Re: [RFC PATCH v1 4/4] arm64: Mark stack trace as unreliable if kretprobed functions are present

From: Mark Brown
Date: Thu Apr 01 2021 - 14:01:07 EST


On Tue, Mar 30, 2021 at 02:09:55PM -0500, madvenka@xxxxxxxxxxxxxxxxxxx wrote:
> From: "Madhavan T. Venkataraman" <madvenka@xxxxxxxxxxxxxxxxxxx>
>
> 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@xxxxxxxxxx>

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