From nobody Wed Nov 27 06:26:34 2024 Received: from mout.web.de (mout.web.de [212.227.15.14]) (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 3DA7D13B293; Sat, 12 Oct 2024 08:07:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.227.15.14 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728720476; cv=none; b=UqGsduAp8l0VRnHErgPGFecItopwafpgF5rLsoi8ZwIAa/ov+1jZ7WbTmLmdbifFQZdIkNNQgdLgEF0bCHs5lTrpuZSMgv6MCjePk7f9R8SCB/GsEVzvY9ua6apmDxKcn4jchl6st0jc5egxf9mgY6rajfHxkwvt31SE7+JGWXs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728720476; c=relaxed/simple; bh=4OUtu+vUuFaklY8yFeTodT21IWQw/RcD0nuI88CgJ/U=; h=Message-ID:Date:MIME-Version:To:Cc:From:Subject:Content-Type; b=SddnioeR65lCQQGFgTlgo9IcwsAOjHa4sgo5y37xQkm09oqAw+BrLn84WNtLuz0/OcHNpCHrw3DlCyGiVlBquFElrKetJwIRPX+aUlwGvmYENJs9IqTlQMA0GSa67Mog7rvfXo8PMlBp/Pal+fbZK8rRS2Pwwv86Zvov6F+ANpk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=web.de; spf=pass smtp.mailfrom=web.de; dkim=pass (2048-bit key) header.d=web.de header.i=markus.elfring@web.de header.b=hSiOQwCe; arc=none smtp.client-ip=212.227.15.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=web.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=web.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=web.de header.i=markus.elfring@web.de header.b="hSiOQwCe" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=web.de; s=s29768273; t=1728720416; x=1729325216; i=markus.elfring@web.de; bh=dwS/0fwcxAGtAx0RykHa0uJRLJTggRpPoKajc9AhU6w=; h=X-UI-Sender-Class:Message-ID:Date:MIME-Version:To:Cc:From: Subject:Content-Type:Content-Transfer-Encoding:cc: content-transfer-encoding:content-type:date:from:message-id: mime-version:reply-to:subject:to; b=hSiOQwCejPDHvmE1YFkYsYsNPlmS+A1tW6uSWS7e8Iq0vqrRWFy1B/kAcNn6fBXG 7uFOkOjIFctsFPXBdky4zSHbsJJQKfpwzCe3sBgwrzGN1rwbdEClwx0WcZDYFpyr/ tO6gC+yKS4PFK7PcyEGhl8Qurzjwhk87ZoejwTm1fVI2kgguIW7pcpUt9YQHbZz+N wdSUg3TuAgVUlFupwJ38QbhSZm0l2kHrp00yn45XC1mZE4NCGGxHlQmpUz0qmw/EQ 5qUhmM7KZ5vyH5mvhNArHCCItJtbNmQOoLcNysD3pn3600TMQSrtd2I0aP2S+/l7w ecRLFXNzO6ygnwt5Ng== X-UI-Sender-Class: 814a7b36-bfc1-4dae-8640-3722d8ec6cd6 Received: from [192.168.178.21] ([94.31.89.95]) by smtp.web.de (mrweb006 [213.165.67.108]) with ESMTPSA (Nemesis) id 1MMXx5-1tI1NH3M07-00Nmir; Sat, 12 Oct 2024 10:06:56 +0200 Message-ID: <80b91321-138c-41de-95c7-47c3be07fe76@web.de> Date: Sat, 12 Oct 2024 10:06:37 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird To: virtualization@lists.linux.dev, linux-crypto@vger.kernel.org, "David S. Miller" , =?UTF-8?Q?Eugenio_P=C3=A9rez?