Re: [PATCHv6 perf/core 08/22] uprobes/x86: Add mapping for optimized uprobe trampolines

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On Sun, Jul 20, 2025 at 01:21:18PM +0200, Jiri Olsa wrote:
> +static void destroy_uprobe_trampoline(struct uprobe_trampoline *tramp)
> +{
> +	/*
> +	 * We do not unmap and release uprobe trampoline page itself,
> +	 * because there's no easy way to make sure none of the threads
> +	 * is still inside the trampoline.
> +	 */
> +	hlist_del(&tramp->node);
> +	kfree(tramp);
> +}

I am somewhat confused; isn't this called from
__mmput()->uprobe_clear_state()->arch_uprobe_clear_state ?

At that time we don't have threads anymore and mm is about to be
destroyed anyway.




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