> + } else {
> + /*
> + * The LBR logs any address in the IP, even if the IP just
> + * faulted. This means userspace can control the from address.
> + * Ensure we don't blindy read any address by validating it is
> + * a known text address.
> + */
> + if (kernel_text_address(from))
Sorry doing it this way is just incredible expensive and dumb.
After all the tool is called "perf" and not "non perf"
-Andi
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