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[Qemu-devel] [PULL 03/15] pci-assign: Fix a bug when map MSI-X table mem


From: Paolo Bonzini
Subject: [Qemu-devel] [PULL 03/15] pci-assign: Fix a bug when map MSI-X table memory failed
Date: Tue, 13 May 2014 14:57:12 +0200

From: Gonglei <address@hidden>

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: Gonglei Arei <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>

Signed-off-by: Gonglei <address@hidden>
---
 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 e55421a..0572821 100644
--- a/hw/i386/kvm/pci-assign.c
+++ b/hw/i386/kvm/pci-assign.c
@@ -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;
     }
 
-- 
1.8.3.1





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