Linux filesystem development
 help / color / mirror / Atom feed
From: Christian Brauner <brauner@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>,
	Jann Horn <jannh@google.com>
Cc: Mateusz Guzik <mjguzik@gmail.com>,
	viro@zeniv.linux.org.uk, linux-kernel@vger.kernel.org,
	linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH v2] vfs: shave work on failed file open
Date: Thu, 28 Sep 2023 16:05:08 +0200	[thread overview]
Message-ID: <20230928-themen-dilettanten-16bf329ab370@brauner> (raw)
In-Reply-To: <20230928-kulleraugen-restaurant-dd14e2a9c0b0@brauner>

> So I spent a good chunk of time going through this patch.

The main thing that makes me go "we shouldn't do this" is that KASAN
isn't able to detect UAF issues as Jann pointed out so I'm getting
really nervous about this.

And Jann also pointed out some potential issues with
__fget_files_rcu() as well...

  reply	other threads:[~2023-09-28 14:05 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-26 16:22 [PATCH v2] vfs: shave work on failed file open Mateusz Guzik
2023-09-26 19:00 ` Linus Torvalds
2023-09-26 19:28   ` Mateusz Guzik
2023-09-27 14:09     ` Christian Brauner
2023-09-27 14:34       ` Mateusz Guzik
2023-09-27 17:48       ` Linus Torvalds
2023-09-27 17:56         ` Mateusz Guzik
2023-09-27 18:05           ` Linus Torvalds
2023-09-27 18:32             ` Mateusz Guzik
2023-09-27 20:27               ` Linus Torvalds
2023-09-27 21:06                 ` Mateusz Guzik
2023-09-27 21:18                   ` Linus Torvalds
2023-09-27 21:30                     ` Mateusz Guzik
2023-09-28 13:25                 ` Christian Brauner
2023-09-28 14:05                   ` Christian Brauner [this message]
2023-09-28 14:43                     ` Jann Horn
2023-09-28 17:21                       ` Linus Torvalds
2023-09-29  9:20                         ` Christian Brauner
2023-09-29 13:31                           ` Jann Horn
2023-09-29 19:57                             ` Christian Brauner
2023-09-29 21:23                               ` Mateusz Guzik
2023-09-29 21:39                                 ` Mateusz Guzik
2023-09-29 23:57                                   ` Linus Torvalds
2023-09-30  9:04                                     ` Christian Brauner
2023-10-03 16:45                                       ` Nathan Chancellor
2023-10-10  3:06                                       ` Al Viro
2023-10-10  8:29                                         ` Christian Brauner
2023-09-29 22:24                                 ` Matthew Wilcox
2023-09-29 23:02                                   ` Jann Horn

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20230928-themen-dilettanten-16bf329ab370@brauner \
    --to=brauner@kernel.org \
    --cc=jannh@google.com \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mjguzik@gmail.com \
    --cc=torvalds@linux-foundation.org \
    --cc=viro@zeniv.linux.org.uk \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox