diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2020-05-19 05:48:45 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-05-20 23:41:02 +1000 |
| commit | d2a91cef9bbdeb87b7449fdab1a6be6000930210 (patch) | |
| tree | 6e938f42ddbb0115d5fe5a07c5bca54546f53c4c /arch/powerpc/mm | |
| parent | 3a66a24f6060e6775f8c02ac52329ea0152d7e58 (diff) | |
| download | linux-next-d2a91cef9bbdeb87b7449fdab1a6be6000930210.tar.gz | |
powerpc/kasan: Fix shadow pages allocation failure
Doing kasan pages allocation in MMU_init is too early, kernel doesn't
have access yet to the entire memory space and memblock_alloc() fails
when the kernel is a bit big.
Do it from kasan_init() instead.
Fixes: 2edb16efc899 ("powerpc/32: Add KASAN support")
Cc: stable@vger.kernel.org
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/c24163ee5d5f8cdf52fefa45055ceb35435b8f15.1589866984.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/init_32.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/mm/kasan/kasan_init_32.c | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c index 872df48ae41b..a6991ef8727d 100644 --- a/arch/powerpc/mm/init_32.c +++ b/arch/powerpc/mm/init_32.c @@ -170,8 +170,6 @@ void __init MMU_init(void) btext_unmap(); #endif - kasan_mmu_init(); - setup_kup(); /* Shortly after that, the entire linear mapping will be available */ diff --git a/arch/powerpc/mm/kasan/kasan_init_32.c b/arch/powerpc/mm/kasan/kasan_init_32.c index 8b15fe09b967..b7c287adfd59 100644 --- a/arch/powerpc/mm/kasan/kasan_init_32.c +++ b/arch/powerpc/mm/kasan/kasan_init_32.c @@ -131,7 +131,7 @@ static void __init kasan_unmap_early_shadow_vmalloc(void) flush_tlb_kernel_range(k_start, k_end); } -void __init kasan_mmu_init(void) +static void __init kasan_mmu_init(void) { int ret; struct memblock_region *reg; @@ -159,6 +159,8 @@ void __init kasan_mmu_init(void) void __init kasan_init(void) { + kasan_mmu_init(); + kasan_remap_early_shadow_ro(); clear_page(kasan_early_shadow_page); |