From patchwork Sun Jun 14 03:33:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aditya Pakki X-Patchwork-Id: 11603149 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 50013138C for ; Sun, 14 Jun 2020 03:34:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2E48A2083E for ; Sun, 14 Jun 2020 03:34:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=umn.edu header.i=@umn.edu header.b="RobdjC7B" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726686AbgFNDeB (ORCPT ); Sat, 13 Jun 2020 23:34:01 -0400 Received: from mta-p8.oit.umn.edu ([134.84.196.208]:46732 "EHLO mta-p8.oit.umn.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726672AbgFNDeA (ORCPT ); Sat, 13 Jun 2020 23:34:00 -0400 Received: from localhost (unknown [127.0.0.1]) by mta-p8.oit.umn.edu (Postfix) with ESMTP id 49l0S73PGGz9vbsh for ; Sun, 14 Jun 2020 03:33:59 +0000 (UTC) X-Virus-Scanned: amavisd-new at umn.edu Received: from mta-p8.oit.umn.edu ([127.0.0.1]) by localhost (mta-p8.oit.umn.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CVjazQOD78AV for ; Sat, 13 Jun 2020 22:33:59 -0500 (CDT) Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mta-p8.oit.umn.edu (Postfix) with ESMTPS id 49l0S71kDCz9vbsc for ; Sat, 13 Jun 2020 22:33:59 -0500 (CDT) DMARC-Filter: OpenDMARC Filter v1.3.2 mta-p8.oit.umn.edu 49l0S71kDCz9vbsc DKIM-Filter: OpenDKIM Filter v2.11.0 mta-p8.oit.umn.edu 49l0S71kDCz9vbsc Received: by mail-io1-f72.google.com with SMTP id c5so9019509ioh.2 for ; Sat, 13 Jun 2020 20:33:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=umn.edu; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=FySxf3tuC7inUbFdRrnqlCjs2f799IH8urJt6EX7/xk=; b=RobdjC7BI9oSeEZz3+a/H55JwjJmB6QuBXEclDdafqqtrEhTehWky6u+IwqCYVPEIr gGVgfJtPLMAL5MnZ9PLf+QBo7RNp9rvWI68hCRSah0fRmd4i9QXSvNkHwkxwtJtJytxl p7wYH12Kng40SW8CFVDWLydDDMtfRo/A7E8rSHoeIdf5URdEFID4wOzmosURBb8M3qqN NEP5W6p7HRvAfGhO0zdRk81N/gdeXHb0WHi4lMZasVMV63ZQP4yflh0DRJCTPJPQsKVG w0p/M3gBglv4rQCM6A/cWDlOXeJ7aFqsM+H7mD89FXgWbelpreqKafkoxyYW/MMXrk3S S8cw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=FySxf3tuC7inUbFdRrnqlCjs2f799IH8urJt6EX7/xk=; b=i6wHxVgDR/1GeDkTErVrYDWQMM65uzKT+rlPNZZVxA6qals84dRCi68o8lwOBvbro5 5gUVRTlo/eCckkUH6I7wbnNqjmPjfaHmCFELlAoYRC+VYUq21ZQ732dj4t4qsWedxaEk RX0hoa41wqtdZekorNtNccubdTQ03Xyc7L8oUkqc9DPSqzUP8CIRLkY6WEp4lc8Z0vi+ Cqh6YUEQwhNkabhE+JYups2SVRg3qXo7nCa8dFkvH+uQphVdV7G3DIrLzX4xjitYaLpg enauSby4xeepMhr51kbnMTOYkQFOQPx1vlgYu9lejz1h5agbINXksNd9o2e2zaQDqw+0 K7pA== X-Gm-Message-State: AOAM533uAke57FuTm8anXuGZRYlTzKi0MIDA/+3R/72pfe72Go4BxLKS 7G57uBCiNuC1ZBq3Z/RX/q0p/SgC+ylOID2pKffxx2IaBugOkrvGAd/tLDS3ZPZOTYtz0V2vWw/ LQVIRPpe3UYYQxH/AUYLA2paq X-Received: by 2002:a92:9142:: with SMTP id t63mr19380942ild.191.1592105638817; Sat, 13 Jun 2020 20:33:58 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzhY2fLTWyTL8+6HNSQtJlCbrEvVMcF9fyDtrSg1B8kJs5C8Hn0oHEC/O97di8LxiTg7tm7ag== X-Received: by 2002:a92:9142:: with SMTP id t63mr19380934ild.191.1592105638665; Sat, 13 Jun 2020 20:33:58 -0700 (PDT) Received: from syssec1.cs.umn.edu ([2607:ea00:101:3c74:49fa:9c47:e40b:9c40]) by smtp.gmail.com with ESMTPSA id v2sm5590818iol.36.2020.06.13.20.33.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 13 Jun 2020 20:33:58 -0700 (PDT) From: Aditya Pakki To: pakki001@umn.edu Cc: kjlu@umn.edu, wu000273@umn.edu, Greg Kroah-Hartman , Alan Stern , Eugeniu Rosca , Andrew Morton , Mathias Nyman , Kai-Heng Feng , "Lee, Chiasheng" , David Heinzelmann , Hardik Gajjar , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] usb: core: fix reference count leak in usb_port_resume Date: Sat, 13 Jun 2020 22:33:53 -0500 Message-Id: <20200614033355.129442-1-pakki001@umn.edu> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org usb_port_resume() calls pm_runtime_get_sync() that increments the reference counter. In case of failure, decrement the reference count and return the error. Signed-off-by: Aditya Pakki --- drivers/usb/core/hub.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index b1e14beaac5f..a9231f27144e 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3542,6 +3542,7 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) if (status < 0) { dev_dbg(&udev->dev, "can't resume usb port, status %d\n", status); + pm_runtime_put_sync(&port_dev->dev); return status; } }