linux-kernel - [GIT PULL] afs: Fix directory size handling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <1647979.1683051720@warthog.procyon.org.uk>
Date:   Tue, 02 May 2023 19:22:00 +0100
From:   David Howells <dhowells@...hat.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     David Howells <dhowells@...hat.com>,
        Marc Dionne <marc.dionne@...istor.com>,
        linux-afs@...ts.infradead.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [GIT PULL] afs: Fix directory size handling

Hi Linus,

Could you apply these three fixes to AFS directory handling?

 (1) Make sure that afs_read_dir() sees any increase in file size if the
     file unexpectedly changed on the server (e.g. due to another client
     making a change).

 (2) Make afs_getattr() always return the server's dir file size, not the
     locally edited one, so that pagecache eviction doesn't cause the dir
     file size to change unexpectedly.

 (3) Prevent afs_read_dir() from getting into an endless loop if the server
     indicates that the directory file size is larger than expected.

Thanks,
David
---
The following changes since commit 865fdb08197e657c59e74a35fa32362b12397f58:

  Merge tag 'input-for-v6.4-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input (2023-05-01 17:18:56 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git tags/afs-fixes-20230502

for you to fetch changes up to 9ea4eff4b6f4f36546d537a74da44fd3f30903ab:

  afs: Avoid endless loop if file is larger than expected (2023-05-02 17:23:50 +0100)

----------------------------------------------------------------
AFS fixes

----------------------------------------------------------------
David Howells (1):
      afs: Fix getattr to report server i_size on dirs, not local size

Marc Dionne (2):
      afs: Fix updating of i_size with dv jump from server
      afs: Avoid endless loop if file is larger than expected

 fs/afs/dir.c   |  4 ++++
 fs/afs/inode.c | 10 +++++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)