From patchwork Thu Mar 19 13:04:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 228998 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, 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 BE597C4332D for ; Thu, 19 Mar 2020 13:30:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 969B320409 for ; Thu, 19 Mar 2020 13:30:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584624654; bh=Ivt/kjl4lNrIHJf9pGA7RmIvQ4c/cPTiqqOzvl/Ea2A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UNY5+BqokQEeEuSS5WLKjUoD34/FRLr1DrT3785WeWZggd9utgx326zQwregCfqMO SVT5wI0eCNlHpg+0PIU0/1BXnPu+Wr03BeuHq7KquPNWS9MVfdQvJnUJjVHaFZeRna R4AIpH6YCGLl0ehH3xn/Tk4cUfrp3F+ZAT4c4CNI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729914AbgCSNTl (ORCPT ); Thu, 19 Mar 2020 09:19:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:43138 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729910AbgCSNTk (ORCPT ); Thu, 19 Mar 2020 09:19:40 -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 EF4CF208D6; Thu, 19 Mar 2020 13:19:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584623980; bh=Ivt/kjl4lNrIHJf9pGA7RmIvQ4c/cPTiqqOzvl/Ea2A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=C6lJuBbn4wKYDCpCoOLdAIenIMQY2XSjZYmvw0bXMrwvGteOlF1ar5K6roYbUTgOb bC8uMGev9ERGVtmynm2e+Dtsmk6bIx0nRp6Z0tqXVz793eGJc6JUOgE1BlmLrvhL5j RrPgoDWDMPx+aAu/E7NVvNOay3hpr6kd/FL+Os7o= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, yangerkun , Oliver Hartkopp , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 19/48] slip: not call free_netdev before rtnl_unlock in slip_open Date: Thu, 19 Mar 2020 14:04:01 +0100 Message-Id: <20200319123909.159890961@linuxfoundation.org> X-Mailer: git-send-email 2.25.2 In-Reply-To: <20200319123902.941451241@linuxfoundation.org> References: <20200319123902.941451241@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 [ Upstream commit f596c87005f7b1baeb7d62d9a9e25d68c3dfae10 ] 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 Signed-off-by: Sasha Levin --- drivers/net/slip/slip.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/slip/slip.c b/drivers/net/slip/slip.c index 93f303ec17e21..5d864f8129556 100644 --- a/drivers/net/slip/slip.c +++ b/drivers/net/slip/slip.c @@ -863,7 +863,10 @@ static int slip_open(struct tty_struct *tty) tty->disc_data = NULL; clear_bit(SLF_INUSE, &sl->flags); sl_free_netdev(sl->dev); + /* do not call free_netdev before rtnl_unlock */ + rtnl_unlock(); free_netdev(sl->dev); + return err; err_exit: rtnl_unlock();