linux-kernel - [PATCH v2 0/3] Add alignment check for DAX mount

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: <1462214578-27122-1-git-send-email-toshi.kani@hpe.com>
Date:	Mon,  2 May 2016 12:42:55 -0600
From:	Toshi Kani <toshi.kani@....com>
To:	dan.j.williams@...el.com, jack@...e.cz, david@...morbit.com
Cc:	hch@...radead.org, boaz@...xistor.com, tytso@....edu,
	adilger.kernel@...ger.ca, ross.zwisler@...ux.intel.com,
	toshi.kani@....com, micah.parrish@....com,
	linux-nvdimm@...ts.01.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/3] Add alignment check for DAX mount

When a partition is not aligned by 4KB, mount -o dax succeeds,
but any read/write access to the filesystem fails, except for
metadata update.

Add alignment check to ext4, ext2, and xfs.

v2:
 - Use a helper function via ->direct_access for the check.
   (Christoph Hellwig)
 - Call bdev_direct_access() with sector 0 for the check.
   (Boaz Harrosh)

---
Toshi Kani (3):
 1/3 ext4: Add alignment check for DAX mount
 2/3 ext2: Add alignment check for DAX mount
 3/3 xfs: Add alignment check for DAX mount

---
 fs/ext2/super.c    | 21 +++++++++++++++++++--
 fs/ext4/super.c    | 20 ++++++++++++++++++--
 fs/xfs/xfs_super.c | 23 +++++++++++++++++++----
 3 files changed, 56 insertions(+), 8 deletions(-)