Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753574Ab3EJOTe (ORCPT ); Fri, 10 May 2013 10:19:34 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:56826 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753245Ab3EJOTc (ORCPT ); Fri, 10 May 2013 10:19:32 -0400 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Linus Torvalds" , "Zhao Hongjiang" Date: Fri, 10 May 2013 14:39:41 +0100 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [002/118] aio: fix possible invalid memory access when DEBUG is enabled In-Reply-To: X-SA-Exim-Connect-IP: 2001:470:1f08:1539:d51a:8785:aa0a:cebe X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1152 Lines: 37 3.2.45-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Zhao Hongjiang commit 91d80a84bbc8f28375cca7e65ec666577b4209ad upstream. dprintk() shouldn't access @ring after it's unmapped. Signed-off-by: Zhao Hongjiang Signed-off-by: Linus Torvalds [bwh: Backported to 3.2: keep the second argument to kunmap_atomic()] Signed-off-by: Ben Hutchings --- fs/aio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/aio.c +++ b/fs/aio.c @@ -1112,9 +1112,9 @@ static int aio_read_evt(struct kioctx *i spin_unlock(&info->ring_lock); out: - kunmap_atomic(ring, KM_USER0); dprintk("leaving aio_read_evt: %d h%lu t%lu\n", ret, (unsigned long)ring->head, (unsigned long)ring->tail); + kunmap_atomic(ring, KM_USER0); return ret; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/