Re: [PATCH] posix-timer: don't call idr_find() w/ negative ID

From: Tejun Heo
Date: Wed Feb 20 2013 - 17:12:42 EST

On Wed, Feb 20, 2013 at 2:10 PM, Sasha Levin <sasha.levin@xxxxxxxxxx> wrote:
> I do think that if you have to resort to using something like that there's
> something terribly wrong with the code somewhere else, and that other thing
> should be fixed first.
> Maybe digging into the timers code and seeing why this is needed there will
> prove me wrong...

The problem is that userland can feed us any timer_t which makes it
necessary to properly sanitize the value before using it.


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