diff mbox series

[19/23,v3] tools lib traceevent: Improve error handling of tep_plugin_add_option() API

Message ID 20200722011755.158091410@goodmis.org (mailing list archive)
State Accepted
Commit b796162bc4ee49d94b2cc59f98f6d32b5b517141
Headers show
Series tools lib traceevent: Synchronizing trace-cmd with tools | expand

Commit Message

Steven Rostedt July 22, 2020, 1:16 a.m. UTC 
From: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>

In case of memory error, ensure all allocated resources are freed.
Do not append broken option in trace_plugin_options list.

Link: https://lore.kernel.org/r/CAM9d7cizjF+fbK7YzmsBDgrx__4YAOsmEq67D3sWET8FF+YdFA@mail.gmail.com
Link: https://lore.kernel.org/linux-trace-devel/20200714103027.2477584-5-tz.stoyanov@gmail.com
Link: https://lore.kernel.org/linux-trace-devel/20200716092014.2613403-5-tz.stoyanov@gmail.com

Suggested-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
 tools/lib/traceevent/event-plugin.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/tools/lib/traceevent/event-plugin.c b/tools/lib/traceevent/event-plugin.c
index f8d253a61970..6b84b9c4e6ba 100644
--- a/tools/lib/traceevent/event-plugin.c
+++ b/tools/lib/traceevent/event-plugin.c
@@ -361,23 +361,25 @@  int tep_plugin_add_option(const char *name, const char *val)
 	if (!op) {
 		op = malloc(sizeof(*op));
 		if (!op)
-			return -ENOMEM;
+			goto out_free;
 		memset(op, 0, sizeof(*op));
-		op->next = trace_plugin_options;
-		trace_plugin_options = op;
-
 		op->plugin = plugin;
 		op->option = option_str;
-
 		if (val) {
 			op->value = strdup(val);
-			if (!op->value)
+			if (!op->value) {
+				free(op);
 				goto out_free;
+			}
 		}
+		op->next = trace_plugin_options;
+		trace_plugin_options = op;
 	}
 
 	return process_option(plugin, option_str, val);
- out_free:
+
+out_free:
+	free(plugin);
 	free(option_str);
 	return -ENOMEM;
 }