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intel-iommu: Fix get_domain_for_dev() error path 

If we run out of domain_ids and fail iommu_attach_domain(), we
fall into domain_exit() without having setup enough of the
domain structure for this to do anything useful.  In fact, it
typically runs off into the weeds walking the bogus domain->devices
list.  Just free the domain.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Donald Dutile <ddutile@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: stable@kernel.org
hifive-unleashed-5.1
Alex Williamson 2011-03-04 14:52:30 -07:00 committed by David Woodhouse
parent a97590e56d
commit 2fe9723df8
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/intel-iommu.c
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@ -1835,7 +1835,7 @@ static struct dmar_domain *get_domain_for_dev(struct pci_dev *pdev, int gaw)
ret = iommu_attach_domain(domain, iommu);
if (ret) {
domain_exit(domain);
free_domain_mem(domain);
goto error;
}