On Wed, Jan 10, 2018 at 12:33 PM, Peter Zijlstra <[email protected]> wrote:
>
> Use gdb on /proc/kcore and disassemble self to see the _real_ code.
Yes, because that works so well when you get these random reports of
crazy behavior that simply doesn't ever trigger on any machine you
have.
> But yes, tricky stuff. Not arguing we need relocations in alternatives,
> just saying debugging them (and static keys and others) is great fun.
Yes. It's definitely a good challenge, and can be _very_ satisfying
when you then finally figure it out.
I'm not sure it's worth the pain before that point, though.
So I think we should strive to make our alternatives code just catch
some of the more subtle errors early instead.
Linus
