From patchwork Sun Jun 12 21:32:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 12878848 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 24755C43334 for ; Sun, 12 Jun 2022 21:32:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236298AbiFLVcr (ORCPT ); Sun, 12 Jun 2022 17:32:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50182 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236375AbiFLVcn (ORCPT ); Sun, 12 Jun 2022 17:32:43 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 844229FFD; Sun, 12 Jun 2022 14:32:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:In-Reply-To:References; bh=v4mIWqTNLi/H6cmlkOhqCaPgNun/BIW7dc3RoGC1nCY=; b=RCB5aj0M0GTxq97GmTfmw83ojw 6Lz0+yDJJVhmt3dLRuQcUvAeQI0hjWuSjpff2j//5DuETvlCYUQNTjVC7GKOLZcY96yNhWKXFKjKr DNvkjqt7GtQXUS3s8qhb1hqvDShj56YIdu6eEfQ6D0KkCOteF4ZqmEH3bSNyP6SmQPk+QahDv1N3o 84o8/lp4NngLD7yLlh7Lgn2Vmc+eNN0Wpfg6z7zyON1RrlZMMWBl+PqAyHHd77AgWykWepvY9Sl/F +QlPO0Mc0maVzAY9VXdlpUW2m8lzQMEwxQ5TOQj3LrQnRSxdzzGS12ueggK/EncIqqFrNtPg8R+xI 0YRAnZaw==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1o0VC9-00GHpu-A8; Sun, 12 Jun 2022 21:32:29 +0000 From: "Matthew Wilcox (Oracle)" To: Kees Cook Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, Uladzislau Rezki , Zorro Lang , linux-xfs@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [PATCH 0/3] Fixes for usercopy Date: Sun, 12 Jun 2022 22:32:24 +0100 Message-Id: <20220612213227.3881769-1-willy@infradead.org> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org Kees, I'm hoping you'll take these through your tree. I think they're all reasonable fixes to go into 5.19. The first one is essential; it fixes two different bugs that people have hit. Matthew Wilcox (Oracle) (3): usercopy: Handle vm_map_ram() areas usercopy: Cast pointer to an integer once usercopy: Make usercopy resilient against ridiculously large copies include/linux/vmalloc.h | 1 + mm/usercopy.c | 24 +++++++++++++----------- mm/vmalloc.c | 2 +- 3 files changed, 15 insertions(+), 12 deletions(-)