From nobody Mon Apr 29 08:15:36 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; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1669880771; cv=none; d=zohomail.com; s=zohoarc; b=NHn8DIJUvH8L2W1yRcp7asz9Up/FXHNlo9npaDBMtPjEyp4pYnxfo5Px0WBFG/zEzK3lMUrtCnf9CuM2ZFbrIlin5nL9NQjhnr2j9X/WhXG8IthNokuwTfFrTlDeDj5197LWIiIyBRrC1UU5yrNMduZxXsdZbCllkhEGC95pqAc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1669880771; h=Content-Transfer-Encoding:Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:To; bh=wPfTsXByzqqpErQP2kZxiMdnz9aCgi9SsKK4inODxFo=; b=S4KVTEQLuZry8oipTKxKFtezrRD0R87hiOFqqDsTeY5zlSLOn/IxkDjX+nxt+qboIlBzlXx6VXvaUwwuVlHL0wmhh5hXzUVbHBUefCVDsjuLzsCmn4mSm/Jkn70pE2Zoslg81oE2hyobUsvHDlu7l3einy5HxWaE9Xrfrg8xzPg= 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; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1669880771038928.4365516751964; Wed, 30 Nov 2022 23:46:11 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1p0eGV-0004kE-G9; Thu, 01 Dec 2022 02:45:51 -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 1p0eG6-0004bf-Ms for qemu-devel@nongnu.org; Thu, 01 Dec 2022 02:45:36 -0500 Received: from mail-pl1-x62c.google.com ([2607:f8b0:4864:20::62c]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1p0eG4-00065y-TU for qemu-devel@nongnu.org; Thu, 01 Dec 2022 02:45:26 -0500 Received: by mail-pl1-x62c.google.com with SMTP id y17so882741plp.3 for ; Wed, 30 Nov 2022 23:45:24 -0800 (PST) Received: from stoup.. ([2602:47:d48a:1201:7dfe:6c55:976b:754]) by smtp.gmail.com with ESMTPSA id f2-20020a170902ff0200b0018975488514sm2831451plj.126.2022.11.30.23.45.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Nov 2022 23:45:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=wPfTsXByzqqpErQP2kZxiMdnz9aCgi9SsKK4inODxFo=; b=VyttmRNybxL3xLd1RzwhyCCtd4vnEi4bUoCj/anf8mkU49O7k3AzLU+TtU1/mQjpKP 2+YUQUXztjBhsau2VoghnnnV/00fVbDS30arPzH9yP6IdN8zuPMeZKp5Q3pUiKmdde+L NhU9m/BbnG5zsuLmkO3jr8m6asbjGHJL05hkbE2EaUMsJjDkxAIwMiiXi+dexRAVvIID tdF5c2rDkwTiMLVOkLCamGYPDORECnuDwnjd5qPzX71ZJRYen0rd9H+q2f3eHNMZC4Xl Y5xT944SfWuasK+wkz9HQKsy5INKbCxle0uJRck6QqBpWIDpM/GO3f7qb7CETRHa6jLe U61A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=wPfTsXByzqqpErQP2kZxiMdnz9aCgi9SsKK4inODxFo=; b=Pu+xY302JDw0GrDAshUqKsceFlQ1iiuY5QsSWKf7pnUqaBaOLg+wFrtzSoWq1U4Doh SO0ivBKJqmD6E/fiPM8BAu0QcVRZxUeGOhvmHNbEnMAbBUsiGxZEgeI9Pe4gkgAUtfwE gIjQt3zPDYV8JLuEtDM/rw6dh5PHcruyhfee2/JnAz++hpYsNJ2KlYzGwZY1aV/2asiz mBbiZqKTv/WaR5zQSKYWilPf+5oT91Ia2NGjrtRbY21FOfox/s83MrtYIGOumCyCNb74 p081zkzAEU1sSS54oTfZVpj+7nQwJ291zZ8v1YNcKOnYHOWDZVKhTY7dS/TjcEXAu/X6 rvSQ== X-Gm-Message-State: ANoB5pl/RM1mfUUAi5WgGTPRjuV71T2RzSNCJebBESUk63+aboMB3G7x bqXYi8lKhaQLQUUnf/5J4BG417xxf5BMlA== X-Google-Smtp-Source: AA0mqf6BN8ctQvHwGLZG8U03xeYtB6xP6MOCPLV9zAH7k0dkcknI0aczOaTHP5zcmh0KD9yvDGgM4g== X-Received: by 2002:a17:902:8bc4:b0:187:2790:9bc2 with SMTP id r4-20020a1709028bc400b0018727909bc2mr48873529plo.61.1669880723502; Wed, 30 Nov 2022 23:45:23 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: pbonzini@redhat.com, eduardo@habkost.net, Daniel Hoffman Subject: [PATCH for-7.2] target/i386: Always completely initialize TranslateFault Date: Wed, 30 Nov 2022 23:45:22 -0800 Message-Id: <20221201074522.178498-1-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 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::62c; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62c.