Commit af92bad6 authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman

powerpc/kasan: Fix kasan_remap_early_shadow_ro()

At the moment kasan_remap_early_shadow_ro() does nothing, because
k_end is 0 and k_cur < 0 is always true.

Change the test to k_cur != k_end, as done in
kasan_init_shadow_page_tables()
Signed-off-by: default avatarChristophe Leroy <christophe.leroy@c-s.fr>
Fixes: cbd18991 ("powerpc/mm: Fix an Oops in kasan_mmu_init()")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/4e7b56865e01569058914c991143f5961b5d4719.1583507333.git.christophe.leroy@c-s.fr
parent eb4f8e25
...@@ -101,7 +101,7 @@ static void __init kasan_remap_early_shadow_ro(void) ...@@ -101,7 +101,7 @@ static void __init kasan_remap_early_shadow_ro(void)
kasan_populate_pte(kasan_early_shadow_pte, prot); kasan_populate_pte(kasan_early_shadow_pte, prot);
for (k_cur = k_start & PAGE_MASK; k_cur < k_end; k_cur += PAGE_SIZE) { for (k_cur = k_start & PAGE_MASK; k_cur != k_end; k_cur += PAGE_SIZE) {
pmd_t *pmd = pmd_ptr_k(k_cur); pmd_t *pmd = pmd_ptr_k(k_cur);
pte_t *ptep = pte_offset_kernel(pmd, k_cur); pte_t *ptep = pte_offset_kernel(pmd, k_cur);
......
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