linux-kernel - [PATCH 2/2] objtool, kcsan: Add kcsan_disable_current() and kcsan_enable_current

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Message-Id: <20200424154730.190041-2-elver@google.com>
Date:   Fri, 24 Apr 2020 17:47:30 +0200
From:   Marco Elver <elver@...gle.com>
To:     elver@...gle.com
Cc:     paulmck@...nel.org, dvyukov@...gle.com, glider@...gle.com,
        andreyknvl@...gle.com, will@...nel.org, kasan-dev@...glegroups.com,
        linux-kernel@...r.kernel.org, jpoimboe@...hat.com,
        peterz@...radead.org
Subject: [PATCH 2/2] objtool, kcsan: Add kcsan_disable_current() and kcsan_enable_current_nowarn()

Both are safe to be called from uaccess contexts.

Signed-off-by: Marco Elver <elver@...gle.com>
---
 tools/objtool/check.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 70e721002743..a22272c819f3 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -482,6 +482,8 @@ static const char *uaccess_safe_builtin[] = {
 	"kcsan_found_watchpoint",
 	"kcsan_setup_watchpoint",
 	"kcsan_check_scoped_accesses",
+	"kcsan_disable_current",
+	"kcsan_enable_current_nowarn",
 	/* KCSAN/TSAN */
 	"__tsan_func_entry",
 	"__tsan_func_exit",
-- 
2.26.2.303.gf8c07b1a785-goog