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 EDEB028312F; Mon, 9 Feb 2026 14:54:56 +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=1770648897; cv=none; b=cYe/cI3atwkRfQXJ1ZQAHICqxIUtqcj3Xage2GHZWx8ToD8c29ahC6jmlgXU6lLP7Gh4p0PkkgU0+ZD8e7TeNW/2X97kDw95385PrknunXU1sAr10YsOKdGqOPLxo8gJ8QZnMoGoX8kvV89XtPvQzU7N7K6Nj1bQfn9Nx98lYj0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770648897; c=relaxed/simple; bh=gdjMXbHRsFcd/bL1UZvxguIBVm6FhnR7C0mnCdxRVKE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dmMy9yaHEfhwFFuaHe1mKxynZpdBudv6VNk0MRC6q5xCVA3VbiACnVkUmt4sGltZ3RLiVSuDAP8c69ez4xfdkFCoCZ/pPPhgWpgF8lqnZBtJcza7IZRsTAdQJWuIDGeylQpsfATcBf8XVl/nFYs0sjbSIkFQNbEC5tdGRSuha8g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=KwifwY+I; 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="KwifwY+I" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7A8FDC116C6; Mon, 9 Feb 2026 14:54:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1770648896; bh=gdjMXbHRsFcd/bL1UZvxguIBVm6FhnR7C0mnCdxRVKE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KwifwY+IkIo6XspBLIQFfCM0b8nOGuETmsPuzzX6a0NbQPw0Hudclwpa+QAm9xAYr PMYlZx7GXqFMdwwEHREtBo3KK+IKa9WcrMkzrXs5LUXqNFOunLP9Xfc0ecRahUXsCk bYcIdHC3uS7IK1DrwtUglTsau12KqqjMKMZgIWME= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zilin Guan , Kory Maincent , Jakub Kicinski , Sasha Levin Subject: [PATCH 5.15 47/75] net: liquidio: Initialize netdev pointer before queue setup Date: Mon, 9 Feb 2026 15:24:44 +0100 Message-ID: <20260209142303.539170511@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260209142301.830618238@linuxfoundation.org> References: <20260209142301.830618238@linuxfoundation.org> User-Agent: quilt/0.69 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: Zilin Guan [ Upstream commit 926ede0c85e1e57c97d64d9612455267d597bb2c ] In setup_nic_devices(), the netdev is allocated using alloc_etherdev_mq(). However, the pointer to this structure is stored in oct->props[i].netdev only after the calls to netif_set_real_num_rx_queues() and netif_set_real_num_tx_queues(). If either of these functions fails, setup_nic_devices() returns an error without freeing the allocated netdev. Since oct->props[i].netdev is still NULL at this point, the cleanup function liquidio_destroy_nic_device() will fail to find and free the netdev, resulting in a memory leak. Fix this by initializing oct->props[i].netdev before calling the queue setup functions. This ensures that the netdev is properly accessible for cleanup in case of errors. Compile tested only. Issue found using a prototype static analysis tool and code review. Fixes: c33c997346c3 ("liquidio: enhanced ethtool --set-channels feature") Signed-off-by: Zilin Guan Reviewed-by: Kory Maincent Link: https://patch.msgid.link/20260128154440.278369-2-zilin@seu.edu.cn Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- .../net/ethernet/cavium/liquidio/lio_main.c | 34 +++++++++---------- 1 file changed, 17 insertions(+), 17 deletions(-) diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c index 443755729d793..296e372f36f17 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_main.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c @@ -3529,6 +3529,23 @@ static int setup_nic_devices(struct octeon_device *octeon_dev) */ netdev->netdev_ops = &lionetdevops; + lio = GET_LIO(netdev); + + memset(lio, 0, sizeof(struct lio)); + + lio->ifidx = ifidx_or_pfnum; + + props = &octeon_dev->props[i]; + props->gmxport = resp->cfg_info.linfo.gmxport; + props->netdev = netdev; + + /* Point to the properties for octeon device to which this + * interface belongs. + */ + lio->oct_dev = octeon_dev; + lio->octprops = props; + lio->netdev = netdev; + retval = netif_set_real_num_rx_queues(netdev, num_oqueues); if (retval) { dev_err(&octeon_dev->pci_dev->dev, @@ -3545,16 +3562,6 @@ static int setup_nic_devices(struct octeon_device *octeon_dev) goto setup_nic_dev_free; } - lio = GET_LIO(netdev); - - memset(lio, 0, sizeof(struct lio)); - - lio->ifidx = ifidx_or_pfnum; - - props = &octeon_dev->props[i]; - props->gmxport = resp->cfg_info.linfo.gmxport; - props->netdev = netdev; - lio->linfo.num_rxpciq = num_oqueues; lio->linfo.num_txpciq = num_iqueues; for (j = 0; j < num_oqueues; j++) { @@ -3620,13 +3627,6 @@ static int setup_nic_devices(struct octeon_device *octeon_dev) netdev->min_mtu = LIO_MIN_MTU_SIZE; netdev->max_mtu = LIO_MAX_MTU_SIZE; - /* Point to the properties for octeon device to which this - * interface belongs. - */ - lio->oct_dev = octeon_dev; - lio->octprops = props; - lio->netdev = netdev; - dev_dbg(&octeon_dev->pci_dev->dev, "if%d gmx: %d hw_addr: 0x%llx\n", i, lio->linfo.gmxport, CVM_CAST64(lio->linfo.hw_addr)); -- 2.51.0