Christoph Lameter 271137c038 slab: alien caches must not be initialized if the allocation of the alien cache failed ...

commit 09c2e76ed7 upstream.

Callers of __alloc_alien() check for NULL.  We must do the same check in
__alloc_alien_cache to avoid NULL pointer dereferences on allocation
failures.

Link: http://lkml.kernel.org/r/010001680f42f192-82b4e12e-1565-4ee0-ae1f-1e98974906aa-000000@email.amazonses.com
Fixes: 49dfc304ba ("slab: use the lock on alien_cache, instead of the lock on array_cache")
Fixes: c8522a3a58 ("Slab: introduce alloc_alien")
Signed-off-by: Christoph Lameter <cl@linux.com>
Reported-by: syzbot+d6ed4ec679652b4fd4e4@syzkaller.appspotmail.com
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-01-16 22:16:11 +01:00

..

kasan

kasan: fix shadow_size calculation error in kasan_module_alloc

2018-08-24 13:26:58 +02:00

backing-dev.c

writeback: fix the wrong congested state variable definition

2018-04-08 11:51:56 +02:00

balloon_compaction.c

virtio_balloon: fix race between migration and ballooning

2016-03-03 15:07:18 -08:00

bootmem.c

bootmem: avoid freeing to bootmem after bootmem is done

2015-09-08 15:35:28 -07:00

cleancache.c

…

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 12:06:09 +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: pass only pageblock aligned range to pageblock_pfn_to_page

2018-01-17 09:35:26 +01:00

debug-pagealloc.c

mm, hwpoison: fixup "mm: check the return value of lookup_page_ext for all call sites"

2017-11-24 11:26:29 +01:00

debug.c

mm: get rid of vmacache_flush_all() entirely

2018-09-19 22:49:00 +02:00

dmapool.c

mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd

2015-11-06 17:50:42 -08:00

early_ioremap.c

mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep

2018-02-25 11:03:41 +01:00

fadvise.c

mm/fadvise.c: fix signed overflow UBSAN complaint

2018-09-15 09:40:38 +02:00

failslab.c

mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM

2015-11-06 17:50:42 -08:00

filemap.c

mm: filemap: avoid unnecessary calls to lock_page when waiting for IO to complete during a read

2018-05-26 08:48:54 +02:00

frame_vector.c

mm: replace get_vaddr_frames() write/force parameters with gup_flags

2018-12-17 21:55:16 +01:00

frontswap.c

…

gup.c

proc: do not access cmdline nor environ from file-backed areas

2018-12-17 21:55:17 +01:00

highmem.c

…

huge_memory.c

mremap: properly flush TLB before releasing the page

2018-11-10 07:41:42 -08:00

hugetlb_cgroup.c

mm: make compound_head() robust

2015-11-06 17:50:42 -08:00

hugetlb.c

hugetlbfs: check for pgoff value overflow

2018-12-17 21:55:15 +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 11:16:11 +01:00

internal.h

mm, mprotect: flush TLB if potentially racing with a parallel reclaim leaving stale TLB entries

2017-08-11 09:08:50 -07:00

interval_tree.c

…

Kconfig

mm: don't allow deferred pages with NEED_PER_CPU_KM

2018-05-26 08:48:55 +02:00

Kconfig.debug

…

kmemcheck.c

…

kmemleak-test.c

…

kmemleak.c

mm/kmemleak.c: wait for scan completion before disabling free

2018-05-30 07:49:06 +02:00

ksm.c

mm/ksm: fix interaction with THP

2018-05-30 07:49:08 +02:00

list_lru.c

mm/list_lru.c: fix list_lru_count_node() to be race free

2017-07-21 07:44:56 +02:00

maccess.c

mm/maccess.c: actually return -EFAULT from strncpy_from_unsafe

2015-11-05 19:34:48 -08:00

madvise.c

mm: madvise(MADV_DODUMP): allow hugetlbfs pages

2018-10-10 08:52:11 +02:00

Makefile

Merge tag 'media/v4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

2015-09-11 16:42:39 -07:00

memblock.c

mm: consider memblock reservations for deferred memory initialization sizing

2017-06-14 13:16:26 +02:00

memcontrol.c

mm: memcg: fix use after free in mem_cgroup_iter()

2018-07-25 10:18:16 +02:00

memory_hotplug.c

hwpoison, memory_hotplug: allow hwpoisoned pages to be offlined

2019-01-13 10:05:32 +01:00

memory-failure.c

hwpoison, memcg: forcibly uncharge LRU pages

2018-01-31 12:06:09 +01:00

memory.c

mm: replace access_remote_vm() write parameter with gup_flags

2018-12-17 21:55:17 +01:00

mempolicy.c

mm: replace get_user_pages() write/force parameters with gup_flags

2018-12-17 21:55:16 +01:00

mempool.c

mm/mempool: avoid KASAN marking mempool poison checks as use-after-free

2017-08-12 19:29:09 -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 17:02:36 -07:00

mincore.c

mm/mincore: use offset_in_page macro

2015-11-05 19:34:48 -08:00

mlock.c

mm: mlock: avoid increase mm->locked_vm on mlock() when already mlock2(,MLOCK_ONFAULT)

2018-12-13 09:21:33 +01:00

mm_init.c

…

mmap.c

mm: do not bug_on on incorrect length in __mm_populate()

