Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756635AbaF1SQl (ORCPT ); Sat, 28 Jun 2014 14:16:41 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:54161 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753634AbaF1Rvq (ORCPT ); Sat, 28 Jun 2014 13:51:46 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Johan Hovold Subject: [PATCH 3.15 056/139] USB: sierra: fix urb and memory leak in resume error path Date: Sat, 28 Jun 2014 10:46:57 -0700 Message-Id: <20140628174607.997082359@linuxfoundation.org> X-Mailer: git-send-email 2.0.1 In-Reply-To: <20140628174605.352098823@linuxfoundation.org> References: <20140628174605.352098823@linuxfoundation.org> User-Agent: quilt/0.63-1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold commit 7fdd26a01eb7b6cb6855ff8f69ef4a720720dfcb upstream. Neither the transfer buffer or the urb itself were released in the resume error path for delayed writes. Also on errors, the remainder of the queue was not even processed, which leads to further urb and buffer leaks. The same error path also failed to balance the outstanding-urb counter, something which results in degraded throughput or completely blocked writes. Fix this by releasing urb and buffer and balancing counters on errors, and by always processing the whole queue even when submission of one urb fails. Fixes: e6929a9020ac ("USB: support for autosuspend in sierra while online") Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/sierra.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -1004,8 +1004,12 @@ static int sierra_resume(struct usb_seri if (err < 0) { intfdata->in_flight--; usb_unanchor_urb(urb); - usb_scuttle_anchored_urbs(&portdata->delayed); - break; + kfree(urb->transfer_buffer); + usb_free_urb(urb); + spin_lock(&portdata->lock); + portdata->outstanding_urbs--; + spin_unlock(&portdata->lock); + continue; } } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/