lkml.org 
[lkml]   [2020]   [Apr]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] mm/vmalloc: Sanitize __get_vm_area() arguments
From
Date


> On Apr 4, 2020, at 12:52 PM, Uladzislau Rezki <urezki@gmail.com> wrote:
>
>>
>> Is there any need to similarly sanitize “size” to assure start + size doesn’t go past “end?”
>>
> Why is that double check needed if all such tests are done deeper on stack?

If such tests ARE performed, then it doesn't matter to me whether it is checked before or after,
it just seems that nothing checks whether start + size makes some sort of sense with respect
to end.

I admit I didn't walk through all the routines to see if such a check would be superfluous.

\
 
 \ /
  Last update: 2020-04-05 07:27    [W:0.055 / U:10.316 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site