Re: use-after-free in __perf_install_in_context

[Alexei Starovoitov]

On Mon, Dec 07, 2015 at 05:09:21PM +0100, Dmitry Vyukov wrote:
> > So it would be _awesome_ if we could somehow extend this callchain to
> > include the site that calls call_rcu().
> 
> We have a patch for KASAN in works that adds so-called stack depot
> which allows to map a stack trace onto uint32 id. Then we can plumb

I was hacking something similar to categorize stack traces with u32 id.
How are you planning to limit the number of such stack traces ?
and what is the interface for user space to get stack trace from an id?

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