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=-3.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 BB827C433EF for ; Thu, 23 Sep 2021 06:03:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 98C4461090 for ; Thu, 23 Sep 2021 06:03:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239287AbhIWGEr (ORCPT ); Thu, 23 Sep 2021 02:04:47 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:33497 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239237AbhIWGEq (ORCPT ); Thu, 23 Sep 2021 02:04:46 -0400 Received: by mail-io1-f72.google.com with SMTP id g2-20020a6b7602000000b005be59530196so4988130iom.0 for ; Wed, 22 Sep 2021 23:03:15 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=JXvRrW1iqPMwIYRHYBPAsiAM0PkHzg5GtfxmrglxQzQ=; b=aX/WhxLRdSksoRNAEgCJJrCKnRbfZ/0NGcR1uMLtwaapmnWO+vLKa58jWHaPxHAqAq eNO74CwlxPX7KSHpjgFkySzhCiVSnD2w4DskJaW5DCgZxJ37cWDssU5kQK5Ox0hovT4L /CwC/BpxuRJNt1eMq5CHbkjHRzGoqnZzo6nhjNw8J2OaKWT2+j3W00Y8UXtVKUfwYdcD XxEJfCX4lNs8D2Xky8WuN6swQhBIrR4Gh58sF9umRx6HgJx5f/zDaC5rtMScTSpw1ygB l1mg1blRuhs6qxM2jdIN5lTL2aguzbqCdElJTq5ud6tq/GtkwTpTwMAWqdjtFIhlZM36 7OZg== X-Gm-Message-State: AOAM530VsA8gbImkvaVVTJaECqKJXhDZ2TO6brbtw+OcmeClDOFZE6l7 Z8EFVHm2Ihhq0oDaS4oAT3EZQVtwiXEI/iVfCQlUys33Tz11 X-Google-Smtp-Source: ABdhPJwT9OjdtEE+jw3AVImKDXCzwGMdqVOLT4j2uiwu093ZOHPBREg1Xj/g9V66d630WZBAzcZXMF3cUBsYko/IRsjfaVrFtJsz MIME-Version: 1.0 X-Received: by 2002:a6b:6a13:: with SMTP id x19mr2455017iog.111.1632376994998; Wed, 22 Sep 2021 23:03:14 -0700 (PDT) Date: Wed, 22 Sep 2021 23:03:14 -0700 In-Reply-To: <000000000000bf710a05b05ae3f6@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ed2e6705cca36282@google.com> Subject: Re: [syzbot] possible deadlock in f_getown From: syzbot To: asm@florahospitality.com, bfields@fieldses.org, boqun.feng@gmail.com, desmondcheongzx@gmail.com, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk, will@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot suspects this issue was fixed by commit: commit f671a691e299f58835d4660d642582bf0e8f6fda Author: Desmond Cheong Zhi Xi Date: Fri Jul 2 09:18:30 2021 +0000 fcntl: fix potential deadlocks for &fown_struct.lock bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15fa8017300000 start commit: 293837b9ac8d Revert "i915: fix remap_io_sg to verify the p.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=18fade5827eb74f7 dashboard link: https://syzkaller.appspot.com/bug?extid=8073030e235a5a84dd31 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=171390add00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10050553d00000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: fcntl: fix potential deadlocks for &fown_struct.lock For information about bisection process see: https://goo.gl/tpsmEJ#bisection