Mel Gorman 1368edf064 mm: vmalloc: check for page allocation failure before vmlist insertion ... Commit f5252e00 ("mm: avoid null pointer access in vm_struct via /proc/vmallocinfo") adds newly allocated vm_structs to the vmlist after it is fully initialised. Unfortunately, it did not check that __vmalloc_area_node() successfully populated the area. In the event of allocation failure, the vmalloc area is freed but the pointer to freed memory is inserted into the vmlist leading to a a crash later in get_vmalloc_info(). This patch adds a check for ____vmalloc_area_node() failure within __vmalloc_node_range. It does not use "goto fail" as in the previous error path as a warning was already displayed by __vmalloc_area_node() before it called vfree in its failure path. Credit goes to Luciano Chavez for doing all the real work of identifying exactly where the problem was. Signed-off-by: Mel Gorman <mgorman@suse.de> Reported-by: Luciano Chavez <lnx1138@linux.vnet.ibm.com> Tested-by: Luciano Chavez <lnx1138@linux.vnet.ibm.com> Reviewed-by: Rik van Riel <riel@redhat.com> Acked-by: David Rientjes <rientjes@google.com> Cc: <stable@vger.kernel.org> [3.1.x+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2011-12-09 07:50:29 -08:00
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backing-dev.c	backing-dev: ensure wakeup_timer is deleted	2011-11-11 13:29:04 +01:00
bootmem.c
bounce.c
cleancache.c
compaction.c
debug-pagealloc.c
dmapool.c
fadvise.c
failslab.c
filemap_xip.c
filemap.c
fremap.c
highmem.c
huge_memory.c	thp: reduce khugepaged freezing latency	2011-12-09 07:50:28 -08:00
hugetlb.c	thp: set compound tail page _count to zero	2011-12-09 07:50:28 -08:00
hwpoison-inject.c
init-mm.c
internal.h
Kconfig
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c
maccess.c
madvise.c
Makefile
memblock.c
memcontrol.c
memory_hotplug.c
memory-failure.c
memory.c
mempolicy.c
mempool.c
migrate.c	mm/migrate.c: pair unlock_page() and lock_page() when migrating huge pages	2011-12-09 07:50:28 -08:00
mincore.c
mlock.c
mm_init.c
mmap.c
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
msync.c
nobootmem.c
nommu.c	xen: map foreign pages for shared rings by updating the PTEs directly	2011-11-16 12:13:08 -05:00
oom_kill.c	oom: do not kill tasks with oom_score_adj OOM_SCORE_ADJ_MIN	2011-11-15 22:41:51 -02:00
page_alloc.c	mm: Ensure that pfn_valid() is called once per pageblock when reserving pageblocks	2011-12-09 07:50:28 -08:00
page_cgroup.c
page_io.c
page_isolation.c
page-writeback.c	writeback: remove vm_dirties and task->dirties	2011-11-17 20:49:06 +08:00
pagewalk.c
percpu-km.c
percpu-vm.c	percpu: fix chunk range calculation	2011-11-22 08:09:46 -08:00
percpu.c	percpu: explain why per_cpu_ptr_to_phys() is more complicated than necessary	2011-11-23 08:20:53 -08:00
pgtable-generic.c
prio_tree.c
process_vm_access.c
quicklist.c
readahead.c
rmap.c
shmem.c
slab.c	slab, lockdep: Fix silly bug	2011-12-05 09:44:00 +01:00
slob.c
slub.c	slub: avoid potential NULL dereference or corruption	2011-11-24 08:44:19 +02:00
sparse-vmemmap.c
sparse.c
swap_state.c
swap.c
swapfile.c
thrash.c
truncate.c
util.c
vmalloc.c	mm: vmalloc: check for page allocation failure before vmlist insertion	2011-12-09 07:50:29 -08:00
vmscan.c	vmscan: use atomic-long for shrinker batching	2011-12-09 07:50:27 -08:00
vmstat.c