Hi Joerg,
On 2020-05-25 18:32, Joerg Roedel wrote:
Hi,
On Fri, May 22, 2020 at 06:31:45PM +0530, Sai Prakash Ranjan wrote:
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index a4c2f122eb8b..05f7b77c432f 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1491,6 +1491,7 @@ static int iommu_alloc_default_domain(struct
device *dev)
{
struct iommu_group *group;
unsigned int type;
+ int ret;
group = iommu_group_get(dev);
if (!group)
@@ -1501,7 +1502,11 @@ static int iommu_alloc_default_domain(struct
device *dev)
type = iommu_get_def_domain_type(dev);
- return iommu_group_alloc_default_domain(dev->bus, group, type);
+ ret = iommu_group_alloc_default_domain(dev->bus, group, type);
+
+ iommu_group_put(group);
+
+ return ret;
}
/**
Thanks for the report and the fix. I think it is better to fix this by
not taking a group reference in iommu_alloc_default_domain() at all and
pass group as a parameter. Please see the patch I just sent out.
Thanks for the patch, it looks like the right thing to do. Testing it
out now.
Thanks,
Sai
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