From patchwork Wed Mar 9 23:12:12 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kamal Mostafa X-Patchwork-Id: 595464 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) by ozlabs.org (Postfix) with ESMTP id 0B1EE140322; Thu, 10 Mar 2016 10:18:57 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.76) (envelope-from ) id 1adnNW-0005A2-48; Wed, 09 Mar 2016 23:18:54 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by huckleberry.canonical.com with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1adnK2-0003El-73 for kernel-team@lists.ubuntu.com; Wed, 09 Mar 2016 23:15:18 +0000 Received: from 1.general.kamal.us.vpn ([10.172.68.52] helo=fourier) by youngberry.canonical.com with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.76) (envelope-from ) id 1adnK1-0002ZN-Es; Wed, 09 Mar 2016 23:15:17 +0000 Received: from kamal by fourier with local (Exim 4.86) (envelope-from ) id 1adnJt-00040f-PT; Wed, 09 Mar 2016 15:15:09 -0800 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Subject: [PATCH 3.13.y-ckt 005/138] ALSA: usb-audio: avoid freeing umidi object twice Date: Wed, 9 Mar 2016 15:12:12 -0800 Message-Id: <1457565265-15195-6-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1457565265-15195-1-git-send-email-kamal@canonical.com> References: <1457565265-15195-1-git-send-email-kamal@canonical.com> X-Extended-Stable: 3.13 Cc: Takashi Iwai , Kamal Mostafa , Andrey Konovalov X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.14 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: kernel-team-bounces@lists.ubuntu.com 3.13.11-ckt36 -stable review patch. If anyone has any objections, please let me know. ---8<------------------------------------------------------------ From: Andrey Konovalov commit 07d86ca93db7e5cdf4743564d98292042ec21af7 upstream. The 'umidi' object will be free'd on the error path by snd_usbmidi_free() when tearing down the rawmidi interface. So we shouldn't try to free it in snd_usbmidi_create() after having registered the rawmidi interface. Found by KASAN. Signed-off-by: Andrey Konovalov Acked-by: Clemens Ladisch Signed-off-by: Takashi Iwai Signed-off-by: Kamal Mostafa --- sound/usb/midi.c | 1 - 1 file changed, 1 deletion(-) diff --git a/sound/usb/midi.c b/sound/usb/midi.c index 9123fc5..424c1e8 100644 --- a/sound/usb/midi.c +++ b/sound/usb/midi.c @@ -2365,7 +2365,6 @@ int snd_usbmidi_create(struct snd_card *card, else err = snd_usbmidi_create_endpoints(umidi, endpoints); if (err < 0) { - snd_usbmidi_free(umidi); return err; }