From nobody Mon Feb 9 08:29:49 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) client-ip=66.175.222.108; envelope-from=bounce+27952+109456+1787277+3901457@groups.io; helo=mail02.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+109456+1787277+3901457@groups.io ARC-Seal: i=1; a=rsa-sha256; t=1696850920; cv=none; d=zohomail.com; s=zohoarc; b=j+ZCMX13goBN0zsLCKVd6wd+6DzPT2w96SSZVGgm/oJfPW+7CzBH6JnnsWEsBJhXgsmyx4U7/8GyPxbRbgpvhBhU12x/MjW3Wvzg9kT7AmLPHgXWgbGkyPmMzCvC3b9tX8o12PoSzj6C8o7lQVq1rAtDNpg2B/vny+RpIpTHqPY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1696850920; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=hBftIdhVWjNXJqpppU+FRlV54OYCZH20iS1g67R9rHg=; b=TO7fdUDu0hZdpaMk81u6W0SkN7UPZfqjsf3DqV8zZr3q6zISD9fE5Wjce66e9ls7pb8ePMyQ31LBGUy90yedANSaopM2GXm3nvYMtCb0Zejftr0zkdv62kRmsU9dYSAX1dd1XFpa3P/bok2RrfdBHKzVDVHtm/j0tSUD4bziXZ8= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+109456+1787277+3901457@groups.io Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by mx.zohomail.com with SMTPS id 1696850920744371.6368216372881; Mon, 9 Oct 2023 04:28:40 -0700 (PDT) Return-Path: DKIM-Signature: a=rsa-sha256; bh=IZESxlKlrJ5xiyhbzV47EJQFQ8hc+zSh7s8TJ8GDJfQ=; c=relaxed/simple; d=groups.io; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References:MIME-Version:Precedence:List-Subscribe:List-Help:Sender:List-Id:Mailing-List:Delivered-To:Reply-To:List-Unsubscribe-Post:List-Unsubscribe:Content-Transfer-Encoding; s=20140610; t=1696850920; v=1; b=alkWP3lbLqHmAn8MQISQzXTb9i/G/gW3sQY3+gMvbn2iK+nabjPrjINdD8N7u1gza986icGT mVMqJfDKgGdbKcD+GoA2QOVzWqSA22/7prPu1DtMtmV8QSO/op4AWgyKr55ezAggZ2oviT139bo MCs+EeJJAFR/SQnjDYvMaM6Y= X-Received: by 127.0.0.2 with SMTP id Ql9GYY1788612xvcLpoTVglD; Mon, 09 Oct 2023 04:28:40 -0700 X-Received: from mail-pf1-f174.google.com (mail-pf1-f174.google.com [209.85.210.174]) by mx.groups.io with SMTP id smtpd.web11.58776.1696850919804220408 for ; Mon, 09 Oct 2023 04:28:39 -0700 X-Received: by mail-pf1-f174.google.com with SMTP id d2e1a72fcca58-690fa0eea3cso3965091b3a.0 for ; Mon, 09 Oct 2023 04:28:39 -0700 (PDT) X-Gm-Message-State: qw24fnFG1Y23eI3JnHORIxjbx1787277AA= X-Google-Smtp-Source: AGHT+IGKXfWz5UKyDrbSkxg2XtmFCETC7TRFiboAoGUy+h4Ci+kff+bX/5q9OUdoCoWI+TBqkrXcMA== X-Received: by 2002:a17:90b:11cc:b0:277:6d6a:33ba with SMTP id gv12-20020a17090b11cc00b002776d6a33bamr14574046pjb.28.1696850919213; Mon, 09 Oct 2023 04:28:39 -0700 (PDT) X-Received: from user-Latitude-5420.dc1.ventanamicro.com ([2401:4900:1cbd:fb:a57a:2893:69ae:bff3]) by smtp.gmail.com with ESMTPSA id m20-20020a17090a7f9400b00262ca945cecsm9993713pjl.54.2023.10.09.04.28.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Oct 2023 04:28:39 -0700 (PDT) From: "Ranbir Singh" To: devel@edk2.groups.io, rsingh@ventanamicro.com Cc: Hao A Wu , Ray Ni , Veeresh Sangolli Subject: [edk2-devel] [PATCH v2 1/2] MdeModulePkg/Bus/Usb/UsbMouseDxe: Fix REVERSE_INULL Coverity issue Date: Mon, 9 Oct 2023 16:58:31 +0530 Message-Id: <20231009112832.225861-2-rsingh@ventanamicro.com> In-Reply-To: <20231009112832.225861-1-rsingh@ventanamicro.com> References: <20231009112832.225861-1-rsingh@ventanamicro.com> MIME-Version: 1.0 Precedence: Bulk List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,rsingh@ventanamicro.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1696850922354100005 Content-Type: text/plain; charset="utf-8" From: Ranbir Singh The function USBMouseDriverBindingStart do have ASSERT (UsbMouseDevice !=3D NULL); after AllocateZeroPool, but it is applicable only in DEBUG mode. In RELEASE mode, if for whatever reasons UsbMouseDevice is NULL at this point, the code proceeds to dereference "UsbMouseDevice" afterwards which will lead to CRASH. Hence, for safety add NULL pointer checks always. REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3D4222 Cc: Hao A Wu Cc: Ray Ni Co-authored-by: Veeresh Sangolli Signed-off-by: Ranbir Singh Signed-off-by: Ranbir Singh Reviewed-by: Laszlo Ersek --- MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.c b/MdeModulePkg/Bus= /Usb/UsbMouseDxe/UsbMouse.c index 451d4b934f4c..621d09713b24 100644 --- a/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.c +++ b/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.c @@ -161,6 +161,10 @@ USBMouseDriverBindingStart ( =20 UsbMouseDevice =3D AllocateZeroPool (sizeof (USB_MOUSE_DEV)); ASSERT (UsbMouseDevice !=3D NULL); + if (UsbMouseDevice =3D=3D NULL) { + Status =3D EFI_OUT_OF_RESOURCES; + goto ErrorExit; + } =20 UsbMouseDevice->UsbIo =3D UsbIo; UsbMouseDevice->Signature =3D USB_MOUSE_DEV_SIGNATURE; --=20 2.34.1 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. 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