From patchwork Wed Feb 16 19:50:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 12748945 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8AC7C4332F for ; Wed, 16 Feb 2022 19:42:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238211AbiBPTmu (ORCPT ); Wed, 16 Feb 2022 14:42:50 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:48902 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238210AbiBPTmt (ORCPT ); Wed, 16 Feb 2022 14:42:49 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6656E10EC79; Wed, 16 Feb 2022 11:42:36 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 03F74618C1; Wed, 16 Feb 2022 19:42:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A30B6C004E1; Wed, 16 Feb 2022 19:42:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1645040555; bh=mPG4ycp9gIAGAdoVgn30jUFXPydzNYcnE8hERVvj+sc=; h=Date:From:To:Cc:Subject:From; b=oO8W/fvj177LwkkO8f+l+T4Y/7au1+kjuZi+7nGDXy9F75YXYvzhnIUQGIP2voyq/ WvrN3rwdM7v8ExCaafUSXyAnJMC+w67YAHJ1vrCEf0cKX6WPPt/whC7OUdcHgAgie8 vJGrzvNvD9Q8ZslEK8pnUDqc1vjJm/EGoZTlWhbZsJIOAtDt2oyBe9vajQEz2QzRZz ickD0kNnQVr3wuD+A1NavtcHliUg24N9hmPyYDyl2TKzfmwsFvUB7RjnuUt1gQzKOi Z9ZAgHZ9+rArVxpoo4Bqvhl1Oj4SYrIyGz+XZ6pfFP1ZfhYbmKRezMtkSs02gMHojE SCp7UAlOAAsEg== Date: Wed, 16 Feb 2022 13:50:15 -0600 From: "Gustavo A. R. Silva" To: Luca Coelho , Kalle Valo , "David S. Miller" , Jakub Kicinski Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" , linux-hardening@vger.kernel.org Subject: [PATCH][next] iwlwifi: fw: Replace zero-length arrays with flexible-array members Message-ID: <20220216195015.GA904148@embeddedor> MIME-Version: 1.0 Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays Link: https://github.com/KSPP/linux/issues/78 Signed-off-by: Gustavo A. R. Silva Reviewed-by: Kees Cook Acked-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/fw/api/dbg-tlv.h | 4 ++-- drivers/net/wireless/intel/iwlwifi/fw/api/debug.h | 4 ++-- drivers/net/wireless/intel/iwlwifi/fw/api/filter.h | 2 +- drivers/net/wireless/intel/iwlwifi/fw/api/scan.h | 4 ++-- drivers/net/wireless/intel/iwlwifi/fw/api/sta.h | 2 +- drivers/net/wireless/intel/iwlwifi/fw/api/tdls.h | 2 +- drivers/net/wireless/intel/iwlwifi/fw/error-dump.h | 2 +- drivers/net/wireless/intel/iwlwifi/fw/file.h | 12 ++++++------ 8 files changed, 16 insertions(+), 16 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/dbg-tlv.h b/drivers/net/wireless/intel/iwlwifi/fw/api/dbg-tlv.h index 456b7eaac570..9df7eda3b3e7 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/api/dbg-tlv.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/api/dbg-tlv.h @@ -25,7 +25,7 @@ struct iwl_fw_ini_hcmd { u8 id; u8 group; __le16 reserved; - u8 data[0]; + u8 data[]; } __packed; /* FW_DEBUG_TLV_HCMD_DATA_API_S_VER_1 */ /** @@ -275,7 +275,7 @@ struct iwl_fw_ini_conf_set_tlv { __le32 time_point; __le32 set_type; __le32 addr_offset; - struct iwl_fw_ini_addr_val addr_val[0]; + struct iwl_fw_ini_addr_val addr_val[]; } __packed; /* FW_TLV_DEBUG_CONFIG_SET_API_S_VER_1 */ /** diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/debug.h b/drivers/net/wireless/intel/iwlwifi/fw/api/debug.h index 029ae64bf2b2..e732afc7204d 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/api/debug.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/api/debug.h @@ -234,7 +234,7 @@ struct iwl_mfu_assert_dump_notif { __le16 index_num; __le16 parts_num; __le32 data_size; - __le32 data[0]; + __le32 data[]; } __packed; /* MFU_DUMP_ASSERT_API_S_VER_1 */ /** @@ -270,7 +270,7 @@ struct iwl_mvm_marker { u8 marker_id; __le16 reserved; __le64 timestamp; - __le32 metadata[0]; + __le32 metadata[]; } __packed; /* MARKER_API_S_VER_1 */ /** diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/filter.h b/drivers/net/wireless/intel/iwlwifi/fw/api/filter.h index dd62a63956b3..0783b531f616 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/api/filter.