Exercise shmat syscall with all possible flags resulting in more kernel
coverage.

Signed-off-by: Piyush Goyal <[email protected]>
---
 stress-shm-sysv.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/stress-shm-sysv.c b/stress-shm-sysv.c
index 5a3e0cc1..9efaa091 100644
--- a/stress-shm-sysv.c
+++ b/stress-shm-sysv.c
@@ -139,6 +139,16 @@ static void exercise_shmat(int shm_id)
        /* Exercise shmat syscall with invalid flags */
        addr = shmat(shm_id, NULL, ~0);
        (void)addr;
+
+       /* Exercise shmat with all possible values of flags */
+       addr = shmat(shm_id, NULL, SHM_RDONLY);
+       (void)addr;
+
+       addr = shmat(shm_id, NULL, SHM_EXEC);
+       (void)addr;
+
+       addr = shmat(shm_id, NULL, SHM_RND);
+       (void)addr;
 }
 
 #if defined(__linux__)
-- 
2.25.1

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