From owner-svn-src-all@freebsd.org Tue Dec 1 16:34:44 2020 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 27B934ADB4C; Tue, 1 Dec 2020 16:34:44 +0000 (UTC) (envelope-from kp@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) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 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 4ClnkX0LZYz4VgV; Tue, 1 Dec 2020 16:34:44 +0000 (UTC) (envelope-from kp@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 EEB8118D0A; Tue, 1 Dec 2020 16:34:43 +0000 (UTC) (envelope-from kp@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 0B1GYhCr087799; Tue, 1 Dec 2020 16:34:43 GMT (envelope-from kp@FreeBSD.org) Received: (from kp@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 0B1GYhUa087798; Tue, 1 Dec 2020 16:34:43 GMT (envelope-from kp@FreeBSD.org) Message-Id: <202012011634.0B1GYhUa087798@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kp set sender to kp@FreeBSD.org using -f From: Kristof Provost Date: Tue, 1 Dec 2020 16:34:43 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r368238 - head/sys/net X-SVN-Group: head X-SVN-Commit-Author: kp X-SVN-Commit-Paths: head/sys/net X-SVN-Commit-Revision: 368238 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Dec 2020 16:34:44 -0000 Author: kp Date: Tue Dec 1 16:34:43 2020 New Revision: 368238 URL: https://svnweb.freebsd.org/changeset/base/368238 Log: net: Revert vnet/epair cleanup race mitigation Revert the mitigation code for the vnet/epair cleanup race (done in r365457). r368237 introduced a more reliable fix. MFC after: 2 weeks Sponsored by: Modirum MDPay Modified: head/sys/net/if.c head/sys/net/if_epair.c Modified: head/sys/net/if.c ============================================================================== --- head/sys/net/if.c Tue Dec 1 16:23:59 2020 (r368237) +++ head/sys/net/if.c Tue Dec 1 16:34:43 2020 (r368238) @@ -1338,11 +1338,6 @@ if_vmove(struct ifnet *ifp, struct vnet *new_vnet) ifindex_free_locked(ifp->if_index); IFNET_WUNLOCK(); - - /* Don't re-attach DYING interfaces. */ - if (ifp->if_flags & IFF_DYING) - return (0); - /* * Perform interface-specific reassignment tasks, if provided by * the driver. Modified: head/sys/net/if_epair.c ============================================================================== --- head/sys/net/if_epair.c Tue Dec 1 16:23:59 2020 (r368237) +++ head/sys/net/if_epair.c Tue Dec 1 16:34:43 2020 (r368238) @@ -611,14 +611,8 @@ epair_qflush(struct ifnet *ifp) struct epair_softc *sc; sc = ifp->if_softc; - - /* - * See epair_clone_destroy(), we can end up getting called twice. - * Don't do anything on the second call. - */ - if (sc == NULL) - return; - + KASSERT(sc != NULL, ("%s: ifp=%p, epair_softc gone? sc=%p\n", + __func__, ifp, sc)); /* * Remove this ifp from all backpointer lists. The interface will not * usable for flushing anyway nor should it have anything to flush