From patchwork Tue Sep 17 03:31:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Navid Emamdoost X-Patchwork-Id: 11148039 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 AADA514E5 for ; Tue, 17 Sep 2019 03:31:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8922720650 for ; Tue, 17 Sep 2019 03:31:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="rGHRRJc6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392211AbfIQDbo (ORCPT ); Mon, 16 Sep 2019 23:31:44 -0400 Received: from mail-io1-f65.google.com ([209.85.166.65]:43574 "EHLO mail-io1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730000AbfIQDbo (ORCPT ); Mon, 16 Sep 2019 23:31:44 -0400 Received: by mail-io1-f65.google.com with SMTP id v2so4080968iob.10; Mon, 16 Sep 2019 20:31:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=AZbBTIbQbqXwZoo2mD7WVQh8P9va3DGLxdwCMpbqykM=; b=rGHRRJc6cmlQU6fzDipZt7KO5qJAWDWcnNDKSmndXpk0ewSLW23M8z7MSAS//IRj1l tALlRIDw+7SUzX5oZBm7estXiqj5CDURnMfZuF79BxBQ+zBn15C215GlFtTeHRuG5oJR v35CbGdsHyQUlJbZwndh7jhpbviDigFIUwvtN87/RcR1LLkquGA24oKzOknAIZzGKLxO 7oJx7GgYMDJcZTaQBiy1SXTwC0dRQjDNmtdSjt40yzfROfi7nvGYsEyGo683REJTh3cr Csz+zl2qSybIJaFl1b9JqdfU0fZdWLhwBvZAW6VFTo1GDKCalj3bu56OLWpXe5/2EyHe k8+Q== 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; bh=AZbBTIbQbqXwZoo2mD7WVQh8P9va3DGLxdwCMpbqykM=; b=H0T7GzjEzd76Q4M+fZ0zeWuyI2xvoQ6DwrCEEZr3Gb78xewtcJrJ2Uoy02HqXTY7Wh wPXhKdlNpvGEAr5jCqHSqAO97xEf0q8Uo+5PTpbIePdn6AUBy+oZq95pT7ugT55Lw+X4 0q/Ef6854dvkM3Z9cjers0ia9MTaDYv1Ipn5SZ0gb87EvuZ9iQxfcNxpiqrAR3DfEGIH LTwDRowj4YD0b9QqzpEyDlqbsMWY2241Yfj+awLnJ0gOSCTnAhE/BlgB2BrraWvCYfFH t7thN0U6VI7faKxaP/Q1pUMeJ3tIcq+5lXfEzZecdIBxHFvS5W4u4eULnDUKhaa/jk4u SLbQ== X-Gm-Message-State: APjAAAVgR6KWN4oOwYJYA/Y6CJAcZxUfM16AUVfuG/Yx618weACP4BC4 YV7/xT1rb1pLuAt/gojQxXgdV4jgRos= X-Google-Smtp-Source: APXvYqx4BGYBTXWug5NY3wJbo99uGA8r8HQaH6QnaLuCl7KSJytf2lAhCbNRWnl2/4bx5Sw7OH9Ksg== X-Received: by 2002:a6b:c7c2:: with SMTP id x185mr1469065iof.224.1568691103125; Mon, 16 Sep 2019 20:31:43 -0700 (PDT) Received: from cs-dulles.cs.umn.edu (cs-dulles.cs.umn.edu. [128.101.35.54]) by smtp.googlemail.com with ESMTPSA id i26sm1134258ion.40.2019.09.16.20.31.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Sep 2019 20:31:42 -0700 (PDT) From: Navid Emamdoost Cc: emamd001@umn.edu, smccaman@umn.edu, kjlu@umn.edu, Navid Emamdoost , Ohad Ben-Cohen , Bjorn Andersson , linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] rpmsg: char: release allocated memory Date: Mon, 16 Sep 2019 22:31:23 -0500 Message-Id: <20190917033124.1077-1-navid.emamdoost@gmail.com> X-Mailer: git-send-email 2.17.1 To: unlisted-recipients:; (no To-header on input) Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org In rpmsg_eptdev_write_iter, if copy_from_iter_full fails the allocated buffer needs to be released. Signed-off-by: Navid Emamdoost --- drivers/rpmsg/rpmsg_char.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c index eea5ebbb5119..c655074c07c2 100644 --- a/drivers/rpmsg/rpmsg_char.c +++ b/drivers/rpmsg/rpmsg_char.c @@ -227,8 +227,10 @@ static ssize_t rpmsg_eptdev_write_iter(struct kiocb *iocb, if (!kbuf) return -ENOMEM; - if (!copy_from_iter_full(kbuf, len, from)) - return -EFAULT; + if (!copy_from_iter_full(kbuf, len, from)) { + ret = -EFAULT; + goto free_kbuf; + } if (mutex_lock_interruptible(&eptdev->ept_lock)) { ret = -ERESTARTSYS;