From nobody Sat Nov 23 21:05:36 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; 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 ARC-Seal: i=1; a=rsa-sha256; t=1730724034; cv=none; d=zohomail.com; s=zohoarc; b=MZl9uLxl+aAxBLHOu/bePoBBRuQnhMotJNmPbW+eJMd+xBuj9f/vkCCGqJeoD0GJCmZhHft0FkrcUBfp4tKhIiqTZ8OwqE8oGs6R9MjEfd3ag2KuikpeTcgRp+L9wKENALm8kDEZQd289WXWA/PugcvVJJRh7NGkVOvewN2NDPU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1730724034; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=98jwi9p0o8fOmk8UPM/sqRh+geOrtT788L2sLhtj3/o=; b=kK+Jw84oq36elAZmtP6v5/WjIizo3pDw/5/wYnmIFdJTzJkeJfFFuUfjlw/GBlqRBWY/Wt/AlqaoHbxDg1cyQwFCBpt3bcMxqdP4AQuxF9ks4pT1ThBYnHvxysGkiPalKbspmkXdau+xNM/5rzc8NuRDvSOnhGo/ENbdv2GVC28= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; 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 1730724034577168.0908931001934; Mon, 4 Nov 2024 04:40:34 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1t7wMu-00060P-D2; Mon, 04 Nov 2024 07:39:40 -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 1t7wMA-0005uX-B6 for qemu-devel@nongnu.org; Mon, 04 Nov 2024 07:38:54 -0500 Received: from mail-pg1-x52d.google.com ([2607:f8b0:4864:20::52d]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1t7wM7-0001oe-T1 for qemu-devel@nongnu.org; Mon, 04 Nov 2024 07:38:53 -0500 Received: by mail-pg1-x52d.google.com with SMTP id 41be03b00d2f7-7d4f85766f0so3141914a12.2 for ; Mon, 04 Nov 2024 04:38:50 -0800 (PST) Received: from grind.. ([152.234.121.56]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-720bc20e4c2sm7550953b3a.91.2024.11.04.04.38.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Nov 2024 04:38:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1730723929; x=1731328729; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=98jwi9p0o8fOmk8UPM/sqRh+geOrtT788L2sLhtj3/o=; b=G5JIHuikYGh0vMLkut5DV3dGmGYpr01oEteH5elZ6nexl6/zy/eamzrKykjZ7s3nqz vdeNXOLmu+FqN55h/++r/+8ngDj23xuAlmT92ZdfLeLOdzFrpHmzHpr2o7stE3xoYLJq j05U5sKdY2uS/1ojnm9qY1XTjFbf5xdBgdg1CL1kKM3x0qaS2x3XoZkYh4u+CJRE4uVd MVjO+X88wg68j6oc14MaIXMX53t7VOea+o1K1TrJomgtXwml7Q/YDMIvsGQYbj4AowVe ktBSBw/74S/e9jirselnVqZg/X6E2MA4ScKj9iRMyosRPWaiCJTl3NYAIowMX/jVUhuv P+9w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730723929; x=1731328729; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=98jwi9p0o8fOmk8UPM/sqRh+geOrtT788L2sLhtj3/o=; b=YjDMaDo+cCZRVmymTSQUwW1B19PsiUqF9G37UBD5Wcu22HI3YYbNEUy5BNVj0iId6W pHPqa0X7jzBpPRr/RxBFDqHrd0hEu5i3PXCNihHWbmWupZzXj6fKtvkHPXCo6i375VGS HAJ4ll3kS1PUSQ5eaoFT3rVbMrr5HScVZdj4FOsB+XlPRSANmwdRY1XDe0YDCzIXs9Ko zCa+g+PUnUX9QPt7rJjR7aCtxspZ0gZBA1MaQ1QJ8IzPF3cX+aRvxSvPlD2zZbxZjRYQ aAtIgrvw2yzF70c5KXGa6iT0TEWk3qp4c01Jh+AmA/u0RUBuyLBsv5wtGhXx78mLD2Q9 4uUg== X-Gm-Message-State: AOJu0YyoExoZuWwqRUK9b9cvBP3Ae8jFLUMzWw6ejHoVxpOUbCK0E7J1 cHppH8p8igXOPUm93FvfuYXTeMiQccddH3cuCQL/IOuwW/61bHHCt2OPxC+jDHIWDQ99qzFnUqn W X-Google-Smtp-Source: AGHT+IFKu7hqEN439YF4lNoCIO/jofqVEb5OHNN68TMEEivr50e8YKHlJgQl8U1e8nNiVEl2M4OeVw== X-Received: by 2002:a05:6a20:7483:b0:1db:e5ac:3d5b with SMTP id adf61e73a8af0-1dbe5ac3d81mr1616634637.39.1730723928668; Mon, 04 Nov 2024 04:38:48 -0800 (PST) From: Daniel Henrique Barboza To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, alistair.francis@wdc.com, bmeng@tinylab.org, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, palmer@rivosinc.com, peter.maydell@linaro.org, Daniel Henrique Barboza Subject: [PATCH 1/2] hw/riscv/riscv-iommu: change 'depth' to int Date: Mon, 4 Nov 2024 09:38:38 -0300 Message-ID: <20241104123839.533442-2-dbarboza@ventanamicro.