From owner-svn-src-stable@freebsd.org Tue Mar 26 13:33:37 2019 Return-Path: Delivered-To: svn-src-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C61991552900; Tue, 26 Mar 2019 13:33:37 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6AEC86AC3E; Tue, 26 Mar 2019 13:33:37 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 41AFF20704; Tue, 26 Mar 2019 13:33:37 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x2QDXbUK030683; Tue, 26 Mar 2019 13:33:37 GMT (envelope-from hselasky@FreeBSD.org) Received: (from hselasky@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x2QDXbqU030682; Tue, 26 Mar 2019 13:33:37 GMT (envelope-from hselasky@FreeBSD.org) Message-Id: <201903261333.x2QDXbqU030682@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: hselasky set sender to hselasky@FreeBSD.org using -f From: Hans Petter Selasky Date: Tue, 26 Mar 2019 13:33:37 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r345531 - stable/12/sys/dev/mlx4/mlx4_en X-SVN-Group: stable-12 X-SVN-Commit-Author: hselasky X-SVN-Commit-Paths: stable/12/sys/dev/mlx4/mlx4_en X-SVN-Commit-Revision: 345531 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 6AEC86AC3E X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.96 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.96)[-0.958,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Mar 2019 13:33:38 -0000 Author: hselasky Date: Tue Mar 26 13:33:36 2019 New Revision: 345531 URL: https://svnweb.freebsd.org/changeset/base/345531 Log: MFC r344919: Don't hold state lock while detaching network device instance in mlx4en(4). It can happen during shutdown that the lock will recurse when the mlx4en(4) instance is part of a lagg interface. Call ether_ifdetach() unlocked. Backtrace: panic(): _sx_xlock_hard: recursed on non-recursive sx &mdev->state_lock _sx_xlock_hard() _sx_xlock() mlx4_en_ioctl() if_setlladdr() lagg_port_destroy() lagg_port_ifdetach() if_detach() mlx4_en_destroy_netdev() mlx4_en_remove() mlx4_remove_device() mlx4_unregister_device() mlx4_unload_one() mlx4_shutdown() linux_pci_shutdown() bus_generic_shutdown() Sponsored by: Mellanox Technologies Modified: stable/12/sys/dev/mlx4/mlx4_en/mlx4_en_netdev.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/dev/mlx4/mlx4_en/mlx4_en_netdev.c ============================================================================== --- stable/12/sys/dev/mlx4/mlx4_en/mlx4_en_netdev.c Tue Mar 26 11:03:09 2019 (r345530) +++ stable/12/sys/dev/mlx4/mlx4_en/mlx4_en_netdev.c Tue Mar 26 13:33:36 2019 (r345531) @@ -1779,11 +1779,8 @@ void mlx4_en_destroy_netdev(struct net_device *dev) EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach); /* Unregister device - this will close the port if it was up */ - if (priv->registered) { - mutex_lock(&mdev->state_lock); + if (priv->registered) ether_ifdetach(dev); - mutex_unlock(&mdev->state_lock); - } mutex_lock(&mdev->state_lock); mlx4_en_stop_port(dev);