From nobody Wed Feb 11 00:59:46 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1770066501318240.32872034376112; Mon, 2 Feb 2026 13:08:21 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vn174-00075r-55; Mon, 02 Feb 2026 16:05:38 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vn172-00073W-AB; Mon, 02 Feb 2026 16:05:36 -0500 Received: from isrv.corpit.ru ([212.248.84.144]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vn170-0005A4-3n; Mon, 02 Feb 2026 16:05:36 -0500 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id 1D0CF1851D2; Mon, 02 Feb 2026 23:57:57 +0300 (MSK) Received: from think4mjt.tls.msk.ru (mjtthink.wg.tls.msk.ru [192.168.177.146]) by tsrv.corpit.ru (Postfix) with ESMTP id D2C0D35B349; Mon, 02 Feb 2026 23:58:38 +0300 (MSK) From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Jeuk Kim , Michael Tokarev Subject: [Stable-10.1.4 70/74] hw/ufs: Ensure DBC of PRDT uses only lower 18 bits Date: Mon, 2 Feb 2026 23:58:21 +0300 Message-ID: <20260202205833.941615-70-mjt@tls.msk.ru> X-Mailer: git-send-email 2.47.3 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=212.248.84.144; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1770066503740154100 Content-Type: text/plain; charset="utf-8" From: Jeuk Kim The UFS spec defines the PRDT data byte count as an 18-bit field. This commit masks the value to the lower 18 bits to prevent incorrect transfer lengths and ensure compliance. Signed-off-by: Jeuk Kim (cherry picked from commit 289e6a3edf5041a9f96c3fb792845b94b5b3c666) Signed-off-by: Michael Tokarev diff --git a/hw/ufs/ufs.c b/hw/ufs/ufs.c index 0577747f46..58099a554e 100644 --- a/hw/ufs/ufs.c +++ b/hw/ufs/ufs.c @@ -224,7 +224,8 @@ static MemTxResult ufs_dma_read_prdt(UfsRequest *req) =20 for (uint16_t i =3D 0; i < prdt_len; ++i) { hwaddr data_dma_addr =3D le64_to_cpu(prd_entries[i].addr); - uint32_t data_byte_count =3D le32_to_cpu(prd_entries[i].size) + 1; + uint32_t data_byte_count =3D + (le32_to_cpu(prd_entries[i].size) & 0x3ffff) + 1; qemu_sglist_add(req->sg, data_dma_addr, data_byte_count); req->data_len +=3D data_byte_count; } --=20 2.47.3