commit 288fbb4b71343516cee6f6a44b9ec55d82fb1532
Author: Holger Dengler <dengler@linux.ibm.com>
Date:   Wed Sep 27 15:37:29 2023 +0200

    Fix state handling of shake_final for s390x.
    
    The digest life-cycle state diagram has been updated for XOF. Fix the
    state handling in s390x_shake_final() according to the updated state
    diagram.
    
    Signed-off-by: Holger Dengler <dengler@linux.ibm.com>
    
    Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
    Reviewed-by: Todd Short <todd.short@me.com>
    Reviewed-by: Tomas Mraz <tomas@openssl.org>
    (Merged from https://github.com/openssl/openssl/pull/22221)

Index: openssl-3.2.3/providers/implementations/digests/sha3_prov.c
===================================================================
--- openssl-3.2.3.orig/providers/implementations/digests/sha3_prov.c
+++ openssl-3.2.3/providers/implementations/digests/sha3_prov.c
@@ -217,6 +217,10 @@ static int s390x_shake_final(void *vctx,
 
     if (!ossl_prov_is_running())
         return 0;
+    if (!(ctx->xof_state == XOF_STATE_INIT ||
+          ctx->xof_state == XOF_STATE_ABSORB))
+        return 0;
+    ctx->xof_state = XOF_STATE_FINAL;
     s390x_klmd(ctx->buf, ctx->bufsz, out, outlen, ctx->pad, ctx->A);
     return 1;
 }