From: Arnd Bergmann <arnd@kernel.org>
To: Herbert Xu <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>
Cc: Arnd Bergmann <arnd@arndb.de>,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] crypto: wp512: disable kmsan checks in wp512_process_buffer()
Date: Thu, 15 Dec 2022 17:29:38 +0100 [thread overview]
Message-ID: <20221215162956.4037570-1-arnd@kernel.org> (raw)
From: Arnd Bergmann <arnd@arndb.de>
The memory sanitizer causes excessive register spills in this function:
crypto/wp512.c:782:13: error: stack frame size (2104) exceeds limit (2048) in 'wp512_process_buffer' [-Werror,-Wframe-larger-than]
Assume that this one is safe, and mark it as needing no checks to
get the stack usage back down to the normal level.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
crypto/wp512.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/crypto/wp512.c b/crypto/wp512.c
index 5e820afa3c78..07994e5ebf4e 100644
--- a/crypto/wp512.c
+++ b/crypto/wp512.c
@@ -779,7 +779,7 @@ static const u64 rc[WHIRLPOOL_ROUNDS] = {
* The core Whirlpool transform.
*/
-static void wp512_process_buffer(struct wp512_ctx *wctx) {
+static __no_kmsan_checks void wp512_process_buffer(struct wp512_ctx *wctx) {
int i, r;
u64 K[8]; /* the round key */
u64 block[8]; /* mu(buffer) */
--
2.35.1
next reply other threads:[~2022-12-15 16:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-15 16:29 Arnd Bergmann [this message]
2022-12-16 16:08 ` [PATCH] crypto: wp512: disable kmsan checks in wp512_process_buffer() Alexander Potapenko
2022-12-16 18:29 ` Arnd Bergmann
2022-12-30 15:14 ` Herbert Xu
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