linux-hardening - Re: [REGRESSION] bpf verifier slowdown due to vrealloc() change since 6.15-rc6

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Message-ID: <e3eca3902ed9a68c5732d1be5792be9cda3471ed.camel@gmail.com>
Date: Thu, 15 May 2025 11:50:42 -0700
From: Eduard Zingerman <eddyz87@...il.com>
To: Kees Cook <kees@...nel.org>, Andrii Nakryiko <andrii.nakryiko@...il.com>
Cc: Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>, Shung-Hsi Yu	
 <shung-hsi.yu@...e.com>, bpf@...r.kernel.org, linux-mm@...ck.org, Andrii
 Nakryiko	 <andrii@...nel.org>, Ihor Solodrai <ihor.solodrai@...ux.dev>,
 Andrew Morton	 <akpm@...ux-foundation.org>, Michal Hocko <mhocko@...e.com>,
 Vlastimil Babka	 <vbabka@...e.cz>, Uladzislau Rezki <urezki@...il.com>, 
	linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org, 
	regressions@...ts.linux.dev, Greg Kroah-Hartman
 <gregkh@...uxfoundation.org>,  Alexei Starovoitov	 <ast@...nel.org>, Daniel
 Borkmann <daniel@...earbox.net>
Subject: Re: [REGRESSION] bpf verifier slowdown due to vrealloc() change
 since 6.15-rc6

On Thu, 2025-05-15 at 11:24 -0700, Kees Cook wrote:

[...]

> Linux ToT fails to build, -next fails to build. v6.14.6 fails build,
> each in different ways. :(

I posted recipe [1] some time ago.
Checked it right now, everything worked w/o modifications.
Can be used as a baseline for build environment.

[1] https://lore.kernel.org/bpf/62b54401510477eebdb6e1272ba4308ee121c215.camel@gmail.com/

[...]