Johannes Weiner 6d75f366b9 lib: radix-tree: check accounting of existing slot replacement users ... The bug in khugepaged fixed earlier in this series shows that radix tree slot replacement is fragile; and it will become more so when not only NULL<->!NULL transitions need to be caught but transitions from and to exceptional entries as well. We need checks. Re-implement radix_tree_replace_slot() on top of the sanity-checked __radix_tree_replace(). This requires existing callers to also pass the radix tree root, but it'll warn us when somebody replaces slots with contents that need proper accounting (transitions between NULL entries, real entries, exceptional entries) and where a replacement through the slot pointer would corrupt the radix tree node counts. Link: http://lkml.kernel.org/r/20161117193021.GB23430@cmpxchg.org Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Suggested-by: Jan Kara <jack@suse.cz> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Matthew Wilcox <mawilcox@linuxonhyperv.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2016-12-12 18:55:08 -08:00
..
kasan	kasan: support use-after-scope detection	2016-11-30 16:32:52 -08:00
backing-dev.c	block: fix bdi vs gendisk lifetime mismatch	2016-08-04 14:19:16 -06:00
balloon_compaction.c	mm: balloon: use general non-lru movable page feature	2016-07-26 16:19:19 -07:00
bootmem.c	mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping	2016-10-11 15:06:33 -07:00
cleancache.c
cma_debug.c
cma.c	mm/cma.c: check the max limit for cma allocation	2016-11-11 08:12:37 -08:00
cma.h
compaction.c	mm, compaction: fix NR_ISOLATED_* stats for pfn based migration	2016-12-12 18:55:07 -08:00
debug_page_ref.c
debug.c	mm: clarify why we avoid page_mapcount() for slab pages in dump_page()	2016-10-07 18:46:29 -07:00
dmapool.c
early_ioremap.c
fadvise.c	mm/fadvise.c: do not discard partial pages with POSIX_FADV_DONTNEED	2016-06-09 14:23:11 -07:00
failslab.c
filemap.c	lib: radix-tree: check accounting of existing slot replacement users	2016-12-12 18:55:08 -08:00
frame_vector.c	mm: replace get_vaddr_frames() write/force parameters with gup_flags	2016-10-19 08:11:24 -07:00
frontswap.c	mm, frontswap: convert frontswap_enabled to static key	2016-07-26 16:19:19 -07:00
gup.c	mm: fix up get_user_pages* comments	2016-12-12 18:55:07 -08:00
highmem.c	mm/highmem: make nr_free_highpages() handles all highmem zones by itself	2016-05-19 19:12:14 -07:00
huge_memory.c	mm: add tlb_remove_check_page_size_change to track page size change	2016-12-12 18:55:07 -08:00
hugetlb_cgroup.c	mm, hugetlb_cgroup: round limit_in_bytes down to hugepage size	2016-05-20 17:58:30 -07:00
hugetlb.c	mm: add tlb_remove_check_page_size_change to track page size change	2016-12-12 18:55:07 -08:00
hwpoison-inject.c
init-mm.c
internal.h	mm, compaction: make full priority ignore pageblock suitability	2016-10-07 18:46:29 -07:00
interval_tree.c
Kconfig	of/fdt: mark hotpluggable memory	2016-12-12 18:55:07 -08:00
Kconfig.debug	PM / Hibernate: allow hibernation with PAGE_POISONING_ZERO	2016-09-13 02:35:27 +02:00
khugepaged.c	lib: radix-tree: check accounting of existing slot replacement users	2016-12-12 18:55:08 -08:00
kmemcheck.c
kmemleak-test.c
kmemleak.c	kmemleak: fix reference to Documentation	2016-12-12 18:55:07 -08:00
ksm.c	mm,ksm: add __GFP_HIGH to the allocation in alloc_stable_node()	2016-10-07 18:46:29 -07:00
list_lru.c	mm/list_lru.c: avoid error-path NULL pointer deref	2016-10-27 18:43:42 -07:00
maccess.c	x86: remove more uaccess_32.h complexity	2016-05-22 17:21:27 -07:00
madvise.c	mm: add tlb_remove_check_page_size_change to track page size change	2016-12-12 18:55:07 -08:00
Makefile	Disable the __builtin_return_address() warning globally after all	2016-10-12 10:23:41 -07:00
memblock.c	mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping	2016-10-11 15:06:33 -07:00
memcontrol.c	mm: memcontrol: use special workqueue for creating per-memcg caches	2016-12-12 18:55:06 -08:00
memory_hotplug.c	mm: remove x86-only restriction of movable_node	2016-12-12 18:55:07 -08:00
memory-failure.c	mm: hwpoison: fix thp split handling in memory_failure()	2016-11-11 08:12:37 -08:00
memory.c	mm: remove the page size change check in tlb_remove_page	2016-12-12 18:55:07 -08:00
mempolicy.c	mm/mempolicy.c: forbid static or relative flags for local NUMA mode	2016-12-12 18:55:07 -08:00
mempool.c	Revert "mm, mempool: only set __GFP_NOMEMALLOC if there are free elements"	2016-07-28 16:07:41 -07:00
