linux-kernel - [PATCH 5.15 552/667] tracing: Initialize integer variable to prevent garbage return value

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Message-Id: <20220607164951.256161571@linuxfoundation.org>
Date:   Tue,  7 Jun 2022 19:03:37 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        "Masami Hiramatsu (Google)" <mhiramat@...nel.org>,
        Gautam Menghani <gautammenghani201@...il.com>,
        "Steven Rostedt (Google)" <rostedt@...dmis.org>
Subject: [PATCH 5.15 552/667] tracing: Initialize integer variable to prevent garbage return value

From: Gautam Menghani <gautammenghani201@...il.com>

commit 154827f8e53d8c492b3fb0cb757fbcadb5d516b5 upstream.

Initialize the integer variable to 0 to fix the clang scan warning:
Undefined or garbage value returned to caller
[core.uninitialized.UndefReturn]
        return ret;

Link: https://lkml.kernel.org/r/20220522061826.1751-1-gautammenghani201@gmail.com

Cc: stable@...r.kernel.org
Fixes: 8993665abcce ("tracing/boot: Support multiple handlers for per-event histogram")
Acked-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
Signed-off-by: Gautam Menghani <gautammenghani201@...il.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 kernel/trace/trace_boot.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/trace/trace_boot.c
+++ b/kernel/trace/trace_boot.c
@@ -300,7 +300,7 @@ trace_boot_hist_add_handlers(struct xbc_
 {
 	struct xbc_node *node;
 	const char *p, *handler;
-	int ret;
+	int ret = 0;
 
 	handler = xbc_node_get_data(hnode);