From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43452) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dssBH-0005Gk-8d for qemu-devel@nongnu.org; Fri, 15 Sep 2017 11:05:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dssBB-0002ju-Ew for qemu-devel@nongnu.org; Fri, 15 Sep 2017 11:05:23 -0400 Received: from mx1.redhat.com ([209.132.183.28]:45126) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dssBB-0002je-8U for qemu-devel@nongnu.org; Fri, 15 Sep 2017 11:05:17 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5FCEBC047B9B for ; Fri, 15 Sep 2017 15:05:16 +0000 (UTC) From: Mohammed Gamal Date: Fri, 15 Sep 2017 17:04:35 +0200 Message-Id: <1505487877-22799-1-git-send-email-mgamal@redhat.com> Subject: [Qemu-devel] [PATCH v2 0/2] x86_iommu: Fix segfault when starting on non-PCI machines List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: ehabkost@redhat.com, mst@redhat.com, thuth@redhat.com, peterx@redhat.com, pbonzini@redhat.com, Mohammed Gamal Starting qemu with qemu-system-x86_64 -S -M isapc -device {amd|intel}-iommu leads to a segfault. The code assume PCI bus is present and tries to access the bus structure without checking. The patch series moves the error checks from vtd_realize() and amdvi_realize() to the generic x86_iommu_realize() and adds a check for PCI bus presence. v1 --> v2: * Change error message with capitalized acronym Mohammed Gamal (2): x86_iommu: Move machine check to x86_iommu_realize() x86_iommu: check if machine has PCI bus hw/i386/amd_iommu.c | 10 +--------- hw/i386/intel_iommu.c | 10 +--------- hw/i386/x86-iommu.c | 13 +++++++++++++ 3 files changed, 15 insertions(+), 18 deletions(-) -- 1.8.3.1