linux-kernel - Re: [PATCH] arm64: Mark start_backtrace() notrace and NOKPROBE

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Message-ID: <Ye6kNwFisZw2MwV1@sirena.org.uk>
Date:   Mon, 24 Jan 2022 13:05:59 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>, stable@...r.kernel.org
Subject: Re: [PATCH] arm64: Mark start_backtrace() notrace and NOKPROBE_SYMBOL

On Mon, Jan 24, 2022 at 05:17:54PM +0900, Masami Hiramatsu wrote:
> Mark the start_backtrace() as notrace and NOKPROBE_SYMBOL
> because this function is called from ftrace and lockdep to
> get the caller address via return_address(). The lockdep
> is used in kprobes, it should also be NOKPROBE_SYMBOL.

Reviwed-by: Mark Brown <broonie@...nel.org>

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