memtest.c
migrate.c	lib: radix-tree: check accounting of existing slot replacement users	2016-12-12 18:55:08 -08:00
mincore.c	mm, swap: use offset of swap entry as key of swap cache	2016-10-07 18:46:28 -07:00
mlock.c	thp: fix corner case of munlock() of PTE-mapped THPs	2016-11-30 16:32:52 -08:00
mm_init.c
mmap.c	mm: vma_merge: correct false positive from __vma_unlink->validate_mm_rb	2016-10-07 18:46:29 -07:00
mmu_context.c	mm/mmu_context, sched/core: Fix mmu_context.h assumption	2016-04-28 11:44:19 +02:00
mmu_notifier.c
mmzone.c	mm, page_alloc: inline the fast path of the zonelist iterator	2016-05-19 19:12:14 -07:00
mprotect.c	mm/pkeys: generate pkey system call code only if ARCH_HAS_PKEYS is selected	2016-12-12 18:55:07 -08:00
mremap.c	mremap: move_ptes: check pte dirty after its removal	2016-11-29 08:20:24 -08:00
msync.c
nobootmem.c	mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping	2016-10-11 15:06:33 -07:00
nommu.c	mm: unexport __get_user_pages()	2016-10-24 19:13:20 -07:00
oom_kill.c	oom: print nodemask in the oom report	2016-10-07 18:46:29 -07:00
page_alloc.c	mm: make unreserve highatomic functions reliable	2016-12-12 18:55:07 -08:00
page_counter.c
page_ext.c	mm/page_ext: support extra space allocation by page_ext user	2016-10-07 18:46:27 -07:00
page_idle.c	mm, vmscan: move lru_lock to the node	2016-07-28 16:07:41 -07:00
page_io.c	mm/page_io.c: replace some BUG_ON()s with VM_BUG_ON_PAGE()	2016-10-07 18:46:29 -07:00
page_isolation.c	mm/page_isolation: fix typo: "paes" -> "pages"	2016-10-07 18:46:29 -07:00
page_owner.c	mm/page_owner: don't define fields on struct page_ext by hard-coding	2016-10-07 18:46:27 -07:00
page_poison.c	mm: check the return value of lookup_page_ext for all call sites	2016-06-03 15:06:22 -07:00
page-writeback.c	mm: don't use radix tree writeback tags for pages in swap cache	2016-10-07 18:46:28 -07:00
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c	mm/percpu.c: fix potential memory leakage for pcpu_embed_first_chunk()	2016-10-05 11:52:55 -04:00
pgtable-generic.c
process_vm_access.c	mm: remove write/force parameters from __get_user_pages_unlocked()	2016-10-18 14:13:37 -07:00
quicklist.c
readahead.c	mm: don't cap request size based on read-ahead setting	2016-12-12 18:55:08 -08:00
rmap.c	rmap: fix compound check logic in page_remove_file_rmap	2016-08-10 16:40:56 -07:00
shmem.c	lib: radix-tree: native accounting of exceptional entries	2016-12-12 18:55:08 -08:00
slab_common.c	mm/slab_common.c: check kmem_create_cache flags are common	2016-12-12 18:55:06 -08:00
slab.c	mm, slab: maintain total slab count instead of active count	2016-12-12 18:55:07 -08:00
slab.h	mm, slab: maintain total slab count instead of active count	2016-12-12 18:55:07 -08:00
slob.c	slub: move synchronize_sched out of slab_mutex on shrink	2016-12-12 18:55:06 -08:00
slub.c	slub: avoid false-postive warning	2016-12-12 18:55:06 -08:00
sparse-vmemmap.c	treewide: replace obsolete _refok by __ref	2016-08-02 17:31:41 -04:00
sparse.c	treewide: replace obsolete _refok by __ref	2016-08-02 17:31:41 -04:00
swap_cgroup.c
swap_state.c	mm, swap: use offset of swap entry as key of swap cache	2016-10-07 18:46:28 -07:00
swap.c	thp: reduce usage of huge zero page's atomic counter	2016-10-07 18:46:28 -07:00
swapfile.c	swapfile: fix memory corruption via malformed swapfile	2016-11-11 08:12:37 -08:00
truncate.c	lib: radix-tree: check accounting of existing slot replacement users	2016-12-12 18:55:08 -08:00
usercopy.c	mm: usercopy: Check for module addresses	2016-09-20 16:07:39 -07:00
userfaultfd.c
util.c	Merge branch 'mm-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-10-22 09:39:10 -07:00
vmacache.c	mm: unrig VMA cache hit ratio	2016-10-07 18:46:27 -07:00
vmalloc.c	mm/vmalloc.c: simplify /proc/vmallocinfo implementation	2016-12-12 18:55:07 -08:00
vmpressure.c
vmscan.c	mm/vmscan.c: set correct defer count for shrinker	2016-12-12 18:55:07 -08:00
vmstat.c	seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char	2016-10-07 18:46:30 -07:00
workingset.c	mm: workingset: turn shadow node shrinker bugs into warnings	2016-12-12 18:55:08 -08:00
z3fold.c	mm/z3fold.c: avoid modifying HEADLESS page and minor cleanup	2016-06-03 16:02:55 -07:00
zbud.c
zpool.c
zsmalloc.c	zsmalloc: Delete an unnecessary check before the function call "iput"	2016-07-28 16:07:41 -07:00
zswap.c	mm/zswap: use workqueue to destroy pool	2016-05-20 17:58:30 -07:00