On 12/08, Masami Hiramatsu wrote: > > On Mon, 24 Nov 2025 19:12:42 +0100 > Oleg Nesterov <[email protected]> wrote: > > > On 11/17, Jiri Olsa wrote: > > > > > > There's an additional issue that single instruction replacement does > > > not have and it's the possibility of the user space code to jump in the > > > middle of those 5 bytes. I think it's unlikely to happen at the function > > > prologue, but uprobe could be placed anywhere. I'm not sure how to > > > mitigate this other than having some enable/disable switch or config > > > option, which is unfortunate. > > > > plus this breaks single-stepping... Although perhaps we don't really care. > > Yeah, and I think we can stop optimization if post_handler is set.
Hmm, why? This doesn't depend on whether ->ret_handler is set or not... Oleg.
