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Kees Cook 8c9a134cae mm: clarify CONFIG_PAGE_POISONING and usage 
The Kconfig text for CONFIG_PAGE_POISONING doesn't mention that it has to
be enabled explicitly.  This updates the documentation for that and adds a
note about CONFIG_PAGE_POISONING to the "page_poison" command line docs.
While here, change description of CONFIG_PAGE_POISONING_ZERO too, as it's
not "random" data, but rather the fixed debugging value that would be used
when not zeroing.  Additionally removes a stray "bool" in the Kconfig.

Link: http://lkml.kernel.org/r/20180725223832.GA43733@beast
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-22 10:52:44 -07:00
..
kasan
kernel/memremap, kasan: make ZONE_DEVICE with work with KASAN
2018-08-17 16:20:30 -07:00
backing-dev.c
bdi: Fix another oops in wb_workfn()
2018-06-22 12:08:07 -06:00
balloon_compaction.c
virtio_balloon: fix deadlock on OOM
2017-11-14 23:57:38 +02:00
bootmem.c
docs/mm: bootmem: add overview documentation
2018-08-02 12:17:27 -06:00
cleancache.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
cma_debug.c
mm/cma: remove unsupported gfp_mask parameter from cma_alloc()
2018-08-17 16:20:32 -07:00
cma.c
mm/cma: remove unsupported gfp_mask parameter from cma_alloc()
2018-08-17 16:20:32 -07:00
cma.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compaction.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
debug_page_ref.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
debug.c
mm: teach dump_page() to correctly output poisoned struct pages
2018-07-03 17:32:19 -07:00
dmapool.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
early_ioremap.c
mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep
2017-12-11 14:54:44 +01:00
fadvise.c
mm/fadvise.c: fix signed overflow UBSAN complaint
2018-08-17 16:20:30 -07:00
failslab.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
filemap.c
mm: use new return type vm_fault_t
2018-06-07 17:34:36 -07:00
frame_vector.c
mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'
2017-12-14 16:00:48 -08:00
frontswap.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
gup_benchmark.c
treewide: kvzalloc() -> kvcalloc()
2018-06-12 16:19:22 -07:00
gup.c
mm: do not bug_on on incorrect length in __mm_populate()
2018-07-14 11:11:10 -07:00
highmem.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hmm.c
mm, oom: distinguish blockable mode for mmu notifiers
2018-08-22 10:52:44 -07:00
huge_memory.c
mm, huge page: copy target sub-page last when copy huge page
2018-08-17 16:20:29 -07:00
hugetlb_cgroup.c
mm: rename page_counter's count/limit into usage/max
2018-06-07 17:34:35 -07:00
hugetlb.c
mm/hugetlb.c: don't zero 1GiB bootmem pages
2018-08-17 16:20:32 -07:00
hwpoison-inject.c
mm/memory_failure: Remove unused trapno from memory_failure
2018-01-23 12:17:42 -06:00
init-mm.c
mm: Allocate the mm_cpumask (mm->cpu_bitmap[]) dynamically based on nr_cpu_ids
2018-07-17 09:35:30 +02:00
internal.h
Changes for 4.18:
2018-06-05 13:24:20 -07:00
interval_tree.c
mm/interval_tree.c: use vma_pages() helper
2018-01-31 17:18:37 -08:00
Kconfig
mm, swap: make CONFIG_THP_SWAP depend on CONFIG_SWAP
2018-08-17 16:20:32 -07:00
Kconfig.debug
mm: clarify CONFIG_PAGE_POISONING and usage
2018-08-22 10:52:44 -07:00
khugepaged.c
mm: thp: pass correct vm_flags to hugepage_vma_check()
2018-08-17 16:20:30 -07:00
kmemleak-test.c
…
kmemleak.c
mm: kernel-doc: add missing parameter descriptions
