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linux/mm
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Li Zefan 091d0d55b2 shm: fix null pointer deref when userspace specifies invalid hugepage size 
Dave reported an oops triggered by trinity:

  BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
  IP: newseg+0x10d/0x390
  PGD cf8c1067 PUD cf8c2067 PMD 0
  Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
  CPU: 2 PID: 7636 Comm: trinity-child2 Not tainted 3.9.0+#67
  ...
  Call Trace:
    ipcget+0x182/0x380
    SyS_shmget+0x5a/0x60
    tracesys+0xdd/0xe2

This bug was introduced by commit af73e4d9506d ("hugetlbfs: fix mmap
failure in unaligned size request").

Reported-by: Dave Jones <davej@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Li Zefan <lizfan@huawei.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-09 14:22:47 -07:00
..
backing-dev.c
writeback: expose the bdi_wq workqueue
2013-04-01 19:08:06 -07:00
balloon_compaction.c
mm: introduce a common interface for balloon pages mobility
2012-12-11 17:22:26 -08:00
bootmem.c
mm: Add alloc_bootmem_low_pages_nopanic()
2013-01-29 19:32:59 -08:00
bounce.c
Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block
2013-05-08 10:13:35 -07:00
cleancache.c
mm: cleancache: clean up cleancache_enabled
2013-04-30 17:04:01 -07:00
compaction.c
mm: add & use zone_end_pfn() and zone_spans_pfn()
2013-02-23 17:50:20 -08:00
debug-pagealloc.c
mm, x86: Remove debug_pagealloc_enabled
2011-12-06 09:24:07 +01:00
dmapool.c
dmapool: make DMAPOOL_DEBUG detect corruption of free marker
2012-12-11 17:22:24 -08:00
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_xip.c
lift sb_start_write() out of ->write()
2013-04-09 14:12:56 -04:00
filemap.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2013-05-01 17:51:54 -07:00
fremap.c
Revert "mm: introduce VM_POPULATE flag to better deal with racy userspace programs"
2013-03-28 17:45:51 -07:00
frontswap.c
frontswap: get rid of swap_lock dependency
2013-04-30 17:04:00 -07:00
highmem.c
Some nice cleanups, and even a patch my wife did as a "live" demo for
2012-12-20 08:37:05 -08:00
huge_memory.c
thp: fix huge zero page logic for page with pfn == 0
2013-04-29 15:54:39 -07:00
hugetlb_cgroup.c
mm/hugetlb: create hugetlb cgroup file in hugetlb_init
2012-12-18 15:02:15 -08:00
hugetlb.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2013-04-30 09:36:50 -07:00
hwpoison-inject.c
memcg: rename config variables
2012-07-31 18:42:43 -07:00
init-mm.c
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
internal.h
mm: accelerate munlock() treatment of THP pages
2013-02-27 19:10:09 -08:00
interval_tree.c
mm: add CONFIG_DEBUG_VM_RB build option
2012-10-09 16:22:42 +09:00
Kconfig
mmKconfig: add an option to disable bounce
2013-04-29 15:54:40 -07:00
Kconfig.debug
mm: more intensive memory corruption debugging
2012-01-10 16:30:42 -08:00
kmemcheck.c
kmemcheck: Fix build errors due to missing slab.h
2010-03-30 22:02:32 +09:00
kmemleak-test.c
kmemleak: remove memset by using kzalloc
2011-01-27 18:31:51 +00:00
kmemleak.c
hlist: drop the node parameter from iterators
2013-02-27 19:10:24 -08:00
ksm.c
ksm: fix m68k build: only NUMA needs pfn_to_nid
2013-03-08 15:05:34 -08:00
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: madvise: complete input validation before taking lock
2013-04-29 15:54:37 -07:00
Makefile
memcg: add memory.pressure_level events
2013-04-29 15:54:38 -07:00
memblock.c
memblock: fix missing comment of memblock_insert_region()
2013-04-29 15:54:38 -07:00
memcontrol.c
mm, memcg: add rss_huge stat to memory.stat
2013-05-07 18:38:26 -07:00
memory_hotplug.c
mm: fix memory_hotplug.c printk format warning
2013-04-29 15:54:39 -07:00
memory-failure.c
HWPOISON: check dirty flag to match against clean page
2013-04-29 15:54:28 -07:00
memory.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2013-04-30 09:36:50 -07:00
mempolicy.c
mm/mempolicy.c: fix sp_node_init() argument ordering
2013-03-08 15:05:34 -08:00
mempool.c
mempool: add @gfp_mask to mempool_create_node()
2012-06-25 11:53:47 +02:00
