[Bug tapsets/11444] Check that no pt_regs*-processing functions are /* unprivileged */

[mjw at redhat dot com]

------- Additional Comments From mjw at redhat dot com  2010-06-14 09:34 -------
(In reply to comment #1)
> ucontext-unwind.stp:*: unsure, maybe should task_pt_regs() only; mjw?

That comes from the fact that most backtracing code was written before user
space support was added. All code handles both in-kernel and in-user backtraces,
up to the dwarf unwinder. We could push the kernel/user split down into the
tapset functions and only pass around a pt_regs struct that is tailored to
kernel/user if that is safer. What exactly is the problem with passing around
CONTEXT->regs?

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http://sourceware.org/bugzilla/show_bug.cgi?id=11444

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