From nobody Mon Nov 25 02:11:51 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=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1718718998; cv=none; d=zohomail.com; s=zohoarc; b=TjhcsaUh94XfFKdBGVPjD4vjhGsmsI0i0FOWnb9NdSujGGjc86KXVSvvbbsmDIiSd7hdDf7kCk+yZzrqJmPwOBpNgNnEAuSLSCt/KgoFOaF6eSqgdGnmXyDBG1TiCiGZ3zcvuxnCLjr82szaETZgEiW/TejzOO2O+u/1BvCO9T0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1718718998; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:Subject:Message-Id:Reply-To:To; bh=4CuWDGrXsYTHvxPtTrt3axmPm5v2kOqes49F3P7NwlU=; b=Tw/K2TP1T5yvQLfeFriXk0m+n9grWM6cc/rozAkaZqF87YTnv4qdyWpKAPRuRe3cP/eLtF5gJFhclWWIoTTeTIeeJdktRyzFCAVl57a9F5qcIptWnyBJ68lv6Z9S3mA4dy91RkDchkgnyZfLlQBmAypqSybPllSUd1zjHQ9T54o= 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 171871899831865.92534662704963; Tue, 18 Jun 2024 06:56:38 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sJZJq-0008HO-1Q; Tue, 18 Jun 2024 09:56:18 -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 1sJZJo-0008G8-Ja for qemu-devel@nongnu.org; Tue, 18 Jun 2024 09:56:16 -0400 Received: from mail-ed1-x534.google.com ([2a00:1450:4864:20::534]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sJZJm-000289-Ps for qemu-devel@nongnu.org; Tue, 18 Jun 2024 09:56:16 -0400 Received: by mail-ed1-x534.google.com with SMTP id 4fb4d7f45d1cf-57cb9efd8d1so3658669a12.0 for ; Tue, 18 Jun 2024 06:56:14 -0700 (PDT) Received: from wing.epfl.ch (dhcp-122-dist-b-021.epfl.ch. [128.178.122.21]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a6f5f8f6eb3sm567549366b.143.2024.06.18.06.56.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Jun 2024 06:56:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1718718973; x=1719323773; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=4CuWDGrXsYTHvxPtTrt3axmPm5v2kOqes49F3P7NwlU=; b=MfyGsODAz1YPq63fuylOdQOQF6odxfEqEXFLyxDZ9JHx0qP3yO1eRP3X4355yRuZDY yhpvB07BAXwpVh0H/DOfJ0077wVACeuoOvlYZltog6q6oYrIGnHgiq0+YQtuOzeUINBj AeWH4M554DzN/Bpx+T2mdW1F236Jhe6+sfKjyLqrhz3ufdcDIC/lEDLPqS/Wyhq5XPql jX1RMke9+NuWMmbQ1SPoNNDL39WmIECmbgya0dxAV/hD3goEVzTghmYQ0F7z1689Tzoi 0RlqIifjJk4tjC0+JW186xkFd8pi1Ow/Vd8lS1QVE7Q5nZ6YZ2T1UPSrxsoHJeZPecmP tGDQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718718973; x=1719323773; 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=4CuWDGrXsYTHvxPtTrt3axmPm5v2kOqes49F3P7NwlU=; b=uf13/OmrzGZMT3gBMttGO4pqTJcFtkNIX3liqKHTOHPhw45IvGB/J7TB68st3fY/af tb7h0vOy1xtZuPyKN8uD9RKDr9RFY1ccuAdybG8bfFtQZ7ikcu9MCy1t8eYMysL4xOpO pOxqqoWUWvpGO8520MbjK2AQK7ujy2jSYaLxuRgS6lPOM4KYUSJSnihZyAjSLIgqPfng YsblzJnSewj+uqbX1BrE57nlyPP26Ul27rW6mRKpCVZYTt78QF6JL1FUi+pRCg+qQYop DucPi3ld3j9NIWHu29cp7Ru4n4z9VFB0LJIYPdWXb/AQ2leuGXiW/Uw8nRMfZa2w5KJm EbzQ== X-Forwarded-Encrypted: i=1; AJvYcCUw7kF/CQQoUotwNYHO4wqz+M2M+tdPIEZXZ0Pe+S4c0jxxrTQWjL2DmS1SCKHepTfJO1vbVUaCQnH2XAUx9NAm3+L20lk= X-Gm-Message-State: AOJu0YzqdJGXTc4wFH8nwjyHEIxNgU9NHk9Hko5PaH/hd7hgiieYJp86 bru5YsXKCnwUdXcwAy0adVrQ9/OWjHRmrB3eXuXkSr+uzDk1poSepzzuvwbGGw== X-Google-Smtp-Source: AGHT+IG3pgC3Odl2w7lg8LrbUh0Wy9f0DOa8IZ+yh2dd8ZbxrefrcyxgUgW7nQJ5/lm6yp8/p79UyA== X-Received: by 2002:a17:906:684b:b0:a6f:8f48:5d29 with SMTP id a640c23a62f3a-a6f9506efbcmr165097966b.28.1718718972844; Tue, 18 Jun 2024 06:56:12 -0700 (PDT) From: Zheyu Ma To: Cc: Zheyu Ma , qemu-devel@nongnu.org Subject: [PATCH] hw/usb/hcd-dwc2: Handle invalid address access in read and write functions Date: Tue, 18 Jun 2024 15:56:10 +0200 Message-Id: <20240618135610.3109175-1-zheyuma97@gmail.com> 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=2a00:1450:4864:20::534; envelope-from=zheyuma97@gmail.com; helo=mail-ed1-x534.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 @gmail.com) X-ZM-MESSAGEID: 1718718999093100005 Content-Type: text/plain; charset="utf-8" This commit modifies the dwc2_hsotg_read() and dwc2_hsotg_write() functions to handle invalid address access gracefully. Instead of using g_assert_not_reached(), which causes the program to abort, the functions now log an error message and return a default value for reads or do nothing for writes. This change prevents the program from aborting and provides clear log messages indicating when an invalid memory address is accessed. Reproducer: cat << EOF | qemu-system-aarch64 -display none \ -machine accel=3Dqtest, -m 512M -machine raspi2b -m 1G -nodefaults \ -usb -drive file=3Dnull-co://,if=3Dnone,format=3Draw,id=3Ddisk0 -device \ usb-storage,port=3D1,drive=3Ddisk0 -qtest stdio readl 0x3f980dfb EOF Signed-off-by: Zheyu Ma Reviewed-by: Paul Zimmerman --- hw/usb/hcd-dwc2.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/hw/usb/hcd-dwc2.c b/hw/usb/hcd-dwc2.c index 8cac9c0a06..b4f0652c7d 100644 --- a/hw/usb/hcd-dwc2.c +++ b/hw/usb/hcd-dwc2.c @@ -1128,7 +1128,10 @@ static uint64_t dwc2_hsotg_read(void *ptr, hwaddr ad= dr, unsigned size) val =3D dwc2_pcgreg_read(ptr, addr, (addr - HSOTG_REG(0xe00)) >> 2= , size); break; default: - g_assert_not_reached(); + qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%"HWADDR_PRIx"\n", + __func__, addr); + val =3D 0; + break; } =20 return val; @@ -1160,7 +1163,9 @@ static void dwc2_hsotg_write(void *ptr, hwaddr addr, = uint64_t val, dwc2_pcgreg_write(ptr, addr, (addr - HSOTG_REG(0xe00)) >> 2, val, = size); break; default: - g_assert_not_reached(); + qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%"HWADDR_PRIx"\n", + __func__, addr); + break; } } =20 --=20 2.34.1