linux-kernel - Re: [PATCH AUTOSEL 6.1 08/25] KVM: selftests: Add test for uaccesses to non-existent vgic-v2 CPUIF

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Date: Mon, 13 May 2024 10:20:38 +0200
From: Pavel Machek <pavel@...x.de>
To: Sasha Levin <sashal@...nel.org>
Cc: linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	Oliver Upton <oliver.upton@...ux.dev>,
	Marc Zyngier <maz@...nel.org>, pbonzini@...hat.com,
	shuah@...nel.org, linux-arm-kernel@...ts.infradead.org,
	kvmarm@...ts.linux.dev, kvm@...r.kernel.org,
	linux-kselftest@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 6.1 08/25] KVM: selftests: Add test for uaccesses
 to non-existent vgic-v2 CPUIF

Hi!

> Assert that accesses to a non-existent vgic-v2 CPU interface
> consistently fail across the various KVM device attr ioctls. This also
> serves as a regression test for a bug wherein KVM hits a NULL
> dereference when the CPUID specified in the ioctl is invalid.
> 
> Note that there is no need to print the observed errno, as TEST_ASSERT()
> will take care of it.

I don't think this fixes the bug... and thus we should not need it in
stable.

Best regards,
								Pavel
-- 
DENX Software Engineering GmbH,        Managing Director: Erika Unter
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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