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vfio/spapr_tce: Check kzalloc() return when preregistering memory 

This adds missing checking for kzalloc() return value.

Fixes: 4b6fad7097 ("powerpc/mm/iommu, vfio/spapr: Put pages on VFIO container shutdown")
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Alexey Kardashevskiy 2017-03-27 14:23:40 +11:00 committed by Alex Williamson
parent 1282ba7fc2
commit 3393af24b6
1 changed files with 5 additions and 0 deletions
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5
drivers/vfio/vfio_iommu_spapr_tce.c
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@ -198,6 +198,11 @@ static long tce_iommu_register_pages(struct tce_container *container,
return ret;
tcemem = kzalloc(sizeof(*tcemem), GFP_KERNEL);
if (!tcemem) {
mm_iommu_put(container->mm, mem);
return -ENOMEM;
}
tcemem->mem = mem;
list_add(&tcemem->next, &container->prereg_list);