From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C1838C49ED7 for ; Fri, 13 Sep 2019 15:04:40 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 99A8720830 for ; Fri, 13 Sep 2019 15:04:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="RY+uHLoE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 99A8720830 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=kxBSZ0RQmZq1SXr/2SnEAjzHV3HNtM/3osiRgbd/LQI=; b=RY+uHLoELGoHTU aAZq6tNG1O3mR+R645XWLvwgleVXA7zgBF4nKTGTx2tK/EufiLV4V3qH8hXiv7qeeFhdL9jnq8+L5 FeOV5vEewYgWM8Q8OOEpZp/Kvq9mfSFq9WcI8Lr8zIcF9IPCLCNGVsvtFsXsyyyGyFBA04VCM7hgl 6wnHxKzkfT8e4LUdHYkC2lvTvZcdoEnw2cxH/00KvPFPNkFaZyQtfG3NJv6RrOyovs22qjpkBsWJJ 1+Mk78fVhOvpQ5pkC5JsVm2iXjztaxlgZx71pRNJxI3SWvxwABubM8RcbfwkyuSHW3/t2DWBFQmP0 82i0DYrnpvYmefh2h2zQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1i8n7V-0006oO-OO; Fri, 13 Sep 2019 15:04:21 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.92.2 #3 (Red Hat Linux)) id 1i8n4i-0006Kj-Gh for linux-amlogic@lists.infradead.org; Fri, 13 Sep 2019 15:01:30 +0000 Received: from mail-wr1-f71.google.com (mail-wr1-f71.google.com [209.85.221.71]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 17BE76907A for ; Fri, 13 Sep 2019 15:01:28 +0000 (UTC) Received: by mail-wr1-f71.google.com with SMTP id f11so13756309wrt.18 for ; Fri, 13 Sep 2019 08:01:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:openpgp:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=zuzwEhDdM8nFD/eqeUMdkZbahAvWuck1YuH/cdNiv9o=; b=reX/DKi4srCwEluV6FTMao6ytW1UopJbNB911JK+LhhjM/Ll38czpsMP8EFd16ncNN e3ovydH28M+VmAjWWxN2l7/TsvkqfUmdcydFMAHGfrRaLkrH4ZoiM3hDhDm7FR4b26MP iCulPiKc+JRDCSB4mJuduEu83LJhcdpr4RHGHZxAOdrPX/7mlTXNWAZv8tz86SpEeLzl LYXPOPt6kMs1rnP/LNfDCWm9koE+NHjRDxLIpZYncc/EHiY+PzXoLrtgoyb7DB6Xd2Ux l3t3cs/n7Cf3hOOIHQqBmyQJQqHEu2gF6y6zSoQs3Kh+Vabby8A2Pkn9kqf8QL/qPaRe LmHw== X-Gm-Message-State: APjAAAUyQVEikLRC+XFVq8bR9ORzm8D0QKBKl8+qOo76uaOnyBX6VFfB AW+S4IBK2iM195W1pZuamG4w/u1Zytp2GrhbirgdbMZY3LgZKNWGBqtcXZ35uROz04H1WzhZSM2 TPyrmvxdiMbnWTPzTP7vpILqd9Ll08YI= X-Received: by 2002:a1c:c013:: with SMTP id q19mr3447786wmf.87.1568386884925; Fri, 13 Sep 2019 08:01:24 -0700 (PDT) X-Google-Smtp-Source: APXvYqxVmkhicWbX9sM2V6LPnr+xLUUrZU9HvAJMzAOfyJJVoRtNarvooFR4sjG8yibYs2ccdb68wg== X-Received: by 2002:a1c:c013:: with SMTP id q19mr3447762wmf.87.1568386884662; Fri, 13 Sep 2019 08:01:24 -0700 (PDT) Received: from ?IPv6:2001:b07:6468:f312:c5d2:4bb2:a923:3a9a? ([2001:b07:6468:f312:c5d2:4bb2:a923:3a9a]) by smtp.gmail.com with ESMTPSA id y15sm1949532wmj.32.2019.09.13.08.01.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 13 Sep 2019 08:01:24 -0700 (PDT) Subject: Re: KASAN: slab-out-of-bounds Read in handle_vmptrld To: Greg Kroah-Hartman References: <000000000000a9d4f705924cff7a@google.com> <87lfutei1j.fsf@vitty.brq.redhat.com> <5218e70e-8a80-7c5f-277b-01d9ab70692a@redhat.com> <20190913044614.GA120223@kroah.com> <20190913130226.GB403359@kroah.com> From: Paolo Bonzini Openpgp: preference=signencrypt Message-ID: <6a0ec3a2-2a52-f67a-6140-e0a60874538a@redhat.com> Date: Fri, 13 Sep 2019 17:01:22 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190913130226.GB403359@kroah.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190913_080129_010091_9331ACE8 X-CRM114-Status: GOOD ( 14.19 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, x86@kernel.org, wanpengli@tencent.com, kvm@vger.kernel.org, narmstrong@baylibre.com, catalin.marinas@arm.com, will.deacon@arm.com, hpa@zytor.com, khilman@baylibre.com, joro@8bytes.org, rkrcmar@redhat.com, mingo@redhat.com, Dmitry Vyukov , syzbot , devicetree@vger.kernel.org, syzkaller-bugs@googlegroups.com, robh+dt@kernel.org, bp@alien8.de, linux-amlogic@lists.infradead.org, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org, jmattson@google.com, USB list , linux-kernel@vger.kernel.org, sean.j.christopherson@intel.com, carlo@caione.org, Vitaly Kuznetsov Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org On 13/09/19 15:02, Greg Kroah-Hartman wrote: > Look at linux-next, we "should" have fixed up hcd_buffer_alloc() now to > not need this type of thing. If we got it wrong, please let us know and > then yes, a fix like this would be most appreciated :) I still see /* some USB hosts just use PIO */ if (!hcd_uses_dma(hcd)) { *dma = ~(dma_addr_t) 0; return kmalloc(size, mem_flags); } in linux-next's hcd_buffer_alloc and also in usb.git's usb-next branch. I also see the same if (remap_pfn_range(vma, vma->vm_start, virt_to_phys(usbm->mem) >> PAGE_SHIFT, size, vma->vm_page_prot) < 0) { ... } in usbdev_mmap. Of course it's possible that I'm looking at the wrong branch, or just being dense. Paolo _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic