[PATCH 12/31] mm/vmalloc: vmalloc_to_page() use pte_offset_kernel()
From: Hugh Dickins
Date: Mon May 22 2023 - 01:04:16 EST
vmalloc_to_page() was using pte_offset_map() (followed by pte_unmap()),
but it's intended for userspace page tables: prefer pte_offset_kernel().
Signed-off-by: Hugh Dickins <hughd@xxxxxxxxxx>
---
mm/vmalloc.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 9683573f1225..741722d247d5 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -703,11 +703,10 @@ struct page *vmalloc_to_page(const void *vmalloc_addr)
if (WARN_ON_ONCE(pmd_bad(*pmd)))
return NULL;
- ptep = pte_offset_map(pmd, addr);
+ ptep = pte_offset_kernel(pmd, addr);
pte = *ptep;
if (pte_present(pte))
page = pte_page(pte);
- pte_unmap(ptep);
return page;
}
--
2.35.3