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Date: Mon, 17 Nov 2025 04:03:50 +0200
From: Konstantin Belousov <kostikbel@gmail.com>
To: Michal Meloun <mmel@freebsd.org>
Cc: Warner Losh <imp@bsdimp.com>,
        "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>,
        FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re: Still seeing Failed assertion: "p[i] == 0" on armv7 buildworld
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On Sun, Nov 16, 2025 at 10:11:15PM +0100, Michal Meloun wrote:
> 
> 
> On 16.11.2025 18:51, Warner Losh wrote:
> > Maybe try main with the following patch. Adrian noticed the TLS
> > mismatch. I don't think it will matter, but TLS thread model stuff
> > always gives me a big headache. If the following fails to apply, just
> > copy the JEMALLOC_TLS_MODEL line from i386 to arm. The default changed
> > elsewhere, but this wasn't updated here.
> > 
> > Warner
> 
> Unfortunately, that doesn't help. I'm out of ideas on how to debug this, all
> of my attempts have failed.
> 
> The problem only occurs when Clang compiles a larger project and is
> intermediate. Attempt to compile the clang generated reproducer is always
> successful.
> It's clear that the parallelism introduced by make plays a significant role.
> But the system never reached an OOM condition before failure.

Is the problem reproducable on armv7 userspace running on arm64 kernel, or only
on native armv7 host?