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Date: Mon, 27 Nov 2023 13:43:57 +0000
From: Greg Kroah-Hartman <>
To: Kees Cook <>
Cc: Tejun Heo <>, Azeem Shaikh <>,
	Zefan Li <>,
	Johannes Weiner <>,
	Waiman Long <>,
	Steven Rostedt <>,
	Masami Hiramatsu <>,,,,,
Subject: Re: [PATCH 0/3] kernfs: Convert from strlcpy() to strscpy()

On Thu, Nov 16, 2023 at 11:21:22AM -0800, Kees Cook wrote:
> Hi,
> One of the last users of strlcpy() is kernfs, which has some complex
> calling hierarchies that needed to be carefully examined. This series
> refactors the strlcpy() calls into strscpy() calls, and bubbles up all
> changes in return value checking for callers.

Why not work instead to convert kernfs (and by proxy cgroups) to use the
"safe" string functions based on seq_file?  This should be a simpler
patch series to review, and implement on a per-function basis, and then
we would not have any string functions in kernfs anymore.


greg k-h

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