Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / arch / powerpc / mm / copro_fault.c

diff --git a/kernel/arch/powerpc/mm/copro_fault.c b/kernel/arch/powerpc/mm/copro_fault.c
index 6527882..ddfd274 100644 (file)
--- a/kernel/arch/powerpc/mm/copro_fault.c
+++ b/kernel/arch/powerpc/mm/copro_fault.c
@@ -106,6 +106,8 @@ int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb)
        switch (REGION_ID(ea)) {
        case USER_REGION_ID:
                pr_devel("%s: 0x%llx -- USER_REGION_ID\n", __func__, ea);
+               if (mm == NULL)
+                       return 1;
                psize = get_slice_psize(mm, ea);
                ssize = user_segment_size(ea);
                vsid = get_vsid(mm->context.id, ea, ssize);