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From: patchwork-bot+linux-riscv@kernel.org
To: Lance Yang <ioworker0@gmail.com>
Cc: linux-riscv@lists.infradead.org, akpm@linux-foundation.org,
	david@redhat.com, 21cnbao@gmail.com,
	baolin.wang@linux.alibaba.com, chrisl@kernel.org,
	kasong@tencent.com, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	lorenzo.stoakes@oracle.com, ryan.roberts@arm.com,
	v-songbaohua@oppo.com, x86@kernel.org,
	huang.ying.caritas@gmail.com, zhengtangquan@oppo.com,
	riel@surriel.com, Liam.Howlett@oracle.com, vbabka@suse.cz,
	harry.yoo@oracle.com, mingzhe.yang@ly.com,
	stable@vger.kernel.org, baohua@kernel.org, lance.yang@linux.dev
Subject: Re: [PATCH v4 1/1] mm/rmap: fix potential out-of-bounds page table access during batched unmap
Date: Wed, 16 Jul 2025 15:21:44 +0000	[thread overview]
Message-ID: <175267930477.1224517.13373842337541537594.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20250701143100.6970-1-lance.yang@linux.dev>

Hello:

This patch was applied to riscv/linux.git (fixes)
by Andrew Morton <akpm@linux-foundation.org>:

On Tue,  1 Jul 2025 22:31:00 +0800 you wrote:
> From: Lance Yang <lance.yang@linux.dev>
> 
> As pointed out by David[1], the batched unmap logic in try_to_unmap_one()
> may read past the end of a PTE table when a large folio's PTE mappings
> are not fully contained within a single page table.
> 
> While this scenario might be rare, an issue triggerable from userspace must
> be fixed regardless of its likelihood. This patch fixes the out-of-bounds
> access by refactoring the logic into a new helper, folio_unmap_pte_batch().
> 
> [...]

Here is the summary with links:
  - [v4,1/1] mm/rmap: fix potential out-of-bounds page table access during batched unmap
    https://git.kernel.org/riscv/c/ddd05742b45b

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html




WARNING: multiple messages have this Message-ID (diff)
From: patchwork-bot+linux-riscv@kernel.org
To: Lance Yang <ioworker0@gmail.com>
Cc: linux-riscv@lists.infradead.org, akpm@linux-foundation.org,
	david@redhat.com, 21cnbao@gmail.com,
	baolin.wang@linux.alibaba.com, chrisl@kernel.org,
	kasong@tencent.com, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	lorenzo.stoakes@oracle.com, ryan.roberts@arm.com,
	v-songbaohua@oppo.com, x86@kernel.org,
	huang.ying.caritas@gmail.com, zhengtangquan@oppo.com,
	riel@surriel.com, Liam.Howlett@oracle.com, vbabka@suse.cz,
	harry.yoo@oracle.com, mingzhe.yang@ly.com,
	stable@vger.kernel.org, baohua@kernel.org, lance.yang@linux.dev
Subject: Re: [PATCH v4 1/1] mm/rmap: fix potential out-of-bounds page table access during batched unmap
Date: Wed, 16 Jul 2025 15:21:44 +0000	[thread overview]
Message-ID: <175267930477.1224517.13373842337541537594.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20250701143100.6970-1-lance.yang@linux.dev>

Hello:

This patch was applied to riscv/linux.git (fixes)
by Andrew Morton <akpm@linux-foundation.org>:

On Tue,  1 Jul 2025 22:31:00 +0800 you wrote:
> From: Lance Yang <lance.yang@linux.dev>
> 
> As pointed out by David[1], the batched unmap logic in try_to_unmap_one()
> may read past the end of a PTE table when a large folio's PTE mappings
> are not fully contained within a single page table.
> 
> While this scenario might be rare, an issue triggerable from userspace must
> be fixed regardless of its likelihood. This patch fixes the out-of-bounds
> access by refactoring the logic into a new helper, folio_unmap_pte_batch().
> 
> [...]

Here is the summary with links:
  - [v4,1/1] mm/rmap: fix potential out-of-bounds page table access during batched unmap
    https://git.kernel.org/riscv/c/ddd05742b45b

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html



_______________________________________________
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linux-riscv@lists.infradead.org
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  parent reply	other threads:[~2025-07-16 15:26 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-01 14:31 [PATCH v4 1/1] mm/rmap: fix potential out-of-bounds page table access during batched unmap Lance Yang
2025-07-01 14:31 ` Lance Yang
2025-07-01 21:17 ` Andrew Morton
2025-07-01 21:17   ` Andrew Morton
2025-07-02  1:29   ` Lance Yang
2025-07-02  1:29     ` Lance Yang
2025-07-07  5:40 ` Harry Yoo
2025-07-07  5:40   ` Harry Yoo
2025-07-07  9:13   ` Lance Yang
2025-07-07  9:13     ` Lance Yang
2025-07-07 15:40   ` Barry Song
2025-07-07 15:40     ` Barry Song
2025-07-08  8:19     ` Harry Yoo
2025-07-08  8:19       ` Harry Yoo
2025-07-16 15:21 ` patchwork-bot+linux-riscv [this message]
2025-07-16 15:21   ` patchwork-bot+linux-riscv

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