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=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: 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 @linaro.org) X-ZM-MESSAGEID: 1669880771776100001 Content-Type: text/plain; charset="utf-8" In get_physical_address, the canonical address check failed to set TranslateFault.stage2, which resulted in an uninitialized read from the struct when reporting the fault in x86_cpu_tlb_fill. Adjust all error paths to use structure assignment so that the entire struct is always initialized. Reported-by: Daniel Hoffman Fixes: 9bbcf372193a ("target/i386: Reorg GET_HPHYS") Signed-off-by: Richard Henderson --- target/i386/tcg/sysemu/excp_helper.c | 34 ++++++++++++++++------------ 1 file changed, 19 insertions(+), 15 deletions(-) diff --git a/target/i386/tcg/sysemu/excp_helper.c b/target/i386/tcg/sysemu/= excp_helper.c index 405a5d414a..55bd1194d3 100644 --- a/target/i386/tcg/sysemu/excp_helper.c +++ b/target/i386/tcg/sysemu/excp_helper.c @@ -71,10 +71,11 @@ static bool ptw_translate(PTETranslate *inout, hwaddr a= ddr) TranslateFault *err =3D inout->err; =20 assert(inout->ptw_idx =3D=3D MMU_NESTED_IDX); - err->exception_index =3D 0; /* unused */ - err->error_code =3D inout->env->error_code; - err->cr2 =3D addr; - err->stage2 =3D S2_GPT; + *err =3D (TranslateFault){ + .error_code =3D inout->env->error_code, + .cr2 =3D addr, + .stage2 =3D S2_GPT, + }; return false; } return true; @@ -431,10 +432,11 @@ do_check_protect_pse36: MMU_NESTED_IDX, true, &pte_trans.haddr, &full, 0); if (unlikely(flags & TLB_INVALID_MASK)) { - err->exception_index =3D 0; /* unused */ - err->error_code =3D env->error_code; - err->cr2 =3D paddr; - err->stage2 =3D S2_GPA; + *err =3D (TranslateFault){ + .error_code =3D env->error_code, + .cr2 =3D paddr, + .stage2 =3D S2_GPA, + }; return false; } =20 @@ -494,10 +496,11 @@ do_check_protect_pse36: } break; } - err->exception_index =3D EXCP0E_PAGE; - err->error_code =3D error_code; - err->cr2 =3D addr; - err->stage2 =3D S2_NONE; + *err =3D (TranslateFault){ + .exception_index =3D EXCP0E_PAGE, + .error_code =3D error_code, + .cr2 =3D addr, + }; return false; } =20 @@ -564,9 +567,10 @@ static bool get_physical_address(CPUX86State *env, vad= dr addr, int shift =3D in.pg_mode & PG_MODE_LA57 ? 56 : 47; int64_t sext =3D (int64_t)addr >> shift; if (sext !=3D 0 && sext !=3D -1) { - err->exception_index =3D EXCP0D_GPF; - err->error_code =3D 0; - err->cr2 =3D addr; + *err =3D (TranslateFault){ + .exception_index =3D EXCP0D_GPF, + .cr2 =3D addr, + }; return false; } } --=20 2.34.1