From nobody Tue Apr 15 17:00:17 2025 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=1693328600; cv=none; d=zohomail.com; s=zohoarc; b=kDtFpdW/OMmoWypZh1erXRCh6uSeEI9W4bLyiMcvljBsw+Jh73JdmAmKJ6bsT2w0azzq/+ydM7ah2fHcamfCJrNZwbXwCs+JtWfhz+xqWC2CauoujQAOoOOyLYyReQMuI8EGLEmXG1/B4jQKn1YRjY3++mlz7jQEKOSenWcEslY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1693328600; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=LGuoxVvMU6aem7Q6XdFNRJrRZCWqnrvT0uINgJVeIFY=; b=BxBlR5WQhOSj1T3SfHzwGlA6/Py9zFwmz6Rdo95YUOlycnGODouf/2hqistxrIdBnjWPK8Hjfd7XMS6S6p+y2SNuj3aUGTrbjYdTdLmFBlFv/EkfwMnpPLwldqLLIosAML5i54Fsny5QtizfzGLga54u8WSqLF7SEMu0D5Rad9E= 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 169332860009811.014531392749063; Tue, 29 Aug 2023 10:03:20 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qb27J-0002Zb-8S; Tue, 29 Aug 2023 13:03:01 -0400 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 1qb278-0002Sx-2l for qemu-devel@nongnu.org; Tue, 29 Aug 2023 13:02:52 -0400 Received: from mail-pl1-x631.google.com ([2607:f8b0:4864:20::631]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qb272-00051N-I1 for qemu-devel@nongnu.org; Tue, 29 Aug 2023 13:02:46 -0400 Received: by mail-pl1-x631.google.com with SMTP id d9443c01a7336-1bdb7b0c8afso28366965ad.3 for ; Tue, 29 Aug 2023 10:02:43 -0700 (PDT) Received: from stoup.. ([71.212.131.115]) by smtp.gmail.com with ESMTPSA id cv2-20020a17090afd0200b00267b7c5d232sm10989645pjb.48.2023.08.29.10.02.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Aug 2023 10:02:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1693328562; x=1693933362; 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=LGuoxVvMU6aem7Q6XdFNRJrRZCWqnrvT0uINgJVeIFY=; b=AMPFPl5aZoJvEyneJbMUO5oOVau75/4U7nXf+Z/UTSTYLn8WOBXz0/VsmI3YgpO7Hl pc5OEO5uyFbbruIJS9kQqCbVaMG5dSDMywG0W8SwhPezivuO1TLH2LWpFEs+2kigs3XG ABNxwLSm3omtqiISEUCzh3BGzz+uwH+MGqtNungd0YXNA2ebc3U5UzRrfTtGpWReif0h fEkS8ZGa3QawjS3VrvtDSxveqsDUDN5jhy4+kaFxUcUcHxrRlZ7MlSPUVISAVMK7X2WV qOnZW5ReHaISNs1cZOHlM3dHvWhs7f7Nm7pToubd1J0I1lutZvfNa/O124CJ9N7bsx/L ZClw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693328562; x=1693933362; 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=LGuoxVvMU6aem7Q6XdFNRJrRZCWqnrvT0uINgJVeIFY=; b=dNve8gWv4I1MCdq47xu3MadWjerKMUCvQ8uURIL4lsYvBUaOGFIgS9Yr1mnZBW4jaF S23zpzPoeVldIi6oDVrnnaFD1pWRxvP5aUDVhZcC9cBdiRJtdHgU1r37gRUvDG3AbyFg aP3bYxoee4Mw4qGVXAAqoVA6G9z3KC8Hk62R+W0gfzt24oWQG+jDdT9wJm+PRlIwLRlS XQ20k2M+7Bz1ndL//Prw4QwXl7iSlEiRokQP16s+Sd4LMb6UtoYSA5k/2iK3+XGV8h+b kvefIAgL4gXNfQKuMn4YRqsbfIMHFHOnna0VZFLO2IeyN78g1eU3+nKHVA9ahJZUutDp Cjgg== X-Gm-Message-State: AOJu0YycSKHVq6mpbXsDgtL4Y2p94QblPFMgnJJYqaY1pN+ceIDSMkgH 9MvVdZyUHi7KLAjnoxehjOdJkDvbRsuxZNDGL1k= X-Google-Smtp-Source: AGHT+IFmJ5/siakb8z5t5YE+5c4tLI0ld1TH7dZziXNC56MKDMMxmuodqQgSKUjadzMTlhnPDatKlg== X-Received: by 2002:a17:90a:cb02:b0:25e:d727:6fb4 with SMTP id z2-20020a17090acb0200b0025ed7276fb4mr23520014pjt.2.1693328562484; Tue, 29 Aug 2023 10:02:42 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= Subject: [PULL 1/4] softmmu: Assert data in bounds in iotlb_to_section Date: Tue, 29 Aug 2023 10:02:37 -0700 Message-Id: <20230829170240.765996-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230829170240.765996-1-richard.henderson@linaro.org> References: <20230829170240.765996-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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::631; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x631.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: 1693328601245100003 Acked-by: Alex Benn=C3=A9e Suggested-by: Alex Benn=C3=A9e Signed-off-by: Richard Henderson --- softmmu/physmem.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/softmmu/physmem.c b/softmmu/physmem.c index 3df73542e1..7597dc1c39 100644 --- a/softmmu/physmem.c +++ b/softmmu/physmem.c @@ -2413,9 +2413,15 @@ MemoryRegionSection *iotlb_to_section(CPUState *cpu, int asidx =3D cpu_asidx_from_attrs(cpu, attrs); CPUAddressSpace *cpuas =3D &cpu->cpu_ases[asidx]; AddressSpaceDispatch *d =3D qatomic_rcu_read(&cpuas->memory_dispatch); - MemoryRegionSection *sections =3D d->map.sections; + int section_index =3D index & ~TARGET_PAGE_MASK; + MemoryRegionSection *ret; =20 - return §ions[index & ~TARGET_PAGE_MASK]; + assert(section_index < d->map.sections_nb); + ret =3D d->map.sections + section_index; + assert(ret->mr); + assert(ret->mr->ops); + + return ret; } =20 static void io_mem_init(void) --=20 2.34.1