From 53fc25b7f557089aff101235152ae4bff15c428a Mon Sep 17 00:00:00 2001
From: Chenyuan Mi <cymi20@fudan.edu.cn>
Date: Wed, 14 Jun 2023 08:01:18 -0700
Subject: perf subcmd: Fix missing check for return value of malloc() in
add_cmdname()
The malloc() function may return NULL when it fails,
which may cause null pointer deference in add_cmdname(),
add Null check for return value of malloc().
Found by our static analysis tool.
Signed-off-by: Chenyuan Mi <cymi20@fudan.edu.cn>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: linux-kernel@vger.kernel.org
Link: https://lore.kernel.org/r/20230614150118.115208-1-cymi20@fudan.edu.cn
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/lib/subcmd/help.c | 2 ++
1 file changed, 2 insertions(+)
(limited to 'tools/lib/subcmd')
diff --git a/tools/lib/subcmd/help.c b/tools/lib/subcmd/help.c
index a66fb1a1a312..67a8d6b740ea 100644
--- a/tools/lib/subcmd/help.c
+++ b/tools/lib/subcmd/help.c
@@ -16,6 +16,8 @@
void add_cmdname(struct cmdnames *cmds, const char *name, size_t len)
{
struct cmdname *ent = malloc(sizeof(*ent) + len + 1);
+ if (!ent)
+ return;
ent->len = len;
memcpy(ent->name, name, len);
--
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