From owner-dev-commits-src-all@freebsd.org Sun Jun 20 16:18:31 2021 Return-Path: Delivered-To: dev-commits-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 5CA2E65430A; Sun, 20 Jun 2021 16:18:31 +0000 (UTC) (envelope-from git@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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4G7Hry70H9z3qQ9; Sun, 20 Jun 2021 16:18:26 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (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 did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 1983A4C49; Sun, 20 Jun 2021 16:18:24 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 15KGINhc079741; Sun, 20 Jun 2021 16:18:23 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 15KGINOK079740; Sun, 20 Jun 2021 16:18:23 GMT (envelope-from git) Date: Sun, 20 Jun 2021 16:18:23 GMT Message-Id: <202106201618.15KGINOK079740@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Mike Karels Subject: git: 13604fb0fd43 - main - genet: Fix potential crash during attach MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: karels X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 13604fb0fd43c85e6bb3a0ad6400a684f150bdea Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for all branches of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 20 Jun 2021 16:18:31 -0000 The branch main has been updated by karels: URL: https://cgit.FreeBSD.org/src/commit/?id=13604fb0fd43c85e6bb3a0ad6400a684f150bdea commit 13604fb0fd43c85e6bb3a0ad6400a684f150bdea Author: Mike Karels AuthorDate: 2021-06-20 16:10:26 +0000 Commit: Mike Karels CommitDate: 2021-06-20 16:17:13 +0000 genet: Fix potential crash during attach As pointed out in the bug, the genet driver (RPi4 Ethernet) was attaching the interrupts before the data structures were fully initialized, causing a crash if an interrupt came in during the attach. Fix by reordering code blocks. PR: 256334 Reported by: < ghuckriede at blackberry.com > Reviewed by: < ghuckriede at blackberry.com > (informally) MFC after: 3 days --- sys/arm64/broadcom/genet/if_genet.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) diff --git a/sys/arm64/broadcom/genet/if_genet.c b/sys/arm64/broadcom/genet/if_genet.c index d0fe2b0d5e71..5d70c7075c3a 100644 --- a/sys/arm64/broadcom/genet/if_genet.c +++ b/sys/arm64/broadcom/genet/if_genet.c @@ -279,21 +279,6 @@ gen_attach(device_t dev) goto fail; } - /* Install interrupt handlers */ - error = bus_setup_intr(dev, sc->res[_RES_IRQ1], - INTR_TYPE_NET | INTR_MPSAFE, NULL, gen_intr, sc, &sc->ih); - if (error != 0) { - device_printf(dev, "cannot setup interrupt handler1\n"); - goto fail; - } - - error = bus_setup_intr(dev, sc->res[_RES_IRQ2], - INTR_TYPE_NET | INTR_MPSAFE, NULL, gen_intr2, sc, &sc->ih2); - if (error != 0) { - device_printf(dev, "cannot setup interrupt handler2\n"); - goto fail; - } - /* Setup ethernet interface */ sc->ifp = if_alloc(IFT_ETHER); if_setsoftc(sc->ifp, sc); @@ -310,6 +295,21 @@ gen_attach(device_t dev) IFCAP_HWCSUM_IPV6); if_setcapenable(sc->ifp, if_getcapabilities(sc->ifp)); + /* Install interrupt handlers */ + error = bus_setup_intr(dev, sc->res[_RES_IRQ1], + INTR_TYPE_NET | INTR_MPSAFE, NULL, gen_intr, sc, &sc->ih); + if (error != 0) { + device_printf(dev, "cannot setup interrupt handler1\n"); + goto fail; + } + + error = bus_setup_intr(dev, sc->res[_RES_IRQ2], + INTR_TYPE_NET | INTR_MPSAFE, NULL, gen_intr2, sc, &sc->ih2); + if (error != 0) { + device_printf(dev, "cannot setup interrupt handler2\n"); + goto fail; + } + /* Attach MII driver */ mii_flags = 0; switch (sc->phy_mode)