deadlock potential with VT-d and legacy PCI device pass-through
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When setting up interrupt remapping for legacy PCI(-X) devices, including PCI(-X) bridges, a lookup of the upstream bridge is required. This lookup, itself involving acquiring of a lock, is done in a context where acquiring that lock is unsafe. This can lead to a deadlock.
No remediation guidance has been written for this CVE yet. What the record does show:
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