linux-kernel - Re: [PATCH v2 0/4] KVM: arm64: UBSAN at EL2

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Message-Id: <174661410588.354102.12581614598575589637.b4-ty@kernel.org>
Date: Wed,  7 May 2025 11:35:13 +0100
From: Marc Zyngier <maz@...nel.org>
To: 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,
	Mostafa Saleh <smostafa@...gle.com>
Cc: will@...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,
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	elver@...gle.com,
	andreyknvl@...il.com,
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	suzuki.poulose@....com,
	joey.gouly@....com,
	masahiroy@...nel.org,
	nathan@...nel.org,
	nicolas.schier@...ux.dev
Subject: Re: [PATCH v2 0/4] KVM: arm64: UBSAN at EL2

On Wed, 30 Apr 2025 16:27:07 +0000, Mostafa Saleh wrote:
> Many of the sanitizers the kernel supports are disabled when running
> in EL2 with nvhe/hvhe/proctected modes, some of those are easier
> (and makes more sense) to integrate than others.
> Last year, kCFI support was added in [1]
> 
> This patchset adds support for UBSAN in EL2.
> UBSAN can run in 2 modes:
>   1) “Normal” (CONFIG_UBSAN_TRAP=n): In this mode the compiler will
>   do the UBSAN checks and insert some function calls in case of
>   failures, it can provide more information(ex: what is the value of
>   the out of bound) about the failures through those function arguments,
>   and those functions(implemented in lib/ubsan.c) will print a report with
>   such errors.
> 
> [...]

Applied to next, thanks!

[1/4] arm64: Introduce esr_is_ubsan_brk()
      commit: dc1fd37a7f501731e488c1c6f86b2f591632a4ad
[2/4] ubsan: Remove regs from report_ubsan_failure()
      commit: d683a8561889c1813fe2ad6082769c91e3cb71b3
[3/4] KVM: arm64: Introduce CONFIG_UBSAN_KVM_EL2
      commit: 61b38f7591fb434fce326c1d686a9793c7f418bc
[4/4] KVM: arm64: Handle UBSAN faults
      commit: 446692759b0732ef2d9a93b7e6730aa762ccf0ab

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.