[PATCH] tools: selftests: Add missing munmap() in check_error_paths()

[Youling Tang]

Add the missing munmap(addr_ro, PAGE_SIZE) before return.

Signed-off-by: Youling Tang <tangyoul...@loongson.cn>
---
 tools/testing/selftests/ptrace/peeksiginfo.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/ptrace/peeksiginfo.c 
b/tools/testing/selftests/ptrace/peeksiginfo.c
index 5490065..3d64be4 100644
--- a/tools/testing/selftests/ptrace/peeksiginfo.c
+++ b/tools/testing/selftests/ptrace/peeksiginfo.c
@@ -62,7 +62,7 @@ static int check_error_paths(pid_t child)
                        MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
        if (addr_ro == MAP_FAILED) {
                err("mmap() failed: %m\n");
-               goto out;
+               goto out_rw;
        }
 
        arg.nr = SIGNR;
@@ -75,7 +75,7 @@ static int check_error_paths(pid_t child)
                err("sys_ptrace() returns %d (expected -1),"
                                " errno %d (expected %d): %m\n",
                                ret, errno, EINVAL);
-               goto out;
+               goto out_ro;
        }
        arg.flags = 0;
 
@@ -84,7 +84,7 @@ static int check_error_paths(pid_t child)
                                        addr_ro - sizeof(siginfo_t) * 2);
        if (ret != 2) {
                err("sys_ptrace() returns %d (expected 2): %m\n", ret);
-               goto out;
+               goto out_ro;
        }
 
        /* Read-only buffer */
@@ -93,11 +93,13 @@ static int check_error_paths(pid_t child)
                err("sys_ptrace() returns %d (expected -1),"
                                " errno %d (expected %d): %m\n",
                                ret, errno, EFAULT);
-               goto out;
+               goto out_ro;
        }
 
        exit_code = 0;
-out:
+out_ro:
+       munmap(addr_ro, PAGE_SIZE);
+out_rw:
        munmap(addr_rw, 2 * PAGE_SIZE);
        return exit_code;
 }
-- 
2.1.0