linux-kernel - [PATCH 23/23 v3] tools lib traceevent: Handle possible strdup() error in tep_add_plugin

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Message-ID: <20200722011755.720803193@goodmis.org>
Date:   Tue, 21 Jul 2020 21:16:51 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     linux-kernel@...r.kernel.org, linux-trace-devel@...r.kernel.org
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Ingo Molnar <mingo@...nel.org>, Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@...il.com>
Subject: [PATCH 23/23 v3] tools lib traceevent: Handle possible strdup() error in
 tep_add_plugin_path() API

From: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@...il.com>

Free allocated resources and return -1 in case strdup() fails in
tep_add_plugin_path() API.

Link: https://lore.kernel.org/r/CAM9d7chfvJwodpVrHGc5E2J80peRojmYV_fD8x3cpn9HFRUw2g@mail.gmail.com
Link: https://lore.kernel.org/linux-trace-devel/20200714103027.2477584-9-tz.stoyanov@gmail.com
Link: https://lore.kernel.org/linux-trace-devel/20200716092014.2613403-9-tz.stoyanov@gmail.com

Suggested-by: Namhyung Kim <namhyung@...nel.org>
Acked-by: Namhyung Kim <namhyung@...nel.org>
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@...il.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
---
 tools/lib/traceevent/event-plugin.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/lib/traceevent/event-plugin.c b/tools/lib/traceevent/event-plugin.c
index f0877a7e3e8d..e7c2acb8680f 100644
--- a/tools/lib/traceevent/event-plugin.c
+++ b/tools/lib/traceevent/event-plugin.c
@@ -665,6 +665,10 @@ int tep_add_plugin_path(struct tep_handle *tep, char *path,
 		return -1;
 
 	dir->path = strdup(path);
+	if (!dir->path) {
+		free(dir);
+		return -1;
+	}
 	dir->prio = prio;
 	dir->next = tep->plugins_dir;
 	tep->plugins_dir = dir;
-- 
2.26.2