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From: David Aldrich via lttng-dev <lttng-dev@lists.lttng.org>
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: lttng-dev@lists.lttng.org
Subject: Re: Function tracing not working
Date: Wed, 4 Jun 2025 17:22:35 +0100	[thread overview]
Message-ID: <CAJK_ieiG5yDoyg8TetipUJZNMhrpteZuY5CBv5eeUNE18AJq9Q@mail.gmail.com> (raw)
In-Reply-To: <cc6438cc-1836-4983-8f09-c569ee2cf11d@efficios.com>

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

  reply	other threads:[~2025-06-04 16:22 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-02 14:37 David Aldrich via lttng-dev
2025-06-02 17:22 ` Mathieu Desnoyers via lttng-dev
2025-06-04 16:22   ` David Aldrich via lttng-dev [this message]
2025-06-05 10:49     ` David Aldrich via lttng-dev
2025-06-05 18:49       ` Mathieu Desnoyers via lttng-dev
2025-06-06 14:37         ` David Aldrich via lttng-dev
2025-06-06 18:14           ` Mathieu Desnoyers via lttng-dev

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