From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753911AbbL2Vis (ORCPT ); Tue, 29 Dec 2015 16:38:48 -0500 Received: from mail-yk0-f194.google.com ([209.85.160.194]:34191 "EHLO mail-yk0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751184AbbL2Vip (ORCPT ); Tue, 29 Dec 2015 16:38:45 -0500 From: Insu Yun To: isdn@linux-pingi.de, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: taesoo@gatech.edu, yeongjin.jang@gatech.edu, insu@gatech.edu, changwoo@gatech.edu, Insu Yun Subject: [PATCH] mISDN: correctly handling failed allocation in fsm Date: Tue, 29 Dec 2015 16:41:33 -0500 Message-Id: <1451425293-30262-1-git-send-email-wuninsu@gmail.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since kzalloc can be failed in memory pressure, NULL dereference can be happened. Signed-off-by: Insu Yun --- drivers/isdn/mISDN/fsm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/isdn/mISDN/fsm.c b/drivers/isdn/mISDN/fsm.c index 26477d4..3c3ffb0 100644 --- a/drivers/isdn/mISDN/fsm.c +++ b/drivers/isdn/mISDN/fsm.c @@ -34,6 +34,8 @@ mISDN_FsmNew(struct Fsm *fsm, fsm->jumpmatrix = kzalloc(sizeof(FSMFNPTR) * fsm->state_count * fsm->event_count, GFP_KERNEL); + if (!fsm->jumpmatrix) + return; for (i = 0; i < fncount; i++) if ((fnlist[i].state >= fsm->state_count) || -- 1.9.1