[qemu-xen staging] fuzz: Fix leak when assembling datadir path string

[patchbot@xxxxxxx]

commit bcbad8b05c7f9072cadd3d3ebef2992196b73801
Author:     Alexander Bulekov <alxndr@xxxxxx>
AuthorDate: Fri Jul 17 12:35:23 2020 -0400
Commit:     Thomas Huth <thuth@xxxxxxxxxx>
CommitDate: Tue Jul 21 07:21:54 2020 +0200

    fuzz: Fix leak when assembling datadir path string
    
    We freed the string containing the final datadir path, but did not free
    the path to the executable's directory that we get from
    g_path_get_dirname(). Fix that.
    
    Reported-by: Thomas Huth <thuth@xxxxxxxxxx>
    Signed-off-by: Alexander Bulekov <alxndr@xxxxxx>
    Message-Id: <20200717163523.1591-1-alxndr@xxxxxx>
    Signed-off-by: Thomas Huth <thuth@xxxxxxxxxx>
---
 tests/qtest/fuzz/fuzz.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/tests/qtest/fuzz/fuzz.c b/tests/qtest/fuzz/fuzz.c
index 6bc17ef313..031594a686 100644
--- a/tests/qtest/fuzz/fuzz.c
+++ b/tests/qtest/fuzz/fuzz.c
@@ -143,7 +143,7 @@ int LLVMFuzzerInitialize(int *argc, char ***argv, char 
***envp)
 {
 
     char *target_name;
-    char *dir;
+    char *bindir, *datadir;
     bool serialize = false;
 
     /* Initialize qgraph and modules */
@@ -164,11 +164,13 @@ int LLVMFuzzerInitialize(int *argc, char ***argv, char 
***envp)
          * location of the executable. Using this we add exec_dir/pc-bios to
          * the datadirs.
          */
-        dir = g_build_filename(g_path_get_dirname(**argv), "pc-bios", NULL);
-        if (g_file_test(dir, G_FILE_TEST_IS_DIR)) {
-            qemu_add_data_dir(dir);
+        bindir = g_path_get_dirname(**argv);
+        datadir = g_build_filename(bindir, "pc-bios", NULL);
+        g_free(bindir);
+        if (g_file_test(datadir, G_FILE_TEST_IS_DIR)) {
+            qemu_add_data_dir(datadir);
         }
-        g_free(dir);
+        g_free(datadir);
     } else if (*argc > 1) {  /* The target is specified as an argument */
         target_name = (*argv)[1];
         if (!strstr(target_name, "--fuzz-target=")) {
--
generated by git-patchbot for /home/xen/git/qemu-xen.git#staging