diff --git a/sys/crypto/armv8/armv8_crypto.c b/sys/crypto/armv8/armv8_crypto.c
index bc3e70f935b5..9975a2782229 100644
--- a/sys/crypto/armv8/armv8_crypto.c
+++ b/sys/crypto/armv8/armv8_crypto.c
@@ -357,10 +357,8 @@ armv8_crypto_cipher_process(struct armv8_crypto_session *ses,
 		fpu_kern_leave(curthread, ctx);
 		RELEASE_CTX(i, ctx);
 	}
-	if (allocated) {
-		bzero(buf, crp->crp_payload_length);
-		free(buf, M_ARMV8_CRYPTO);
-	}
+	if (allocated)
+		zfree(buf, M_ARMV8_CRYPTO);
 	return (0);
 }
 
diff --git a/sys/crypto/via/padlock_hash.c b/sys/crypto/via/padlock_hash.c
index c1bfce6135dc..1640bad4ea74 100644
--- a/sys/crypto/via/padlock_hash.c
+++ b/sys/crypto/via/padlock_hash.c
@@ -199,8 +199,7 @@ padlock_sha_free(void *vctx)
 
 	ctx = vctx;
 	if (ctx->psc_buf != NULL) {
-		//bzero(ctx->psc_buf, ctx->psc_size);
-		free(ctx->psc_buf, M_PADLOCK);
+		zfree(ctx->psc_buf, M_PADLOCK);
 		ctx->psc_buf = NULL;
 		ctx->psc_offset = 0;
 		ctx->psc_size = 0;
@@ -415,14 +414,12 @@ padlock_hash_free(struct padlock_session *ses)
 
 	if (ses->ses_ictx != NULL) {
 		padlock_free_ctx(ses->ses_axf, ses->ses_ictx);
-		bzero(ses->ses_ictx, ses->ses_axf->ctxsize);
-		free(ses->ses_ictx, M_PADLOCK);
+		zfree(ses->ses_ictx, M_PADLOCK);
 		ses->ses_ictx = NULL;
 	}
 	if (ses->ses_octx != NULL) {
 		padlock_free_ctx(ses->ses_axf, ses->ses_octx);
-		bzero(ses->ses_octx, ses->ses_axf->ctxsize);
-		free(ses->ses_octx, M_PADLOCK);
+		zfree(ses->ses_octx, M_PADLOCK);
 		ses->ses_octx = NULL;
 	}
 }
diff --git a/sys/dev/glxsb/glxsb_hash.c b/sys/dev/glxsb/glxsb_hash.c
index cae1c1980114..9fe73c88a7c6 100644
--- a/sys/dev/glxsb/glxsb_hash.c
+++ b/sys/dev/glxsb/glxsb_hash.c
@@ -145,13 +145,11 @@ glxsb_hash_free(struct glxsb_session *ses)
 {
 
 	if (ses->ses_ictx != NULL) {
-		bzero(ses->ses_ictx, ses->ses_axf->ctxsize);
-		free(ses->ses_ictx, M_GLXSB);
+		zfree(ses->ses_ictx, M_GLXSB);
 		ses->ses_ictx = NULL;
 	}
 	if (ses->ses_octx != NULL) {
-		bzero(ses->ses_octx, ses->ses_axf->ctxsize);
-		free(ses->ses_octx, M_GLXSB);
+		zfree(ses->ses_octx, M_GLXSB);
 		ses->ses_octx = NULL;
 	}
 }
diff --git a/sys/geom/eli/g_eli.c b/sys/geom/eli/g_eli.c
index 52082294b4e3..dbfb16c27d04 100644
--- a/sys/geom/eli/g_eli.c
+++ b/sys/geom/eli/g_eli.c
@@ -1005,8 +1005,7 @@ g_eli_create(struct gctl_req *req, struct g_class *mp, struct g_provider *bpp,
 	g_destroy_consumer(cp);
 	g_destroy_geom(gp);
 	g_eli_key_destroy(sc);
-	bzero(sc, sizeof(*sc));
-	free(sc, M_ELI);
+	zfree(sc, M_ELI);
 	return (NULL);
 }
 
@@ -1049,8 +1048,7 @@ g_eli_destroy(struct g_eli_softc *sc, boolean_t force)
 	mtx_destroy(&sc->sc_queue_mtx);
 	gp->softc = NULL;
 	g_eli_key_destroy(sc);
-	bzero(sc, sizeof(*sc));
-	free(sc, M_ELI);
+	zfree(sc, M_ELI);
 
 	G_ELI_DEBUG(0, "Device %s destroyed.", gp->name);
 	g_wither_geom_close(gp, ENXIO);