[PATCH 7/8] Replace memset() with memzero_explicit()

* [PATCH 7/8] Replace memset() with memzero_explicit()
@ 2021-11-16 11:38 Sandy Harris
  0 siblings, 0 replies; only message in thread
From: Sandy Harris @ 2021-11-16 11:38 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/sm2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/sm2.c b/crypto/sm2.c
index db8a4a265669..58641d964671 100644
--- a/crypto/sm2.c
+++ b/crypto/sm2.c
@@ -124,7 +124,7 @@ static void sm2_ec_ctx_deinit(struct mpi_ec_ctx *ec)
 {
     mpi_ec_deinit(ec);

-    memset(ec, 0, sizeof(*ec));
+    memzero_explicit(ec, sizeof(*ec));
 }

 /* RESULT must have been initialized and is set on success to the
--

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