[PATCH 42/43] objtool: kmsan: list KMSAN API functions as uaccess-safe

[Alexander Potapenko]

KMSAN inserts API function calls in a lot of places (function entries
and exits, local variables, memory accesses), so they may get called
from the uaccess regions as well.

Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
---
Link: https://linux-review.googlesource.com/id/I242bc9816273fecad4ea3d977393784396bb3c35
---
 tools/objtool/check.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 21735829b860c..9620b5224754e 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -937,6 +937,25 @@ static const char *uaccess_safe_builtin[] = {
 	"__sanitizer_cov_trace_cmp4",
 	"__sanitizer_cov_trace_cmp8",
 	"__sanitizer_cov_trace_switch",
+	/* KMSAN */
+	"kmsan_copy_to_user",
+	"kmsan_report",
+	"kmsan_unpoison_memory",
+	"__msan_chain_origin",
+	"__msan_get_context_state",
+	"__msan_instrument_asm_store",
+	"__msan_metadata_ptr_for_load_1",
+	"__msan_metadata_ptr_for_load_2",
+	"__msan_metadata_ptr_for_load_4",
+	"__msan_metadata_ptr_for_load_8",
+	"__msan_metadata_ptr_for_load_n",
+	"__msan_metadata_ptr_for_store_1",
+	"__msan_metadata_ptr_for_store_2",
+	"__msan_metadata_ptr_for_store_4",
+	"__msan_metadata_ptr_for_store_8",
+	"__msan_metadata_ptr_for_store_n",
+	"__msan_poison_alloca",
+	"__msan_warning",
 	/* UBSAN */
 	"ubsan_type_mismatch_common",
 	"__ubsan_handle_type_mismatch",
-- 
2.34.1.173.g76aa8bc2d0-goog