Re: [PATCH] mm/mprotect: Fix maple tree start address in do_mprotect_pkey()

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To: Liam Howlett <liam.howlett@xxxxxxxxxx>
Subject: Re: [PATCH] mm/mprotect: Fix maple tree start address in do_mprotect_pkey()
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Date: Thu, 25 Aug 2022 18:06:14 -0700
Cc: "maple-tree@xxxxxxxxxxxxxxxxxxx" <maple-tree@xxxxxxxxxxxxxxxxxxx>, "linux-mm@xxxxxxxxx" <linux-mm@xxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>, Linux Next Mailing List <linux-next@xxxxxxxxxxxxxxx>, Mark Brown <broonie@xxxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>
In-reply-to: <20220825202939.3041660-1-Liam.Howlett@oracle.com>
References: <20220825202939.3041660-1-Liam.Howlett@oracle.com>

On Thu, 25 Aug 2022 20:30:24 +0000 Liam Howlett <liam.howlett@xxxxxxxxxx> wrote:

> Use the untagged_addr() instead of the address passed into the function.

What are the runtime effects of this fix?

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  - From: Liam Howlett

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