From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753825AbbL2VgB (ORCPT ); Tue, 29 Dec 2015 16:36:01 -0500 Received: from mail-yk0-f195.google.com ([209.85.160.195]:35737 "EHLO mail-yk0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752444AbbL2Vf7 (ORCPT ); Tue, 29 Dec 2015 16:35:59 -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 Date: Tue, 29 Dec 2015 16:38:46 -0500 Message-Id: <1451425126-26958-1-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 might be happened. Signed-off-by: Insu Yun --- drivers/isdn/hardware/mISDN/hfcsusb.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/isdn/hardware/mISDN/hfcsusb.c b/drivers/isdn/hardware/mISDN/hfcsusb.c index 114f3bc..15164e9 100644 --- a/drivers/isdn/hardware/mISDN/hfcsusb.c +++ b/drivers/isdn/hardware/mISDN/hfcsusb.c @@ -264,6 +264,9 @@ hfcsusb_ph_info(struct hfcsusb *hw) phi = kzalloc(sizeof(struct ph_info) + dch->dev.nrbchan * sizeof(struct ph_info_ch), GFP_ATOMIC); + if (!phi) + return; + phi->dch.ch.protocol = hw->protocol; phi->dch.ch.Flags = dch->Flags; phi->dch.state = dch->state; -- 1.9.1