fuzz-systemctl-parse-argv: avoid "leak" of bus object

Memory sanitizer would report leaked memory from --boot-load-entry=help.

Maybe we should disable all bus connections from the fuzzer? It seems not
appropriate to communicate with logind. OTOH, in a real fuzzing environment
this call should just fail, so maybe that's OK.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/systemctl/fuzz-systemctl-parse-argv.c b/src/systemctl/fuzz-systemctl-parse-argv.c
index f884917e17..cf66fa4bb7 100644
--- a/src/systemctl/fuzz-systemctl-parse-argv.c
+++ b/src/systemctl/fuzz-systemctl-parse-argv.c
@@ -9,6 +9,7 @@
 #include "stdio-util.h"
 #include "strv.h"
 #include "systemctl.h"
+#include "systemctl-util.h"
 
 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
         _cleanup_strv_free_ char **argv = NULL;
@@ -54,5 +55,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
                 assert_se(freopen(path, "w", stdout));
         }
 
+        release_busses(); /* We open the bus for communication with logind.
+                           * It needs to be closed to avoid apparent leaks. */
         return 0;
 }