diff --git a/samples/sample_x86.c b/samples/sample_x86.c
index 84928911..99d63b02 100644
--- a/samples/sample_x86.c
+++ b/samples/sample_x86.c
@@ -301,6 +301,7 @@ static void test_i386_map_ptr(void)
         printf(">>> Failed to read 4 bytes from [0x%x]\n", ADDRESS);
 
     uc_close(uc);
+    free(mem);
 }
 
 static void test_i386_jump(void)
diff --git a/samples/sample_x86_32_gdt_and_seg_regs.c b/samples/sample_x86_32_gdt_and_seg_regs.c
index 6bfb45b8..e6023f8e 100644
--- a/samples/sample_x86_32_gdt_and_seg_regs.c
+++ b/samples/sample_x86_32_gdt_and_seg_regs.c
@@ -280,6 +280,7 @@ static void gdt_demo()
     assert(memcmp(buf, "\x67\x45\x23\x01\xef\xcd\xab\x89", 8) == 0);
 
     uc_close(uc);
+    free(gdt);
 }
 
 /******************************************************************************/
diff --git a/tests/regress/map_crash.c b/tests/regress/map_crash.c
index f794b4d7..1d89d8dd 100644
--- a/tests/regress/map_crash.c
+++ b/tests/regress/map_crash.c
@@ -27,5 +27,6 @@ int main()
         uc_mem_write (uc, UC_BUG_WRITE_ADDR, buf, size);
     }
     uc_close(uc);
+    free(buf);
     return 0;
 }
diff --git a/tests/regress/sigill.c b/tests/regress/sigill.c
index ea8f987f..9e5061d3 100644
--- a/tests/regress/sigill.c
+++ b/tests/regress/sigill.c
@@ -41,6 +41,7 @@ int main()
     uc_hook_add(uc, &uh_trap, UC_HOOK_INTR, _interrupt, NULL, 1, 0);
     uc_emu_start(uc, UC_BUG_WRITE_ADDR, UC_BUG_WRITE_ADDR+8, 0, 1);
     uc_close(uc);
+    free(buf);
     printf ("Correct: %s\n", got_sigill? "YES": "NO");
     return got_sigill? 0: 1;
 }
diff --git a/tests/regress/x86_vex b/tests/regress/x86_vex
new file mode 100755
index 00000000..348db7fc
Binary files /dev/null and b/tests/regress/x86_vex differ
diff --git a/tests/unit/test_mem_map_ptr.c b/tests/unit/test_mem_map_ptr.c
index fff4e6c7..aedeb115 100644
--- a/tests/unit/test_mem_map_ptr.c
+++ b/tests/unit/test_mem_map_ptr.c
@@ -63,6 +63,8 @@ static void test_basic(void **state)
     uc_assert_success(uc_mem_unmap(uc, mem_start, mem_len));
 
     assert_memory_equal(buf, host_mem, 4);
+
+    free(host_mem);
 }
 
 int main(void) {