From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933178Ab1BPAuC (ORCPT ); Tue, 15 Feb 2011 19:50:02 -0500 Received: from kroah.org ([198.145.64.141]:45769 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933116Ab1BPAtq (ORCPT ); Tue, 15 Feb 2011 19:49:46 -0500 X-Mailbox-Line: From gregkh@clark.kroah.org Tue Feb 15 16:21:08 2011 Message-Id: <20110216002108.396908052@clark.kroah.org> User-Agent: quilt/0.48-11.2 Date: Tue, 15 Feb 2011 16:21:01 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Dave Anderson , Frederic Weisbecker Subject: [patch 093/176] /proc/kcore: fix seeking In-Reply-To: <20110216002212.GA9246@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2.6.36-stable review patch. If anyone has any objections, please let us know. ------------------ From: Dave Anderson commit ceff1a770933e2ca2bf995b453dade4ec47a9878 upstream. Commit 34aacb2920 ("procfs: Use generic_file_llseek in /proc/kcore") broke seeking on /proc/kcore. This changes it back to use default_llseek in order to restore the original behavior. The problem with generic_file_llseek is that it only allows seeks up to inode->i_sb->s_maxbytes, which is 2GB-1 on procfs, where the memory file offset values in the /proc/kcore PT_LOAD segments may exceed or start beyond that offset value. A similar revert was made for /proc/vmcore. Signed-off-by: Dave Anderson Acked-by: Frederic Weisbecker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- fs/proc/kcore.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -558,7 +558,7 @@ static int open_kcore(struct inode *inod static const struct file_operations proc_kcore_operations = { .read = read_kcore, .open = open_kcore, - .llseek = generic_file_llseek, + .llseek = default_llseek, }; #ifdef CONFIG_MEMORY_HOTPLUG