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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 00038EB64DC for ; Sun, 16 Jul 2023 02:57:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229814AbjGPC51 (ORCPT ); Sat, 15 Jul 2023 22:57:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53980 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229451AbjGPC5Z (ORCPT ); Sat, 15 Jul 2023 22:57:25 -0400 Received: from mail-oo1-f71.google.com (mail-oo1-f71.google.com [209.85.161.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7E8DE1BE for ; Sat, 15 Jul 2023 19:57:24 -0700 (PDT) Received: by mail-oo1-f71.google.com with SMTP id 006d021491bc7-56601c9a4feso4462821eaf.1 for ; Sat, 15 Jul 2023 19:57:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689476244; x=1692068244; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=AV1p85HbsZJ9THimnEm3QDwwQ23M02O0o2ECpycPfwE=; b=ZokCd8HTbHZrA7FkjrOiAENG+tOPuCCgSajnhCCQjZTQLrXT2S+OsFOUjSkBJ3ZmbG +Dkb6Q+8m9LQNUttDLV7ksux9gn8Bpj2HeXzMqLW3OdvlbQM2CVwlQkBEQmzyeBnednr 9fHz/RBL3n3aWwgcMFt9Lj1D+PcvP7tc5sPu1CRYvd6pj6cOE6EwQ4uhJF6SZGd9XhNP LfjB0VDX4A1VkogbR6bzMYp6Ml9JXCzGUi66s+cI4/sz4xJqPdeQ8qEotMLb4igCAP72 jXT+jJSjLQwAvC4gan+JQcHP3cbfU9kk/A/aNUSlgZW1f6o/CMEeaL38vRm8Q/b1avgB BvYw== X-Gm-Message-State: ABy/qLaoYjSnqO018Hp9fzNjZsh6aqkDEiwMbqfnpHmaINeg4zFYulUM JcXz8g8ZMEfHUmPnT9m4GPxfjRJHJd7o4459gi+T5FvLrRH6 X-Google-Smtp-Source: APBJJlHXRLig0RINXY3j+dbjr1Lw0gM/KWkDKlJRrUJRkV/EIhqOm6+gsAeWprJYorKp04zmsmZJzjX1koudKJo1771XcG86+k/s MIME-Version: 1.0 X-Received: by 2002:a05:6808:30a5:b0:3a4:4b42:5ce1 with SMTP id bl37-20020a05680830a500b003a44b425ce1mr4442302oib.3.1689476243880; Sat, 15 Jul 2023 19:57:23 -0700 (PDT) Date: Sat, 15 Jul 2023 19:57:23 -0700 In-Reply-To: <00000000000054bd5b06006df9c8@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005f80ad060091d7cb@google.com> Subject: Re: [syzbot] [iommu?] WARNING in iommufd_access_destroy From: syzbot To: alex.williamson@redhat.com, iommu@lists.linux.dev, jgg@nvidia.com, jgg@ziepe.ca, joro@8bytes.org, kevin.tian@intel.com, linux-kernel@vger.kernel.org, nicolinc@nvidia.com, robin.murphy@arm.com, syzkaller-bugs@googlegroups.com, terrence.xu@intel.com, will@kernel.org, yi.l.liu@intel.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit 54b47585db6658a5eb898d4d45be18d1e581c1bf Author: Nicolin Chen Date: Mon Mar 27 09:33:47 2023 +0000 iommufd: Create access in vfio_iommufd_emulated_bind() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16549b42a80000 start commit: b6e6cc1f78c7 Merge tag 'x86_urgent_for_6.5_rc2' of git://g.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=15549b42a80000 console output: https://syzkaller.appspot.com/x/log.txt?x=11549b42a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=6769a69bd0e144b4 dashboard link: https://syzkaller.appspot.com/bug?extid=7574ebfe589049630608 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=123562dca80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15825e1aa80000 Reported-by: syzbot+7574ebfe589049630608@syzkaller.appspotmail.com Fixes: 54b47585db66 ("iommufd: Create access in vfio_iommufd_emulated_bind()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection