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bb52bba67e35e1eefaf4b4b898b008fa82df47e1
linux/mm
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Alexander Potapenko d6f2774567 UPSTREAM: kasan: add functions for unpoisoning stack variables 
As a code-size optimization, LLVM builds since r279383 may bulk-manipulate
the shadow region when (un)poisoning large memory blocks.  This requires
new callbacks that simply do an uninstrumented memset().

This fixes linking the Clang-built kernel when using KASAN.

[arnd@arndb.de: add declarations for internal functions]
  Link: http://lkml.kernel.org/r/20180105094112.2690475-1-arnd@arndb.de
[fengguang.wu@intel.com: __asan_set_shadow_00 can be static]
  Link: http://lkml.kernel.org/r/20171223125943.GA74341@lkp-ib03
[ghackmann@google.com: fix memset() parameters, and tweak commit message to describe new callbacks]
Link: http://lkml.kernel.org/r/20171204191735.132544-6-paullawrence@google.com
Signed-off-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Paul Lawrence <paullawrence@google.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

(cherry-picked from d321599cf6)
Change-Id: I3bd77aa0dac7447c3436c8b12e5e84d06f062206
Signed-off-by: Paul Lawrence <paullawrence@google.com>
2018-03-15 08:28:37 -07:00
..
kasan
UPSTREAM: kasan: add functions for unpoisoning stack variables
2018-03-15 08:28:37 -07:00
backing-dev.c
block: fix double-free in the failure path of cgwb_bdi_init()
2017-02-26 11:10:52 +01:00
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
cleancache: constify cleancache_ops structure
2016-01-27 09:09:57 -05:00
cma_debug.c
mm/cma_debug: correct size input to bitmap function
2015-07-17 16:39:54 -07:00
cma.c
cma: fix calculation of aligned offset
2018-01-31 12:55:51 +01:00
cma.h
mm: cma: mark cma_bitmap_maxno() inline in header
2015-08-14 15:56:32 -07:00
compaction.c
mm, compaction: fix NR_ISOLATED_* stats for pfn based migration
2017-01-12 11:39:32 +01:00
debug_page_ref.c
mm/page_ref: add tracepoint to track down page reference manipulation
2016-03-17 15:09:34 -07:00
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
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
early_ioremap.c
mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep
2018-02-25 11:05:49 +01:00
fadvise.c
mm/fadvise.c: do not discard partial pages with POSIX_FADV_DONTNEED
2016-06-09 14:23:11 -07:00
failslab.c
mm: fault-inject take over bootstrap kmem_cache check
2016-03-15 16:55:16 -07:00
filemap.c
mm: fix filler function type mismatch
2018-02-28 15:09:59 -08:00
frame_vector.c
mm: fail get_vaddr_frames() for filesystem-dax mappings
2018-02-28 10:18:34 +01:00
frontswap.c
mm, frontswap: convert frontswap_enabled to static key
2016-07-26 16:19:19 -07:00
gup.c
mm: introduce get_user_pages_longterm
2018-02-28 10:18:33 +01:00
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
thp: fix MADV_DONTNEED vs. numa balancing race
2017-12-14 09:28:16 +01:00
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, hugetlbfs: introduce ->split() to vm_operations_struct
2017-12-05 11:24:32 +01:00
hwpoison-inject.c
hwpoison: use page_cgroup_ino for filtering by memcg
2015-09-10 13:29:01 -07:00
init-mm.c
mm: Add a user_ns owner to mm_struct and fix ptrace permission checks
