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=-3.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 6B0A6C2D0A8 for ; Mon, 28 Sep 2020 10:22:57 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C5CA221531 for ; Mon, 28 Sep 2020 10:22:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b="lAblRJI0" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C5CA221531 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=zx2c4.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id EB4DA6B005D; Mon, 28 Sep 2020 06:22:55 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E639D6B0062; Mon, 28 Sep 2020 06:22:55 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D9F636B0068; Mon, 28 Sep 2020 06:22:55 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0109.hostedemail.com [216.40.44.109]) by kanga.kvack.org (Postfix) with ESMTP id C390E6B005D for ; Mon, 28 Sep 2020 06:22:55 -0400 (EDT) Received: from smtpin14.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 7713E824999B for ; Mon, 28 Sep 2020 10:22:55 +0000 (UTC) X-FDA: 77312081910.14.bite68_0c05ad427180 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin14.hostedemail.com (Postfix) with ESMTP id 5829118229818 for ; Mon, 28 Sep 2020 10:22:55 +0000 (UTC) X-HE-Tag: bite68_0c05ad427180 X-Filterd-Recvd-Size: 2832 Received: from mail.zx2c4.com (mail.zx2c4.com [192.95.5.64]) by imf06.hostedemail.com (Postfix) with ESMTP for ; Mon, 28 Sep 2020 10:22:54 +0000 (UTC) Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTP id c493515b for ; Mon, 28 Sep 2020 09:51:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=zx2c4.com; h=mime-version :references:in-reply-to:from:date:message-id:subject:to:cc :content-type; s=mail; bh=wTAhT9EYxTkHdUEgSfGeOhslmQ8=; b=lAblRJ I0VxgjLuhvHrMmvpKN/6dpPSVtG3oWVHQGKKCZzFG779KRafrpi5AB4vRvMrcsVz SlJwSS82Byw84Ewy4npsCvqIZk5h3tFrWUc1kwLUiWCvT0kT0o76w2hnY7stVwGh wr0lARQSXHVrh3/1/qXUBClb/K/1aa+I3UdBpspjx5sXGqSRXV/rQte1v27fP3he y8WMx7hmIA4chBGr/RXcxRfC8etKwCRTlXzHJKsd1euHQNYTiyCfOn6t1FxUDl5+ 9B4XsBK7Errr4y+9CHJ31d3L+xdynZjvO+woDImwuPO85Lqa2FyBRPaew/UUMagC InGEjzoGBoOQQvcw== Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id 5edb1c6f (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO) for ; Mon, 28 Sep 2020 09:51:27 +0000 (UTC) Received: by mail-il1-f182.google.com with SMTP id l16so632945ilt.13 for ; Mon, 28 Sep 2020 03:22:54 -0700 (PDT) X-Gm-Message-State: AOAM533M5ceWpTLS028W6a69dDBg+gCSSvkMHHT9HMfkptt6gIsiEd9g kOogxLu8G84w/pgggI6bhF47vRYVCw7eSvoudAs= X-Google-Smtp-Source: ABdhPJyZRzG1bbGT6XpASR1fpR2gx9TmJTgCyZ7QIBzrdzJrmTojXadzf89yA17ovlLpgM+2msLgC+ayvNRMnU0GABs= X-Received: by 2002:a92:988c:: with SMTP id a12mr548508ill.38.1601288573296; Mon, 28 Sep 2020 03:22:53 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: "Jason A. Donenfeld" Date: Mon, 28 Sep 2020 12:22:42 +0200 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: 5.9-rc7 null ptr deref in __i915_gem_userptr_get_pages_worker To: Jason Gunthorpe , Peter Xu , Linus Torvalds Cc: intel-gfx@lists.freedesktop.org, "open list:DRM DRIVERS" , open list , Chris Wilson , Linux-MM , Andrew Morton Content-Type: text/plain; charset="UTF-8" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000062, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Oh, this is just a copy and paste error, when the code was originally pasted from internal_get_user_pages_fast, which assumes a current. I'll fix this up and send a patch shortly.