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 AFCB82690FB; Tue, 8 Apr 2025 12:00:01 +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=1744113601; cv=none; b=DsSeZdguP90ppzVVDhmrS9Q7DRpO3L9TzqlUznE3cWGV5mfMm4ChHLYy2tGhs0oWzDlAXkrV8gjXsruWe/KhMZI1aTNTLmdFj8Pl4HbdiTTkPzUirW/Q5UndT67pDWeHQLRCOL00X/YuCwaMrPOuihBG6qLeyiMGT30w08r31/g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744113601; c=relaxed/simple; bh=5SWyBvnXChl+Ib7VDzNZPaG8YgFR3CiG7TcYTctKCCg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CerBw9ilV4VKOyC715Srfl6dAc5QG3R+NDlodrkJudifyZ9WovR0HHR8l698aA7b0/Hrgc0lcb048dMTLGAQBCviQfvZKkPiwLmpoIQoud4xgmpEGKMfgAnvBLYfqoiZZv46zaYEEoEUXOJKMVFd8zg0Ixz+D96mT5DRCZRPmTw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=VIFigsPv; 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="VIFigsPv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3DF73C4CEE5; Tue, 8 Apr 2025 12:00:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1744113601; bh=5SWyBvnXChl+Ib7VDzNZPaG8YgFR3CiG7TcYTctKCCg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VIFigsPv6GrrF4FEGC1LTrtJ83ShSyj6+DeI2P1c+JCPIbP3X5TWaUjWMIPTUTFpp XTEp8zbRl8ivjNR1PQLZj+TTG55A1Gs1pliYA5+7tGyxQ41C9KH2sgWVEWFugWeCtY TRJdgAj2C8TpoBHs1vUU3VTblEjXqOsfymbaKmXY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Henry Martin , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.6 220/268] arcnet: Add NULL check in com20020pci_probe() Date: Tue, 8 Apr 2025 12:50:31 +0200 Message-ID: <20250408104834.518873160@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250408104828.499967190@linuxfoundation.org> References: <20250408104828.499967190@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 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Henry Martin [ Upstream commit fda8c491db2a90ff3e6fbbae58e495b4ddddeca3 ] devm_kasprintf() returns NULL when memory allocation fails. Currently, com20020pci_probe() does not check for this case, which results in a NULL pointer dereference. Add NULL check after devm_kasprintf() to prevent this issue and ensure no resources are left allocated. Fixes: 6b17a597fc2f ("arcnet: restoring support for multiple Sohard Arcnet cards") Signed-off-by: Henry Martin Link: https://patch.msgid.link/20250402135036.44697-1-bsdhenrymartin@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/arcnet/com20020-pci.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/net/arcnet/com20020-pci.c b/drivers/net/arcnet/com20020-pci.c index 7b5c8bb02f119..e7db6a4e4dc9d 100644 --- a/drivers/net/arcnet/com20020-pci.c +++ b/drivers/net/arcnet/com20020-pci.c @@ -250,18 +250,33 @@ static int com20020pci_probe(struct pci_dev *pdev, card->tx_led.default_trigger = devm_kasprintf(&pdev->dev, GFP_KERNEL, "arc%d-%d-tx", dev->dev_id, i); + if (!card->tx_led.default_trigger) { + ret = -ENOMEM; + goto err_free_arcdev; + } card->tx_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "pci:green:tx:%d-%d", dev->dev_id, i); - + if (!card->tx_led.name) { + ret = -ENOMEM; + goto err_free_arcdev; + } card->tx_led.dev = &dev->dev; card->recon_led.brightness_set = led_recon_set; card->recon_led.default_trigger = devm_kasprintf(&pdev->dev, GFP_KERNEL, "arc%d-%d-recon", dev->dev_id, i); + if (!card->recon_led.default_trigger) { + ret = -ENOMEM; + goto err_free_arcdev; + } card->recon_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "pci:red:recon:%d-%d", dev->dev_id, i); + if (!card->recon_led.name) { + ret = -ENOMEM; + goto err_free_arcdev; + } card->recon_led.dev = &dev->dev; ret = devm_led_classdev_register(&pdev->dev, &card->tx_led); -- 2.39.5