2017-01-06 10:40:13 +01:00
internal.h
mm: fix 100% CPU kswapd busyloop on unreclaimable nodes
2018-01-31 12:55:53 +01:00
interval_tree.c
mm: replace vma->sharead.linear with vma->shared
2015-02-10 14:30:31 -08:00
Kconfig
Allow KASAN and HOTPLUG_MEMORY to co-exist when doing build testing
2016-10-27 16:23:01 -07:00
Kconfig.debug
PM / Hibernate: allow hibernation with PAGE_POISONING_ZERO
2016-09-13 02:35:27 +02:00
khugepaged.c
mm: khugepaged: fix radix tree node leak in shmem collapse error path
2017-01-12 11:39:32 +01:00
kmemcheck.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
kmemleak-test.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
kmemleak.c
kmemleak: add scheduling point to kmemleak_scan()
2018-02-03 17:05:39 +01:00
ksm.c
ksm: prevent crash after write_protect_page fails
2017-06-07 12:07:49 +02:00
list_lru.c
mm/list_lru.c: fix list_lru_count_node() to be race free
2017-07-21 07:42:21 +02:00
maccess.c
x86: remove more uaccess_32.h complexity
2016-05-22 17:21:27 -07:00
madvise.c
Merge 4.9.67 into android-4.9
2017-12-05 11:34:59 +01:00
Makefile
Disable the __builtin_return_address() warning globally after all
2016-10-12 10:23:41 -07:00
memblock.c
mm/memblock.c: reversed logic in memblock_discard()
2017-08-30 10:21:47 +02:00
memcontrol.c
hwpoison, memcg: forcibly uncharge LRU pages
2018-01-31 12:55:51 +01:00
memory_hotplug.c
mm/memory_hotplug: set magic number to page->freelist instead of page->lru.next
2017-10-21 17:21:36 +02:00
memory-failure.c
hwpoison, memcg: forcibly uncharge LRU pages
2018-01-31 12:55:51 +01:00
memory.c
mm: avoid spurious 'bad pmd' warning messages
2018-02-28 10:18:33 +01:00
mempolicy.c
Merge 4.9.45 into android-4.9
2017-08-29 14:51:49 +02:00
mempool.c
Revert "mm, mempool: only set __GFP_NOMEMALLOC if there are free elements"
2016-07-28 16:07:41 -07:00
memtest.c
memtest: remove unused header files
2015-09-08 15:35:28 -07:00
migrate.c
Sanitize 'move_pages()' permission checks
2017-08-24 17:12:21 -07:00
mincore.c
mm, swap: use offset of swap entry as key of swap cache
2016-10-07 18:46:28 -07:00
mlock.c
Merge 4.9.31 into android-4.9
2017-06-07 12:37:47 +02:00
mm_init.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
mmap.c
Merge 4.9.79 into android-4.9
2018-01-31 14:13:00 +01:00
mmu_context.c
mm/mmu_context, sched/core: Fix mmu_context.h assumption
2016-04-28 11:44:19 +02:00
mmu_notifier.c
fix Christoph's email addresses
2016-03-17 15:09:34 -07:00
mmzone.c
mm, page_alloc: inline the fast path of the zonelist iterator
2016-05-19 19:12:14 -07:00
mprotect.c
Merge 4.9.42 into android-4.9
2017-08-11 13:55:02 -07:00
mremap.c
mm, mprotect: flush TLB if potentially racing with a parallel reclaim leaving stale TLB entries
2017-08-11 08:49:29 -07:00
msync.c
mm/msync: use offset_in_page macro
2015-11-05 19:34:48 -08:00
nobootmem.c
mm: discard memblock data later
2017-08-24 17:12:19 -07:00
nommu.c
ptrace: Don't allow accessing an undumpable mm
2017-01-06 10:40:13 +01:00
oom_kill.c
mm, oom_reaper: gather each vma to prevent leaking TLB entry
2017-12-09 22:01:47 +01:00
page_alloc.c
mm: fix drain_local_pages function type
2018-02-28 15:09:59 -08:00
page_counter.c
mm: page_counter: let page_counter_try_charge() return bool
2015-11-05 19:34:48 -08:00
