linux-kernel - Re: [PATCH stable 6.6.y] arm64: kaslr: fix nokaslr cmdline parsing

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Message-ID: <2025060409-fidgeting-basil-abf7@gregkh>
Date: Wed, 4 Jun 2025 14:38:19 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Chen Ridong <chenridong@...weicloud.com>
Cc: catalin.marinas@....com, will@...nel.org, ardb@...nel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org, lujialin4@...wei.com, chenridong@...wei.com
Subject: Re: [PATCH stable 6.6.y] arm64: kaslr: fix nokaslr cmdline parsing

On Tue, Jun 03, 2025 at 12:52:33PM +0000, Chen Ridong wrote:
> From: Chen Ridong <chenridong@...wei.com>
> 
> Currently, when the command line contains "nokaslrxxx", it was incorrectly
> treated as a request to disable KASLR virtual memory. However, the behavior
> is different from physical address handling.
> 
> This issue exists before the commit af73b9a2dd39 ("arm64: kaslr: Use
> feature override instead of parsing the cmdline again"). This patch fixes
> the parsing logic for the 'nokaslr' command line argument. Only the exact
> strings, 'nokaslr', will disable KASLR. Other inputs such as 'xxnokaslr',
> 'xxnokaslrxx', or 'xxnokaslr=xx' will not disable KASLR.
> 
> Fixes: f80fb3a3d508 ("arm64: add support for kernel ASLR")
> Cc: stable@...r.kernel.org # <= v6.6
> Signed-off-by: Chen Ridong <chenridong@...wei.com>
> ---
>  arch/arm64/kernel/pi/kaslr_early.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>