From: Matthew Wilcox <willy@infradead.org>
To: Jeongjun Park <aha310510@gmail.com>
Cc: akpm@linux-foundation.org, dave@stgolabs.net,
Liam.Howlett@oracle.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] mm/huge_memory: Fix to make vma_adjust_trans_huge() use find_vma() correctly
Date: Thu, 21 Nov 2024 16:02:04 +0000 [thread overview]
Message-ID: <Zz9ZfGy2veK0zGW0@casper.infradead.org> (raw)
In-Reply-To: <20241121124113.66166-1-aha310510@gmail.com>
On Thu, Nov 21, 2024 at 09:41:13PM +0900, Jeongjun Park wrote:
> vma_adjust_trans_huge() uses find_vma() to get the VMA, but find_vma() uses
> the returned pointer without any verification, even though it may return NULL.
> In this case, NULL pointer dereference may occur, so to prevent this,
> vma_adjust_trans_huge() should be fix to verify the return value of find_vma().
I don't think we should change anything here.
prev parent reply other threads:[~2024-11-21 16:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-21 12:41 Jeongjun Park
2024-11-21 13:44 ` David Hildenbrand
2024-11-21 13:50 ` David Hildenbrand
2024-11-21 14:18 ` Jeongjun Park
2024-11-21 15:04 ` David Hildenbrand
2024-11-21 16:02 ` Matthew Wilcox [this message]
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