Gavin Shan 6dccdcbe2c mm: bootmem: fix checking the bitmap when finally freeing bootmem ... When bootmem releases an unaligned chunk of memory at the beginning of a node to the page allocator, it iterates from that unaligned PFN but checks an aligned word of the page bitmap. The checked bits do not correspond to the PFNs and, as a result, reserved pages can be freed. Properly shift the bitmap word so that the lowest bit corresponds to the starting PFN before entering the freeing loop. This bug has been around since commit 41546c1741 ("bootmem: clean up free_all_bootmem_core") (2.6.27) without known reports. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-05-29 16:22:21 -07:00
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backing-dev.c
bootmem.c	mm: bootmem: fix checking the bitmap when finally freeing bootmem	2012-05-29 16:22:21 -07:00
bounce.c
cleancache.c
compaction.c	mm: mmzone: MIGRATE_CMA migration type added	2012-05-21 15:09:32 +02:00
debug-pagealloc.c
dmapool.c
fadvise.c
failslab.c
filemap_xip.c
filemap.c	radix-tree: use iterators in find_get_pages* functions	2012-03-28 17:14:37 -07:00
fremap.c
highmem.c
huge_memory.c	mm, thp: drop page_table_lock to uncharge memcg pages	2012-05-29 16:22:20 -07:00
hugetlb.c	mm/hugetlb.c: use long vars instead of int in region_count()	2012-05-29 16:22:18 -07:00
hwpoison-inject.c
init-mm.c
internal.h	mm: rename is_mlocked_vma() to mlocked_vma_newpage()	2012-05-29 16:22:20 -07:00
Kconfig	Cross Memory Attach: make it Kconfigurable	2012-05-29 16:22:20 -07:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c
maccess.c
madvise.c
Makefile	Cross Memory Attach: make it Kconfigurable	2012-05-29 16:22:20 -07:00
memblock.c	memblock: memblock should be able to handle zero length operations	2012-04-20 11:18:46 -07:00
memcontrol.c	mm: memcg: count pte references from every member of the reclaimed hierarchy	2012-05-29 16:22:20 -07:00
memory_hotplug.c	mm: print physical addresses consistently with other parts of kernel	2012-05-29 16:22:21 -07:00
memory-failure.c	mm/memory_failure: let the compiler add the function name	2012-05-29 16:22:18 -07:00
memory.c	thp, memcg: split hugepage for memcg oom on cow	2012-05-29 16:22:19 -07:00
mempolicy.c	mm: do_migrate_pages(): rename arguments	2012-05-29 16:22:20 -07:00
mempool.c
migrate.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2012-05-23 17:42:39 -07:00
mincore.c
mlock.c
mm_init.c
mmap.c	mm/mmap.c: find_vma(): remove unnecessary if(mm) check	2012-05-29 16:22:19 -07:00
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
msync.c
nobootmem.c	mm: nobootmem: fix sign extend problem in __free_pages_memory()	2012-05-10 15:06:44 -07:00
nommu.c	kill mm argument of vm_munmap()	2012-04-21 01:58:20 -04:00
oom_kill.c	userns: Store uid and gid values in struct cred with kuid_t and kgid_t types	2012-05-03 03:28:38 -07:00
page_alloc.c	mm/page_alloc.c: remove pageblock_default_order()	2012-05-29 16:22:21 -07:00
page_cgroup.c
page_io.c
page_isolation.c	mm: page_isolation: MIGRATE_CMA isolation functions added	2012-05-21 15:09:33 +02:00
page-writeback.c	writeback: initialize global_dirty_limit	2012-05-06 13:41:58 +08:00
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c	kmemleak: Fix the kmemleak tracking of the percpu areas with !SMP	2012-05-09 10:13:29 -07:00
pgtable-generic.c	arch/tile: allow building Linux with transparent huge pages enabled	2012-05-25 12:48:21 -04:00
prio_tree.c
process_vm_access.c
quicklist.c
readahead.c
rmap.c	mm: remove swap token code	2012-05-29 16:22:19 -07:00
shmem.c	avoid iput() from flusher thread	2012-05-28 09:54:45 -07:00
slab.c	Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2012-03-28 15:04:26 -07:00
slob.c
slub.c	slub: missing test for partial pages flush work in flush_all()	2012-05-17 18:00:51 -07:00
sparse-vmemmap.c
sparse.c
swap_state.c	mm: fix s390 BUG by __set_page_dirty_no_writeback on swap	2012-04-23 18:19:22 -07:00
swap.c
swapfile.c	swapon: check validity of swap_flags	2012-03-28 17:14:35 -07:00
truncate.c	mm for fs: add truncate_pagecache_range()	2012-03-28 17:14:35 -07:00
util.c
vmalloc.c	mm: use kcalloc() instead of kzalloc() to allocate array	2012-05-29 16:22:19 -07:00
vmscan.c	mm: rename is_mlocked_vma() to mlocked_vma_newpage()	2012-05-29 16:22:20 -07:00
vmstat.c	mm/vmstat.c: remove debug fs entries on failure of file creation and made extfrag_debug_root dentry local	2012-05-29 16:22:19 -07:00