From owner-svn-src-all@freebsd.org Tue Sep 3 14:06:00 2019 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 B8145DBF4B; Tue, 3 Sep 2019 14:05:50 +0000 (UTC) (envelope-from yuripv@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [96.47.72.132]) (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 "freefall.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46N7yj5djRz4Ntb; Tue, 3 Sep 2019 14:05:49 +0000 (UTC) (envelope-from yuripv@freebsd.org) Received: by freefall.freebsd.org (Postfix, from userid 1452) id DD14819C7D; Tue, 3 Sep 2019 14:05:48 +0000 (UTC) X-Original-To: yuripv@localmail.freebsd.org Delivered-To: yuripv@localmail.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [96.47.72.80]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mx1.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by freefall.freebsd.org (Postfix) with ESMTPS id 63DD31A2D8; 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Thu, 28 Mar 2019 20:43:47 +0000 (UTC) (envelope-from erj@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 8FCD924844; Thu, 28 Mar 2019 20:43:47 +0000 (UTC) (envelope-from erj@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x2SKhlj3085265; Thu, 28 Mar 2019 20:43:47 GMT (envelope-from erj@FreeBSD.org) Received: (from erj@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x2SKhllZ085264; Thu, 28 Mar 2019 20:43:47 GMT (envelope-from erj@FreeBSD.org) Message-Id: <201903282043.x2SKhllZ085264@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: erj set sender to erj@FreeBSD.org using -f From: Eric Joyner To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r345657 - head/sys/net X-SVN-Group: head X-SVN-Commit-Author: erj X-SVN-Commit-Paths: head/sys/net X-SVN-Commit-Revision: 345657 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk X-Loop: FreeBSD.org Sender: owner-src-committers@freebsd.org X-Rspamd-Queue-Id: 1C62B8B2B2 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.94 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.995,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.94)[-0.945,0]; ASN(0.00)[asn:11403, ipnet:96.47.64.0/20, country:US] Status: O X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 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: , Date: Tue, 03 Sep 2019 14:06:01 -0000 X-Original-Date: Thu, 28 Mar 2019 20:43:47 +0000 (UTC) X-List-Received-Date: Tue, 03 Sep 2019 14:06:01 -0000 Author: erj Date: Thu Mar 28 20:43:47 2019 New Revision: 345657 URL: https://svnweb.freebsd.org/changeset/base/345657 Log: iflib: hold the CTX lock in iflib_pseudo_register From Jake: The iflib_device_register function takes the CTX lock before calling IFDI_ATTACH_PRE, and releases it upon finishing the registration. Mirror this process in iflib_pseudo_register, so that we always hold the CTX lock during the attach process when registering a pseudo interface or a regular interface. This was caught by code inspection while attempting to analyze where the CTX lock was held. Submitted by: Jacob Keller Reviewed by: shurd@, erj@ MFC after: 1 week Sponsored by: Intel Corporation Differential Revision: https://reviews.freebsd.org/D19604 Modified: head/sys/net/iflib.c Modified: head/sys/net/iflib.c ============================================================================== --- head/sys/net/iflib.c Thu Mar 28 20:41:02 2019 (r345656) +++ head/sys/net/iflib.c Thu Mar 28 20:43:47 2019 (r345657) @@ -4662,10 +4662,10 @@ iflib_pseudo_register(device_t dev, if_shared_ctx_t sc * XXX sanity check that ntxd & nrxd are a power of 2 */ iflib_reset_qvalues(ctx); - + CTX_LOCK(ctx); if ((err = IFDI_ATTACH_PRE(ctx)) != 0) { device_printf(dev, "IFDI_ATTACH_PRE failed %d\n", err); - goto fail_ctx_free; + goto fail_unlock; } if (sctx->isc_flags & IFLIB_GEN_MAC) iflib_gen_mac(ctx); @@ -4819,6 +4819,7 @@ iflib_pseudo_register(device_t dev, if_shared_ctx_t sc if_setgetcounterfn(ctx->ifc_ifp, iflib_if_get_counter); iflib_add_device_sysctl_post(ctx); ctx->ifc_flags |= IFC_INIT_DONE; + CTX_UNLOCK(ctx); return (0); fail_detach: ether_ifdetach(ctx->ifc_ifp); @@ -4827,6 +4828,8 @@ fail_queues: iflib_rx_structures_free(ctx); fail_iflib_detach: IFDI_DETACH(ctx); +fail_unlock: + CTX_UNLOCK(ctx); fail_ctx_free: free(ctx->ifc_softc, M_IFLIB); free(ctx, M_IFLIB);