[PATCH 4/8] Replace memset() with memzero_explicit()

* [PATCH 4/8] Replace memset() with memzero_explicit()
@ 2021-11-16 11:32 Sandy Harris
  0 siblings, 0 replies; only message in thread
From: Sandy Harris @ 2021-11-16 11:32 UTC (permalink / raw)
  To: LKML, Linux Crypto Mailing List, David S. Miller, Herbert Xu,
	Greg Kroah-Hartman

Replace memset(address,0,bytes) which may be optimised
away with memzero_explicit(address,bytes) which resists
such optimisation

---
 crypto/echainiv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/echainiv.c b/crypto/echainiv.c
index 69686668625e..6a7321da2fc1 100644
--- a/crypto/echainiv.c
+++ b/crypto/echainiv.c
@@ -64,7 +64,7 @@ static int echainiv_encrypt(struct aead_request *req)

     memcpy(&nseqno, info + ivsize - 8, 8);
     seqno = be64_to_cpu(nseqno);
-    memset(info, 0, ivsize);
+    memzero_explicit(info, ivsize);

     scatterwalk_map_and_copy(info, req->dst, req->assoclen, ivsize, 1);

--

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