From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46507) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e41Mc-0001cB-Ro for qemu-devel@nongnu.org; Mon, 16 Oct 2017 05:07:15 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e41MX-0000HN-D3 for qemu-devel@nongnu.org; Mon, 16 Oct 2017 05:07:10 -0400 Received: from mx1.redhat.com ([209.132.183.28]:52424) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e41MX-0000H3-70 for qemu-devel@nongnu.org; Mon, 16 Oct 2017 05:07:05 -0400 From: Mohammed Gamal Date: Mon, 16 Oct 2017 11:06:21 +0200 Message-Id: <1508144783-18792-1-git-send-email-mgamal@redhat.com> Subject: [Qemu-devel] [PATCH RESEND 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: thuth@redhat.com, ehabkost@redhat.com, peterx@redhat.com, pbonzini@redhat.com, mst@redhat.com, mjt@tls.msk.ru, 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. 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 | 13 ++----------- hw/i386/intel_iommu.c | 13 ++----------- hw/i386/x86-iommu.c | 13 +++++++++++++ 3 files changed, 17 insertions(+), 22 deletions(-) -- 1.8.3.1