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
mm/pagewalk.c: report holes in hugetlb ranges
2017-11-24 08:33:42 +01:00
percpu-km.c
mm: percpu: use pr_fmt to prefix output
2016-03-17 15:09:34 -07:00
percpu-vm.c
percpu: move region iterations out of pcpu_[de]populate_chunk()
2014-09-02 14:46:02 -04:00
percpu.c
percpu: acquire pcpu_lock when updating pcpu_nr_empty_pop_pages
2017-03-26 13:05:58 +02:00
pgtable-generic.c
mm/thp/migration: switch from flush_tlb_range to flush_pmd_tlb_range
2016-03-17 15:09:34 -07:00
process_vm_access.c
mm: remove write/force parameters from __get_user_pages_unlocked()
2016-10-18 14:13:37 -07:00
quicklist.c
fix Christoph's email addresses
2016-03-17 15:09:34 -07:00
readahead.c
mm: fix filler function type mismatch
2018-02-28 15:09:59 -08:00
rmap.c
mm, mprotect: flush TLB if potentially racing with a parallel reclaim leaving stale TLB entries
2017-08-11 08:49:29 -07:00
shmem.c
Merge 4.9.84 into android-4.9
2018-02-26 09:18:03 +01:00
slab_common.c
UPSTREAM: kasan: drain quarantine of memcg slab objects
2017-12-18 15:07:19 -08:00
slab.c
slub: move synchronize_sched out of slab_mutex on shrink
2017-03-22 12:43:38 +01:00
slab.h
slub: move synchronize_sched out of slab_mutex on shrink
2017-03-22 12:43:38 +01:00
slob.c
slub: move synchronize_sched out of slab_mutex on shrink
2017-03-22 12:43:38 +01:00
slub.c
mm/slub.c: trace free objects at KERN_INFO
2017-06-07 12:07:49 +02:00
sparse-vmemmap.c
treewide: replace obsolete _refok by __ref
2016-08-02 17:31:41 -04:00
sparse.c
mm/memory_hotplug: set magic number to page->freelist instead of page->lru.next
2017-10-21 17:21:36 +02:00
swap_cgroup.c
mm, swap_cgroup: reschedule when neeed in swap_cgroup_swapoff()
2017-07-05 14:40:17 +02:00
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
mm: support anonymous stable page
2017-01-19 20:17:59 +01:00
truncate.c
fs: add i_blocksize()
2017-06-14 15:06:00 +02:00
usercopy.c
mm: usercopy: Check for module addresses
2016-09-20 16:07:39 -07:00
userfaultfd.c
mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
2016-04-04 10:41:08 -07:00
util.c
Provide a function to create a NUL-terminated string from unterminated data
2018-02-25 11:05:41 +01:00
vmacache.c
mm: unrig VMA cache hit ratio
2016-10-07 18:46:27 -07:00
vmalloc.c
mm/vmalloc.c: huge-vmap: fail gracefully on unexpected huge vmap mappings
2017-07-05 14:40:28 +02:00
vmpressure.c
mm: vmpressure: fix sending wrong events on underflow
2017-03-12 06:41:43 +01:00
vmscan.c
mm,vmscan: Make unregister_shrinker() no-op if register_shrinker() failed.
2018-02-25 11:05:40 +01:00
vmstat.c
mm: fix 100% CPU kswapd busyloop on unreclaimable nodes
2018-01-31 12:55:53 +01:00
workingset.c
mm: workingset: fix premature shadow node shrinking with cgroups
2017-04-08 09:30:36 +02:00
z3fold.c
mm/z3fold.c: avoid modifying HEADLESS page and minor cleanup
2016-06-03 16:02:55 -07:00
zbud.c
mm/zbud.c: use list_last_entry() instead of list_tail_entry()
2016-01-15 11:40:52 -08:00
zpool.c
mm: zsmalloc: constify struct zs_pool name
2015-11-06 17:50:42 -08:00
zsmalloc.c
zsmalloc: calling zs_map_object() from irq is a bug
2017-12-14 09:28:23 +01:00
zswap.c
zswap: don't param_set_charp while holding spinlock
2018-01-17 09:38:52 +01:00