linux-kernel - Re: [PATCH] jffs2: prevent xattr node from overflowing the eraseblock

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Message-ID: <20240417-kapern-angegangen-0ac84cd51096@brauner>
Date: Wed, 17 Apr 2024 13:22:04 +0200
From: Christian Brauner <brauner@...nel.org>
To: David Woodhouse <dwmw2@...radead.org>,
	Ilya Denisyev <dev@...cl.ru>
Cc: Christian Brauner <brauner@...nel.org>,
	Richard Weinberger <richard@....at>,
	Zhihao Cheng <chengzhihao1@...wei.com>,
	Fabian Frederick <fabf@...net.be>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Wedson Almeida Filho <walmeida@...rosoft.com>,
	KaiGai Kohei <kaigai@...jp.nec.com>,
	linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	lvc-project@...uxtesting.org
Subject: Re: [PATCH] jffs2: prevent xattr node from overflowing the eraseblock

On Fri, 12 Apr 2024 18:53:54 +0300, Ilya Denisyev wrote:
> Add a check to make sure that the requested xattr node size is no larger
> than the eraseblock minus the cleanmarker.
> 
> Unlike the usual inode nodes, the xattr nodes aren't split into parts
> and spread across multiple eraseblocks, which means that a xattr node
> must not occupy more than one eraseblock. If the requested xattr value is
> too large, the xattr node can spill onto the next eraseblock, overwriting
> the nodes and causing errors such as:
> 
> [...]

I have to say that the rick-roll of your domain doesn't inspire a lot of
confidence though...

Applied to the vfs.misc branch of the vfs/vfs.git tree.
Patches in the vfs.misc branch should appear in linux-next soon.

Please report any outstanding bugs that were missed during review in a
new review to the original patch series allowing us to drop it.

It's encouraged to provide Acked-bys and Reviewed-bys even though the
patch has now been applied. If possible patch trailers will be updated.

Note that commit hashes shown below are subject to change due to rebase,
trailer updates or similar. If in doubt, please check the listed branch.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
branch: vfs.misc

[1/1] jffs2: prevent xattr node from overflowing the eraseblock
      https://git.kernel.org/vfs/vfs/c/c6854e5a267c