From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 38F60262FF8 for ; Mon, 27 Apr 2026 08:17:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777277851; cv=none; b=FX9XScNgj116D4uX0qzlqAUbZ/4T7f8X05pQwnZwR/6ApgvwnGy1PgYsOQWVC3Ch7a2fzE1PfJNZ1+M6hErDuNs6LXt6xmNU+A+ZMBwS3zuEQXGveNt/9ww2Fc290GYy0uX6mqpNgevJwz9NWrUR3n+Bx112eXmnT5Uliaav0wQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777277851; c=relaxed/simple; bh=rPd+KhIlteN2zT/mdxGUl0xxQxFFeh+yuhfCifYFGBA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=G836ihZP5vUszRcz7VkWUzqL4eNq+1mMu2FoKuBxtxwMgZAEOBwX5uVRH2/iB28jYnfL78mph9QrUEYmJfJbmhwZx/b0Pj3WJXoAfl8XP1KZywDxyPg9sItQ1A9B8OpsDPwawEJtw3N3iaqp8nuJ89IPqz9y/OSg2mm6a56swQY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=p04CC6JP; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="p04CC6JP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 96EDEC19425; Mon, 27 Apr 2026 08:17:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777277850; bh=rPd+KhIlteN2zT/mdxGUl0xxQxFFeh+yuhfCifYFGBA=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=p04CC6JP/xzSEC3zOdL0EwDYEmgMw363TeSzjnWd/o9XfThzdwj4KRD8KtGUh+faW x/nDX+q2btk0TblUtBmJfVM3ZIg8LvbPSoT6D/QK5ybN0V45eYDYpqLOS/S2LA3eSo bK41Vwe9wC9pMYB0UjGSrTMbx5xTlJcqkM4PnUBoVjJ5D92EUiFVq1ak7fqr9ZOh8a ijRyI97++oVuZm5txlTw5muFX6dUiawdBhDdT/Ja/B4yIG0Ysa00j+AeNzC6BzkmzW nKUZ/w/HXqfzwFn6gK4m0r3/TCtKohx9B5BT6EuNjzRlyhcHTR+lQObLiModFNL7IF emDAOmXEWw8uA== Message-ID: <7afd4504-1d2e-429f-ae6e-136414a9d4b8@kernel.org> Date: Mon, 27 Apr 2026 10:17:23 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH] mm/hugetlb: fix resv_map memory leak in __mmap_region error path To: Muchun Song , Mingyu Wang <25181214217@stu.xidian.edu.cn> Cc: Liam.Howlett@oracle.com, akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, ljs@kernel.org, vbabka@kernel.org, jannh@google.com, pfalcato@suse.de, osalvador@suse.de References: <20260425070700.562229-1-25181214217@stu.xidian.edu.cn> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit >> /* >> * We cannot permit the rmap finding this VMA in the time >> * between the VMA being inserted into the VMA tree and the >> diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h >> index a308e2c23b82..9320f6699fa9 100644 >> --- a/include/linux/mm_types.h >> +++ b/include/linux/mm_types.h >> @@ -861,6 +861,8 @@ struct mmap_action { >> * it is not valid to clear the error here. >> */ >> int (*error_hook)(int err); >> + >> + void (*abort_hook)(struct vm_area_desc *desc); > > At least for me, it is not good name to distinguish it from error_hook. > abort_mmap_prepare? I am not sure if it is a good solution, Cc other > MM maintainers as well. > I'm sure Lorenzo will provide feedback here :) -- Cheers, David