linux-kernel - [PATCH v2 2/8] objtool, kcsan: Add __tsan_read

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Date:   Fri, 24 Jul 2020 09:00:02 +0200
From:   Marco Elver <elver@...gle.com>
To:     elver@...gle.com, paulmck@...nel.org
Cc:     will@...nel.org, peterz@...radead.org, arnd@...db.de,
        mark.rutland@....com, dvyukov@...gle.com, glider@...gle.com,
        kasan-dev@...glegroups.com, linux-kernel@...r.kernel.org,
        linux-arch@...r.kernel.org
Subject: [PATCH v2 2/8] objtool, kcsan: Add __tsan_read_write to uaccess whitelist

Adds the new __tsan_read_write compound instrumentation to objtool's
uaccess whitelist.

Signed-off-by: Marco Elver <elver@...gle.com>
Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>
---
 tools/objtool/check.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 63d8b630c67a..38d82e705c93 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -528,6 +528,11 @@ static const char *uaccess_safe_builtin[] = {
 	"__tsan_write4",
 	"__tsan_write8",
 	"__tsan_write16",
+	"__tsan_read_write1",
+	"__tsan_read_write2",
+	"__tsan_read_write4",
+	"__tsan_read_write8",
+	"__tsan_read_write16",
 	"__tsan_atomic8_load",
 	"__tsan_atomic16_load",
 	"__tsan_atomic32_load",
-- 
2.28.0.rc0.142.g3c755180ce-goog