linux-stable/mm
Sean Rees a810007afe mm/slub.c: fix random_seq offset destruction
Commit 210e7a43fa ("mm: SLUB freelist randomization") broke USB hub
initialisation as described in

  https://bugzilla.kernel.org/show_bug.cgi?id=177551.

Bail out early from init_cache_random_seq if s->random_seq is already
initialised.  This prevents destroying the previously computed
random_seq offsets later in the function.

If the offsets are destroyed, then shuffle_freelist will truncate
page->freelist to just the first object (orphaning the rest).

Fixes: 210e7a43fa ("mm: SLUB freelist randomization")
Link: http://lkml.kernel.org/r/20170207140707.20824-1-sean@erifax.org
Signed-off-by: Sean Rees <sean@erifax.org>
Reported-by: <userwithuid@gmail.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Thomas Garnier <thgarnie@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-08 15:41:43 -08:00
..
kasan kasan: respect /proc/sys/kernel/traceoff_on_warning 2017-02-03 14:13:19 -08:00
backing-dev.c writeback: track if we're sleeping on progress in balance_dirty_pages() 2016-11-08 08:28:55 -07:00
balloon_compaction.c
bootmem.c
cleancache.c
cma.c mm/cma.c: check the max limit for cma allocation 2016-11-11 08:12:37 -08:00
cma.h
cma_debug.c
compaction.c mm, compaction: allow compaction for GFP_NOFS requests 2016-12-14 16:04:07 -08:00
debug.c mm, debug: print raw struct page data in __dump_page() 2016-12-12 18:55:08 -08:00
debug_page_ref.c
dmapool.c
early_ioremap.c
fadvise.c mm: fadvise: avoid expensive remote LRU cache draining after FADV_DONTNEED 2016-12-20 09:48:46 -08:00
failslab.c
filemap.c mm, fs: check for fatal signals in do_generic_file_read() 2017-02-03 14:13:19 -08:00
frame_vector.c
frontswap.c
gup.c mm: unexport __get_user_pages_unlocked() 2016-12-14 16:04:09 -08:00
highmem.c
huge_memory.c mm/huge_memory.c: respect FOLL_FORCE/FOLL_COW for thp 2017-01-24 16:26:14 -08:00
hugetlb.c mm/hugetlb.c: fix reservation race when freeing surplus pages 2017-01-10 18:31:55 -08:00
hugetlb_cgroup.c
hwpoison-inject.c
init-mm.c mm: Add a user_ns owner to mm_struct and fix ptrace permission checks 2016-11-22 11:49:48 -06:00
internal.h mm: add PageWaiters indicating tasks are waiting for a page bit 2016-12-25 11:54:48 -08:00
interval_tree.c
Kconfig mm: THP page cache support for ppc64 2016-12-12 18:55:08 -08:00
Kconfig.debug
khugepaged.c mm: get rid of __GFP_OTHER_NODE 2017-01-10 18:31:55 -08:00
kmemcheck.c
kmemleak-test.c
kmemleak.c kmemleak: fix reference to Documentation 2016-12-12 18:55:07 -08:00
ksm.c
list_lru.c mm/list_lru.c: avoid error-path NULL pointer deref 2016-10-27 18:43:42 -07:00
maccess.c
madvise.c mm: add tlb_remove_check_page_size_change to track page size change 2016-12-12 18:55:07 -08:00
Makefile
memblock.c
memcontrol.c mm, memcg: do not retry precharge charges 2017-01-24 16:26:14 -08:00
memory-failure.c mm: Use owner_priv bit for PageSwapCache, valid when PageSwapBacked 2016-12-25 11:54:48 -08:00
memory.c dax: wrprotect pmd_t in dax_mapping_entry_mkclean 2017-01-10 18:31:54 -08:00
memory_hotplug.c base/memory, hotplug: fix a kernel oops in show_valid_zones() 2017-02-03 14:13:19 -08:00
mempolicy.c mm/mempolicy.c: do not put mempolicy before using its nodemask 2017-01-24 16:26:14 -08:00
mempool.c
memtest.c
migrate.c mm: Use owner_priv bit for PageSwapCache, valid when PageSwapBacked 2016-12-25 11:54:48 -08:00
mincore.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
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 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -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
nommu.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
oom_kill.c
page-writeback.c radix-tree: delete radix_tree_range_tag_if_tagged() 2016-12-14 16:04:10 -08:00
page_alloc.c mm, page_alloc: fix premature OOM when racing with cpuset mems update 2017-01-24 16:26:14 -08:00
page_counter.c
page_ext.c
page_idle.c
page_io.c writeback: add wbc_to_write_flags() 2016-11-02 10:24:03 -06:00
page_isolation.c
page_owner.c
page_poison.c
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c Merge branch 'for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2016-12-13 12:34:47 -08:00
pgtable-generic.c
process_vm_access.c mm: unexport __get_user_pages_unlocked() 2016-12-14 16:04:09 -08:00
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 mm, rmap: handle anon_vma_prepare() common case inline 2016-12-12 18:55:08 -08:00
shmem.c shmem: fix sleeping from atomic context 2017-02-03 14:13:19 -08:00
slab.c mm/slab.c: fix SLAB freelist randomization duplicate entries 2017-01-10 18:31:55 -08:00
slab.h mm, slab: maintain total slab count instead of active count 2016-12-12 18:55:07 -08:00
slab_common.c mm/slab_common.c: check kmem_create_cache flags are common 2016-12-12 18:55:06 -08:00
slob.c slub: move synchronize_sched out of slab_mutex on shrink 2016-12-12 18:55:06 -08:00
slub.c mm/slub.c: fix random_seq offset destruction 2017-02-08 15:41:43 -08:00
sparse-vmemmap.c
sparse.c
swap.c mm: add PageWaiters indicating tasks are waiting for a page bit 2016-12-25 11:54:48 -08:00
swap_cgroup.c
swap_state.c
swapfile.c mm: support anonymous stable page 2017-01-10 18:31:55 -08:00
truncate.c mm: Invalidate DAX radix tree entries only if appropriate 2016-12-26 20:29:24 -08:00
usercopy.c
userfaultfd.c
util.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
vmacache.c
vmalloc.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
vmpressure.c
vmscan.c mm, memcg: fix the active list aging for lowmem requests when memcg is enabled 2017-01-10 18:31:55 -08:00
vmstat.c mm/vmstat: Convert to hotplug state machine 2016-12-02 00:52:35 +01:00
workingset.c mm: workingset: fix use-after-free in shadow node shrinker 2017-01-07 18:22:40 -08:00
z3fold.c
zbud.c
zpool.c
zsmalloc.c mm/zsmalloc: Convert to hotplug state machine 2016-12-02 00:52:36 +01:00
zswap.c zswap: disable changing params if init fails 2017-02-03 14:13:19 -08:00