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/api/filter.h @@ -33,7 +33,7 @@ struct iwl_mcast_filter_cmd { u8 pass_all; u8 bssid[6]; u8 reserved[2]; - u8 addr_list[0]; + u8 addr_list[]; } __packed; /* MCAST_FILTERING_CMD_API_S_VER_1 */ #define MAX_BCAST_FILTERS 8 diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h b/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h index 5413087ae909..5543d9cb74c8 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h @@ -1165,7 +1165,7 @@ struct iwl_scan_offload_profiles_query_v1 { u8 resume_while_scanning; u8 self_recovery; __le16 reserved; - struct iwl_scan_offload_profile_match_v1 matches[0]; + struct iwl_scan_offload_profile_match_v1 matches[]; } __packed; /* SCAN_OFFLOAD_PROFILES_QUERY_RSP_S_VER_2 */ /** @@ -1209,7 +1209,7 @@ struct iwl_scan_offload_profiles_query { u8 resume_while_scanning; u8 self_recovery; __le16 reserved; - struct iwl_scan_offload_profile_match matches[0]; + struct iwl_scan_offload_profile_match matches[]; } __packed; /* SCAN_OFFLOAD_PROFILES_QUERY_RSP_S_VER_3 */ /** diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/sta.h b/drivers/net/wireless/intel/iwlwifi/fw/api/sta.h index 5edbe27c0922..d62fed543276 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/api/sta.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/api/sta.h @@ -477,7 +477,7 @@ struct iwl_mvm_wep_key_cmd { u8 decryption_type; u8 flags; u8 reserved; - struct iwl_mvm_wep_key wep_key[0]; + struct iwl_mvm_wep_key wep_key[]; } __packed; /* SEC_CURR_WEP_KEY_CMD_API_S_VER_2 */ /** diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/tdls.h b/drivers/net/wireless/intel/iwlwifi/fw/api/tdls.h index 14d35000abed..893438aadab0 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/api/tdls.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/api/tdls.h @@ -132,7 +132,7 @@ struct iwl_tdls_config_cmd { __le32 pti_req_data_offset; struct iwl_tx_cmd pti_req_tx_cmd; - u8 pti_req_template[0]; + u8 pti_req_template[]; } __packed; /* TDLS_CONFIG_CMD_API_S_VER_1 */ /** diff --git a/drivers/net/wireless/intel/iwlwifi/fw/error-dump.h b/drivers/net/wireless/intel/iwlwifi/fw/error-dump.h index 079fa0023bd8..c62576e442bd 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/error-dump.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/error-dump.h @@ -84,7 +84,7 @@ struct iwl_fw_error_dump_data { struct iwl_fw_error_dump_file { __le32 barker; __le32 file_len; - u8 data[0]; + u8 data[]; } __packed; /** diff --git a/drivers/net/wireless/intel/iwlwifi/fw/file.h b/drivers/net/wireless/intel/iwlwifi/fw/file.h index e4ebda64cd52..e336c254a2ee 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/file.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/file.h @@ -119,7 +119,7 @@ enum iwl_ucode_tlv_type { struct iwl_ucode_tlv { __le32 type; /* see above */ __le32 length; /* not including type/length fields */ - u8 data[0]; + u8 data[]; }; #define IWL_TLV_UCODE_MAGIC 0x0a4c5749 @@ -145,7 +145,7 @@ struct iwl_tlv_ucode_header { * Note that each TLV is padded to a length * that is a multiple of 4 for alignment. */ - u8 data[0]; + u8 data[]; }; /* @@ -631,7 +631,7 @@ struct iwl_fw_dbg_dest_tlv_v1 { __le32 wrap_count; u8 base_shift; u8 end_shift; - struct iwl_fw_dbg_reg_op reg_ops[0]; + struct iwl_fw_dbg_reg_op reg_ops[]; } __packed; /* Mask of the register for defining the LDBG MAC2SMEM buffer SMEM size */ @@ -651,14 +651,14 @@ struct iwl_fw_dbg_dest_tlv { __le32 wrap_count; u8 base_shift; u8 size_shift; - struct iwl_fw_dbg_reg_op reg_ops[0]; + struct iwl_fw_dbg_reg_op reg_ops[]; } __packed; struct iwl_fw_dbg_conf_hcmd { u8 id; u8 reserved; __le16 len; - u8 data[0]; + u8 data[]; } __packed; /** @@ -733,7 +733,7 @@ struct iwl_fw_dbg_trigger_tlv { u8 flags; u8 reserved[5]; - u8 data[0]; + u8 data[]; } __packed; #define FW_DBG_START_FROM_ALIVE 0