Re: [RFC PATCH v5 2/2] arm64: Create a list of SYM_CODE functions, check return PC against list

Madhavan T. Venkataraman
2021-06-04T20:40:49Z

On 6/4/21 11:59 AM, Mark Brown wrote:
> On Wed, May 26, 2021 at 04:49:17PM -0500, madvenka@linux.microsoft.com wrote:
>
>> + * - return_to_handler() is handled by the unwinder by attempting to
>> + * retrieve the original return address from the per-task return
>> + * address stack.
>> + *
>> + * - kretprobe_trampoline() can be handled in a similar fashion by
>> + * attempting to retrieve the original return address from the per-task
>> + * kretprobe instance list.
>> + *
>> + * - I reckon optprobes can be handled in a similar fashion in the future?
>
> Note that there's a patch for optprobes on the list now:
>
> https://lore.kernel.org/r/1622803839-27354-1-git-send-email-liuqi115@huawei.com

Yes. I saw that.

Madhavan