From nobody Mon Feb 9 17:56:23 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0E31C20C039 for ; Sun, 23 Mar 2025 12:29:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742732952; cv=none; b=WMJuqPVOLhwdHFG2fjC//3lx5XI/hDaPSj3vG1e1shV2Plp7C6HdVl6b9spPWZ7Id1KiVoINnJyqOkbpc3tCAxByEJ+bWUlN2IM/m1UjG7i/H71fIQdeusgRuEtw4qkp4BofHqluevemQynCgW90A7d5T6TtCF/pTH1FjRV7aVs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742732952; c=relaxed/simple; bh=kQE7lWjLc5+4FxD4hTC5SbZ6DD1VpQnZCqJXFz/ycLI=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=Zscv6N+nRk1LY8ehRuUwwHYECA4MQ/IAhqDxdYf/aNxzNNlDVI3a8Gi1osJTrAggsGZmFB43BVK9SQY5SyfSuEiwmpYX7AflAQD69CLD5iM5rdezKkoM3gA2u5bhSD+8B4Px61PJGcBHMdFCq5jn7sdTdxxcqkHumyc4nld4Z8U= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 80DCEC4CEF8; Sun, 23 Mar 2025 12:29:11 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.98) (envelope-from ) id 1twKSc-00000001yiC-3eEJ; Sun, 23 Mar 2025 08:29:50 -0400 Message-ID: <20250323122950.727283891@goodmis.org> User-Agent: quilt/0.68 Date: Sun, 23 Mar 2025 08:29:43 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Douglas Raillard Subject: [for-next][PATCH 10/10] tracing: Fix synth event printk format for str fields References: <20250323122933.407277911@goodmis.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Douglas Raillard The printk format for synth event uses "%.*s" to print string fields, but then only passes the pointer part as var arg. Add the missing precision var arg. Cc: Masami Hiramatsu Cc: Mathieu Desnoyers Link: https://lore.kernel.org/20250318180939.227696-1-douglas.raillard@arm.= com Signed-off-by: Douglas Raillard Signed-off-by: Steven Rostedt (Google) --- kernel/trace/trace_events_synth.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/trace/trace_events_synth.c b/kernel/trace/trace_events_= synth.c index 463b0073629a..d91205bc9f61 100644 --- a/kernel/trace/trace_events_synth.c +++ b/kernel/trace/trace_events_synth.c @@ -620,7 +620,8 @@ static int __set_synth_event_print_fmt(struct synth_eve= nt *event, if (event->fields[i]->is_string && event->fields[i]->is_dynamic) pos +=3D snprintf(buf + pos, LEN_OR_ZERO, - ", __get_str(%s)", event->fields[i]->name); + ", (int)__get_dynamic_array_len(%s), __get_str(%s)", + event->fields[i]->name, event->fields[i]->name); else if (event->fields[i]->is_stack) pos +=3D snprintf(buf + pos, LEN_OR_ZERO, ", __get_stacktrace(%s)", event->fields[i]->name); --=20 2.47.2