From owner-svn-src-stable@freebsd.org Mon Jan 28 09:18:29 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 8613414ACC42; Mon, 28 Jan 2019 09:18:29 +0000 (UTC) (envelope-from vmaffione@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 2B47281C3D; Mon, 28 Jan 2019 09:18:29 +0000 (UTC) (envelope-from vmaffione@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 17CAB1D7CF; Mon, 28 Jan 2019 09:18:29 +0000 (UTC) (envelope-from vmaffione@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x0S9IS2m037505; Mon, 28 Jan 2019 09:18:28 GMT (envelope-from vmaffione@FreeBSD.org) Received: (from vmaffione@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x0S9IS9O037504; Mon, 28 Jan 2019 09:18:28 GMT (envelope-from vmaffione@FreeBSD.org) Message-Id: <201901280918.x0S9IS9O037504@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: vmaffione set sender to vmaffione@FreeBSD.org using -f From: Vincenzo Maffione Date: Mon, 28 Jan 2019 09:18:28 +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: r343521 - stable/12/sys/dev/netmap X-SVN-Group: stable-12 X-SVN-Commit-Author: vmaffione X-SVN-Commit-Paths: stable/12/sys/dev/netmap X-SVN-Commit-Revision: 343521 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 2B47281C3D X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.97 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.998,0]; NEURAL_HAM_SHORT(-0.97)[-0.969,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-0.999,0] 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: Mon, 28 Jan 2019 09:18:29 -0000 Author: vmaffione Date: Mon Jan 28 09:18:28 2019 New Revision: 343521 URL: https://svnweb.freebsd.org/changeset/base/343521 Log: MFC r343413 netmap: fix crash with monitors and VALE ports Crash report described here: https://github.com/luigirizzo/netmap/issues/583 Fixed by providing dummy sync callback in case it is missing. Modified: stable/12/sys/dev/netmap/netmap_monitor.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/dev/netmap/netmap_monitor.c ============================================================================== --- stable/12/sys/dev/netmap/netmap_monitor.c Mon Jan 28 08:36:10 2019 (r343520) +++ stable/12/sys/dev/netmap/netmap_monitor.c Mon Jan 28 09:18:28 2019 (r343521) @@ -259,11 +259,20 @@ static int netmap_monitor_parent_txsync(struct netmap_ static int netmap_monitor_parent_rxsync(struct netmap_kring *, int); static int netmap_monitor_parent_notify(struct netmap_kring *, int); +static int +nm_monitor_dummycb(struct netmap_kring *kring, int flags) +{ + (void)kring; + (void)flags; + return 0; +} + static void nm_monitor_intercept_callbacks(struct netmap_kring *kring) { ND("intercept callbacks on %s", kring->name); - kring->mon_sync = kring->nm_sync; + kring->mon_sync = kring->nm_sync != NULL ? + kring->nm_sync : nm_monitor_dummycb; kring->mon_notify = kring->nm_notify; if (kring->tx == NR_TX) { kring->nm_sync = netmap_monitor_parent_txsync;