[PATCHSET,0/1] xfs: tighten GETBMAP input validation

Message ID	164316351504.2600306.5900193386929839795.stgit@magnolia (mailing list archive)
Headers	show Return-Path: <linux-xfs-owner@kernel.org> Subject: [PATCHSET 0/1] xfs: tighten GETBMAP input validation From: "Darrick J. Wong" <djwong@kernel.org> To: djwong@kernel.org Cc: linux-xfs@vger.kernel.org Date: Tue, 25 Jan 2022 18:18:35 -0800 Message-ID: <164316351504.2600306.5900193386929839795.stgit@magnolia> User-Agent: StGit/0.19 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Precedence: bulk
Series	xfs: tighten GETBMAP input validation \| expand [PATCHSET,0/1] xfs: tighten GETBMAP input validation [1/1] xfs: reject crazy array sizes being fed to XFS_IOC_GETBMAP*

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164316351504.2600306.5900193386929839795.stgit@magnolia (mailing list archive)

Headers

Subject: [PATCHSET 0/1] xfs: tighten GETBMAP input validation
From: "Darrick J. Wong" <djwong@kernel.org>
To: djwong@kernel.org
Cc: linux-xfs@vger.kernel.org
Date: Tue, 25 Jan 2022 18:18:35 -0800
Message-ID: <164316351504.2600306.5900193386929839795.stgit@magnolia>
User-Agent: StGit/0.19
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
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Series

xfs: tighten GETBMAP input validation | expand

Message

Darrick J. Wong Jan. 26, 2022, 2:18 a.m. UTC

Hi all,

syzbot complained that the input validation for XFS_IOC_GETBMAP isn't as
strict as the one in the kvmalloc calls that it uses to stage the bmap
reporting.  This is an annoying use of maintainer time, but fix it anyway.

If you're going to start using this mess, you probably ought to just
pull from my git trees, which are linked below.

This is an extraordinary way to destroy everything.  Enjoy!
Comments and questions are, as always, welcome.

--D

kernel git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/xfs-linux.git/log/?h=getbmap-validation-5.17
---
 fs/xfs/xfs_ioctl.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)