= , Gonglei , Herbert Xu , Jason Wang , lei he , "Michael S. Tsirkin" , Nathan Chancellor , Xuan Zhuo , zhenwei pi Content-Language: en-GB Cc: LKML From: Markus Elfring Subject: [PATCH] crypto: virtio/akcipher - Move a pointer assignment in virtio_crypto_rsa_set_key() Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:e9XQu3txqQMuk28YeVMcyqRiUe/NNPOYOcQnwtnCHuei9Kr5xRO 1MyDfaBl8Zqwnf6mw/mIsZ4X2+s+7IMMAmvO2uxRazyGJwblRH5jcf2mLiXmvWiHg0A3K+A a9AaiZ6U2F8FLtLNNS0QMtB/BbHXS2HeSHigrX1O29koDpgsE7YeGqk9QbgBWLKVr6mlvdY XMj4/KRaM80yAYI0xB+lg== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:IOMWIyk3DyY=;rIoHG5fyZ8z5zYh5RR9bCEfM5d6 TV60ICniC71FnE+95KeOAYnbBZR9oeoLP+ws9hbT/qaVe8yai+dhWgbcEzYr9/rLzu7kmEA8U 8Lv7DVWtygTmTtJ1nlenjh3FXh3xkv+G5xLwI2zh3PWe+YIDAHUx3l6sU9S5kBt2IXfWz/K1U wpMHpoqt8/bV5H4j8ySYCWKvszjdiltqyPmyQCGm6ZYqYiQYfKIHEo38MjAAlLEnUChUDGDqy qV9/vrvv6AOoLG2c9wmOCY44w/L6psWJJ2mVeqV3XFISViy+qAF0+4XvuQcrmkg2zSpRD1U+P ulLkA3Jr8csXpHDYUObS8RE7eqBoGFwJ60UCVFC0nqTHUMtjgReLaF38UaJjADf6bJpjrnl0F sN/bPeyGm1u/ukhwikVGGFLKABsnxQylL2qVO6PWPWi/c4XDT7HVqSkDEzoXRy+OCDEhxgsEl IJjGT2IDeu21TyIQLbVDypvszjUxnawPM7e0w/Jyijs8Lp8kAQd/Tm/ZH+7jqIqgMs1oA6Wd0 hFHV/GcHbHwB/tXhVJLRshPUL9e6pFPcUO0z3gmL4edExFvusYt3ZKymIJbl8zwonnSPk2dQB 4JoZA2f5K1e11NkDMzLM76TKqdYSU6MeQPaZIpwUI0JNaIM+N10DWy7WNl99KZDvImk6QAL0n maY2hIK15Oou5nLAXRpBi78Fc4WPdpFROJSh22mv48B7dMHBMy6DywmfRrLRl7YVjRseGRCJZ +YZKbhkYjdjd9qimeUQICwxT4FVDnGgnK4XFowlWTaRE4WaEUSUxH+M+Cuzci5sKWbTZQ1CVS YFdI13IS90LB7iH0WIOo1/MA== Content-Type: text/plain; charset="utf-8" From: Markus Elfring Date: Sat, 12 Oct 2024 09:51:58 +0200 Move the reset of the data structure member =E2=80=9Cn=E2=80=9D to a null p= ointer into an if branch so that this assignment will be performed only after a key parsing failure. Signed-off-by: Markus Elfring --- drivers/crypto/virtio/virtio_crypto_akcipher_algs.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/virtio/virtio_crypto_akcipher_algs.c b/drivers/= crypto/virtio/virtio_crypto_akcipher_algs.c index 48fee07b7e51..56557d4778b0 100644 --- a/drivers/crypto/virtio/virtio_crypto_akcipher_algs.c +++ b/drivers/crypto/virtio/virtio_crypto_akcipher_algs.c @@ -355,7 +355,6 @@ static int virtio_crypto_rsa_set_key(struct crypto_akci= pher *tfm, /* mpi_free will test n, just free it. */ mpi_free(rsa_ctx->n); - rsa_ctx->n =3D NULL; if (private) { keytype =3D VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PRIVATE; @@ -365,8 +364,10 @@ static int virtio_crypto_rsa_set_key(struct crypto_akc= ipher *tfm, ret =3D rsa_parse_pub_key(&rsa_key, key, keylen); } - if (ret) + if (ret) { + rsa_ctx->n =3D NULL; return ret; + } rsa_ctx->n =3D mpi_read_raw_data(rsa_key.n, rsa_key.n_sz); if (!rsa_ctx->n) -- 2.46.1