Commit ee11f7a8 authored by Gonglei's avatar Gonglei Committed by Paolo Bonzini
Browse files

pci-assign: Fix a bug when map MSI-X table memory failed 



When mmapping memory for the MSI-X table failsthe dev->msix_table is
not set to NULL and assigned_dev_unregister_msix_mmio() will cause
a segfault when trying to munmap it.

Signed-off-by: default avatarGonglei Arei <arei.gonglei@huawei.com>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>

Signed-off-by: default avatarGonglei <arei.gonglei@huawei.com>
parent ada4135f

hw/i386/kvm/pci-assign.c

+1 −0
Original line number Diff line number Diff line
@@ -1664,6 +1664,7 @@ static void assigned_dev_register_msix_mmio(AssignedDevice *dev, Error **errp) 
                           MAP_ANONYMOUS|MAP_PRIVATE, 0, 0);

    if (dev->msix_table == MAP_FAILED) {

        error_setg_errno(errp, errno, "failed to allocate msix_table");

        dev->msix_table = NULL;

        return;

    }