From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C67A139FEF; Fri, 24 Nov 2023 18:01:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="jF+cbzwY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 52F82C433C7; Fri, 24 Nov 2023 18:01:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700848895; bh=QevucKTsajlNcgpvvNVsT/h5dileO6PDLiR7lUs0M1Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jF+cbzwYBw3jMLnmP3co/OQkN54xww/YffMc/br+UTN419Vaq2JFE6vqo1JlFtLO9 oCZmi3f9C4/3+ewzfB2WNU/BDd/XA3nMOey3s2PscsoTInbBeB+lToLWAOpwy6kU0l erOGGALgWjr0D6HlRSanAprkoFbXdXBqaqXF4I98= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dmitry Antipov , Jeff Johnson , Kalle Valo , Sasha Levin Subject: [PATCH 4.14 07/57] wifi: ath10k: fix clang-specific fortify warning Date: Fri, 24 Nov 2023 17:50:31 +0000 Message-ID: <20231124171930.551362110@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231124171930.281665051@linuxfoundation.org> References: <20231124171930.281665051@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dmitry Antipov [ Upstream commit cb4c132ebfeac5962f7258ffc831caa0c4dada1a ] When compiling with clang 16.0.6 and CONFIG_FORTIFY_SOURCE=y, I've noticed the following (somewhat confusing due to absence of an actual source code location): In file included from drivers/net/wireless/ath/ath10k/debug.c:8: In file included from ./include/linux/module.h:13: In file included from ./include/linux/stat.h:19: In file included from ./include/linux/time.h:60: In file included from ./include/linux/time32.h:13: In file included from ./include/linux/timex.h:67: In file included from ./arch/x86/include/asm/timex.h:5: In file included from ./arch/x86/include/asm/processor.h:23: In file included from ./arch/x86/include/asm/msr.h:11: In file included from ./arch/x86/include/asm/cpumask.h:5: In file included from ./include/linux/cpumask.h:12: In file included from ./include/linux/bitmap.h:11: In file included from ./include/linux/string.h:254: ./include/linux/fortify-string.h:592:4: warning: call to '__read_overflow2_field' declared with 'warning' attribute: detected read beyond size of field (2nd parameter); maybe use struct_group()? [-Wattribute-warning] __read_overflow2_field(q_size_field, size); The compiler actually complains on 'ath10k_debug_get_et_strings()' where fortification logic inteprets call to 'memcpy()' as an attempt to copy the whole 'ath10k_gstrings_stats' array from it's first member and so issues an overread warning. This warning may be silenced by passing an address of the whole array and not the first member to 'memcpy()'. Signed-off-by: Dmitry Antipov Acked-by: Jeff Johnson Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20230829093652.234537-1-dmantipov@yandex.ru Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath10k/debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c index 22003895f8548..591d0b9c0be3c 100644 --- a/drivers/net/wireless/ath/ath10k/debug.c +++ b/drivers/net/wireless/ath/ath10k/debug.c @@ -1411,7 +1411,7 @@ void ath10k_debug_get_et_strings(struct ieee80211_hw *hw, u32 sset, u8 *data) { if (sset == ETH_SS_STATS) - memcpy(data, *ath10k_gstrings_stats, + memcpy(data, ath10k_gstrings_stats, sizeof(ath10k_gstrings_stats)); } -- 2.42.0