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Thu, 12 Mar 2026 12:51:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773319882; bh=1kpMZraSaSMBgHci+UWZJQCGccw/Ih5urfcrHjXWRuo=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=Zccl76K23ZyjOTqBoRuG3h640FWnMaYDV4YXH6pFpe8fOT1jSDLWMEzuUmYOir+ic B+atD0jT7wx4HOMNfkvQmgdtgrUzl776vQhDd8MAJOkpUmo2pLQZYusbS6lqptRJG2 6o4xAmYmITc+e8ku774J8YwlBWsWG83O9LqhJlaf6t47Gfewydo34zibHjXoM79Tjz EWzZsE5aNBvRWUzwVBkVoFpZ/UIemoy/UHwvGzsly8K0py61/DH1WjW2LBM3u/+Lue IiTXkuftqxocsLKfplXBeYu8/+O6aY5xRsoFGNwpmeHEHOLRzR6ATRB9oJ0HJjOygx RKEM5XpZk9fRQ== Message-ID: <48274386-34b7-4a4e-b924-918b8813a281@kernel.org> Date: Thu, 12 Mar 2026 13:51:18 +0100 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 11/13] selftests/mm: fix double increment in linked list cleanup in compaction_test To: Sayali Patil , Andrew Morton , Shuah Khan , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Ritesh Harjani Cc: Zi Yan , Michal Hocko , Oscar Salvador , Lorenzo Stoakes , Dev Jain , Liam.Howlett@oracle.com, linuxppc-dev@lists.ozlabs.org References: <27390ade4251d1f7f6b846bd5836fa79dbf285df.1773305678.git.sayalip@linux.ibm.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 3/12/26 13:25, Sayali Patil wrote: > The cleanup loop of allocated memory currently uses: > > for (entry = list; entry != NULL; entry = entry->next) { > munmap(entry->map, MAP_SIZE); > if (!entry->next) > break; > entry = entry->next; > } > > The inner entry = entry->next causes the loop to skip every > other node, resulting in only half of the mapped regions being > unmapped. > > Remove the redundant increment to ensure every entry is visited > and unmapped during cleanup. > > Fixes: bd67d5c15cc1 ("Test compaction of mlocked memory") > Reviewed-by: Zi Yan > Signed-off-by: Sayali Patil Acked-by: David Hildenbrand (Arm) -- Cheers, David