Re: [PATCH v3 22/22] x86/int3: Ensure that poke_int3_handler() is not sanitized

From: Peter Zijlstra
Date: Wed Feb 19 2020 - 11:52:01 EST

On Wed, Feb 19, 2020 at 05:30:25PM +0100, Peter Zijlstra wrote:
> > It's quite fragile. Tomorrow poke_int3_handler handler calls more of
> > fewer functions, and both ways it's not detected by anything.
> Yes; not having tools for this is pretty annoying. In 0/n I asked Dan if
> smatch could do at least the normal tracing stuff, the compiler
> instrumentation bits are going to be far more difficult because smatch
> doesn't work at that level :/
> (I actually have

... and I stopped typing ...

I think I mean to say something like: ... more changes to
poke_int3_handler() pending, but they're all quite simple).