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241104123839.533442-1-dbarboza@ventanamicro.com> References: <20241104123839.533442-1-dbarboza@ventanamicro.com> 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=2607:f8b0:4864:20::52d; envelope-from=dbarboza@ventanamicro.com; helo=mail-pg1-x52d.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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-ZohoMail-DKIM: pass (identity @ventanamicro.com) X-ZM-MESSAGEID: 1730724035177116600 Content-Type: text/plain; charset="utf-8" Coverity reports an unsigned overflow when doing: for (; depth-- > 0; ) { When depth =3D 0 inside riscv_iommu_ctx_fetch(). Building it with a recent GCC the code doesn't actually break with depth =3D 0, i.e. the comparison "0-- > 0" will exit the loop instead of proceeding, but 'depth' will retain the overflow value afterwards. This behavior can be compiler dependent, so change 'depth' to int to remove this potential ambiguity. Resolves: Coverity CID 1564783 Fixes: 0c54acb8243 ("hw/riscv: add RISC-V IOMMU base emulation") Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis --- hw/riscv/riscv-iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/riscv/riscv-iommu.c b/hw/riscv/riscv-iommu.c index feb650549a..05341ad20b 100644 --- a/hw/riscv/riscv-iommu.c +++ b/hw/riscv/riscv-iommu.c @@ -846,7 +846,7 @@ static int riscv_iommu_ctx_fetch(RISCVIOMMUState *s, RI= SCVIOMMUContext *ctx) /* Device Context format: 0: extended (64 bytes) | 1: base (32 bytes) = */ const int dc_fmt =3D !s->enable_msi; const size_t dc_len =3D sizeof(dc) >> dc_fmt; - unsigned depth; + int depth; uint64_t de; =20 switch (mode) { --=20 2.45.2 From nobody Sat Nov 23 21:05:36 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; 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 ARC-Seal: i=1; a=rsa-sha256; t=1730724043; cv=none; d=zohomail.com; s=zohoarc; b=nS2lDNFveg2JfcglnZ71igsdawBUZ/srkv4SPJ0XLlmXUrmvaRztYVfuq/t/4BalN7xHKS3b09sw1ducfsQ73CiAZYwJb7gSwUesuFCxYWSn+xTRZa09sow4mIzPvYpm8OtZ3Xdwv0AddkG0e6nJt8GbCVgl8ttIAo9Mwf8xcJo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1730724043; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=70cONpo0NezeXcq+dlKRTJsBJYOs96bE4Mezx2X1ROw=; b=jdjRaRKiwLPl7rNl1mo7UGXi0v/MPXkA79e/4AwKDlpr5RvMCoZT9ZqNRC1jVuxaGZw4Bh9T36iB4Y1ajTS4EJP9ONWVETdqTTxDfCwLUcMg32HH1ij1iL9X7dHXZH5aa1gCLup1BQwFHszBEIlVNzc40hi5LLtJwcw7OX2mC9c= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; 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 1730724043642584.6379457235282; Mon, 4 Nov 2024 04:40:43 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1t7wMu-000613-SZ; Mon, 04 Nov 2024 07:39:40 -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 1t7wMB-0005uf-KG for qemu-devel@nongnu.org; Mon, 04 Nov 2024 07:38:57 -0500 Received: from mail-pf1-x431.google.com ([2607:f8b0:4864:20::431]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1t7wMA-0001pD-2G for qemu-devel@nongnu.org; Mon, 04 Nov 2024 07:38:55 -0500 Received: by mail-pf1-x431.google.com with SMTP id d2e1a72fcca58-71e681bc315so2880956b3a.0 for ; Mon, 04 Nov 2024 04:38:53 -0800 (PST) Received: from grind.. ([152.234.121.56]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-720bc20e4c2sm7550953b3a.91.2024.11.04.04.38.