From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:34974 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934584AbeCMPio (ORCPT ); Tue, 13 Mar 2018 11:38:44 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Colin Ian King , Ralf Baechle , linux-mips@linux-mips.org, James Hogan Subject: [PATCH 4.14 079/140] MIPS: ath25: Check for kzalloc allocation failure Date: Tue, 13 Mar 2018 16:24:42 +0100 Message-Id: <20180313152503.444009904@linuxfoundation.org> In-Reply-To: <20180313152458.201155692@linuxfoundation.org> References: <20180313152458.201155692@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Colin Ian King commit 1b22b4b28fd5fbc51855219e3238b3ab81da8466 upstream. Currently there is no null check on a failed allocation of board_data, and hence a null pointer dereference will occurr. Fix this by checking for the out of memory null pointer. Fixes: a7473717483e ("MIPS: ath25: add board configuration detection") Signed-off-by: Colin Ian King Cc: Ralf Baechle Cc: linux-mips@linux-mips.org Cc: # 3.19+ Patchwork: https://patchwork.linux-mips.org/patch/18657/ Signed-off-by: James Hogan Signed-off-by: Greg Kroah-Hartman --- arch/mips/ath25/board.c | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/mips/ath25/board.c +++ b/arch/mips/ath25/board.c @@ -135,6 +135,8 @@ int __init ath25_find_config(phys_addr_t } board_data = kzalloc(BOARD_CONFIG_BUFSZ, GFP_KERNEL); + if (!board_data) + goto error; ath25_board.config = (struct ath25_boarddata *)board_data; memcpy_fromio(board_data, bcfg, 0x100); if (broken_boarddata) {