From: Will Deacon <will@kernel.org>
To: yf.wang@mediatek.com
Cc: catalin.marinas@arm.com, kernel-team@android.com,
Will Deacon <will@kernel.org>,
linux-arm-kernel@lists.infradead.org, Guangming.Cao@mediatek.com,
linux-mediatek@lists.infradead.org,
iommu@lists.linux-foundation.org, wsd_upstream@mediatek.com,
Libo.Kang@mediatek.com, linux-kernel@vger.kernel.org,
robin.murphy@arm.com, matthias.bgg@gmail.com,
stable@vger.kernel.org
Subject: Re: [PATCH v3] iommu/io-pgtable-arm-v7s: Add error handle for page table allocation failure
Date: Tue, 14 Dec 2021 15:18:17 +0000 [thread overview]
Message-ID: <163949313634.2865984.16870619152235318237.b4-ty@kernel.org> (raw)
In-Reply-To: <20211207113315.29109-1-yf.wang@mediatek.com>
On Tue, 7 Dec 2021 19:33:15 +0800, yf.wang@mediatek.com wrote:
> From: Yunfei Wang <yf.wang@mediatek.com>
>
> In __arm_v7s_alloc_table function:
> iommu call kmem_cache_alloc to allocate page table, this function
> allocate memory may fail, when kmem_cache_alloc fails to allocate
> table, call virt_to_phys will be abnomal and return unexpected phys
> and goto out_free, then call kmem_cache_free to release table will
> trigger KE, __get_free_pages and free_pages have similar problem,
> so add error handle for page table allocation failure.
>
> [...]
Applied to will (for-joerg/arm-smmu/updates), thanks!
[1/1] iommu/io-pgtable-arm-v7s: Add error handle for page table allocation failure
https://git.kernel.org/will/c/a556cfe4cabc
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
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prev parent reply other threads:[~2021-12-14 15:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20211207024723.25751-1-yf.wang@mediatek.com>
2021-12-07 9:48 ` [PATCH] iommu/io-pgtable-arm-v7s: Add error handle for page table allocation failure Will Deacon
[not found] ` <20211207113315.29109-1-yf.wang@mediatek.com>
2021-12-07 11:42 ` [PATCH v3] " Robin Murphy
2021-12-14 15:18 ` Will Deacon [this message]
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