Hi Jerry,
On Mon, Jun 01, 2020 at 05:02:36PM -0700, Jerry Snitselaar wrote:
>
> Yeah, that will solve the panic.
>
If you still see the kdump faults, can you please try with the attached
diff? I was not able to reproduce them in my setup.
Regards,
Joerg
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index b5ea203f6c68..5a6d509f72b6 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1680,8 +1680,12 @@ static void probe_alloc_default_domain(struct bus_type *bus,
static int iommu_group_do_dma_attach(struct device *dev, void *data)
{
struct iommu_domain *domain = data;
+ int ret = 0;
- return __iommu_attach_device(domain, dev);
+ if (!iommu_is_attach_deferred(group->domain, dev))
+ ret = __iommu_attach_device(group->domain, dev);
+
+ return ret;
}
static int __iommu_group_dma_attach(struct iommu_group *group)
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