gup_p4d_range() should call gup_pud_range(), not itself.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Reported-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx>
Fixes: c2febafc6773 ("mm: convert generic code to 5-level paging")
---
mm/gup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/gup.c b/mm/gup.c
index c74bad1bf6e8..04aa405350dc 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1455,7 +1455,7 @@ static int gup_p4d_range(pgd_t pgd, unsigned long addr, unsigned long end,
if (!gup_huge_pd(__hugepd(p4d_val(p4d)), addr,
P4D_SHIFT, next, write, pages, nr))
return 0;
- } else if (!gup_p4d_range(p4d, addr, next, write, pages, nr))
+ } else if (!gup_pud_range(p4d, addr, next, write, pages, nr))
return 0;
} while (p4dp++, addr = next, addr != end);
--
2.11.0
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