[LTP] [PATCH] syscalls/creat06: Fix the use of tst_brk() in cleanup

[Guangwen Feng]

Calling tst_brk() from the test cleanup would cause infinite
loop and segfault, we should call tst_res(TWARN) instead, and
the tst_umount() calls tst_res(TWARN) already, so we just use
the tst_umount() here.

Signed-off-by: Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
---
 testcases/kernel/syscalls/creat/creat06.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/testcases/kernel/syscalls/creat/creat06.c b/testcases/kernel/syscalls/creat/creat06.c
index 9c60fd0..73913cd 100644
--- a/testcases/kernel/syscalls/creat/creat06.c
+++ b/testcases/kernel/syscalls/creat/creat06.c
@@ -172,10 +172,8 @@ static void test6_cleanup(void)
 
 static void cleanup(void)
 {
-	if (mount_flag && tst_umount("mntpoint") < 0) {
-		tst_brk(TBROK | TERRNO, "umount device:%s failed",
-			tst_device->dev);
-	}
+	if (mount_flag)
+		tst_umount("mntpoint");
 }
 
 static struct tst_test test = {
-- 
1.8.4.2