2018-04-05 21:36:27 -07:00
ksm.c
mm: convert return type of handle_mm_fault() caller to vm_fault_t
2018-08-17 16:20:28 -07:00
list_lru.c
mm/list_lru: introduce list_lru_shrink_walk_irq()
2018-08-17 16:20:32 -07:00
maccess.c
mm: docs: fix parameter names mismatch
2018-02-06 18:32:48 -08:00
madvise.c
mm/memory_failure: Remove unused trapno from memory_failure
2018-01-23 12:17:42 -06:00
Makefile
mm: restructure memfd code
2018-06-07 17:34:35 -07:00
memblock.c
mm/memblock.c: replace u64 with phys_addr_t where appropriate
2018-08-17 16:20:30 -07:00
memcontrol.c
mm/vmscan.c: clear shrinker bit if there are no objects related to memcg
2018-08-17 16:20:31 -07:00
memfd.c
alloc_file(): switch to passing O_... flags instead of FMODE_... mode
2018-07-12 10:02:57 -04:00
memory_hotplug.c
mm/memory_hotplug.c: make register_mem_sect_under_node() a callback of walk_memory_range()
2018-08-17 16:20:29 -07:00
memory-failure.c
mm, migrate: remove reason argument from new_page_t
2018-04-11 10:28:32 -07:00
memory.c
Revert "mm: always flush VMA ranges affected by zap_page_range"
2018-08-17 16:20:31 -07:00
mempolicy.c
mm: zero out the vma in vma_init()
2018-08-22 10:52:44 -07:00
mempool.c
mm/mempool.c: add missing parameter description
2018-08-22 10:52:44 -07:00
memtest.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
migrate.c
dax: remove VM_MIXEDMAP for fsdax and device dax
2018-08-17 16:20:27 -07:00
mincore.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mlock.c
dax: remove VM_MIXEDMAP for fsdax and device dax
2018-08-17 16:20:27 -07:00
mm_init.c
…
mmap.c
mm, oom: remove oom_lock from oom_reaper
2018-08-22 10:52:44 -07:00
mmu_context.c
sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>
2017-03-02 08:42:38 +01:00
mmu_notifier.c
mm, oom: distinguish blockable mode for mmu notifiers
2018-08-22 10:52:44 -07:00
mmzone.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mprotect.c
x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings
2018-06-20 19:10:01 +02:00
mremap.c
mremap: remove LATENCY_LIMIT from mremap to reduce the number of TLB shootdowns
2018-06-15 07:55:24 +09:00
msync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nobootmem.c
mm/memblock: add a name for memblock flags enumeration
2018-08-02 12:17:27 -06:00
nommu.c
mm: provide a fallback for PAGE_KERNEL_EXEC for architectures
2018-08-17 16:20:29 -07:00
oom_kill.c
mm/oom_kill.c: clean up oom_reap_task_mm()
2018-08-22 10:52:44 -07:00
page_alloc.c
mm, page_alloc: double zone's batchsize
2018-08-17 16:20:32 -07:00
page_counter.c
memcg: introduce memory.min
2018-06-07 17:34:36 -07:00
page_ext.c
mm/page_ext.c: constify lookup_page_ext() argument
2018-08-17 16:20:28 -07:00
page_idle.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
page_io.c
swap,blkcg: issue swap io with the appropriate context
2018-07-09 09:07:54 -06:00
page_isolation.c
mm, migrate: remove reason argument from new_page_t
2018-04-11 10:28:32 -07:00
page_owner.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
page_poison.c
mm/page_poison.c: make early_page_poison_param() __init
2018-04-05 21:36:26 -07:00
page_vma_mapped.c
mm, page_vma_mapped: Introduce pfn_in_hpage()
2018-01-22 12:15:57 -08:00
page-writeback.c
mm/page-writeback.c: update stale account_page_redirty() comment
2018-08-17 16:20:30 -07:00
pagewalk.c
mm: kernel-doc: add missing parameter descriptions
2018-04-05 21:36:27 -07:00
percpu-internal.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
percpu-km.c
