linux-kernel - Re: REGRESSION: kernel BUG at arch/arm64/kernel/alternative.c:157!

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Message-ID: <20210518084900.GA7412@willie-the-truck>
Date:   Tue, 18 May 2021 09:49:01 +0100
From:   Will Deacon <will@...nel.org>
To:     John Stultz <john.stultz@...aro.org>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Kees Cook <keescook@...omium.org>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        YongQin Liu <yongqin.liu@...aro.org>,
        Amit Pundir <amit.pundir@...aro.org>
Subject: Re: REGRESSION: kernel BUG at arch/arm64/kernel/alternative.c:157!

Hi John,

On Mon, May 17, 2021 at 02:52:59PM -0700, John Stultz wrote:
> With v5.13-rc2, I've been seeing an odd boot regression with the
> DragonBoard 845c:
> 
> Unfortunately, trying to bisect it down (v5.13-rc1 works ok) is giving
> me inconsistent results so far. It feels a bit like maybe some config
> option gets enabled moving forward, and then sticks around when we go
> back.  I'll take another swing at bisecting it later today, but I have
> to move on to some other work right now, so I figured I'd share (with
> folks who better know the recent __apply_alternatives changes) in case
> folks have a better idea:

Please can you try reverting af44068c581c and 0c6c2d3615ef?

Thanks,

Will