diff mbox series

[6/8] Replace memset() with memzero_explicit()

Message ID CACXcFm=02=y=+0m3h_q4X1Jtf--7Ou=tmvVMKjEC46tFGj=V4A@mail.gmail.com (mailing list archive)
State Changes Requested
Delegated to: Herbert Xu
Headers show
Series memset() in crypto code | expand

Commit Message

Sandy Harris Nov. 16, 2021, 11:36 a.m. UTC 
Replace memset(address,0,bytes) which may be optimised
away with memzero_explicit(address,bytes) which resists
such optimisation

---
 crypto/sha3_generic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/crypto/sha3_generic.c b/crypto/sha3_generic.c
index 3e4069935b53..cfc10dd62e02 100644
--- a/crypto/sha3_generic.c
+++ b/crypto/sha3_generic.c
@@ -232,7 +232,7 @@  int crypto_sha3_final(struct shash_desc *desc, u8 *out)
     if (digest_size & 4)
         put_unaligned_le32(sctx->st[i], (__le32 *)digest);

-    memset(sctx, 0, sizeof(*sctx));
+    memzero_explicit(sctx, sizeof(*sctx));
     return 0;
 }
 EXPORT_SYMBOL(crypto_sha3_final);