migrate.c
mm: rewrite the comment over migrate_pages() more comprehensibly
2013-04-29 15:54:37 -07:00
mincore.c
swap: make each swap partition have one address_space
2013-02-23 17:50:17 -08:00
mlock.c
Revert "mm: introduce VM_POPULATE flag to better deal with racy userspace programs"
2013-03-28 17:45:51 -07:00
mm_init.c
mm: init: report on last-nid information stored in page->flags
2013-02-23 17:50:18 -08:00
mmap.c
shm: fix null pointer deref when userspace specifies invalid hugepage size
2013-05-09 14:22:47 -07:00
mmu_context.c
mm: remove old aio use_mm() comment
2013-05-07 18:38:27 -07:00
mmu_notifier.c
hlist: drop the node parameter from iterators
2013-02-27 19:10:24 -08:00
mmzone.c
mm: rename page struct field helpers
2013-02-23 17:50:18 -08:00
mprotect.c
mm/mprotect.c: coding-style cleanups
2012-12-18 15:02:15 -08:00
mremap.c
mm/rmap: rename anon_vma_unlock() => anon_vma_unlock_write()
2013-02-23 17:50:17 -08:00
msync.c
sanitize vfs_fsync calling conventions
2010-05-21 18:31:21 -04:00
nobootmem.c
mm, nobootmem: do memset() after memblock_reserve()
2013-04-29 15:54:39 -07:00
nommu.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
2013-05-01 07:21:43 -07:00
oom_kill.c
memcg, oom: provide more precise dump info while memcg oom happening
2013-02-23 17:50:08 -08:00
page_alloc.c
page_alloc: make setup_nr_node_ids() usable for arch init code
2013-04-29 15:54:36 -07:00
page_cgroup.c
memcontrol: use N_MEMORY instead N_HIGH_MEMORY
2012-12-12 17:38:32 -08:00
page_io.c
Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block
2013-05-08 10:13:35 -07:00
page_isolation.c
mm: fix zone_watermark_ok_safe() accounting of isolated pages
2013-01-04 16:11:46 -08:00
page-writeback.c
mm: make snapshotting pages for stable writes a per-bio operation
2013-04-29 15:54:33 -07:00
pagewalk.c
thp: change split_huge_page_pmd() interface
2012-12-12 17:38:31 -08:00
percpu-km.c
percpu: clear memory allocated with the km allocator
2010-10-02 10:28:42 +03:00
percpu-vm.c
mm: fix kernel-doc warnings
2012-06-20 14:39:36 -07:00
percpu.c
mm, percpu: Make sure percpu_alloc early parameter has an argument
2012-12-02 06:23:04 -08:00
pgtable-generic.c
mm: Only flush the TLB when clearing an accessible pte
2012-12-11 14:28:34 +00:00
process_vm_access.c
Fix: compat_rw_copy_check_uvector() misuse in aio, readv, writev, and security keys
2013-03-12 11:05:45 -07:00
quicklist.c
mm: delete various needless include <linux/module.h>
2011-10-31 09:20:11 -04:00
readahead.c
teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long
2013-03-03 22:46:22 -05:00
rmap.c
rmap: recompute pgoff for unmapping huge page
2013-04-29 15:54:28 -07:00
shmem.c
aio: don't include aio.h in sched.h
2013-05-07 20:16:25 -07:00
slab_common.c
mm/slab: Fix crash during slab init
2013-05-08 15:02:33 -07:00
slab.c
Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
2013-05-07 08:42:20 -07:00
slab.h
slab: Common definition for kmem_cache_node
2013-02-01 12:32:09 +02:00
slob.c
mm: rename page struct field helpers
2013-02-23 17:50:18 -08:00
slub.c
Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
2013-05-07 08:42:20 -07:00
sparse-vmemmap.c
sparse-vmemmap: specify vmemmap population range in bytes
2013-04-29 15:54:35 -07:00
sparse.c
mm, hotplug: avoid compiling memory hotremove functions when disabled
2013-04-29 15:54:37 -07:00
swap_state.c
mm: thp: add split tail pages to shrink page list in page reclaim
2013-04-29 15:54:38 -07:00
swap.c
aio: don't include aio.h in sched.h
2013-05-07 20:16:25 -07:00
swapfile.c
frontswap: get rid of swap_lock dependency
2013-04-30 17:04:00 -07:00
truncate.c
mm: drop vmtruncate
2012-12-20 18:46:29 -05:00
util.c
swap: make each swap partition have one address_space
2013-02-23 17:50:17 -08:00
vmalloc.c
mm/vmalloc.c: add vfree comment
2013-05-07 18:38:27 -07:00
vmpressure.c
memcg: add memory.pressure_level events
2013-04-29 15:54:38 -07:00
vmscan.c
mm: thp: add split tail pages to shrink page list in page reclaim
2013-04-29 15:54:38 -07:00
vmstat.c
mm/vmstat: add note on safety of drain_zonestat
2013-04-29 15:54:38 -07:00