4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexey Kardashevskiy <aik@xxxxxxxxx>
[ Upstream commit 3393af24b665cb0aea7353b05e522b03ab1e7d73 ]
This adds missing checking for kzalloc() return value.
Fixes: 4b6fad7097f8 ("powerpc/mm/iommu, vfio/spapr: Put pages on VFIO container shutdown")
Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx>
Reviewed-by: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/vfio/vfio_iommu_spapr_tce.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/vfio/vfio_iommu_spapr_tce.c
+++ b/drivers/vfio/vfio_iommu_spapr_tce.c
@@ -195,6 +195,11 @@ static long tce_iommu_register_pages(str
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);