RE: [PATCH v5 00/21] kprobes: Unify kretprobe trampoline handlers and make kretprobe lockless

From: Eddy_Wu@xxxxxxxxxxxxxx
Date: Tue Sep 08 2020 - 07:24:07 EST

> From: peterz@xxxxxxxxxxxxx <peterz@xxxxxxxxxxxxx>
> I'm now trying and failing to reproduce.... I can't seem to make it use
> int3 today. It seems to want to use ftrace or refuses everything. I'm
> probably doing it wrong.

You can turn off CONFIG_KPROBES_ON_FTRACE (and also sysctl debug.kprobes-optimization) to make it use int3 handler


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