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Wed, 04 Jun 2025 09:22:45 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Wed, 4 Jun 2025 17:22:35 +0100 X-Gm-Features: AX0GCFvU4h87fFvNJU7c6qiHYVgyHIs1qS-HNQbOwXezPTVpgFYTQpUsuce3wWs Message-ID: Subject: Re: Function tracing not working To: Mathieu Desnoyers Cc: lttng-dev@lists.lttng.org Content-Type: text/plain; charset="UTF-8" X-BeenThere: lttng-dev@lists.lttng.org X-Mailman-Version: 2.1.39 Precedence: list List-Id: LTTng development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: David Aldrich via lttng-dev Reply-To: David Aldrich Errors-To: lttng-dev-bounces@lists.lttng.org Sender: "lttng-dev" Hi Mathieu > > Any idea what I am doing wrong please? > > AFAIK, the "LD_PRELOAD" environment variable is cleared by > sudo when running its child process for security purposes. Thanks for your answer, that does help. However, I have now adjusted the code so that sudo is not required, but when I import the trace the UST-CallStacks are still strikethrough. Any thoughts why this is happening? I don't see any runtime errors whether or not I specify the prefix: LD_PRELOAD=liblttng-ust-cyg-profile.so Is that expected? Best regards, David