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path: root/arch/um/kernel/skas/mmu.c
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Diffstat (limited to 'arch/um/kernel/skas/mmu.c')
-rw-r--r--arch/um/kernel/skas/mmu.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c
index b5e3d91fc9c2..3f0d9a573fd6 100644
--- a/arch/um/kernel/skas/mmu.c
+++ b/arch/um/kernel/skas/mmu.c
@@ -19,15 +19,21 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc,
unsigned long kernel)
{
pgd_t *pgd;
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
pgd = pgd_offset(mm, proc);
- pud = pud_alloc(mm, pgd, proc);
- if (!pud)
+
+ p4d = p4d_alloc(mm, pgd, proc);
+ if (!p4d)
goto out;
+ pud = pud_alloc(mm, p4d, proc);
+ if (!pud)
+ goto out_pud;
+
pmd = pmd_alloc(mm, pud, proc);
if (!pmd)
goto out_pmd;
@@ -44,6 +50,8 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc,
pmd_free(mm, pmd);
out_pmd:
pud_free(mm, pud);
+ out_pud:
+ p4d_free(mm, p4d);
out:
return -ENOMEM;
}