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Date:   Fri, 10 Feb 2023 13:59:02 -0800
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Ira Weiny <ira.weiny@intel.com>
Cc:     Sumit Garg <sumit.garg@linaro.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        Christoph Hellwig <hch@lst.de>, linux-kernel@vger.kernel.org,
        op-tee@lists.trustedfirmware.org, linux-mm@kvack.org,
        Jens Wiklander <jens.wiklander@linaro.org>,
        "Fabio M. De Francesco" <fmdefrancesco@gmail.com>,
        John Hubbard <jhubbard@nvidia.com>,
        Matthew Wilcox <willy@infradead.org>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH v2 1/4] highmem: Enhance is_kmap_addr() to check
 kmap_local_page() mappings
Message-Id: <20230210135902.343f6c40001f1f2e10cedd93@linux-foundation.org>
In-Reply-To: <20230203-get_kernel_pages-v2-1-f1dc4af273f1@intel.com>
References: <20230203-get_kernel_pages-v2-0-f1dc4af273f1@intel.com>
        <20230203-get_kernel_pages-v2-1-f1dc4af273f1@intel.com>
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On Fri, 03 Feb 2023 20:06:32 -0800 Ira Weiny <ira.weiny@intel.com> wrote:

> is_kmap_addr() is only looking at the kmap() address range which may
> cause check_heap_object() to miss checking an overflow on a
> kmap_local_page() page.
> 
> Add a check for the kmap_local_page() address range to is_kmap_addr().

Acked-by: Andrew Morton <akpm@linux-foudation.org>