From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Fri, 15 Apr 2022 06:09:53 +0000 (-0400)
Subject: Fix: lttng: snapshot: add-output: leak of max size parameter
X-Git-Tag: v2.12.12~9
X-Git-Url: http://git.liburcu.org/?p=lttng-tools.git;a=commitdiff_plain;h=9b4b96c697028c9b7253de664f4f7a9b834a52ac

Fix: lttng: snapshot: add-output: leak of max size parameter

==1920281==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 6 byte(s) in 1 object(s) allocated from:
    #0 0x7fa95633add9 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:145
    #1 0x7fa955e90c09  (/usr/lib/libpopt.so.0+0x3c09)

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I87ce90a77d9624add0cab5d3090a7e83734da7f4
---

diff --git a/src/bin/lttng/commands/snapshot.c b/src/bin/lttng/commands/snapshot.c
index d35798310..8db8f558e 100644
--- a/src/bin/lttng/commands/snapshot.c
+++ b/src/bin/lttng/commands/snapshot.c
@@ -624,10 +624,14 @@ int cmd_snapshot(int argc, const char **argv)
 		case OPT_MAX_SIZE:
 		{
 			uint64_t val;
-			const char *opt = poptGetOptArg(pc);
-
-			if (utils_parse_size_suffix((char *) opt, &val) < 0) {
-				ERR("Unable to handle max-size value %s", opt);
+			char *max_size_arg = poptGetOptArg(pc);
+			const int parse_ret = utils_parse_size_suffix(
+					(char *) max_size_arg, &val);
+
+			free(max_size_arg);
+			if (parse_ret < 0) {
+				ERR("Unable to handle max-size value %s",
+						max_size_arg);
 				cmd_ret = CMD_ERROR;
 				goto end;
 			}