From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (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 5FDDF149C41 for ; Sun, 20 Jul 2025 13:33:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753018385; cv=none; b=b4lY3dX1b3IsEZOMVnzUwHRO1K3Ep1jq068L1NbX5jAzH6lVm7ga2YK1hVZDbD8uywQIlyk0ZtamG4h1/J2uFzvVCtmOQ/W0WxNxAODzNgzdzSig6LxW4VoSuyM1p9dgMLfD1ARzo9W3UuV2eBmiF01lmbWqmQwpk4nQZbtQRoQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753018385; c=relaxed/simple; bh=hiadyt6JiRHKKPeaNbaz5kGv0eXF2X4V7RwiBqCUDKE=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=adP2RIHM2k5ZKGgMbGv/ROlSqVM/W8Qp65ZGztfj44E4SctdlWFV6+Or5rRe5Yw6Msgt3i/gE7VoBMLQYiK3Rj1Vs/TFiPfkZrODSnDcS3csbFdxSWXGGdwtB4yH3p/Yh89j8Q51g275V1unyGYhLQyRLbzbj8Delhe5OcCiWdM= 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=209.85.166.197 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-f197.google.com with SMTP id e9e14a558f8ab-3ddcc7e8266so44824625ab.0 for ; Sun, 20 Jul 2025 06:33:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1753018383; x=1753623183; h=content-transfer-encoding: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=sEPLNc+uW1L8mXsEcE+3SJcG8i3IDrc7XAfrgDWHR3E=; b=D0UrvXeXqGb6pLMJ48js02SxVkVSJ3Qt+Pb64WLFGdDMdj+8QRRbFtjA2lcnkqAr4m 6LJVfXMX38lH4Q/Km6n9kRLOiVI5GzdPgILZ3NTSuRvWxXPlziVxinIVcROXdMp01MJ3 NWipaFVM8qlgZzuUBDRW5mJpTF5N5hJ2Jhgbm4K1dCxafYniPq7edQ88mGGeDzLqE4XI cQ/ONlsy5wlqAECST+sRnGijNpYlffj1KTYYhwk9vjVqpbUE6JXh4xr6/NmWjfyxn+mk GbK4vnr2PZP+ohnwPqsGcy+4Wr4xcez04yXoOoDxd38GbeCqxKgxZuVXD05o8lhc5VwK 7xzw== X-Forwarded-Encrypted: i=1; AJvYcCWWbBwVi6pgn2t0LZA+hm57YBZDqlhovqvyy2aroJiCCPstYSDnGLkZNm49gmMpY92f6ZutxguVbO1Sv64=@vger.kernel.org X-Gm-Message-State: AOJu0YzycPvbJ1XHjAgeu4GdHyRxn1fCq5V1vzuvsXpzUJvIZr9YAJtB HL0v4QDF52YyQ8KrgQfD+ieFOqrNr0NXWlret84OAoTHQYdOSmBGaXh53pHZciZ07ECxCuxUghw wgKSFJUPF3+M9isZrhHqfjWWx5/mYSGChS3PNu0a3FD2mLAAmSiIV1SGbTxg= X-Google-Smtp-Source: AGHT+IFN/a7rk4RMZ5ezNaybTM0CicPgG3FdrMd19t169LMXbn9w3qAsF0VojC38rPQzMkgAtcagQu8xCrh/IrjBseGWVwFOpX4X Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2196:b0:3e2:9f30:c05f with SMTP id e9e14a558f8ab-3e29f30c214mr46710155ab.5.1753018383423; Sun, 20 Jul 2025 06:33:03 -0700 (PDT) Date: Sun, 20 Jul 2025 06:33:03 -0700 In-Reply-To: <67eba499.050a0220.297a31.0009.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <687cf00f.a70a0220.693ce.00c1.GAE@google.com> Subject: Re: [syzbot] [kernfs?] possible deadlock in kernfs_iop_getattr From: syzbot To: axboe@kernel.dk, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, ming.lei@redhat.com, syzkaller-bugs@googlegroups.com, thomas.hellstrom@linux.intel.com, tj@kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable syzbot has bisected this issue to: commit ffa1e7ada456087c2402b37cd6b2863ced29aff0 Author: Thomas Hellstr=C3=B6m Date: Tue Mar 18 09:55:48 2025 +0000 block: Make request_queue lockdep splats show up earlier bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=3D12d9a38c5800= 00 start commit: bf61759db409 Merge tag 'sched_ext-for-6.16-rc6-fixes' of g.= . git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=3D11d9a38c5800= 00 console output: https://syzkaller.appspot.com/x/log.txt?x=3D16d9a38c580000 kernel config: https://syzkaller.appspot.com/x/.config?x=3D415e83411fefd73= f dashboard link: https://syzkaller.appspot.com/bug?extid=3D4bb2305559463e8f6= a2a syz repro: https://syzkaller.appspot.com/x/repro.syz?x=3D1242b7d458000= 0 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=3D12b6238c580000 Reported-by: syzbot+4bb2305559463e8f6a2a@syzkaller.appspotmail.com Fixes: ffa1e7ada456 ("block: Make request_queue lockdep splats show up earl= ier") For information about bisection process see: https://goo.gl/tpsmEJ#bisectio= n