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 2443F8833 for ; Sun, 16 Jul 2023 20:50:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 997BCC433C8; Sun, 16 Jul 2023 20:50:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689540644; bh=uw5cc+XnUdy0p5Sov0EVCvkq9s1jvUHAMe2O3GbMifg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SEn7FFP3WOYl4kWICecI03fr4Mrh8y4qn0Ml0YNOVE3gfdDhzT73jCACxpJiN6tnK IUZKB7MDZ1whZAeXM7eM+G6BWagXFIC8TEgFE6K2wI1OOQzu3tCSO2zmgcaIbLRUot VaAdFmIJxC5c5nntuT6ZsWZ757iHXuBTct5JE7o4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Vladislav Efanov , Shawn Guo , Sasha Levin Subject: [PATCH 6.1 409/591] usb: dwc3: qcom: Fix potential memory leak Date: Sun, 16 Jul 2023 21:49:08 +0200 Message-ID: <20230716194934.495390695@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: Vladislav Efanov [ Upstream commit 097fb3ee710d4de83b8d4f5589e8ee13e0f0541e ] Function dwc3_qcom_probe() allocates memory for resource structure which is pointed by parent_res pointer. This memory is not freed. This leads to memory leak. Use stack memory to prevent memory leak. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 2bc02355f8ba ("usb: dwc3: qcom: Add support for booting with ACPI") Signed-off-by: Vladislav Efanov Acked-by: Shawn Guo Link: https://lore.kernel.org/r/20230517172518.442591-1-VEfanov@ispras.ru Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/dwc3/dwc3-qcom.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 79b22abf97276..482260182d656 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -800,6 +800,7 @@ static int dwc3_qcom_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct dwc3_qcom *qcom; struct resource *res, *parent_res = NULL; + struct resource local_res; int ret, i; bool ignore_pipe_clk; bool wakeup_source; @@ -851,9 +852,8 @@ static int dwc3_qcom_probe(struct platform_device *pdev) if (np) { parent_res = res; } else { - parent_res = kmemdup(res, sizeof(struct resource), GFP_KERNEL); - if (!parent_res) - return -ENOMEM; + memcpy(&local_res, res, sizeof(struct resource)); + parent_res = &local_res; parent_res->start = res->start + qcom->acpi_pdata->qscratch_base_offset; -- 2.39.2