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 318232676E1; Tue, 8 Apr 2025 11:45:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744112724; cv=none; b=p5QaYfdYBZjM3XQ70/nzlsDVOsYWgzCXNqxptNwksxIrjQ5njmsPIvYHWGdn7uJ8z1psmiu3KxaOr8rJcaeHKm4t3ImNT/j+wIkTV8TfR+J2oIVNuxBURm3SOsh/jD6iO467eF0Lcvhp2rkbkc/SGdJshog7TThLutnZA4rOVTE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744112724; c=relaxed/simple; bh=1n15NZyuteYo6ZHQjjZoHqT+JZbbvVeM9zBlUomVJV0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ehHwGocsx4KXmTG9SLlgmveZpcXHpsESJ72taiS3rxhKCmFWjUbQ4rI8uRITQU4SxeEnITcyD1SJjr095Qbq/54dkaBc6qxDK9Mozf/cDSZ595XyEo4TLn4gVhrNEytfCNowE444qbwrzrYNFRIWPPB75SKui7WdFjRhKHQ/Vjo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=zeZYORpv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="zeZYORpv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8486C4CEE5; Tue, 8 Apr 2025 11:45:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1744112724; bh=1n15NZyuteYo6ZHQjjZoHqT+JZbbvVeM9zBlUomVJV0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zeZYORpveksChB3ShD0TNO0nF3hVlFoiZXczhM4y2qPoGgUR/nKGWBT6euepRKBFM w4bhqbjVF1PO4OhVmhL1zLWgXqSIjdDzn+TAlyZeq/glyL2Gupz/cxQlOnoqlA7KCX uFDMt/sdWu8ki+0wcHbZe49yhi2nxBh4tSKw6eeU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tanya Agarwal , Herbert Xu , Sasha Levin Subject: [PATCH 5.15 175/279] lib: 842: Improve error handling in sw842_compress() Date: Tue, 8 Apr 2025 12:49:18 +0200 Message-ID: <20250408104831.055631460@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250408104826.319283234@linuxfoundation.org> References: <20250408104826.319283234@linuxfoundation.org> User-Agent: quilt/0.68 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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tanya Agarwal [ Upstream commit af324dc0e2b558678aec42260cce38be16cc77ca ] The static code analysis tool "Coverity Scan" pointed the following implementation details out for further development considerations: CID 1309755: Unused value In sw842_compress: A value assigned to a variable is never used. (CWE-563) returned_value: Assigning value from add_repeat_template(p, repeat_count) to ret here, but that stored value is overwritten before it can be used. Conclusion: Add error handling for the return value from an add_repeat_template() call. Fixes: 2da572c959dd ("lib: add software 842 compression/decompression") Signed-off-by: Tanya Agarwal Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- lib/842/842_compress.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/842/842_compress.c b/lib/842/842_compress.c index c02baa4168e16..055356508d97c 100644 --- a/lib/842/842_compress.c +++ b/lib/842/842_compress.c @@ -532,6 +532,8 @@ int sw842_compress(const u8 *in, unsigned int ilen, } if (repeat_count) { ret = add_repeat_template(p, repeat_count); + if (ret) + return ret; repeat_count = 0; if (next == last) /* reached max repeat bits */ goto repeat; -- 2.39.5