linux-kernel - Re: [PATCH v2] arm64: mm: Fix CFI failure due to kpti_ng_pgd

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Message-ID: <175655035973.1114907.7025015988406384082.b4-ty@arm.com>
Date: Sat, 30 Aug 2025 11:39:33 +0100
From: Catalin Marinas <catalin.marinas@....com>
To: Kevin Brodsky <kevin.brodsky@....com>,
	Kees Cook <kees@...nel.org>
Cc: Will Deacon <will@...nel.org>,
	Ard Biesheuvel <ardb@...nel.org>,
	Ryan Roberts <ryan.roberts@....com>,
	Mark Rutland <mark.rutland@....com>,
	Anshuman Khandual <anshuman.khandual@....com>,
	Oliver Upton <oliver.upton@...ux.dev>,
	Yue Haibing <yuehaibing@...wei.com>,
	Marc Zyngier <maz@...nel.org>,
	Mark Brown <broonie@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-arm-kernel@...ts.infradead.org,
	Joey Gouly <joey.gouly@....com>,
	Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>,
	Yeoreum Yun <yeoreum.yun@....com>,
	James Morse <james.morse@....com>,
	Hardevsinh Palaniya <hardevsinh.palaniya@...iconsignals.io>,
	David Hildenbrand <david@...hat.com>,
	Zhenhua Huang <quic_zhenhuah@...cinc.com>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	Dev Jain <dev.jain@....com>,
	Yicong Yang <yangyicong@...ilicon.com>,
	linux-kernel@...r.kernel.org,
	linux-hardening@...r.kernel.org
Subject: Re: [PATCH v2] arm64: mm: Fix CFI failure due to kpti_ng_pgd_alloc function signature

On Fri, 29 Aug 2025 12:07:25 -0700, Kees Cook wrote:
> Seen during KPTI initialization:
> 
>   CFI failure at create_kpti_ng_temp_pgd+0x124/0xce8 (target: kpti_ng_pgd_alloc+0x0/0x14; expected type: 0xd61b88b6)
> 
> The call site is alloc_init_pud() at arch/arm64/mm/mmu.c:
> 
>   pud_phys = pgtable_alloc(TABLE_PUD);
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/1] arm64: mm: Fix CFI failure due to kpti_ng_pgd_alloc function signature
      https://git.kernel.org/arm64/c/ceca927c86e6

I added the acks from v1 directly as there's no change.

-- 
Catalin