[PATCH 3/3] stress-shmsysv: exercise shmat with SHM_REMAP flag on NULL address

Piyush Goyal piyushgoyaliit at gmail.com
Tue Sep 22 03:27:30 EDT 2020


Exercise shmat syscall with SHM_REMAP flag on NULL address resulting
in EINVAL error and more kernel coverage.

Signed-off-by: Piyush Goyal <piyushgoyaliit at gmail.com>
---
 stress-shm-sysv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/stress-shm-sysv.c b/stress-shm-sysv.c
index 9efaa091..e2aff788 100644
--- a/stress-shm-sysv.c
+++ b/stress-shm-sysv.c
@@ -149,6 +149,10 @@ static void exercise_shmat(int shm_id)
 
 	addr = shmat(shm_id, NULL, SHM_RND);
 	(void)addr;
+
+	/* Exercise shmat with SHM_REMAP flag on NULL address */
+	addr = shmat(shm_id, NULL, SHM_REMAP);
+	(void)addr;
 }
 
 #if defined(__linux__)
-- 
2.25.1




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