This is a pre-requisite for enabling bitops instrumentation. Some bitops
may safely be used with instrumentation in uaccess regions.
For example, on x86, `test_bit` is used to test a CPU-feature in a
uaccess region: arch/x86/ia32/ia32_signal.c:361
Signed-off-by: Marco Elver <elver@xxxxxxxxxx>
---
tools/objtool/check.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 172f99195726..eff0e5209402 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -443,6 +443,8 @@ static void add_ignores(struct objtool_file *file)
static const char *uaccess_safe_builtin[] = {
/* KASAN */
"kasan_report",
+ "kasan_check_read",
+ "kasan_check_write",
"check_memory_region",
/* KASAN out-of-line */
"__asan_loadN_noabort",
--
2.22.0.rc1.257.g3120a18244-goog
