From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Zhao Hongjiang , Linus Torvalds Subject: [ 01/34] aio: fix possible invalid memory access when DEBUG is enabled Date: Mon, 29 Apr 2013 12:02:08 -0700 Message-Id: <20130429184701.025730758@linuxfoundation.org> In-Reply-To: <20130429184700.845644077@linuxfoundation.org> References: <20130429184700.845644077@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.4-stable 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 Signed-off-by: Greg Kroah-Hartman --- fs/aio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/aio.c +++ b/fs/aio.c @@ -1094,9 +1094,9 @@ static int aio_read_evt(struct kioctx *i spin_unlock(&info->ring_lock); out: - kunmap_atomic(ring); dprintk("leaving aio_read_evt: %d h%lu t%lu\n", ret, (unsigned long)ring->head, (unsigned long)ring->tail); + kunmap_atomic(ring); return ret; }