linux-kernel - Re: [PATCH 02/10] staging: r8188eu: remove smaller sets of DBG

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <47fcbfb5-ee59-a1ef-781d-83989e26e1aa@gmail.com>
Date:   Tue, 25 Jan 2022 21:17:46 +0300
From:   Pavel Skripkin <paskripkin@...il.com>
To:     Phillip Potter <phil@...lpotter.co.uk>, gregkh@...uxfoundation.org
Cc:     dan.carpenter@...cle.com, Larry.Finger@...inger.net,
        straube.linux@...il.com, martin@...ser.cx,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/10] staging: r8188eu: remove smaller sets of DBG_88E
 calls from core dir

Hi Phillip,

On 1/25/22 01:44, Phillip Potter wrote:
> Remove all DBG_88E calls from the core directory, other than those in
> core/rtw_mlme_ext.c, as this contains over 100 on its own so will be
> done in a separate patch for ease of review. These calls do not conform
> to kernel coding standards and are superfluous. Also restructure where
> appropriate to remove no longer needed code left behind by removal of
> these calls. This will allow the eventual removal of the DBG_88E macro
> itself.
> 
> Signed-off-by: Phillip Potter <phil@...lpotter.co.uk>
> ---

[code snip]

> diff --git a/drivers/staging/r8188eu/core/rtw_ieee80211.c b/drivers/staging/r8188eu/core/rtw_ieee80211.c
> index ad87954bdeb4..62354c3194bd 100644
> --- a/drivers/staging/r8188eu/core/rtw_ieee80211.c
> +++ b/drivers/staging/r8188eu/core/rtw_ieee80211.c
> @@ -653,13 +653,8 @@ static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
>   	/* first 3 bytes in vendor specific information element are the IEEE
>   	 * OUI of the vendor. The following byte is used a vendor specific
>   	 * sub-type. */
> -	if (elen < 4) {
> -		if (show_errors) {
> -			DBG_88E("short vendor specific information element ignored (len=%lu)\n",
> -				(unsigned long)elen);
> -		}
> +	if (elen < 4)
>   		return -1;
> -	}

show_errors seems unused after this change

>   
>   	oui = RTW_GET_BE24(pos);
>   	switch (oui) {
> @@ -674,11 +669,8 @@ static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
>   			elems->wpa_ie_len = elen;
>   			break;
>   		case WME_OUI_TYPE: /* this is a Wi-Fi WME info. element */
> -			if (elen < 5) {
> -				DBG_88E("short WME information element ignored (len=%lu)\n",
> -					(unsigned long)elen);
> +			if (elen < 5)
>   				return -1;
> -			}
>   			switch (pos[4]) {
>   			case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
>   			case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
> @@ -690,8 +682,6 @@ static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
>   				elems->wme_tspec_len = elen;
>   				break;
>   			default:
> -				DBG_88E("unknown WME information element ignored (subtype=%d len=%lu)\n",
> -					pos[4], (unsigned long)elen);
>   				return -1;
>   			}
>   			break;
> @@ -701,8 +691,6 @@ static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
>   			elems->wps_ie_len = elen;
>   			break;
>   		default:
> -			DBG_88E("Unknown Microsoft information element ignored (type=%d len=%lu)\n",
> -				pos[3], (unsigned long)elen);
>   			return -1;
>   		}
>   		break;
> @@ -714,14 +702,10 @@ static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
>   			elems->vendor_ht_cap_len = elen;
>   			break;
>   		default:
> -			DBG_88E("Unknown Broadcom information element ignored (type=%d len=%lu)\n",
> -				pos[3], (unsigned long)elen);
>   			return -1;
>   		}
>   		break;
>   	default:
> -		DBG_88E("unknown vendor specific information element ignored (vendor OUI %02x:%02x:%02x len=%lu)\n",
> -			pos[0], pos[1], pos[2], (unsigned long)elen);
>   		return -1;
>   	}
>   	return 0;
> @@ -752,13 +736,8 @@ enum parse_res rtw_ieee802_11_parse_elems(u8 *start, uint len,
>   		elen = *pos++;
>   		left -= 2;
>   
> -		if (elen > left) {
> -			if (show_errors) {
> -				DBG_88E("IEEE 802.11 element parse failed (id=%d elen=%d left=%lu)\n",
> -					id, elen, (unsigned long)left);
> -			}

same here

> +		if (elen > left)
>   			return ParseFailed;
> -		}
>   
>   		switch (id) {
>   		case WLAN_EID_SSID:
> @@ -839,10 +818,6 @@ enum parse_res rtw_ieee802_11_parse_elems(u8 *start, uint len,
>   			break;
>   		default:
>   			unknown++;
> -			if (!show_errors)
> -				break;
> -			DBG_88E("IEEE 802.11 element parse ignored unknown element (id=%d elen=%d)\n",
> -				id, elen);
>   			break;

and here



With regards,
Pavel Skripkin