linux-kernel - Re: [PATCH] [PATCH v4] arm64/mm: avoid fixmap race condition when create pud mapping

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Message-Id: <164493953489.1197740.9545575140952933000.b4-ty@kernel.org>
Date:   Tue, 15 Feb 2022 23:18:30 +0000
From:   Will Deacon <will@...nel.org>
To:     david@...hat.com, akpm@...ux-foundation.org,
        Jianyong Wu <jianyong.wu@....com>, anshuman.khandual@....com,
        ardb@...nel.org, catalin.marinas@....com
Cc:     kernel-team@...roid.com, Will Deacon <will@...nel.org>, nd@....com,
        justin.he@....com, gshan@...hat.com, quic_qiancai@...cinc.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [PATCH v4] arm64/mm: avoid fixmap race condition when create pud mapping

On Tue, 1 Feb 2022 19:44:00 +0800, Jianyong Wu wrote:
> The 'fixmap' is a global resource and is used recursively by
> create pud mapping(), leading to a potential race condition in the
> presence of a concurrent call to alloc_init_pud():
> 
> kernel_init thread                          virtio-mem workqueue thread
> ==================                          ===========================
> 
> [...]

Applied to arm64 (for-next/mm), thanks!

[1/1] arm64/mm: avoid fixmap race condition when create pud mapping
      https://git.kernel.org/arm64/c/ee017ee35350

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev