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Joonsoo Kim edcad25095 Revert "slab: remove BAD_ALIEN_MAGIC" 
This reverts commit a640616822 ("slab: remove BAD_ALIEN_MAGIC").

commit a640616822 ("slab: remove BAD_ALIEN_MAGIC") assumes that the
system with !CONFIG_NUMA has only one memory node.  But, it turns out to
be false by the report from Geert.  His system, m68k, has many memory
nodes and is configured in !CONFIG_NUMA.  So it couldn't boot with above
change.

Here goes his failure report.

  With latest mainline, I'm getting a crash during bootup on m68k/ARAnyM:

  enable_cpucache failed for radix_tree_node, error 12.
  kernel BUG at /scratch/geert/linux/linux-m68k/mm/slab.c:1522!
  *** TRAP #7 ***   FORMAT=0
  Current process id is 0
  BAD KERNEL TRAP: 00000000
  Modules linked in:
  PC: [<0039c92c>] kmem_cache_init_late+0x70/0x8c
  SR: 2200  SP: 00345f90  a2: 0034c2e8
  d0: 0000003d    d1: 00000000    d2: 00000000    d3: 003ac942
  d4: 00000000    d5: 00000000    a0: 0034f686    a1: 0034f682
  Process swapper (pid: 0, task=0034c2e8)
  Frame format=0
  Stack from 00345fc4:
          002f69ef 002ff7e5 000005f2 000360fa 0017d806 003921d4 00000000
          00000000 00000000 00000000 00000000 00000000 003ac942 00000000
          003912d6
  Call Trace: [<000360fa>] parse_args+0x0/0x2ca
   [<0017d806>] strlen+0x0/0x1a
   [<003921d4>] start_kernel+0x23c/0x428
   [<003912d6>] _sinittext+0x2d6/0x95e

  Code: f7e5 4879 002f 69ef 61ff ffca 462a 4e47 <4879> 0035 4b1c 61ff
  fff0 0cc4 7005 23c0 0037 fd20 588f 265f 285f 4e75 48e7 301c
  Disabling lock debugging due to kernel taint
  Kernel panic - not syncing: Attempted to kill the idle task!

Although there is a alternative way to fix this issue such as disabling
use of alien cache on !CONFIG_NUMA, but, reverting issued commit is better
to me in this time.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2014-08-08 15:57:17 -07:00
..
Kconfig mm/zpool: update zswap to use zpool 2014-08-06 18:01:23 -07:00
Kconfig.debug mm: more intensive memory corruption debugging 2012-01-10 16:30:42 -08:00
Makefile mm/zpool: implement common zpool api to zbud/zsmalloc 2014-08-06 18:01:23 -07:00
backing-dev.c arch: Mass conversion of smp_mb__*() 2014-04-18 14:20:48 +02:00
balloon_compaction.c mm: print more details for bad_page() 2014-01-23 16:36:50 -08:00
bootmem.c mm/bootmem.c: remove unused local `map' 2013-11-13 12:09:09 +09:00
cleancache.c mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE 2014-01-23 16:36:50 -08:00
cma.c mm, CMA: clean-up log message 2014-08-06 18:01:16 -07:00
compaction.c mm, compaction: properly signal and act upon lock and need_sched() contention 2014-06-04 16:54:11 -07:00
debug-pagealloc.c mm, x86: Remove debug_pagealloc_enabled 2011-12-06 09:24:07 +01:00
dmapool.c mm/dmapool.c: reuse devres_release() to free resources 2014-06-04 16:54:08 -07:00
early_ioremap.c mm: create generic early_ioremap() support 2014-04-07 16:36:15 -07:00
fadvise.c teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long 2013-03-03 22:46:22 -05:00
failslab.c switch debugfs to umode_t 2012-01-03 22:54:56 -05:00
filemap.c mm: describe mmap_sem rules for __lock_page_or_retry() and callers 2014-08-06 18:01:20 -07:00
filemap_xip.c seqcount: Add lockdep functionality to seqcount/seqlock structures 2013-11-06 12:40:26 +01:00
fremap.c mm: mark remap_file_pages() syscall as deprecated 2014-06-06 16:08:17 -07:00
frontswap.c swap: change swap_list_head to plist, add swap_avail_head 2014-06-04 16:54:07 -07:00
gup.c mm: describe mmap_sem rules for __lock_page_or_retry() and callers 2014-08-06 18:01:20 -07:00
highmem.c mm/highmem: make kmap cache coloring aware 2014-08-06 18:01:22 -07:00
huge_memory.c mm, thp: only collapse hugepages to nodes with affinity for zone_reclaim_mode 2014-08-06 18:01:20 -07:00
hugetlb.c mm: fix potential infinite loop in dissolve_free_huge_pages() 2014-08-06 18:01:21 -07:00
hugetlb_cgroup.c cgroup: replace cgroup_add_cftypes() with cgroup_add_legacy_cftypes() 2014-07-15 11:05:09 -04:00
hwpoison-inject.c mm/hwpoison-inject.c: remove unnecessary null test before debugfs_remove_recursive 2014-08-06 18:01:19 -07:00
init-mm.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
internal.h mm/internal.h: use nth_page 2014-08-06 18:01:16 -07:00
interval_tree.c mm: add CONFIG_DEBUG_VM_RB build option 2012-10-09 16:22:42 +09:00
iov_iter.c bio_vec-backed iov_iter 2014-05-06 17:39:45 -04:00
kmemcheck.c
…
kmemleak-test.c mm/kmemleak-test.c: use pr_fmt for logging 2014-06-06 16:08:18 -07:00
kmemleak.c mm: introduce kmemleak_update_trace() 2014-06-06 16:08:17 -07:00
ksm.c sched: Remove proliferation of wait_on_bit() action functions 2014-07-16 15:10:39 +02:00
list_lru.c mm: keep page cache radix tree nodes in check 2014-04-03 16:21:01 -07:00
maccess.c mm: Map most files to use export.h instead of module.h 2011-10-31 09:20:12 -04:00
madvise.c mm: update the description for madvise_remove 2014-08-06 18:01:18 -07:00
memblock.c mm/memblock.c: call kmemleak directly from memblock_(alloc|free) 2014-06-06 16:08:17 -07:00
memcontrol.c mm: memcontrol: clean up reclaim size variable use in try_charge() 2014-08-06 18:01:22 -07:00
memory-failure.c hwpoison: fix race with changing page during offlining 2014-08-06 18:01:19 -07:00
memory.c mm: change confusing #ifdef use in __access_remote_vm 2014-08-06 18:01:22 -07:00
memory_hotplug.c memory-hotplug: add zone_for_memory() for selecting zone for new memory 2014-08-06 18:01:21 -07:00
mempolicy.c Merge branch 'for-3.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2014-07-10 11:38:23 -07:00
mempool.c mm/mempool.c: update the kmemleak stack trace for mempool allocations 2014-06-06 16:08:17 -07:00
migrate.c mm: fix direct reclaim writeback regression 2014-07-26 14:38:50 -07:00
mincore.c mm + fs: prepare for non-page entries in page cache radix trees 2014-04-03 16:21:00 -07:00
mlock.c mm: describe mmap_sem rules for __lock_page_or_retry() and callers 2014-08-06 18:01:20 -07:00
mm_init.c mm: bring back /sys/kernel/mm 2014-01-27 21:02:39 -08:00
mmap.c mm: catch memory commitment underflow 2014-08-06 18:01:19 -07:00
mmu_context.c sched/mm: call finish_arch_post_lock_switch in idle_task_exit and use_mm 2014-02-21 08:50:17 +01:00
mmu_notifier.c mmu_notifier: add call_srcu and sync function for listener to delay call and sync 2014-08-06 18:01:22 -07:00
mmzone.c mm: numa: Change page last {nid,pid} into {cpu,pid} 2013-10-09 14:47:45 +02:00
mprotect.c mm: move mmu notifier call from change_protection to change_pmd_range 2014-04-07 16:35:50 -07:00
mremap.c mm, thp: close race between mremap() and split_huge_page() 2014-05-11 17:55:48 +09:00
msync.c msync: fix incorrect fstart calculation 2014-07-03 09:21:53 -07:00
nobootmem.c mm/memblock.c: call kmemleak directly from memblock_(alloc|free) 2014-06-06 16:08:17 -07:00
nommu.c mm: nommu: per-thread vma cache fix 2014-06-23 16:47:43 -07:00
oom_kill.c mm, oom: remove unnecessary exit_state check 2014-08-06 18:01:21 -07:00
page-writeback.c mm, writeback: prevent race when calculating dirty limits 2014-08-06 18:01:21 -07:00
page_alloc.c mm, thp: restructure thp avoidance of light synchronous migration 2014-08-06 18:01:21 -07:00
page_cgroup.c mm/page_cgroup.c: mark functions as static 2014-04-03 16:21:02 -07:00
page_io.c fix __swap_writepage() compile failure on old gcc versions 2014-06-14 19:30:48 -05:00
page_isolation.c mm: memory-hotplug: enable memory hotplug to handle hugepage 2013-09-11 15:57:48 -07:00
pagewalk.c mm/pagewalk.c: fix walk_page_range() access of wrong PTEs 2013-10-30 14:27:03 -07:00
percpu-km.c
…
percpu-vm.c mm: fix kernel-doc warnings 2012-06-20 14:39:36 -07:00
percpu.c percpu: Use ALIGN macro instead of hand coding alignment calculation 2014-06-19 11:00:27 -04:00
pgtable-generic.c mm: fix TLB flush race between migration, and change_protection_range 2013-12-18 19:04:51 -08:00
process_vm_access.c start adding the tag to iov_iter 2014-05-06 17:32:49 -04:00
quicklist.c mm: delete various needless include <linux/module.h> 2011-10-31 09:20:11 -04:00
readahead.c mm/readahead.c: remove unused file_ra_state from count_history_pages 2014-08-06 18:01:15 -07:00
rmap.c mm/rmap.c: fix pgoff calculation to handle hugepage correctly 2014-07-23 15:10:54 -07:00
shmem.c mm/shmem.c: remove the unused gfp arg to shmem_add_to_page_cache() 2014-08-06 18:01:20 -07:00
slab.c Revert "slab: remove BAD_ALIEN_MAGIC" 2014-08-08 15:57:17 -07:00
slab.h slab: convert last use of __FUNCTION__ to __func__ 2014-08-06 18:01:15 -07:00
slab_common.c mm: move slab related stuff from util.c to slab_common.c 2014-08-06 18:01:15 -07:00
slob.c slab: get_online_mems for kmem_cache_{create,destroy,shrink} 2014-06-04 16:53:59 -07:00
slub.c slub: remove kmemcg id from create_unique_id 2014-08-06 18:01:21 -07:00
sparse-vmemmap.c mm/sparse: use memblock apis for early memory allocations 2014-01-21 16:19:47 -08:00
sparse.c mm: use macros from compiler.h instead of __attribute__((...)) 2014-04-07 16:35:54 -07:00
swap.c mm: pagemap: avoid unnecessary overhead when tracepoints are deactivated 2014-08-06 18:01:20 -07:00
swap_state.c mm: page_alloc: convert hot/cold parameter and immediate callers to bool 2014-06-04 16:54:09 -07:00
swapfile.c mm/swapfile.c: delete the "last_in_cluster < scan_base" loop in the body of scan_swap_map() 2014-06-04 16:54:12 -07:00
truncate.c mm/fs: fix pessimization in hole-punching pagecache 2014-07-23 15:10:55 -07:00
util.c mm: move slab related stuff from util.c to slab_common.c 2014-08-06 18:01:15 -07:00
vmacache.c mm,vmacache: optimize overflow system-wide flushing 2014-06-04 16:53:57 -07:00
vmalloc.c mm/vmalloc.c: clean up map_vm_area third argument 2014-08-06 18:01:19 -07:00
vmpressure.c arm, pm, vmpressure: add missing slab.h includes 2014-02-03 13:24:01 -05:00
vmscan.c memcg, vmscan: Fix forced scan of anonymous pages 2014-08-06 18:01:22 -07:00
vmstat.c mm: vmscan: only update per-cpu thresholds for online CPU 2014-08-06 18:01:20 -07:00
workingset.c mm: keep page cache radix tree nodes in check 2014-04-03 16:21:01 -07:00
zbud.c mm/zpool: zbud/zsmalloc implement zpool 2014-08-06 18:01:23 -07:00
zpool.c mm/zpool: implement common zpool api to zbud/zsmalloc 2014-08-06 18:01:23 -07:00
zsmalloc.c mm/zpool: zbud/zsmalloc implement zpool 2014-08-06 18:01:23 -07:00
zswap.c mm/zpool: update zswap to use zpool 2014-08-06 18:01:23 -07:00