From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 1786243AC4 for ; Wed, 15 Nov 2023 20:49:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="RG4PxqG+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BADB5C4AF69; Wed, 15 Nov 2023 20:49:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700081396; bh=4TJvYqPD/spiVTKi5o+kEp0g/0QVRhJWy9FBv0VurMM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RG4PxqG+TKO8mkTOmOTBpTDOOFL5Y3DoO9Y0MinRlZ7rGoFUX9tLv98P1JnoCA1Sf R2U5T12TL5iS0AaVV1jOn3OB963OF3jxMxJi3Q0uHrI9n8GmgJ0tiuDshTzzxt9+qO VLEjBtR8S/HEHFOsXvLFTLa6xZ9LGE7JB9s4Oq0s= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Christophe JAILLET , Herbert Xu , Sasha Levin Subject: [PATCH 5.15 128/244] crypto: hisilicon/hpre - Fix a erroneous check after snprintf() Date: Wed, 15 Nov 2023 15:35:20 -0500 Message-ID: <20231115203556.058670143@linuxfoundation.org> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231115203548.387164783@linuxfoundation.org> References: <20231115203548.387164783@linuxfoundation.org> User-Agent: quilt/0.67 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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Christophe JAILLET [ Upstream commit c977950146720abff14e46d8c53f5638b06a9182 ] This error handling looks really strange. Check if the string has been truncated instead. Fixes: 02ab994635eb ("crypto: hisilicon - Fixed some tiny bugs of HPRE") Signed-off-by: Christophe JAILLET Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- drivers/crypto/hisilicon/hpre/hpre_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/hisilicon/hpre/hpre_main.c b/drivers/crypto/hisilicon/hpre/hpre_main.c index edc61e4105f30..08e56f1da365c 100644 --- a/drivers/crypto/hisilicon/hpre/hpre_main.c +++ b/drivers/crypto/hisilicon/hpre/hpre_main.c @@ -854,7 +854,7 @@ static int hpre_cluster_debugfs_init(struct hisi_qm *qm) for (i = 0; i < clusters_num; i++) { ret = snprintf(buf, HPRE_DBGFS_VAL_MAX_LEN, "cluster%d", i); - if (ret < 0) + if (ret >= HPRE_DBGFS_VAL_MAX_LEN) return -EINVAL; tmp_d = debugfs_create_dir(buf, qm->debug.debug_root); -- 2.42.0