[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20200415183411.12368-10-paulmck@kernel.org>
Date: Wed, 15 Apr 2020 11:34:06 -0700
From: paulmck@...nel.org
To: linux-kernel@...r.kernel.org, kasan-dev@...glegroups.com,
kernel-team@...com, mingo@...nel.org
Cc: elver@...gle.com, andreyknvl@...gle.com, glider@...gle.com,
dvyukov@...gle.com, cai@....pw, boqun.feng@...il.com,
"Paul E . McKenney" <paulmck@...nel.org>
Subject: [PATCH v4 tip/core/rcu 10/15] objtool, kcsan: Add explicit check functions to uaccess whitelist
From: Marco Elver <elver@...gle.com>
Add explicitly invoked KCSAN check functions to objtool's uaccess
whitelist. This is needed in order to permit calling into
kcsan_check_scoped_accesses() from the fast-path, which in turn calls
__kcsan_check_access(). __kcsan_check_access() is the generic variant
of the already whitelisted specializations __tsan_{read,write}N.
Signed-off-by: Marco Elver <elver@...gle.com>
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
tools/objtool/check.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index b6da413..b6a573d 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -468,8 +468,10 @@ static const char *uaccess_safe_builtin[] = {
"__asan_report_store8_noabort",
"__asan_report_store16_noabort",
/* KCSAN */
+ "__kcsan_check_access",
"kcsan_found_watchpoint",
"kcsan_setup_watchpoint",
+ "kcsan_check_scoped_accesses",
/* KCSAN/TSAN */
"__tsan_func_entry",
"__tsan_func_exit",
--
2.9.5
Powered by blists - more mailing lists