Alan Cox 731572d39f nfsd: fix vm overcommit crash ... Junjiro R. Okajima reported a problem where knfsd crashes if you are using it to export shmemfs objects and run strict overcommit. In this situation the current->mm based modifier to the overcommit goes through a NULL pointer. We could simply check for NULL and skip the modifier but we've caught other real bugs in the past from mm being NULL here - cases where we did need a valid mm set up (eg the exec bug about a year ago). To preserve the checks and get the logic we want shuffle the checking around and add a new helper to the vm_ security wrappers Also fix a current->mm reference in nommu that should use the passed mm [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: fix build] Reported-by: Junjiro R. Okajima <hooanon05@yahoo.co.jp> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-10-30 11:38:47 -07:00
..
Kconfig	Unevictable LRU Infrastructure	2008-10-20 08:50:26 -07:00
Makefile	memcg: allocate all page_cgroup at boot	2008-10-20 08:52:39 -07:00
allocpercpu.c	mm/allocpercpu.c: make 4 functions static	2008-07-26 12:00:12 -07:00
backing-dev.c	mm: bdi: fix race in bdi_class device creation	2008-05-20 13:31:53 -07:00
bootmem.c	misc: replace __FUNCTION__ with __func__	2008-10-16 11:21:30 -07:00
bounce.c	highmem: use bio_has_data() in the bounce path	2008-10-09 08:56:01 +02:00
dmapool.c	dmapool: enable debugging for CONFIG_SLUB_DEBUG_ON too	2008-04-28 08:58:20 -07:00
fadvise.c	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
filemap.c	fs: remove prepare_write/commit_write	2008-10-30 11:38:45 -07:00
filemap_xip.c	mm: xip/ext2 fix block allocation race	2008-08-20 15:40:32 -07:00
fremap.c	mmap: handle mlocked pages during map, remap, unmap	2008-10-20 08:52:31 -07:00
highmem.c	x86, pat: avoid highmem cache attribute aliasing	2008-08-15 17:22:57 +02:00
hugetlb.c	proc: switch /proc/meminfo to seq_file	2008-10-23 13:52:40 +04:00
internal.h	mlock: count attempts to free mlocked page	2008-10-20 08:52:31 -07:00
maccess.c	kgdb: fix optional arch functions and probe_kernel_*	2008-04-17 20:05:39 +02:00
madvise.c	madvise: update function comment of madvise_dontneed	2008-07-30 09:41:45 -07:00
memcontrol.c	memcg: fix page_cgroup allocation	2008-10-23 08:55:02 -07:00
memory.c	mm: remove duplicated #include's	2008-10-20 16:17:42 -07:00
memory_hotplug.c	memory hotplug: release memory regions in PAGES_PER_SECTION chunks	2008-10-20 08:52:32 -07:00
mempolicy.c	Unevictable LRU Infrastructure	2008-10-20 08:50:26 -07:00
mempool.c	spelling fixes: mm/	2007-10-20 01:27:18 +02:00
migrate.c	memcg: make page->mapping NULL before uncharge	2008-10-20 08:52:38 -07:00
mincore.c	mm: remove nopage	2008-04-28 08:58:18 -07:00
mlock.c	mlock: make mlock error return Posixly Correct	2008-10-20 08:52:31 -07:00
mm_init.c	mm: mminit_loglevel cannot be __meminitdata anymore	2008-08-20 15:40:30 -07:00
mmap.c	nfsd: fix vm overcommit crash	2008-10-30 11:38:47 -07:00
mmu_notifier.c	mmu-notifiers: core	2008-07-28 16:30:21 -07:00
mmzone.c	mm: mark the correct zone as full when scanning zonelists	2008-09-13 14:41:52 -07:00
mprotect.c	mmu-notifiers: core	2008-07-28 16:30:21 -07:00
mremap.c	mmap: handle mlocked pages during map, remap, unmap	2008-10-20 08:52:31 -07:00
msync.c	Detach sched.h from mm.h	2007-05-21 09:18:19 -07:00
nommu.c	nfsd: fix vm overcommit crash	2008-10-30 11:38:47 -07:00
oom_kill.c	security: Fix setting of PF_SUPERPRIV by __capable()	2008-08-14 22:59:43 +10:00
page-writeback.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
page_alloc.c	memcg: allocate all page_cgroup at boot	2008-10-20 08:52:39 -07:00
page_cgroup.c	memcg: fix page_cgroup allocation	2008-10-23 08:55:02 -07:00
page_io.c	mm: fix PageUptodate data race	2008-02-05 09:44:19 -08:00
page_isolation.c	memory hotplug: missing zone->lock in test_pages_isolated()	2008-10-02 15:53:13 -07:00
pagewalk.c	pagemap: pass mm into pagewalkers	2008-06-12 18:05:41 -07:00
pdflush.c	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
prio_tree.c	spelling fixes: mm/	2007-10-20 01:27:18 +02:00
quicklist.c	mm: size of quicklists shouldn't be proportional to the number of CPUs	2008-09-02 19:21:38 -07:00
readahead.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
rmap.c	make mm/rmap.c:anon_vma_cachep static	2008-10-20 08:52:40 -07:00
shmem.c	nfsd: fix vm overcommit crash	2008-10-30 11:38:47 -07:00
shmem_acl.c	[PATCH] sanitize ->permission() prototype	2008-07-26 20:53:14 -04:00
slab.c	proc: move /proc/slabinfo boilerplate to mm/slub.c, mm/slab.c	2008-10-23 15:20:06 +04:00
slob.c	SLOB: fix bogus ksize calculation fix	2008-10-09 12:18:27 -07:00
slub.c	proc: move /proc/slabinfo boilerplate to mm/slub.c, mm/slab.c	2008-10-23 15:20:06 +04:00
sparse-vmemmap.c	Christoph has moved	2008-07-04 10:40:04 -07:00
sparse.c	mm/sparse.c: removed duplicated include	2008-08-12 16:07:30 -07:00
swap.c	swap: cull unevictable pages in fault path	2008-10-20 08:52:31 -07:00
swap_state.c	mm: pagecache insertion fewer atomics	2008-10-20 08:52:31 -07:00
swapfile.c	mm: page lock use lock bitops	2008-10-20 08:52:32 -07:00
thrash.c	Bug in mm/thrash.c function grab_swap_token()	2007-05-11 08:29:32 -07:00
tiny-shmem.c	Export tiny shmem_file_setup for DRM-GEM	2008-10-20 16:17:42 -07:00
truncate.c	mmap: handle mlocked pages during map, remap, unmap	2008-10-20 08:52:31 -07:00
util.c	mm: Make generic weak get_user_pages_fast and EXPORT_GPL it	2008-08-12 17:52:53 +10:00
vmalloc.c	mm: fix kernel-doc function notation	2008-10-30 11:38:46 -07:00
vmscan.c	mm: unlockless reclaim	2008-10-20 08:52:32 -07:00
vmstat.c	proc: move /proc/zoneinfo boilerplate to mm/vmstat.c	2008-10-23 17:35:04 +04:00