percpu: allow select gfp to be passed to underlying allocators
2018-02-18 05:33:01 -08:00
percpu-stats.c
treewide: Use array_size() in vmalloc()
2018-06-12 16:19:22 -07:00
percpu-vm.c
percpu: allow select gfp to be passed to underlying allocators
2018-02-18 05:33:01 -08:00
percpu.c
arch: remove obsolete architecture ports
2018-04-02 20:20:12 -07:00
pgtable-generic.c
mm: do not lose dirty and accessed bits in pmdp_invalidate()
2018-01-31 17:18:38 -08:00
process_vm_access.c
mm: docs: add blank lines to silence sphinx "Unexpected indentation" errors
2018-02-06 18:32:48 -08:00
quicklist.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
readahead.c
readahead: stricter check for bdi io_pages
2018-07-27 09:09:53 -06:00
rmap.c
mm: do not drop unused pages when userfaultd is running
2018-07-14 11:11:09 -07:00
rodata_test.c
mm: fix RODATA_TEST failure "rodata_test: test data was not read only"
2017-10-03 17:54:24 -07:00
shmem.c
mm: zero out the vma in vma_init()
2018-08-22 10:52:44 -07:00
slab_common.c
mm: introduce CONFIG_MEMCG_KMEM as combination of CONFIG_MEMCG && !CONFIG_SLOB
2018-08-17 16:20:30 -07:00
slab.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
slab.h
mm: introduce CONFIG_MEMCG_KMEM as combination of CONFIG_MEMCG && !CONFIG_SLOB
2018-08-17 16:20:30 -07:00
slob.c
slab: __GFP_ZERO is incompatible with a constructor
2018-06-07 17:34:34 -07:00
slub.c
mm, slub: restore the original intention of prefetch_freepointer()
2018-08-17 16:20:28 -07:00
sparse-vmemmap.c
mm/sparse: delete old sparse_init and enable new one
2018-08-17 16:20:32 -07:00
sparse.c
mm/sparse: delete old sparse_init and enable new one
2018-08-17 16:20:32 -07:00
swap_cgroup.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swap_slots.c
mm, swap, get_swap_pages: use entry_size instead of cluster in parameter
2018-08-22 10:52:44 -07:00
swap_state.c
treewide: kvzalloc() -> kvcalloc()
2018-06-12 16:19:22 -07:00
swap.c
mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS
2018-05-22 06:59:39 -07:00
swapfile.c
mm/swapfile.c: put_swap_page: share more between huge/normal code path
2018-08-22 10:52:44 -07:00
truncate.c
page cache: use xa_lock
2018-04-11 10:28:39 -07:00
usercopy.c
usercopy: Allow boot cmdline disabling of hardening
2018-07-04 08:04:52 -07:00
userfaultfd.c
userfaultfd: prevent non-cooperative events vs mcopy_atomic races
2018-06-07 17:34:38 -07:00
util.c
mm: kvmalloc does not fallback to vmalloc for incompatible gfp flags
2018-06-07 17:34:38 -07:00
vmacache.c
mm, vmacache: hash addresses based on pmd
2018-08-17 16:20:32 -07:00
vmalloc.c
mm: provide a fallback for PAGE_KERNEL_EXEC for architectures
2018-08-17 16:20:29 -07:00
vmpressure.c
mm/vmpressure.c: convert to use match_string() helper
2018-06-07 17:34:36 -07:00
vmscan.c
mm: check shrinker is memcg-aware in register_shrinker_prepared()
2018-08-22 10:52:43 -07:00
vmstat.c
Revert mm/vmstat.c: fix vmstat_update() preemption BUG
2018-06-28 11:16:44 -07:00
workingset.c
mm/list_lru: introduce list_lru_shrink_walk_irq()
2018-08-17 16:20:32 -07:00
z3fold.c
z3fold: fix reclaim lock-ups
2018-05-11 17:28:45 -07:00
zbud.c
mm: docs: fix parameter names mismatch
2018-02-06 18:32:48 -08:00
zpool.c
mm/zpool.c: zpool_evictable: fix mismatch in parameter name and kernel-doc
2018-02-21 15:35:43 -08:00
zsmalloc.c
mm/zsmalloc.c: make several functions and a struct static
2018-08-17 16:20:30 -07:00
zswap.c
zswap: re-check zswap_is_full() after do zswap_shrink()
2018-07-26 19:38:03 -07:00