From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Fri, 15 Apr 2022 00:22:03 +0000 (-0400)
Subject: Fix: lttng: enable-channel: leak of popt arguments
X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=aafac6e102f9a2a44318743e521a3270a580051d

Fix: lttng: enable-channel: leak of popt arguments

==1245463==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 5 byte(s) in 1 object(s) allocated from:
    #0 0x7fe7c494fdd9 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:145
    #1 0x7fe7c44a5c09  (/usr/lib/libpopt.so.0+0x3c09)

Arguments obtained with poptGetOptArg() must be free'd.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I5a65ca6fbaa18f7717ea918a5bc7f42daeb1009a
---

diff --git a/src/bin/lttng/commands/enable_channels.cpp b/src/bin/lttng/commands/enable_channels.cpp
index 25327473f..a7fffbff1 100644
--- a/src/bin/lttng/commands/enable_channels.cpp
+++ b/src/bin/lttng/commands/enable_channels.cpp
@@ -644,6 +644,11 @@ int cmd_enable_channels(int argc, const char **argv)
 			ret = CMD_UNDEFINED;
 			goto end;
 		}
+
+		if (opt_arg) {
+			free(opt_arg);
+			opt_arg = nullptr;
+		}
 	}
 
 	ret = print_missing_or_multiple_domains(
@@ -755,5 +760,6 @@ end:
 	/* Overwrite ret if an error occurred when enable_channel */
 	ret = command_ret ? command_ret : ret;
 	poptFreeContext(pc);
+	free(opt_arg);
 	return ret;
 }