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Subject[PATCH 1/3] stress-shm-sysv: exercise shmat with invalid flags
Date
Exercise shmat syscall with invalid flags resulting in more kernel
coverage.

Signed-off-by: Piyush Goyal <piyushgoyaliit@gmail.com>
---
stress-shm-sysv.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/stress-shm-sysv.c b/stress-shm-sysv.c
index aa03d718..5a3e0cc1 100644
--- a/stress-shm-sysv.c
+++ b/stress-shm-sysv.c
@@ -128,6 +128,19 @@ static int stress_shm_sysv_check(
return 0;
}

+/*
+ * exercise_shmat()
+ * exercise shmat syscall with all possible values of arguments
+ */
+static void exercise_shmat(int shm_id)
+{
+ void *addr;
+
+ /* Exercise shmat syscall with invalid flags */
+ addr = shmat(shm_id, NULL, ~0);
+ (void)addr;
+}
+
#if defined(__linux__)
/*
* stress_shm_get_procinfo()
@@ -337,6 +350,7 @@ static int stress_shm_sysv_child(
goto reap;
}

+ exercise_shmat(shm_id);
addr = shmat(shm_id, NULL, 0);
if (addr == (char *) -1) {
ok = false;
--
2.25.1
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