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-rw-r--r--xen/xsm/flask/hooks.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/xen/xsm/flask/hooks.c b/xen/xsm/flask/hooks.c
index 85d009c42b..29a78dd06e 100644
--- a/xen/xsm/flask/hooks.c
+++ b/xen/xsm/flask/hooks.c
@@ -110,7 +110,7 @@ static int get_irq_sid(int irq, u32 *sid, struct avc_audit_data *ad)
}
return security_irq_sid(irq, sid);
}
- if ( desc->msi_desc ) {
+ if ( desc->msi_desc && desc->msi_desc->dev ) {
struct pci_dev *dev = desc->msi_desc->dev;
u32 sbdf = (dev->seg << 16) | (dev->bus << 8) | dev->devfn;
if (ad) {