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 0A3BC8F57 for ; Sun, 16 Jul 2023 20:43:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 846EAC433C8; Sun, 16 Jul 2023 20:43:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689540214; bh=Cc/XOMoNXjows13WsTci9P5/wzuyGdRAzLhZl5Y/v0I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pUg5sAloDvnqSuoGDhpmh3lzbNLi2TkVF6UC9dX8PBsQ10a3DVrno9rug6/f9ZHof A1g234dUHnpEhm/2CdKEj6M5UJDYMvNY18YhUIFG0wLJMMapGD0sFhNS35u2XGDvM4 EiT3czhWP434t03MB4xjdujVqfCi713YdlvdqiPA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dan Carpenter , Stefan Wahren , Florian Fainelli , Stephen Boyd , Sasha Levin Subject: [PATCH 6.1 256/591] clk: bcm: rpi: Fix off by one in raspberrypi_discover_clocks() Date: Sun, 16 Jul 2023 21:46:35 +0200 Message-ID: <20230716194930.509436730@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230716194923.861634455@linuxfoundation.org> References: <20230716194923.861634455@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Dan Carpenter [ Upstream commit da2edb3e3c09fd1451b7f400ccd1070ef086619a ] Smatch detected an off by one in this code: drivers/clk/bcm/clk-raspberrypi.c:374 raspberrypi_discover_clocks() error: buffer overflow 'data->hws' 16 <= 16 The data->hws[] array has RPI_FIRMWARE_NUM_CLK_ID elements so the > comparison needs to changed to >=. Fixes: 12c90f3f27bb ("clk: bcm: rpi: Add variant structure") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/5a850b08-d2f5-4794-aceb-a6b468965139@kili.mountain Reviewed-by: Stefan Wahren Reviewed-by: Florian Fainelli Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin --- drivers/clk/bcm/clk-raspberrypi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/clk/bcm/clk-raspberrypi.c b/drivers/clk/bcm/clk-raspberrypi.c index 679f4649a7efd..278f845572813 100644 --- a/drivers/clk/bcm/clk-raspberrypi.c +++ b/drivers/clk/bcm/clk-raspberrypi.c @@ -375,9 +375,9 @@ static int raspberrypi_discover_clocks(struct raspberrypi_clk *rpi, while (clks->id) { struct raspberrypi_clk_variant *variant; - if (clks->id > RPI_FIRMWARE_NUM_CLK_ID) { + if (clks->id >= RPI_FIRMWARE_NUM_CLK_ID) { dev_err(rpi->dev, "Unknown clock id: %u (max: %u)\n", - clks->id, RPI_FIRMWARE_NUM_CLK_ID); + clks->id, RPI_FIRMWARE_NUM_CLK_ID - 1); return -EINVAL; } -- 2.39.2