linux-kernel - [PATCH] tracing: Fix NULL vs IS_ERR() check in enable

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Date: Thu, 20 Jun 2024 11:49:57 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH] tracing: Fix NULL vs IS_ERR() check in enable_instances()

The trace_array_create_systems() function returns error pointers, not
NULL.  Fix the check to match.

Fixes: e645535a954a ("tracing: Add option to use memmapped memory for trace boot instance")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 kernel/trace/trace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 71cca10581d6..5462fb10ff64 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -10507,7 +10507,7 @@ __init static void enable_instances(void)
 		}
 
 		tr = trace_array_create_systems(name, NULL, addr, size);
-		if (!tr) {
+		if (IS_ERR(tr)) {
 			pr_warn("Tracing: Failed to create instance buffer %s\n", curr_str);
 			continue;
 		}
-- 
2.43.0