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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6FD4DC433F5 for ; Fri, 18 Mar 2022 22:33:20 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4KKzLQ61k9z30NZ for ; Sat, 19 Mar 2022 09:33:18 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com (client-ip=209.85.166.199; helo=mail-il1-f199.google.com; envelope-from=3owg1ygkbakasyzkallerappid.googleusercontent.com@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com; receiver=) Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4KKzLH6hF1z2xsW for ; Sat, 19 Mar 2022 09:33:10 +1100 (AEDT) Received: by mail-il1-f199.google.com with SMTP id g5-20020a92dd85000000b002c79aa519f4so5537951iln.10 for ; Fri, 18 Mar 2022 15:33:10 -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=mIO9yRV3fgG/DVkTsgBW4fDvGqZ5uti//MXNsZwJ45E=; b=7HdsZo2590i/IwPf895GAA7NHJfPB8sTfxAJHCePFrfp7PudXuNQUWCdSWP9/0yKLa kAoHgJryGaaHA+ZaPOPL/D3OMnM/LmhLWG9QldXx2T+9Dc5xFyThISXue2DggTtBkYp5 WAbWPBhBuFWRqXsfyM/gqszfIrZ8jeTO3L3RAfXaduEW1zubzdc8Q1a+IZT3MWNfgVFL aEmA05OR/9mjNaAn4TGvASQPq54Sjb+zC1SPBFMLBc+ibqk4DNYGdo2HXXnwivFbQPpd JE+5M2KPPpuym4+PcXPgkvA/hRGPF73gV2FUfK4rV4CgabA0G2Uk6NnzhYvlwhRXo5qI 6I0A== X-Gm-Message-State: AOAM5329AV6cl1o/CjCyBgu1bOHSCI7hnJ32dgFb0zddKfpRNrWkRBAf STUKJTeaVVy9P04+qheaC7o9c7DwJwvZC9sWaXXN71/kapHw X-Google-Smtp-Source: ABdhPJyQ2FOq8nKOfS42EnBuiD0kcWb9Hx8aBpPKskdcVGGzqfnU9wZ8ty9Vzaq2PmqftTKzmHQDWp4Kv8S6lnisQYEEJBYhVGSQ MIME-Version: 1.0 X-Received: by 2002:a02:5b85:0:b0:319:ff85:ff5 with SMTP id g127-20020a025b85000000b00319ff850ff5mr5922420jab.250.1647642787039; Fri, 18 Mar 2022 15:33:07 -0700 (PDT) Date: Fri, 18 Mar 2022 15:33:07 -0700 In-Reply-To: <000000000000dda2f905da80c934@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000009cf1e05da85bb31@google.com> Subject: Re: [syzbot] WARNING: kobject bug in erofs_unregister_sysfs From: syzbot To: akpm@linux-foundation.org, chao@kernel.org, linux-erofs@lists.ozlabs.org, linux-kernel@vger.kernel.org, sfr@canb.auug.org.au, songmuchun@bytedance.com, syzkaller-bugs@googlegroups.com, xiang@kernel.org Content-Type: text/plain; charset="UTF-8" X-BeenThere: linux-erofs@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development of Linux EROFS file system List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-erofs-bounces+linux-erofs=archiver.kernel.org@lists.ozlabs.org Sender: "Linux-erofs" syzbot has bisected this issue to: commit 2768c206f2c3e95c0e5cf2e7f846103fda7cd429 Author: Muchun Song Date: Thu Mar 3 01:15:36 2022 +0000 mm: list_lru: allocate list_lru_one only when needed bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1495694d700000 start commit: 91265a6da44d Add linux-next specific files for 20220303 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=1695694d700000 console output: https://syzkaller.appspot.com/x/log.txt?x=1295694d700000 kernel config: https://syzkaller.appspot.com/x/.config?x=617f79440a35673a dashboard link: https://syzkaller.appspot.com/bug?extid=f05ba4652c0471416eaf syz repro: https://syzkaller.appspot.com/x/repro.syz?x=137f17d9700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=114ebabd700000 Reported-by: syzbot+f05ba4652c0471416eaf@syzkaller.appspotmail.com Fixes: 2768c206f2c3 ("mm: list_lru: allocate list_lru_one only when needed") For information about bisection process see: https://goo.gl/tpsmEJ#bisection