Add a KMSAN check to the CKSM inline assembly, similar to how it was
done for ASAN in commit e42ac7789df6 ("s390/checksum: always use cksm
instruction").
Acked-by: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx>
Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
---
arch/s390/include/asm/checksum.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/s390/include/asm/checksum.h b/arch/s390/include/asm/checksum.h
index b89159591ca0..46f5c9660616 100644
--- a/arch/s390/include/asm/checksum.h
+++ b/arch/s390/include/asm/checksum.h
@@ -13,6 +13,7 @@
#define _S390_CHECKSUM_H
#include <linux/instrumented.h>
+#include <linux/kmsan-checks.h>
#include <linux/in6.h>
static inline __wsum cksm(const void *buff, int len, __wsum sum)
@@ -23,6 +24,7 @@ static inline __wsum cksm(const void *buff, int len, __wsum sum)
};
instrument_read(buff, len);
+ kmsan_check_memory(buff, len);
asm volatile("\n"
"0: cksm %[sum],%[rp]\n"
" jo 0b\n"
--
2.45.1
