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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2020-03-06 18:09:40 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-17 17:13:48 +0300 |
| commit | 3915e383f7cd70c2ccb885ae8c38568f172fd293 (patch) | |
| tree | 2fca777d71074e7fd9c1efb41f30bf8200558875 | |
| parent | 0678087c6134e2d7ded9b26780ed68759bb0fc6d (diff) | |
| download | linux-3915e383f7cd70c2ccb885ae8c38568f172fd293.tar.xz | |
powerpc/kasan: Fix kasan_remap_early_shadow_ro()
[ Upstream commit af92bad615be75c6c0d1b1c5b48178360250a187 ]
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: Christophe Leroy <christophe.leroy@c-s.fr>
Fixes: cbd18991e24f ("powerpc/mm: Fix an Oops in kasan_mmu_init()")
Cc: stable@vger.kernel.org
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/4e7b56865e01569058914c991143f5961b5d4719.1583507333.git.christophe.leroy@c-s.fr
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/powerpc/mm/kasan/kasan_init_32.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/kasan/kasan_init_32.c b/arch/powerpc/mm/kasan/kasan_init_32.c index d2bed3fcb719..1169ad1b6730 100644 --- a/arch/powerpc/mm/kasan/kasan_init_32.c +++ b/arch/powerpc/mm/kasan/kasan_init_32.c @@ -101,7 +101,7 @@ static void __init kasan_remap_early_shadow_ro(void) 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_offset(pud_offset(pgd_offset_k(k_cur), k_cur), k_cur); pte_t *ptep = pte_offset_kernel(pmd, k_cur); |