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787d563b86
linux/mm
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Aneesh Kumar K.V 787d563b86 mm/debug_vm_pgtable: fix kernel crash by checking for THP support 
Architectures can have CONFIG_TRANSPARENT_HUGEPAGE enabled but no THP
support enabled based on platforms.  For ex: with 4K PAGE_SIZE ppc64
supports THP only with radix translation.

This results in below crash when running with hash translation and 4K
PAGE_SIZE.

    kernel BUG at arch/powerpc/include/asm/book3s/64/hash-4k.h:140!
    cpu 0x61: Vector: 700 (Program Check) at [c000000ff948f860]
        pc: debug_vm_pgtable+0x480/0x8b0
        lr: debug_vm_pgtable+0x474/0x8b0
    ...
        debug_vm_pgtable+0x374/0x8b0 (unreliable)
        do_one_initcall+0x98/0x4f0
        kernel_init_freeable+0x330/0x3fc
        kernel_init+0x24/0x148

Check for THP support correctly

Link: http://lkml.kernel.org/r/20200608125252.407659-1-aneesh.kumar@linux.ibm.com
Fixes: 399145f9eb ("mm/debug: add tests validating architecture page table helpers")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-10 19:14:18 -07:00
..
kasan mm: remove __ARCH_HAS_5LEVEL_HACK and include/asm-generic/5level-fixup.h 2020-06-04 19:06:21 -07:00
backing-dev.c
balloon_compaction.c
cleancache.c
cma_debug.c
cma.c
cma.h
compaction.c mm/compaction: fix a typo in comment "pessemistic"->"pessimistic" 2020-06-04 19:06:23 -07:00
debug_page_ref.c
debug_vm_pgtable.c mm/debug_vm_pgtable: fix kernel crash by checking for THP support 2020-06-10 19:14:18 -07:00
debug.c maccess: always use strict semantics for probe_kernel_read 2020-06-09 09:39:15 -07:00
dmapool.c
early_ioremap.c
fadvise.c
failslab.c
filemap.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
frame_vector.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
frontswap.c mm/frontswap: fix some typos in frontswap.c 2020-06-04 19:06:24 -07:00
gup_benchmark.c
gup.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
highmem.c
hmm.c mmap locking API: add mmap_assert_locked() and mmap_assert_write_locked() 2020-06-09 09:39:14 -07:00
huge_memory.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
hugetlb_cgroup.c
hugetlb.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
hwpoison-inject.c
init-mm.c mmap locking API: add MMAP_LOCK_INITIALIZER 2020-06-09 09:39:14 -07:00
internal.h mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
interval_tree.c
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next 2020-06-07 17:25:29 -07:00
Kconfig.debug mm: add DEBUG_WX support 2020-06-03 20:09:49 -07:00
khugepaged.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
kmemleak-test.c
kmemleak.c
ksm.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
list_lru.c mm/list_lru: fix a typo in comment "numbesr"->"numbers" 2020-06-04 19:06:24 -07:00
maccess.c maccess: return -ERANGE when probe_kernel_read() fails 2020-06-09 09:39:16 -07:00
madvise.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
Makefile mm/debug: add tests validating architecture page table helpers 2020-06-04 19:06:21 -07:00
mapping_dirty_helpers.c
memblock.c mm/memblock: fix a typo in comment "implict"->"implicit" 2020-06-04 19:06:23 -07:00
memcontrol.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
memfd.c
memory_hotplug.c mm/memory_hotplug: fix a typo in comment "recoreded"->"recorded" 2020-06-04 19:06:23 -07:00
memory-failure.c
memory.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
mempolicy.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
mempool.c
memremap.c
memtest.c
migrate.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
mincore.c mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
mlock.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
mm_init.c
mmap.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
mmu_context.c
mmu_gather.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
mmu_notifier.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
mmzone.c
mprotect.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
mremap.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
msync.c mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
nommu.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
oom_kill.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
page_alloc.c kernel/sysctl: support handling command line aliases 2020-06-08 11:05:56 -07:00
page_counter.c
page_ext.c
page_idle.c mm/page_idle.c: skip offline pages 2020-06-08 11:05:55 -07:00
page_io.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
page_isolation.c
page_owner.c mm: rename gfpflags_to_migratetype to gfp_migratetype for same convention 2020-06-03 20:09:45 -07:00
page_poison.c
page_reporting.c
page_reporting.h mm: introduce include/linux/pgtable.h 2020-06-09 09:39:13 -07:00
page_vma_mapped.c
page-writeback.c mm/page-writeback: fix a typo in comment "effictive"->"effective" 2020-06-04 19:06:24 -07:00
pagewalk.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
percpu-internal.h
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c
pgtable-generic.c mm: introduce include/linux/pgtable.h 2020-06-09 09:39:13 -07:00
process_vm_access.c mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
ptdump.c mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
readahead.c
rmap.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
rodata_test.c
shmem.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
shuffle.c
shuffle.h
slab_common.c
slab.c
slab.h
slob.c
slub.c mm/slub: fix a typo in comment "disambiguiation"->"disambiguation" 2020-06-04 19:06:24 -07:00
sparse-vmemmap.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sparse.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
swap_cgroup.c mm: memcontrol: make swap tracking an integral part of memory control 2020-06-03 20:09:48 -07:00
swap_slots.c
swap_state.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
swap.c mm: swap: memcg: fix memcg stats for huge pages 2020-06-03 20:09:49 -07:00
swapfile.c mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
truncate.c
usercopy.c
userfaultfd.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
util.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
vmacache.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
vmalloc.c mm/vmalloc: fix a typo in comment 2020-06-04 19:06:21 -07:00
vmpressure.c
vmscan.c mm/vmsan: fix some typos in comment 2020-06-04 19:06:23 -07:00
vmstat.c mm/vmstat.c: convert to use DEFINE_SEQ_ATTRIBUTE macro 2020-06-04 19:06:26 -07:00
workingset.c mm: vmscan: reclaim writepage is IO cost 2020-06-03 20:09:49 -07:00
z3fold.c
zbud.c mm: use false for bool variable 2020-06-04 19:06:24 -07:00
zpool.c
zsmalloc.c mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
zswap.c