linux-kernel - Re: [PATCH] tracing: probes: Fix a possible race in trace_probe

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Message-ID: <20250512100313.4040c35b@gandalf.local.home>
Date: Mon, 12 May 2025 10:03:13 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
Cc: Paul Cacheux <paulcacheux@...il.com>, Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>, Namhyung Kim <namhyung@...nel.org>,
 linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org
Subject: Re: [PATCH] tracing: probes: Fix a possible race in trace_probe_log
 APIs

On Mon, 12 May 2025 09:24:42 +0900
Masami Hiramatsu (Google) <mhiramat@...nel.org> wrote:

> BTW, this fixes the problem introduced by commit ab105a4fb894
> ("tracing: Use tracing error_log with probe events"). However,
> this patch can be applied after commit d262271d0483 
> ("tracing/dynevent: Delegate parsing to create function").
> 
> Thus, before that commit, we may need another way to fix
> this issue. (e.g. introduce a different mutex.)
> Anyway, to record the correct fixes;

The method is if this depends on other commits, then those other commits
need to be backported too.

-- Steve


> 
> Fixes: ab105a4fb894 ("tracing: Use tracing error_log with probe events")