madvise: Add locked-page check to MADV_REMOVE

Change-Id: I95465ef11aa4c772ad0ecf5d25f757192f31b93b refs: #1372
2020-03-06 15:02:31 +09:00
parent c78803ac08
commit 01d06cb218
4 changed files with 83 additions and 0 deletions
--- a/kernel/syscall.c
+++ b/kernel/syscall.c
@ -5368,6 +5368,11 @@ SYSCALL_DECLARE(madvise)
 		}

 		if (advice == MADV_REMOVE) {
+			if (range->flag & VR_LOCKED) {
+				error = -EINVAL;
+				goto out;
+			}
+
 			if (!range->memobj || !memobj_is_removable(range->memobj)) {
 				dkprintf("sys_madvise(%lx,%lx,%x):"
 						"not removable [%lx-%lx)\n",