On Tue, Mar 30, 2021 at 02:09:55PM -0500, madvenka@linux.microsoft.com wrote:
> From: "Madhavan T. Venkataraman" <madvenka@linux.microsoft.com>
> 
> When a kretprobe is active for a function, the function's return address
> in its stack frame is modified to point to the kretprobe trampoline. When
> the function returns, the frame is popped and control is transferred
> to the trampoline. The trampoline eventually returns to the original return
> address.

Reviewed-by: Mark Brown <broonie@kernel.org>