2018-11-21 09:27:41 +01:00

mmu_context.c

mm/mmu_context, sched/core: Fix mmu_context.h assumption

2017-12-25 14:22:09 +01:00

mmu_notifier.c

mmu-notifier: add clear_young callback

2015-09-10 13:29:01 -07:00

mmzone.c

…

mprotect.c

x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings

2018-08-15 17:42:10 +02:00

mremap.c

mremap: properly flush TLB before releasing the page

2018-11-10 07:41:42 -08:00

msync.c

mm/msync: use offset_in_page macro

2015-11-05 19:34:48 -08:00

nobootmem.c

…

nommu.c

mm: replace access_remote_vm() write parameter with gup_flags

2018-12-17 21:55:17 +01:00

oom_kill.c

mm/oom_kill.c: avoid attempting to kill init sharing same memory

2015-12-12 10:15:34 -08:00

page_alloc.c

mm, page_alloc: do not break __GFP_THISNODE by zonelist reset

2018-07-11 16:03:51 +02:00

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.c: check if page_ext is not prepared

2017-11-24 08:32:25 +01:00

page_idle.c

mm: introduce idle page tracking

2015-09-10 13:29:01 -07:00

page_io.c

fs: use helper bio_add_page() instead of open coding on bi_io_vec

2015-08-13 12:32:00 -06:00

page_isolation.c

mm: fix invalid node in alloc_migrate_target()

2016-04-20 15:41:53 +09:00

page_owner.c

mm: check the return value of lookup_page_ext for all call sites

2017-11-24 08:32:25 +01:00

page-writeback.c

writeback: safer lock nesting

2018-04-24 09:32:12 +02:00

pagewalk.c

mm/pagewalk.c: report holes in hugetlb ranges

2017-11-24 08:32:25 +01:00

percpu-km.c

…

percpu-vm.c

…

percpu.c

percpu: include linux/sched.h for cond_resched()

2018-05-16 10:06:46 +02:00

pgtable-generic.c

mm,thp: khugepaged: call pte flush at the time of collapse

2016-02-25 12:01:23 -08:00

process_vm_access.c

mm: replace get_user_pages_unlocked() write/force parameters with gup_flags

2018-12-17 21:55:16 +01:00

quicklist.c

…

readahead.c

mm, fs: introduce mapping_gfp_constraint()

2015-11-06 17:50:42 -08:00

rmap.c

mm: migration: fix migration of huge PMD shared pages

2018-11-21 09:27:44 +01:00

shmem.c

tmpfs: make lseek(SEEK_DATA/SEK_HOLE) return ENXIO with a negative offset

2018-12-01 09:46:35 +01:00

slab_common.c

slub: do not merge cache if slub_debug contains a never-merge flag

2017-10-21 17:09:05 +02:00

slab.c

slab: alien caches must not be initialized if the allocation of the alien cache failed

2019-01-16 22:16:11 +01:00

slab.h

slab/slub: adjust kmem_cache_alloc_bulk API

2015-11-22 11:58:44 -08:00

slob.c

slab/slub: adjust kmem_cache_alloc_bulk API

2015-11-22 11:58:44 -08:00

slub.c

slub: make ->cpu_partial unsigned int

2018-10-10 08:52:08 +02:00

sparse-vmemmap.c

…

sparse.c

…

swap_cgroup.c

mm, swap_cgroup: reschedule when neeed in swap_cgroup_swapoff()

2017-07-05 14:37:15 +02:00

swap_state.c

mm: swap: zswap: maybe_preload & refactoring

2015-09-08 15:35:28 -07:00

swap.c

mm: make compound_head() robust

2015-11-06 17:50:42 -08:00

swapfile.c

x86/speculation/l1tf: Limit swap file size to MAX_PA/2

2018-08-15 17:42:10 +02:00

truncate.c

mm: cleancache: fix corruption on missed inode invalidation

2018-12-13 09:21:33 +01:00

userfaultfd.c

userfaultfd: avoid mmap_sem read recursion in mcopy_atomic

2015-09-04 16:54:41 -07:00

util.c

mm: replace get_user_pages_unlocked() write/force parameters with gup_flags

2018-12-17 21:55:16 +01:00

vmacache.c

mm: get rid of vmacache_flush_all() entirely

2018-09-19 22:49:00 +02:00

vmalloc.c

mm: vmalloc: avoid racy handling of debugobjects in vunmap

2018-08-06 16:24:30 +02:00

vmpressure.c

mm: vmpressure: fix sending wrong events on underflow

2017-03-12 06:37:25 +01:00

vmscan.c

mm: fix the NULL mapping case in __isolate_lru_page()

2018-06-06 16:46:23 +02:00

vmstat.c

mm/vmstat.c: fix outdated vmstat_text

2018-10-20 09:52:34 +02:00

workingset.c

mm: workingset: fix crash in shadow node shrinker caused by replace_page_cache_page()

2016-10-28 03:01:34 -04:00

zbud.c

mm: zsmalloc: constify struct zs_pool name

2015-11-06 17:50:42 -08:00

zpool.c

mm: zsmalloc: constify struct zs_pool name

2015-11-06 17:50:42 -08:00

zsmalloc.c

zsmalloc: fix zs_can_compact() integer overflow

2016-05-18 17:06:44 -07:00

zswap.c

zswap: re-check zswap_is_full() after do zswap_shrink()

2018-09-05 09:18:36 +02:00