diff --git a/drivers/gpu/nvgpu/libnvgpu-drv_safe.export b/drivers/gpu/nvgpu/libnvgpu-drv_safe.export
index 17d276552..9c7fb7833 100644
--- a/drivers/gpu/nvgpu/libnvgpu-drv_safe.export
+++ b/drivers/gpu/nvgpu/libnvgpu-drv_safe.export
@@ -616,6 +616,7 @@ nvgpu_pmu_early_init
 nvgpu_pmu_remove_support
 nvgpu_pmu_reset
 nvgpu_posix_bug
+nvgpu_posix_warn
 nvgpu_posix_cleanup
 nvgpu_posix_enable_fault_injection
 nvgpu_posix_fault_injection_get_container
diff --git a/userspace/units/posix/bug/posix-bug.c b/userspace/units/posix/bug/posix-bug.c
index 457a03e62..f7598adb4 100644
--- a/userspace/units/posix/bug/posix-bug.c
+++ b/userspace/units/posix/bug/posix-bug.c
@@ -138,9 +138,28 @@ int test_bug_cb(struct unit_module *m,
 	return UNIT_SUCCESS;
 }
 
+int test_warn_msg(struct unit_module *m,
+		struct gk20a *g, void *args)
+{
+	bool ret;
+
+	ret = nvgpu_posix_warn(0, "");
+	if (ret != 0) {
+		unit_return_fail(m, "nvgpu_posix_warn failed for cond 0\n");
+	}
+
+	ret = nvgpu_posix_warn(1, "");
+	if (ret != 1) {
+		unit_return_fail(m, "nvgpu_posix_warn failed for cond 1\n");
+	}
+
+	return UNIT_SUCCESS;
+}
+
 struct unit_module_test posix_bug_tests[] = {
 	UNIT_TEST(expect_bug, test_expect_bug, NULL, 0),
 	UNIT_TEST(bug_cb, test_bug_cb, NULL, 0),
+	UNIT_TEST(warn_msg, test_warn_msg, NULL, 0),
 };
 
 UNIT_MODULE(posix_bug, posix_bug_tests, UNIT_PRIO_POSIX_TEST);
diff --git a/userspace/units/posix/bug/posix-bug.h b/userspace/units/posix/bug/posix-bug.h
index 9d4fb69b9..a7bf47da1 100644
--- a/userspace/units/posix/bug/posix-bug.h
+++ b/userspace/units/posix/bug/posix-bug.h
@@ -86,4 +86,31 @@ int test_expect_bug(struct unit_module *m, struct gk20a *g, void *args);
  */
 int test_bug_cb(struct unit_module *m, struct gk20a *g, void *args);
 
+/**
+ * Test specification for test_warn_msg
+ *
+ * Description: Test the warn message functionality.
+ *
+ * Test Type: Feature
+ *
+ * Targets: nvgpu_posix_warn
+ *
+ * Inputs: None
+ *
+ * Steps:
+ * 1) Call nvgpu_posix_warn function with cond as 0.
+ * 2) Check the return value from function nvgpu_posix_warn. If it is not
+ *    equal to 0, return FAIL.
+ * 3) Call nvgpu_posix_warn function with cond as 1.
+ * 4) Check the return value from function nvgpu_posix_warn. If it is not
+ *    equal to 1, return FAIL.
+ * 5) Return PASS.
+ *
+ * Output:
+ * The test returns PASS if both the calls of nvgpu_posix_warn function returns
+ * the expected return value. Otherwise, the test returns FAIL.
+ *
+ */
+int test_warn_msg(struct unit_module *m, struct gk20a *g, void *args);
+
 #endif /* __UNIT_POSIX_BUG_H__ */