linux-kernel - Re: [PATCH v1] arm64: tlb: fix the TTL value of tlb_get

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Message-Id: <162444629282.759882.14655008602043376684.b4-ty@kernel.org>
Date:   Wed, 23 Jun 2021 15:00:18 +0100
From:   Will Deacon <will@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>, aneesh.kumar@...ux.ibm.com,
        Catalin Marinas <catalin.marinas@....com>,
        Marc Zyngier <maz@...nel.org>, steven.price@....com,
        Zhenyu Ye <yezhenyu2@...wei.com>
Cc:     kernel-team@...roid.com, Will Deacon <will@...nel.org>,
        liushixin2@...wei.com, Xiexiangyou <xiexiangyou@...wei.com>,
        linux-arm-kernel@...ts.infradead.org,
        huyaqin <huyaqin1@...wei.com>, linux-mm@...ck.org,
        linux-arch@...r.kernel.org, zhurui3@...wei.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] arm64: tlb: fix the TTL value of tlb_get_level

On Wed, 23 Jun 2021 15:05:22 +0800, Zhenyu Ye wrote:
> The TTL field indicates the level of page table walk holding the *leaf*
> entry for the address being invalidated. But currently, the TTL field
> may be set to an incorrent value in the following stack:
> 
> pte_free_tlb
>     __pte_free_tlb
>         tlb_remove_table
>             tlb_table_invalidate
>                 tlb_flush_mmu_tlbonly
>                     tlb_flush
> 
> [...]

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

[1/1] arm64: tlb: fix the TTL value of tlb_get_level
      https://git.kernel.org/arm64/c/52218fcd61cb

Cheers,
-- 
Will

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