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Date: Fri, 3 Jul 2026 09:26:28 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Vivian Wang <wangruikang@iscas.ac.cn>
Cc: stable@vger.kernel.org, patches@lists.linux.dev,
	Yanko Kaneti <yaneti@declera.com>, Paul Walmsley <pjw@kernel.org>
Subject: Re: [PATCH 7.1 097/120] riscv: kfence: Call mark_new_valid_map() for
 kfence_unprotect()
Message-ID: <2026070321-manhunt-sleet-c3fb@gregkh>
References: <20260702155112.964534952@linuxfoundation.org>
 <20260702155114.965608834@linuxfoundation.org>
 <6c5c0723-66c6-4f9f-8021-2562efc95c6e@iscas.ac.cn>
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In-Reply-To: <6c5c0723-66c6-4f9f-8021-2562efc95c6e@iscas.ac.cn>

On Fri, Jul 03, 2026 at 01:05:30PM +0800, Vivian Wang wrote:
> On 7/3/26 00:21, Greg Kroah-Hartman wrote:
> 
> > 7.1-stable review patch.  If anyone has any objections, please let me know.
> >
> > ------------------
> >
> > From: Vivian Wang <wangruikang@iscas.ac.cn>
> >
> > commit 8d6c8c40e733b3fcaf92fed0a078bba2f6941a3b upstream.
> > [...]
> >
> > --- a/arch/riscv/include/asm/kfence.h
> > +++ b/arch/riscv/include/asm/kfence.h
> >
> > [...]
> >
> > -	if (protect)
> > +	if (protect) {
> >  		set_pte(pte, __pte(pte_val(ptep_get(pte)) & ~_PAGE_PRESENT));
> > -	else
> > +	} else {
> >  		set_pte(pte, __pte(pte_val(ptep_get(pte)) | _PAGE_PRESENT));
> > +		mark_new_valid_map();
> 
> Please also backport this commit's parent, the introduction of
> mark_new_valid_map():
> 
>     9ee25d0a70ff4494b4e1d266b962d0a574ef318a ("riscv: mm: Extract helper mark_new_valid_map()")
> 
> before this patch.
> 
> IIUC this is needed on 6.12.y, 6.18.y, 7.1.y.

Now fixed up, thanks!

greg k-h