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[2620:137:e000::1:20]) by mx.google.com with ESMTP id x4-20020a63db44000000b004fbe5ede659si19357790pgi.317.2023.04.27.10.37.12; Thu, 27 Apr 2023 10:37:26 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244239AbjD0Rb0 (ORCPT + 99 others); Thu, 27 Apr 2023 13:31:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38728 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243441AbjD0RbY (ORCPT ); Thu, 27 Apr 2023 13:31:24 -0400 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0776A110 for ; Thu, 27 Apr 2023 10:31:24 -0700 (PDT) Received: by mail-il1-f199.google.com with SMTP id e9e14a558f8ab-329572e5abeso133374895ab.2 for ; Thu, 27 Apr 2023 10:31:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682616683; x=1685208683; 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=jUlb2jQpUPLeatHfobfTWKSKYzA/oDXwJnYhGmKuIMo=; b=f5D51iexpi/Bq4mM1d+d8IORUcTK0ijifEPpNXpkZu+EqDKjLqGhZ+8dLy5/S7TcYz 99w8Fke9+G2wVL42sunEky0fy5W9+9LbegP5i5x8n3wasqYpDdampkFgiMQxl7qngRoa JtJBB5/8y/V77DnUqQbw+CX5FkuV+9g/sKd2bvcJlA/Ucb6/0dJJxC25Mjy4A0i4Wp4k ewx0UZXn3Csy5FBybLqHAZ9z9dDGuENNo4fy2IHxbfJCjH4xMlxh+Qyb/38wTUzS3aMu cCU6rAuGgOsKoSzpa7uDoqHyDrV0ZlkrXYW2k1BLMwGos6gpkXznAp6l9ZiEcQ/JNqmf KXmQ== X-Gm-Message-State: AC+VfDxK86nFfQb7gLZVXpXB0Yvq1fRysHGmSobPXBfwZfYJBYcOO1pu j9Q1gj+aRldbVn+qsDwbEmFJEGC1O0Qz9+9ZXdDDUE/Dl4wp MIME-Version: 1.0 X-Received: by 2002:a92:c009:0:b0:328:c3ae:ec08 with SMTP id q9-20020a92c009000000b00328c3aeec08mr1728914ild.1.1682616683390; Thu, 27 Apr 2023 10:31:23 -0700 (PDT) Date: Thu, 27 Apr 2023 10:31:23 -0700 In-Reply-To: <0000000000003f3d9a05f56fcac5@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b4f18805fa54b9f7@google.com> Subject: Re: [syzbot] [kernfs?] WARNING: suspicious RCU usage in mas_start From: syzbot To: Liam.Howlett@oracle.com, akpm@linux-foundation.org, david@redhat.com, gregkh@linuxfoundation.org, liam.howlett@oracle.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tj@kernel.org Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2, SORTED_RECIPS,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot suspects this issue was fixed by commit: commit 6db504ce55bdbc575723938fc480713c9183f6a2 Author: Liam R. Howlett Date: Wed Mar 8 22:03:10 2023 +0000 mm/ksm: fix race with VMA iteration and mm_struct teardown bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1674715fc80000 start commit: f3a2439f20d9 Merge tag 'rproc-v6.3' of git://git.kernel.or.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=dd442ddf29eaca0c dashboard link: https://syzkaller.appspot.com/bug?extid=d79e205d463e603f47ff syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12cfaf1cc80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=149edbf0c80000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: mm/ksm: fix race with VMA iteration and mm_struct teardown For information about bisection process see: https://goo.gl/tpsmEJ#bisection