Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2CA513DEAEC; Thu, 17 Sep 2026 17:34:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789666472; cv=none; b=WnqNnE2sMXYPfi1JfCpAlZ7RT7KNTPmjuZbP5ceM75K/mOYcXJc+TQm2Pw5I5WZXqnhkrIccIlYbGGnmSeB3WBdbIHbd2v3/CNk9gO6TZzvN+42qHYkQSSN6paRcxAwOJ1t631467GeoSlkUX7scajI0bpeG+Tfryj1hJmB5ba4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789666472; c=relaxed/simple; bh=gSHf3Zdhr9kaDeHpffrz9QJVER7T1OkszzrTDLlxEj4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SR/pUXQ0Nqs0TbWV09hOQPSh6AGAzI22RytDiQi4mPq/hQE0ZQu7J/0ijOQe+xnE7ZvcfZ6rfLPg6vf6RUf/VgzyibWfuTw+yEcDQ0nAPAUYEgrSr8sjFKAKVZpO1rMijspPg1N+990Id8RN+rjN9nmyANHAkJQlY6eJQpYrVtY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=JE4yxas7; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="JE4yxas7" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 40B201F00893; Thu, 17 Sep 2026 17:34:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789666470; bh=drN3+afwk/bhYHQQBxOZTw3sPnYsZVttFDMmuqU+Tdg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=JE4yxas7Nmj4TjV5DJ/j0icOPkT0mB674dhMWWfBEusvV13e5IenGfJSzCgJ9oQR/ lzdR4mbN77iBE5hptw20Rexf9PadMMB8MHITS68wq2VR1lghL0lklDmWb4SDBWJp5m ZuZyarKv7XkWjLthxMpouDim8NXUp99dHUXAl+hE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Harald Freudenberger , Holger Dengler , Heiko Carstens , Vasily Gorbik Subject: [PATCH 6.18 1048/1250] s390/crypto: Fix wrong return code to engine in asynch callbacks Date: Thu, 17 Sep 2026 16:14:03 +0100 Message-ID: <20260917151620.505540522@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260917151551.901433442@linuxfoundation.org> References: <20260917151551.901433442@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Harald Freudenberger commit ac1481320110b803ab9b79ab4d2ca11a74fc05f2 upstream. When crypto_finalize_hash_request() or crypto_finalize_skcipher_request() explicitly completes a request, the do_one_request callback must return 0 to indicate successful handling. Returning a negative error code causes the crypto engine to assume the driver failed to take ownership and triggers a second completion via crypto_request_complete(), resulting in a double completion. This pattern occurs in paes_s390.c 4 times and once in phmac_s390.c. Fixed in phmac_do_one_request() and all four paes do_one_request callbacks (ecb, cbc, ctr, xts) by returning 0 after explicit finalization instead of propagating the error code. Fixes: 6cd87cb5ef6c ("s390/crypto: Rework protected key AES for true asynch support") Signed-off-by: Harald Freudenberger Reviewed-by: Holger Dengler Cc: stable@vger.kernel.org # 6.16+ Signed-off-by: Heiko Carstens Signed-off-by: Vasily Gorbik Signed-off-by: Greg Kroah-Hartman --- arch/s390/crypto/paes_s390.c | 8 ++++---- arch/s390/crypto/phmac_s390.c | 2 +- 2 files changed, 5 insertions(+), 5 deletions(-) --- a/arch/s390/crypto/paes_s390.c +++ b/arch/s390/crypto/paes_s390.c @@ -558,7 +558,7 @@ static int ecb_paes_do_one_request(struc atomic_dec(&ctx->via_engine_ctr); crypto_finalize_skcipher_request(engine, req, rc); local_bh_enable(); - return rc; + return 0; } static struct skcipher_engine_alg ecb_paes_alg = { @@ -822,7 +822,7 @@ static int cbc_paes_do_one_request(struc atomic_dec(&ctx->via_engine_ctr); crypto_finalize_skcipher_request(engine, req, rc); local_bh_enable(); - return rc; + return 0; } static struct skcipher_engine_alg cbc_paes_alg = { @@ -1129,7 +1129,7 @@ static int ctr_paes_do_one_request(struc atomic_dec(&ctx->via_engine_ctr); crypto_finalize_skcipher_request(engine, req, rc); local_bh_enable(); - return rc; + return 0; } static struct skcipher_engine_alg ctr_paes_alg = { @@ -1569,7 +1569,7 @@ static int xts_paes_do_one_request(struc atomic_dec(&ctx->via_engine_ctr); crypto_finalize_skcipher_request(engine, req, rc); local_bh_enable(); - return rc; + return 0; } static struct skcipher_engine_alg xts_paes_alg = { --- a/arch/s390/crypto/phmac_s390.c +++ b/arch/s390/crypto/phmac_s390.c @@ -935,7 +935,7 @@ out: atomic_dec(&tfm_ctx->via_engine_ctr); crypto_finalize_hash_request(engine, req, rc); local_bh_enable(); - return rc; + return 0; } #define S390_ASYNC_PHMAC_ALG(x) \