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 01A341F93D for ; Fri, 21 Jul 2023 16:11:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 76BF9C433C8; Fri, 21 Jul 2023 16:11:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689955880; bh=WobzbKCo3HNo/CQqTM7PQ6upSAaCKLi2CbsS297v0Ko=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Jw4tD8MYHwwzhRegWNNXwm8WQSmsrPZt9ARPjMRzIVFBm5AD9bvHwT3VILR/AcFTI Uu3Nccy4iYfdriDS/TX3S1gsRIw1pHZPgTL4bUUKAXdinFvDL6OPWxOty5Y5Y3nA6k v70i18NtNADD1zi6AamZPZFc/g+zkVh5YwbiDrd0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Yingliang , Dave Jiang , Jon Mason , Sasha Levin Subject: [PATCH 6.4 062/292] NTB: ntb_transport: fix possible memory leak while device_register() fails Date: Fri, 21 Jul 2023 18:02:51 +0200 Message-ID: <20230721160531.458115878@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230721160528.800311148@linuxfoundation.org> References: <20230721160528.800311148@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: Yang Yingliang [ Upstream commit 8623ccbfc55d962e19a3537652803676ad7acb90 ] If device_register() returns error, the name allocated by dev_set_name() need be freed. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So fix this by calling put_device(), then the name can be freed in kobject_cleanup(), and client_dev is freed in ntb_transport_client_release(). Fixes: fce8a7bb5b4b ("PCI-Express Non-Transparent Bridge Support") Signed-off-by: Yang Yingliang Reviewed-by: Dave Jiang Signed-off-by: Jon Mason Signed-off-by: Sasha Levin --- drivers/ntb/ntb_transport.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c index a9b97ebc71ac5..2abd2235bbcab 100644 --- a/drivers/ntb/ntb_transport.c +++ b/drivers/ntb/ntb_transport.c @@ -410,7 +410,7 @@ int ntb_transport_register_client_dev(char *device_name) rc = device_register(dev); if (rc) { - kfree(client_dev); + put_device(dev); goto err; } -- 2.39.2