From patchwork Tue Mar 10 12:40:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 229731 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D812FC18E5C for ; Tue, 10 Mar 2020 12:55:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AC71E24697 for ; Tue, 10 Mar 2020 12:55:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583844900; bh=iBM1w65UJFTOJRont15HkGQodYMg2ICLaa+vsjpa610=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=kqoNnC6thl5ieZ6+btMNZG6bxDL4YrQAx38ul1J4mr3NGvVM2SOR9VM5O08j5GM9w 0xtq34aY6nmOCdmc/8tn1wHwWftN9GX3FKVp8WiHpctOWcRMmwKkFmtvhD/sYld8s/ zsVLnqjD4dCFREyKrvQ3MKpcjXZgmsfZ3rNeGWKA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728494AbgCJMzA (ORCPT ); Tue, 10 Mar 2020 08:55:00 -0400 Received: from mail.kernel.org ([198.145.29.99]:33590 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729034AbgCJMy6 (ORCPT ); Tue, 10 Mar 2020 08:54:58 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A06782253D; Tue, 10 Mar 2020 12:54:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583844898; bh=iBM1w65UJFTOJRont15HkGQodYMg2ICLaa+vsjpa610=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sxIcJYFk933ouFXANOq8iLuCzGKnU766UdVPQHPTxeYga4cAGiDh6VqlB/oXe7L3c l9WSaGKTmUUKXzd+HDoIxr6vuhOhK1D+9pGaykpYRRddrf7eXO0U7PSFRBR0k5r/+b HJ0W0FAgBuQTATvGGMhQSVjvMu4fRZ5s9GuU/qfU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, syzbot+b2098bc44728a4efb3e9@syzkaller.appspotmail.com, Greg Hackmann , Chenbo Feng , Sumit Semwal , Cong Wang Subject: [PATCH 5.4 160/168] dma-buf: free dmabuf->name in dma_buf_release() Date: Tue, 10 Mar 2020 13:40:06 +0100 Message-Id: <20200310123651.733901630@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200310123635.322799692@linuxfoundation.org> References: <20200310123635.322799692@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Cong Wang commit d1f37226431f5d9657aa144a40f2383adbcf27e1 upstream. dma-buf name can be set via DMA_BUF_SET_NAME ioctl, but once set it never gets freed. Free it in dma_buf_release(). Fixes: bb2bb9030425 ("dma-buf: add DMA_BUF_SET_NAME ioctls") Reported-by: syzbot+b2098bc44728a4efb3e9@syzkaller.appspotmail.com Cc: Greg Hackmann Cc: Chenbo Feng Cc: Sumit Semwal Signed-off-by: Cong Wang Acked-by: Chenbo Feng Signed-off-by: Sumit Semwal Link: https://patchwork.freedesktop.org/patch/msgid/20191227063204.5813-1-xiyou.wangcong@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/dma-buf/dma-buf.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -108,6 +108,7 @@ static int dma_buf_release(struct inode dma_resv_fini(dmabuf->resv); module_put(dmabuf->owner); + kfree(dmabuf->name); kfree(dmabuf); return 0; }