linux-kernel - Re: [PATCH bpf-next v5 5/5] bpf: selftests: verifier: Add nullness elision tests

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Message-ID: <00d01559793cb22a323ff8e800e1ed6e79163e57.camel@gmail.com>
Date: Fri, 13 Dec 2024 22:17:56 -0800
From: Eduard Zingerman <eddyz87@...il.com>
To: Daniel Xu <dxu@...uu.xyz>, andrii@...nel.org, ast@...nel.org, 
	shuah@...nel.org, daniel@...earbox.net
Cc: mykolal@...com, martin.lau@...ux.dev, song@...nel.org, 
	yonghong.song@...ux.dev, john.fastabend@...il.com, kpsingh@...nel.org, 
	sdf@...ichev.me, haoluo@...gle.com, jolsa@...nel.org, bpf@...r.kernel.org, 
	linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org, 
	netdev@...r.kernel.org
Subject: Re: [PATCH bpf-next v5 5/5] bpf: selftests: verifier: Add nullness
 elision tests

On Thu, 2024-12-12 at 16:22 -0700, Daniel Xu wrote:
> Test that nullness elision works for common use cases. For example, we
> want to check that both full and subreg stack slots are recognized. As
> well as when there's both const and non-const values of R2 leading up to
> a lookup. And obviously some bound checks.
> 
> Signed-off-by: Daniel Xu <dxu@...uu.xyz>
> ---

Daniel,

since there would be a respin of this patch-set,
maybe consider using plain C for some of the tests?

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