linux-kernel - Re: [PATCH] arm64/mm: Drop redundant BUG_ON(!pgtable

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Message-ID: <20221121180321.GA7645@willie-the-truck>
Date:   Mon, 21 Nov 2022 18:03:22 +0000
From:   Will Deacon <will@...nel.org>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     open list <linux-kernel@...r.kernel.org>,
        lkft-triage@...ts.linaro.org, regressions@...ts.linux.dev,
        Catalin Marinas <catalin.marinas@....com>,
        Mark Rutland <mark.rutland@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Nathan Chancellor <nathan@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Anders Roxell <anders.roxell@...aro.org>
Subject: Re: [PATCH] arm64/mm: Drop redundant BUG_ON(!pgtable_alloc)

On Mon, Nov 21, 2022 at 09:17:18PM +0530, Naresh Kamboju wrote:
> LKFT detected arm64 boot regression on today's Linux next-20221121 tag.
> The Kernel boot log did not show anything on the serial console.
> 
> Anders bisected this problem and found the subject commit is the
> first bad commit.
> 
> # first bad commit: [9ed2b4616d4e846ece2a04cb5007ce1d1bd9e3f3]
>         arm64/mm: Drop redundant BUG_ON(!pgtable_alloc)
> 
> Later it was found this lore link which was already reported [1].
> 
> ref:
> [1] https://lore.kernel.org/all/Y3pS5fdZ3MdLZ00t@dev-arch.thelio-3990X/

Yup, I've queued a revert locally and will push it out this evening.

Cheers,

Will