From e1b1c7f941712f20e0ce71ad181eba568865cdc2 Mon Sep 17 00:00:00 2001 From: Ilya Leoshkevich Date: Fri, 21 Jun 2024 13:35:09 +0200 Subject: [PATCH] s390/checksum: add a KMSAN check 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"). Link: https://lkml.kernel.org/r/20240621113706.315500-26-iii@linux.ibm.com Signed-off-by: Ilya Leoshkevich Acked-by: Alexander Gordeev Reviewed-by: Alexander Potapenko Cc: Christian Borntraeger Cc: Christoph Lameter Cc: David Rientjes Cc: Dmitry Vyukov Cc: Heiko Carstens Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Joonsoo Kim Cc: Cc: Marco Elver Cc: Mark Rutland Cc: Masami Hiramatsu (Google) Cc: Pekka Enberg Cc: Roman Gushchin Cc: Steven Rostedt (Google) Cc: Sven Schnelle Cc: Vasily Gorbik Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- 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 +#include #include 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" -- 2.49.0