diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 7057ee01178b..8f972e746990 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -4894,6 +4894,13 @@ sub process {
 			     "Avoid line continuations in quoted strings\n" . $herecurr);
 		}
 
+# sys_open/read/write/close are not allowed in the kernel
+		if ($line =~ /\b(sys_(?:open|read|write|close))\b/) {
+			ERROR("FILE_OPS",
+			      "$1 is inappropriate in kernel code.\n" .
+			      $herecurr);
+		}
+
 # warn about #if 0
 		if ($line =~ /^.\s*\#\s*if\s+0\b/) {
 			WARN("IF_0",