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Nov 2024 04:38:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1730723932; x=1731328732; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=70cONpo0NezeXcq+dlKRTJsBJYOs96bE4Mezx2X1ROw=; b=OSXoxVwzVLkIano/iGW9+ZczG/TZupY1bU6WbuQImspfrDaWKoPeDoV3QNT5KV3Ito HETLeyWaadUuq0+V9/yb0tBnUAjJlW0pygLPhHDUDNp9cevqZ79LgokCZ4yuZPBK3/8N MMWdWmU4R6CKV2FJpOD51GqdMmHEQ0GVzIp6IBDYllTLdaK/pHUtcXhWjKaZCfYxUdQ7 0NiXdUx5FB6SkSZmAJHu9IcfDkhordopLaxxzwljiUlteIBIamivMdRDLVXU/HoN6n+C daly05z956uGVRoTZgAC9Jxb80B8HuY7JSbYFuUT6KX0z/TGRAcWQ2JabjybSKA1wjco ReGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730723932; x=1731328732; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=70cONpo0NezeXcq+dlKRTJsBJYOs96bE4Mezx2X1ROw=; b=PLr0YBODXQJMaapbPyOEILb35cMjdZRC5VVVstGWORg4g0MyKLzDS/HT2uBUDQdh7X osgfHd+nuFjYeqfwxss8Q5EZK+5Jb4cJ/tnSK+EZTjx39vIYkbPl6RRMVxbWBMKFlbof xBQlNPtBHavLrdbff5ms/R8Wl9woJtvnyJB9U0k91Euo4y9WVOuXUsC7KpujzQKfD6+r oOKS2M5s9TlVMWIkRf5amk+emkORKuGGMjVV4M8MVX+vQXQjQRq+Vuo8Sw4y9kwPR78u AU4UJRLv36XSUvZPjUJPEodPx+sBpowrTIUcQkp9JQC9M09Fpvr5aP082j93+VJLt8XA rf+Q== X-Gm-Message-State: AOJu0YwMYts2p/5TKrsks3rcTnTOkdjdfM0IH40QQRFXqN4KGm3F1byh 0nScOPrLwnBdtzTiJ2/8e1KW4ovKHa8I/k4K7hzA7D/OaxxH6Lm5i4k7DdsB0iZW9ryI9LMOncy R X-Google-Smtp-Source: AGHT+IGozwgJnhDKho1YVPQZxf9TGFbk8HtGPwVUSw/K/4/3ViGU/S/oAmWDB9Ue1TR3mzL2mCYy3w== X-Received: by 2002:a05:6a00:2e0f:b0:71e:6a57:7288 with SMTP id d2e1a72fcca58-720bcb1ae5fmr22545739b3a.5.1730723931985; Mon, 04 Nov 2024 04:38:51 -0800 (PST) From: Daniel Henrique Barboza To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, alistair.francis@wdc.com, bmeng@tinylab.org, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, palmer@rivosinc.com, peter.maydell@linaro.org, Daniel Henrique Barboza Subject: [PATCH 2/2] hw/riscv/riscv-iommu: fix riscv_iommu_validate_process_ctx() check Date: Mon, 4 Nov 2024 09:38:39 -0300 Message-ID: <20241104123839.533442-3-dbarboza@ventanamicro.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241104123839.533442-1-dbarboza@ventanamicro.com> References: <20241104123839.533442-1-dbarboza@ventanamicro.com> 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=2607:f8b0:4864:20::431; envelope-from=dbarboza@ventanamicro.com; helo=mail-pf1-x431.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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-ZohoMail-DKIM: pass (identity @ventanamicro.com) X-ZM-MESSAGEID: 1730724045074116600 Content-Type: text/plain; charset="utf-8" 'mode' will never be RISCV_IOMMU_CAP_SV32. We are erroring out in the 'switch' right before it if 'mode' isn't 0, 8, 9 or 10. 'mode' should be check with RISCV_IOMMU_DC_FSC_IOSATP_MODE_SV32. Reported by Coverity via a "DEADCODE" ticket. Resolves: Coverity CID 1564781 Fixes: 0c54acb8243 ("hw/riscv: add RISC-V IOMMU base emulation") Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis --- hw/riscv/riscv-iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/riscv/riscv-iommu.c b/hw/riscv/riscv-iommu.c index 05341ad20b..dd102b3c70 100644 --- a/hw/riscv/riscv-iommu.c +++ b/hw/riscv/riscv-iommu.c @@ -803,7 +803,7 @@ static bool riscv_iommu_validate_process_ctx(RISCVIOMMU= State *s, } =20 if (ctx->tc & RISCV_IOMMU_DC_TC_SXL) { - if (mode =3D=3D RISCV_IOMMU_CAP_SV32 && + if (mode =3D=3D RISCV_IOMMU_DC_FSC_IOSATP_MODE_SV32 && !(s->cap & RISCV_IOMMU_CAP_SV32)) { return false; } --=20 2.45.2