Re: [PATCH] kprobes for 2.5.30

From: Linus Torvalds (
Date: Tue Aug 06 2002 - 11:35:17 EST

On Tue, 6 Aug 2002, Rusty Russell wrote:
> > You mean _exception_ handlers. It's definitely not unnecessary. Exceptions
> > can very much be preempted.
> The patch changes traps 1 and 3 (debug & int3) to interrupt gates
> though.

Yes, but then it enables interrupts at one point.

And I'm not saying that is wrong - I'm saying that the warning is really
because you didn't tell the kernel that it was _not_ wrong. The warning is
a "I got called with interrupts disabled, not nobody actually told me that
I shouldn't reschedule. I will refuse to reschedule (exactly because
interrupts weren't enabled), but I don't like the fact that somebody
apparently did things behind my back".

Think of the kernel as a grumpy girlfriend that you just stood up, and
bring flowers next time.


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