From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F41FC17BA5 for ; Thu, 28 Nov 2024 18:56:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732820165; cv=none; b=U0yyv4hzRI6ea5W9NZW4ca3CVJmN7ka6ayjVG/8bMijkhzkWZjjU1iOjMIYkiHEslwH8NGyhai381bWLWdVxQLZVuwkl1ApCqAq14PEUG/pIf77S7Fah/NK3ri+moJhrtjunNWElIR1oUklOn+DyInuo9vCBpTZ8pzCzrls05Gc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732820165; c=relaxed/simple; bh=Z+PpZtkz/FpeuJ9ipJoPBWSHvemXysnT3IG2YHEnkjM=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=VIet1K8+ozUc0V4vcWWy6QADiHhxbra6MEuRNCRsOr634IzUJygQNsuTcAHLAajcjrvoz8pWZPPR1/Hd83joC/nckCrPTC94mbwyT8kYzlmdZiEtbSEb8R8IBoaL84X2Ie/t0Z5RSr1S+TwckTs3b6x+Nw3DAnenZ0hnm6gXbvs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f199.google.com with SMTP id e9e14a558f8ab-3a787d32003so10490745ab.0 for ; Thu, 28 Nov 2024 10:56:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1732820163; x=1733424963; 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=rFnkMusVUvztaavp+Wcshy/0sAVSnlDNlHNqkEC4OWw=; b=cKbPGjV3TwXrat2kcxLAL3JG7e1MjXokRPeruuoYXD4Qxeusfuafz+gT/4uCuiqeFy nPUDH8AHGq40V3KJ2v2KFWclMX6Au75CowY3m7wvuzkrxBo8HUlu0/VDg2vygxclDEfR 85ovuX1NJgW0ZICcYCs9B9akTwC82iHg4RQo/NTgg8QIjJ8UX7GnnRZT/ltrA93sUIUL MSpO28w2fxzg4FXPnBo+DW57v/V0fyRzL6gx05IsiZ2+oJXJTpp1sRRFIWtUV+wWTM7b o6LvN2K9gOy8jWGWPSkve/yqG7OYD9FlpFG1HBOHzykBVs4OwrtyKDIwkHkUmGGm5DHN PtnQ== X-Forwarded-Encrypted: i=1; AJvYcCUKAsOfI5HtKeMlY6FH773rXqfaueqtQPiUGYZxHitpzESFMhs8Iayt2MEbndD7XubG/n4CCG/gAuXS3as6@vger.kernel.org X-Gm-Message-State: AOJu0YyHUq+CDFUsdq+enbxPqloRdZK600tIqddWIzTpj59/PHWeDeFk YPXq983tzX99HdkwQL276kbcia6MrAHbs4OtG544dWAtSLELqR1+IsRjk5b2QJhlgSbxcYKG7cG bm8EVmUGGn/dBfceozaK4SnAjvHpwX3+wpvqDwt0yf0+8dSPEfXPu3e0= X-Google-Smtp-Source: AGHT+IGNAXCnkSyv5wsjsl1uLr0IvOlIpNkPenO2sAYjOOEncjSd92ioAVMokDfo7yC3eNrZ0aBco1l6dWJiwOCw+6uPBkUTfWGX Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2164:b0:3a7:6792:60f with SMTP id e9e14a558f8ab-3a7c5523f52mr85784815ab.4.1732820163265; Thu, 28 Nov 2024 10:56:03 -0800 (PST) Date: Thu, 28 Nov 2024 10:56:03 -0800 In-Reply-To: <67432dee.050a0220.1cc393.0041.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6748bcc3.050a0220.253251.008c.GAE@google.com> Subject: Re: [syzbot] [btrfs?] kernel BUG in __folio_start_writeback From: syzbot To: akpm@linux-foundation.org, clm@fb.com, dsterba@suse.com, josef@toxicpanda.com, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, nogikh@google.com, syzkaller-bugs@googlegroups.com, willy@infradead.org, wqu@suse.com Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit c87c299776e4d75bcc5559203ae2c37dc0396d80 Author: Qu Wenruo Date: Thu Oct 10 04:46:12 2024 +0000 btrfs: make buffered write to copy one page a time bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=165dd3c0580000 start commit: 228a1157fb9f Merge tag '6.13-rc-part1-SMB3-client-fixes' o.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=155dd3c0580000 console output: https://syzkaller.appspot.com/x/log.txt?x=115dd3c0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=402159daa216c89d dashboard link: https://syzkaller.appspot.com/bug?extid=aac7bff85be224de5156 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13840778580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17840778580000 Reported-by: syzbot+aac7bff85be224de5156@syzkaller.appspotmail.com Fixes: c87c299776e4 ("btrfs: make buffered write to copy one page a time") For information about bisection process see: https://goo.gl/tpsmEJ#bisection