From: Yu Peng <pengyu@kylinos.cn>
Date: Tue, 19 May 2026 08:34:09 +0000 (+0800)
Subject: tracing: Use krealloc_array() for trace option array growth
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=153498f200d295f3efa6bd37fc6e7ff105ab344f;p=thirdparty%2Fkernel%2Flinux.git

tracing: Use krealloc_array() for trace option array growth

Use krealloc_array() when growing tr->topts instead of open-coding the
size calculation in krealloc().

This makes the resize path use the helper intended for array allocations
and avoids manual multiplication of the element count and element size.

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://patch.msgid.link/20260519083409.3885032-1-pengyu@kylinos.cn
Signed-off-by: Yu Peng <pengyu@kylinos.cn>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 6eb4d3097a4d..aec3f31ed027 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -7928,8 +7928,8 @@ create_trace_option_files(struct trace_array *tr, struct tracer *tracer,
 	if (!topts)
 		return 0;
 
-	tr_topts = krealloc(tr->topts, sizeof(*tr->topts) * (tr->nr_topts + 1),
-			    GFP_KERNEL);
+	tr_topts = krealloc_array(tr->topts, tr->nr_topts + 1, sizeof(*tr->topts),
+				  GFP_KERNEL);
 	if (!tr_topts) {
 		kfree(topts);
 		return -ENOMEM;