[Qemu-devel] [PULL 3/8] pci-assign: Fix a bug when map MSI-X table memory failed

[Paolo Bonzini <pbonzini@redhat.com>]

From: Gonglei <arei.gonglei@huawei.com>

when map MSI-X table memory failed, the dev->msix_table not be
set to NULL, the assigned_dev_unregister_msix_mmio() will case
a segfault when munmap the failed dev->msix_table.

Signed-off-by: Gonglei Arei <arei.gonglei@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/i386/kvm/pci-assign.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/i386/kvm/pci-assign.c b/hw/i386/kvm/pci-assign.c
index a825871..570333f 100644
--- a/hw/i386/kvm/pci-assign.c
+++ b/hw/i386/kvm/pci-assign.c
@@ -1608,6 +1608,7 @@ static int assigned_dev_register_msix_mmio(AssignedDevice *dev)
                            MAP_ANONYMOUS|MAP_PRIVATE, 0, 0);
     if (dev->msix_table == MAP_FAILED) {
         error_report("fail allocate msix_table! %s", strerror(errno));
+        dev->msix_table = NULL;
         return -EFAULT;
     }
 
-- 
1.8.3.1