From nobody Fri Oct 29 08:31:39 2021 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 85CDD1826847; Fri, 29 Oct 2021 08:31:39 +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 4HgbHv3MjSz4SpZ; Fri, 29 Oct 2021 08:31:39 +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 53F831401A; Fri, 29 Oct 2021 08:31:39 +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 19T8Vdil073735; Fri, 29 Oct 2021 08:31:39 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 19T8Vdcl073734; Fri, 29 Oct 2021 08:31:39 GMT (envelope-from git) Date: Fri, 29 Oct 2021 08:31:39 GMT Message-Id: <202110290831.19T8Vdcl073734@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Wojciech Macek Subject: git: 3c02da8096b1 - main - dmar: Don't try to reserve PCI regions for non-existing devices List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: wma X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 3c02da8096b142ef243da8da667c3a5a7d591105 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by wma: URL: https://cgit.FreeBSD.org/src/commit/?id=3c02da8096b142ef243da8da667c3a5a7d591105 commit 3c02da8096b142ef243da8da667c3a5a7d591105 Author: Kornel Duleba AuthorDate: 2021-10-21 12:46:51 +0000 Commit: Wojciech Macek CommitDate: 2021-10-29 08:08:25 +0000 dmar: Don't try to reserve PCI regions for non-existing devices In some cases we might have to create DMAR context before the corresponding device has been enumerated by the PCI bus. In that case we get called with NULL dev, because of that trying to reserve PCI regions causes a NULL pointer dereference in pci_find_pcie_root_port. Sponsored by: Stormshield Obtained from: Semihalf MFC after: 2 weeks Reviewed by: kib, rlibby Differential revision: https://reviews.freebsd.org/D32589 --- sys/x86/iommu/intel_ctx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/x86/iommu/intel_ctx.c b/sys/x86/iommu/intel_ctx.c index 34730306000b..7aedbf159ac7 100644 --- a/sys/x86/iommu/intel_ctx.c +++ b/sys/x86/iommu/intel_ctx.c @@ -561,7 +561,7 @@ dmar_get_ctx_for_dev1(struct dmar_unit *dmar, device_t dev, uint16_t rid, error = domain_init_rmrr(domain1, dev, bus, slot, func, dev_domain, dev_busno, dev_path, dev_path_len); - if (error == 0) + if (error == 0 && dev != NULL) error = dmar_reserve_pci_regions(domain1, dev); if (error != 0) { dmar_domain_destroy(domain1);