From patchwork Tue Jun 9 17:44:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 224604 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,USER_AGENT_GIT autolearn=unavailable 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 B3CB7C433DF for ; Tue, 9 Jun 2020 18:23:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 89A3B2067B for ; Tue, 9 Jun 2020 18:23:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591727004; bh=akhqUkT0c9xF/42feGFbgYB1eZCfR8+2RTKObv/fnaM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=y7Q/DYURZsj3hWADmQpWOSCfeBwJO9tfk4NYcNg6O95Y15Ce0Ue35yqg4anxRzyCH hVM2I+ltSTO1jECTHnPnxjeFUY7B1QhUR+PgbXm3Awpa+qVzjIEwpP8ovk4yhiZRXA gb05Cqa4xg49WvGh6XiKOtnpK1b3OBBiuDxCpZg8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732107AbgFIRr3 (ORCPT ); Tue, 9 Jun 2020 13:47:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:58712 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732103AbgFIRr1 (ORCPT ); Tue, 9 Jun 2020 13:47:27 -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 7323520801; Tue, 9 Jun 2020 17:47:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591724846; bh=akhqUkT0c9xF/42feGFbgYB1eZCfR8+2RTKObv/fnaM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L+siqMPWa08kbtMxKgvqkjjBKBIYDfIlFSbSNEMHMivFNrCZDsttJzbtlYJcETXuj xLgqtHijMicGy94soIo804RkIK3pZoijTOuRjSmgpBB5DPunjUraXQW3YnTE6UQAgY vp7zVs9dBGABzNdsRUOkbuao82lfjvKU8inSxdos= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, yangerkun , Oliver Hartkopp , "David S. Miller" , Ben Hutchings Subject: [PATCH 4.4 17/36] slip: not call free_netdev before rtnl_unlock in slip_open Date: Tue, 9 Jun 2020 19:44:17 +0200 Message-Id: <20200609173934.264332124@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200609173933.288044334@linuxfoundation.org> References: <20200609173933.288044334@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: yangerkun commit f596c87005f7b1baeb7d62d9a9e25d68c3dfae10 upstream. As the description before netdev_run_todo, we cannot call free_netdev before rtnl_unlock, fix it by reorder the code. Signed-off-by: yangerkun Reviewed-by: Oliver Hartkopp Signed-off-by: David S. Miller [bwh: Backported to <4.11: free_netdev() is called through sl_free_netdev()] Signed-off-by: Ben Hutchings Signed-off-by: Greg Kroah-Hartman --- drivers/net/slip/slip.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/net/slip/slip.c +++ b/drivers/net/slip/slip.c @@ -867,7 +867,10 @@ err_free_chan: sl->tty = NULL; tty->disc_data = NULL; clear_bit(SLF_INUSE, &sl->flags); + /* do not call free_netdev before rtnl_unlock */ + rtnl_unlock(); sl_free_netdev(sl->dev); + return err; err_exit: rtnl_unlock();