linux-kernel - Re: [PATCH v2] mm/memory_hotplug: prevent accessing by index=-1

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Message-ID: <ZmK4HcX_mLwTW6hU@localhost.localdomain>
Date: Fri, 7 Jun 2024 09:34:53 +0200
From: Oscar Salvador <osalvador@...e.com>
To: Anastasia Belova <abelova@...ralinux.ru>
Cc: David Hildenbrand <david@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, lvc-project@...uxtesting.org
Subject: Re: [PATCH v2] mm/memory_hotplug: prevent accessing by index=-1

On Thu, Jun 06, 2024 at 11:06:59AM +0300, Anastasia Belova wrote:
> nid may be equal to NUMA_NO_NODE=-1. Prevent accessing node_data
> array by invalid index with check for nid.
> 
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
> 
> Fixes: e83a437faa62 ("mm/memory_hotplug: introduce "auto-movable" online policy")
> Signed-off-by: Anastasia Belova <abelova@...ralinux.ru>

Acked-by: Oscar Salvador <osalvador@...e.de>

Thanks! 

-- 
Oscar Salvador
SUSE Labs