linux-kernel - Re: Kernel 6.4-rc1 ARM boot fails

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Date:   Sun, 14 May 2023 22:13:06 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Linux regressions mailing list <regressions@...ts.linux.dev>
Cc:     Colin Foster <colin.foster@...advantage.com>,
        Ard Biesheuvel <ardb@...nel.org>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Subject: Re: Kernel 6.4-rc1 ARM boot fails

On Sun, May 14, 2023 at 3:15 PM Linux regression tracking #adding
(Thorsten Leemhuis) <regressions@...mhuis.info> wrote:

> This isn't a regression? This issue or a fix for it are already
> discussed somewhere else? It was fixed already?

It was fixed already.

> You want to clarify when
> the regression started to happen? Or point out I got the title or
> something else totally wrong? Then just reply and tell me -- ideally
> while also telling regzbot about it, as explained by the page listed in
> the footer of this mail.
>
> Developers: When fixing the issue, remember to add 'Link:' tags pointing
> to the report (the parent of this mail). See page linked in footer for
> details.

Syzbot also ran into this regression:
https://lore.kernel.org/all/000000000000da2a8505fb71d81b@google.com/

Anything using FP instructions in userspace init will crash like that,
I happened to use softfloat in all my userspaces and didn't face it.

Yours,
Linus Walleij