Re: Merging ptrace branch into mainline

From: Oleg Nesterov
Date: Fri Jul 22 2011 - 11:02:10 EST

On 07/22, Tejun Heo wrote:
> Single step and breakpoints use SIGTRAP and there are some variances
> on the information being reported depending on archs and IIRC it isn't
> always possible to discern those debug traps from kill(SIGTRAP)'s from
> userland.

Yes, we should audit the arch/ code.

On x86 the tracer can discern step/breakpoints traps afaics, still probably
it makes sense to change do_int3() to use fill_sigtrap_info(). Currently we
report si_code = SI_KERNEL.


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