From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754516Ab2CEGjt (ORCPT ); Mon, 5 Mar 2012 01:39:49 -0500 Received: from zeniv.linux.org.uk ([195.92.253.2]:57916 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752000Ab2CEGjs (ORCPT ); Mon, 5 Mar 2012 01:39:48 -0500 Date: Mon, 5 Mar 2012 06:39:47 +0000 From: Al Viro To: Linus Torvalds Cc: linux-kernel@vger.kernel.org Subject: [PATCH 2/3] VM_GROWS{UP,DOWN} shouldn't be set on shmem VMAs Message-ID: <20120305063947.GJ23916@ZenIV.linux.org.uk> References: <20120305063707.GH23916@ZenIV.linux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120305063707.GH23916@ZenIV.linux.org.uk> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Al Viro --- mm/mmap.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/mm/mmap.c b/mm/mmap.c index 3f758c7..22e1a0b 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1293,6 +1293,8 @@ munmap_back: pgoff = vma->vm_pgoff; vm_flags = vma->vm_flags; } else if (vm_flags & VM_SHARED) { + if (unlikely(vm_flags & (VM_GROWSDOWN|VM_GROWSUP))) + goto free_vma; error = shmem_zero_setup(vma); if (error) goto free_vma; -- 1.7.2.5