From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 E6A2B1BEF69 for ; Fri, 3 Jan 2025 23:11:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735945899; cv=none; b=E0RJQ+6Y6xg+sz230a39tQeQxVzem8QGTFvhFS2WhDlxaMHddBolXUu8rGsTI4eJ3PGIlozrXRxIT7a3Jzmu1UXbEb9226yoCrHuoK7PMZfPHnvQeeZTh1EyR1WBQeiHe5HqcugOgnFLa6lFVr6Y4FQ7EQOwTabdi7NftJni+pw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735945899; c=relaxed/simple; bh=jCqN1Wkyb/pLojOb6/3V8BZ+ft0za0KaNr4VwZwlbdY=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To:Cc: Content-Type; b=ZR2jLseFoXfEZgcvfNFbk5q5KmsNOYL2LxnZJGxk7HjfeBSzqbTVRogs2q6xIzfKPT04Kvi36Xi5nmHMUsBlHkBOL0smshgf76CwtwKxgaFOv9vidCRydyk8xmYeNlwqnriCG9W7GH3iMG5SY+5K2PEHUi4OBMdegpqtx+FiF0E= 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=209.85.166.200 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-f200.google.com with SMTP id e9e14a558f8ab-3a81684bac0so259547005ab.0 for ; Fri, 03 Jan 2025 15:11:37 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1735945897; x=1736550697; h=content-transfer-encoding:cc: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=jCqN1Wkyb/pLojOb6/3V8BZ+ft0za0KaNr4VwZwlbdY=; b=GDk3Dk/aP+BHqFOulWFF+1wjZd1ogN4QSFID7PUgsTsKw6s93MBlhWg/f9c16wvsqs /aYyBl/X+1GIWjaAsqzSdRM9luL2fWphGlbhT+e74VPxH1juy3OeoyOIJe/IUvH5mUEZ sovbHYWtZSXin3sQWlTRjxxTzL7sdi7XNkopFALrO4N5CcLusEChlAO42vhUBsG47QhT nCNp8EeCilqBmXflodvHCQ/uQjdBlwyeLMn3VDgyXm6mWteSGHCO2dyiJGkvOoIMXRTZ E9snv5lcwmK0BlNEOA2CIuq44UZFCt6rdPwz87QjfaRbqqngoK7D8e+NIAQCUFDWH28P M/Xg== X-Forwarded-Encrypted: i=1; AJvYcCWgzVAGSa6+UrGcuCYHT+sFB6gPwgWF4qrVRSWtxrvmNK6e3Q131nzttQ02d/F2p1B9gkAgRw==@lists.linux.dev X-Gm-Message-State: AOJu0YyUFvmHeOqnFd++rmG1tYwTVoD7bweo3kpBMqmOaPGki2TVyVFY D9nmmtgXnxxIhCg/F9mn9JOMXc9kXWretmHRKJFAvGb15+UbEgQi/xbkmW8UrHZkOPsu2sGeTqA ivIVd1KiFdvldRKLZekrlAK0ONc9Lhz+3rBot9iywZ3aKRfLQmwdZ0OI= X-Google-Smtp-Source: AGHT+IFOpzzcVtSGjl2YcYkUd+APZpWzYsM88yHA6me+VNzS69z0kbOmvzrDiPTyKkPMUAIru9KbbPA1Q8fXui3RpcE/mAiABlvs Precedence: bulk X-Mailing-List: netfs@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a92:c54b:0:b0:3a9:e2f3:8dc4 with SMTP id e9e14a558f8ab-3c2d5928edcmr450473375ab.20.1735945897220; Fri, 03 Jan 2025 15:11:37 -0800 (PST) Date: Fri, 03 Jan 2025 15:11:37 -0800 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67786ea9.050a0220.7f35c.0000.GAE@google.com> Subject: Re: [syzbot] [netfs?] KASAN: slab-use-after-free Read in iov_iter_revert From: syzbot To: joannelkoong@gmail.com Cc: dhowells@redhat.com, jlayton@kernel.org, joannelkoong@gmail.com, josef@toxicpanda.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, miklos@szeredi.hu, mszeredi@redhat.com, netfs@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable > On Thu, Jan 2, 2025 at 12:19=E2=80=AFPM syzbot > wrote: >> >> > #syz test git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.= git >> >> want either no args or 2 args (repo, branch), got 1 >> >> > 7a4f5418 > > Sorry for the late reply on this Miklos, didn't realize this was > related to my "convert direct io to use folios" change. > > I think Bernd's fix in 78f2560fc ("fuse: Set *nbytesp=3D0 in > fuse_get_user_pages on allocation failure") should have fixed this? > > #syz test git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git want either no args or 2 args (repo, branch), got 1 > for-next