrote:
> On 09/14/2014 05:35 AM, Randy Dunlap wrote:
>> Following sentence is confusing. I'm not sure how to fix it.
>>
>
>
> Perhaps rephrase is like this:
>
> Do not use slub poisoning with KASan if user tracking enabled (iow
> slub_debug=PU).
if user tracking is enabled
> User tracking info (allocation/free stacktraces) are stored inside slub
> object's metadata.
> Slub poisoning overwrites slub object and it's metadata with poison value on
> freeing.
its
> So if KASan will detect use after free, allocation/free stacktraces will be
> overwritten
So if KASan detects a use after free, allocation/free stacktraces are
overwritten
> and KASan won't be able to print them.
Thanks.
--
~Randy
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