diff --git a/tools/testing/selftests/mm/mseal_test.c b/tools/testing/selftests/mm/mseal_test.c
index a818f010de47..45d299fd74ed 100644
--- a/tools/testing/selftests/mm/mseal_test.c
+++ b/tools/testing/selftests/mm/mseal_test.c
@@ -110,6 +110,16 @@ static int sys_madvise(void *start, size_t len, int types)
 	return sret;
 }
 
+static void *sys_mremap(void *addr, size_t old_len, size_t new_len,
+	unsigned long flags, void *new_addr)
+{
+	void *sret;
+
+	errno = 0;
+	sret = (void *) syscall(__NR_mremap, addr, old_len, new_len, flags, new_addr);
+	return sret;
+}
+
 static int sys_pkey_alloc(unsigned long flags, unsigned long init_val)
 {
 	int ret = syscall(__NR_pkey_alloc, flags, init_val);
@@ -1115,12 +1125,12 @@ static void test_seal_mremap_shrink(bool seal)
 	}
 
 	/* shrink from 4 pages to 2 pages. */
-	ret2 = mremap(ptr, size, 2 * page_size, 0, 0);
+	ret2 = sys_mremap(ptr, size, 2 * page_size, 0, 0);
 	if (seal) {
-		FAIL_TEST_IF_FALSE(ret2 == MAP_FAILED);
+		FAIL_TEST_IF_FALSE(ret2 == (void *) MAP_FAILED);
 		FAIL_TEST_IF_FALSE(errno == EPERM);
 	} else {
-		FAIL_TEST_IF_FALSE(ret2 != MAP_FAILED);
+		FAIL_TEST_IF_FALSE(ret2 != (void *) MAP_FAILED);
 
 	}
 
@@ -1147,7 +1157,7 @@ static void test_seal_mremap_expand(bool seal)
 	}
 
 	/* expand from 2 page to 4 pages. */
-	ret2 = mremap(ptr, 2 * page_size, 4 * page_size, 0, 0);
+	ret2 = sys_mremap(ptr, 2 * page_size, 4 * page_size, 0, 0);
 	if (seal) {
 		FAIL_TEST_IF_FALSE(ret2 == MAP_FAILED);
 		FAIL_TEST_IF_FALSE(errno == EPERM);
@@ -1180,7 +1190,7 @@ static void test_seal_mremap_move(bool seal)
 	}
 
 	/* move from ptr to fixed address. */
-	ret2 = mremap(ptr, size, size, MREMAP_MAYMOVE | MREMAP_FIXED, newPtr);
+	ret2 = sys_mremap(ptr, size, size, MREMAP_MAYMOVE | MREMAP_FIXED, newPtr);
 	if (seal) {
 		FAIL_TEST_IF_FALSE(ret2 == MAP_FAILED);
 		FAIL_TEST_IF_FALSE(errno == EPERM);
@@ -1299,7 +1309,7 @@ static void test_seal_mremap_shrink_fixed(bool seal)
 	}
 
 	/* mremap to move and shrink to fixed address */
-	ret2 = mremap(ptr, size, 2 * page_size, MREMAP_MAYMOVE | MREMAP_FIXED,
+	ret2 = sys_mremap(ptr, size, 2 * page_size, MREMAP_MAYMOVE | MREMAP_FIXED,
 			newAddr);
 	if (seal) {
 		FAIL_TEST_IF_FALSE(ret2 == MAP_FAILED);
@@ -1330,7 +1340,7 @@ static void test_seal_mremap_expand_fixed(bool seal)
 	}
 
 	/* mremap to move and expand to fixed address */
-	ret2 = mremap(ptr, page_size, size, MREMAP_MAYMOVE | MREMAP_FIXED,
+	ret2 = sys_mremap(ptr, page_size, size, MREMAP_MAYMOVE | MREMAP_FIXED,
 			newAddr);
 	if (seal) {
 		FAIL_TEST_IF_FALSE(ret2 == MAP_FAILED);
@@ -1361,7 +1371,7 @@ static void test_seal_mremap_move_fixed(bool seal)
 	}
 
 	/* mremap to move to fixed address */
-	ret2 = mremap(ptr, size, size, MREMAP_MAYMOVE | MREMAP_FIXED, newAddr);
+	ret2 = sys_mremap(ptr, size, size, MREMAP_MAYMOVE | MREMAP_FIXED, newAddr);
 	if (seal) {
 		FAIL_TEST_IF_FALSE(ret2 == MAP_FAILED);
 		FAIL_TEST_IF_FALSE(errno == EPERM);
@@ -1390,14 +1400,13 @@ static void test_seal_mremap_move_fixed_zero(bool seal)
 	/*
 	 * MREMAP_FIXED can move the mapping to zero address
 	 */
-	ret2 = mremap(ptr, size, 2 * page_size, MREMAP_MAYMOVE | MREMAP_FIXED,
+	ret2 = sys_mremap(ptr, size, 2 * page_size, MREMAP_MAYMOVE | MREMAP_FIXED,
 			0);
 	if (seal) {
 		FAIL_TEST_IF_FALSE(ret2 == MAP_FAILED);
 		FAIL_TEST_IF_FALSE(errno == EPERM);
 	} else {
 		FAIL_TEST_IF_FALSE(ret2 == 0);
-
 	}
 
 	REPORT_TEST_PASS();
@@ -1420,13 +1429,12 @@ static void test_seal_mremap_move_dontunmap(bool seal)
 	}
 
 	/* mremap to move, and don't unmap src addr. */
-	ret2 = mremap(ptr, size, size, MREMAP_MAYMOVE | MREMAP_DONTUNMAP, 0);
+	ret2 = sys_mremap(ptr, size, size, MREMAP_MAYMOVE | MREMAP_DONTUNMAP, 0);
 	if (seal) {
 		FAIL_TEST_IF_FALSE(ret2 == MAP_FAILED);
 		FAIL_TEST_IF_FALSE(errno == EPERM);
 	} else {
 		FAIL_TEST_IF_FALSE(ret2 != MAP_FAILED);
-
 	}
 
 	REPORT_TEST_PASS();
@@ -1449,18 +1457,16 @@ static void test_seal_mremap_move_dontunmap_anyaddr(bool seal)
 	}
 
 	/*
-	 * The 0xdeaddead should not have effect on dest addr
+	 * The 0xdead0000 should not have effect on dest addr
 	 * when MREMAP_DONTUNMAP is set.
 	 */
-	ret2 = mremap(ptr, size, size, MREMAP_MAYMOVE | MREMAP_DONTUNMAP,
-			0xdeaddead);
+	ret2 = sys_mremap(ptr, size, size, MREMAP_MAYMOVE | MREMAP_DONTUNMAP,
+			(void *) 0xdead0000);
 	if (seal) {
-		FAIL_TEST_IF_FALSE(ret2 == MAP_FAILED);
+		FAIL_TEST_IF_FALSE(ret2 == (void *) MAP_FAILED);
 		FAIL_TEST_IF_FALSE(errno == EPERM);
 	} else {
-		FAIL_TEST_IF_FALSE(ret2 != MAP_FAILED);
-		FAIL_TEST_IF_FALSE((long)ret2 != 0xdeaddead);
-
+		FAIL_TEST_IF_FALSE(ret2 == (void *) 0xdead0000);
 	}
 
 	REPORT_TEST_PASS();
