Re: [PATCH 08/12] add trace events for each syscall entry/exit

From: Mathieu Desnoyers
Date: Wed Aug 26 2009 - 13:10:41 EST

* Peter Zijlstra (peterz@xxxxxxxxxxxxx) wrote:
> On Tue, 2009-08-25 at 14:31 -0400, Mathieu Desnoyers wrote:
> > For instance, some
> > proprietary Linux driver does very odd things with system calls within
> > kernel threads, like invoking them with int 0x80.
> So who is going to send the x86 patch to make int 0x80 from kernel space
> panic the machine? :-)

I'm pretty sure ATI or Nvidia already cooked something like this in the
past. Let's not bother too much with the proprietary aspect. Tracing
internal kernel invocations of sys_*() is actually the main point I was
trying to come to.


Mathieu Desnoyers
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