linux-hardening - Re: [PATCH v2 4/4] KVM: arm64: Handle UBSAN faults

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Message-ID: <202504301131.E58BEF14@keescook>
Date: Wed, 30 Apr 2025 11:31:12 -0700
From: Kees Cook <kees@...nel.org>
To: Mostafa Saleh <smostafa@...gle.com>
Cc: kvmarm@...ts.linux.dev, kasan-dev@...glegroups.com,
	linux-hardening@...r.kernel.org, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	will@...nel.org, maz@...nel.org, oliver.upton@...ux.dev,
	broonie@...nel.org, catalin.marinas@....com, tglx@...utronix.de,
	mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
	x86@...nel.org, hpa@...or.com, elver@...gle.com,
	andreyknvl@...il.com, ryabinin.a.a@...il.com,
	akpm@...ux-foundation.org, yuzenghui@...wei.com,
	suzuki.poulose@....com, joey.gouly@....com, masahiroy@...nel.org,
	nathan@...nel.org, nicolas.schier@...ux.dev
Subject: Re: [PATCH v2 4/4] KVM: arm64: Handle UBSAN faults

On Wed, Apr 30, 2025 at 04:27:11PM +0000, Mostafa Saleh wrote:
> As now UBSAN can be enabled, handle brk64 exits from UBSAN.
> Re-use the decoding code from the kernel, and panic with
> UBSAN message.
> 
> Signed-off-by: Mostafa Saleh <smostafa@...gle.com>

Looks correct to me.

Reviewed-by: Kees Cook <kees@...nel.org>

-- 
Kees Cook