From: Marco Elver <elver@google.com>
Date: Tue, 30 Nov 2021 11:44:30 +0000 (+0100)
Subject: objtool, kcsan: Add memory barrier instrumentation to whitelist
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=0525bd82f6a9b5860ed3ea53520ac11ebfa09d5b;p=linux.git

objtool, kcsan: Add memory barrier instrumentation to whitelist

Adds KCSAN's memory barrier instrumentation to objtool's uaccess
whitelist.

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 21735829b860c..61dfb66b30b64 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -849,6 +849,10 @@ static const char *uaccess_safe_builtin[] = {
 	"__asan_report_store16_noabort",
 	/* KCSAN */
 	"__kcsan_check_access",
+	"__kcsan_mb",
+	"__kcsan_wmb",
+	"__kcsan_rmb",
+	"__kcsan_release",
 	"kcsan_found_watchpoint",
 	"kcsan_setup_watchpoint",
 	"kcsan_check_scoped_accesses",