linux/mm
David Rientjes 7b8f3b66d9 slub: avoid leaking caches or refcounts on sysfs error
If a slab cache is mergeable and the sysfs alias cannot be added, the
target cache shall have its refcount decremented.  kmem_cache_create()
will return NULL, so if kmem_cache_destroy() is ever called on the target
cache, it will never be freed if the refcount has been leaked.

Likewise, if a slab cache is not mergeable and the sysfs link cannot be
added, the new cache shall be removed from the slab_caches list.
kmem_cache_create() will return NULL, so it will be impossible to call
kmem_cache_destroy() on it.

Both of these operations require slub_lock since refcount of all slab
caches and slab_caches are protected by the lock.

In the mergeable case, it would be better to restore objsize and offset
back to their original values, but this could race with another merge
since slub_lock was dropped.

Cc: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
2008-12-29 11:40:58 +02:00
..
allocpercpu.c mm/allocpercpu.c: make 4 functions static 2008-07-26 12:00:12 -07:00
backing-dev.c mm/backing-dev.c: remove recently-added WARN_ON() 2008-12-10 08:01:52 -08:00
bootmem.c misc: replace __FUNCTION__ with __func__ 2008-10-16 11:21:30 -07:00
bounce.c blktrace: port to tracepoints, update 2008-11-26 13:04:35 +01:00
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_xip.c mm: xip/ext2 fix block allocation race 2008-08-20 15:40:32 -07:00
filemap.c fs: remove prepare_write/commit_write 2008-10-30 11:38:45 -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 hugetlb: make unmap_ref_private multi-size-aware 2008-11-12 17:17:16 -08:00
internal.h hugetlb: pull gigantic page initialisation out of the default path 2008-11-06 15:41:18 -08:00
Kconfig Unevictable LRU Infrastructure 2008-10-20 08:50:26 -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
Makefile memcg: allocate all page_cgroup at boot 2008-10-20 08:52:39 -07:00
memcontrol.c memcg: fix page_cgroup allocation 2008-10-23 08:55:02 -07:00
memory_hotplug.c meminit section warnings 2008-11-30 10:03:35 -08:00
memory.c x86: PAT: move track untrack pfnmap stubs to asm-generic 2008-12-19 15:40:30 -08:00
mempolicy.c Merge branch 'master' into next 2008-11-14 11:29:12 +11:00
mempool.c spelling fixes: mm/ 2007-10-20 01:27:18 +02:00
migrate.c Merge branch 'next' into for-linus 2008-12-25 11:40:09 +11:00
mincore.c mm: remove nopage 2008-04-28 08:58:18 -07:00
mlock.c x86, bts: memory accounting 2008-12-20 09:15:47 +01:00
mm_init.c mm: mminit_loglevel cannot be __meminitdata anymore 2008-08-20 15:40:30 -07:00
mmap.c parisc: fix find_extend_vma() breakage 2008-11-12 10:37:48 -08:00
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 Merge branch 'master' into next 2008-11-14 11:29:12 +11:00
page_alloc.c cpusets: update mems allowed in page allocator 2008-11-12 17:17:16 -08:00
page_cgroup.c page_cgroup should ignore empty nodes 2008-12-10 08:01:53 -08:00
page_io.c mm: fix PageUptodate data race 2008-02-05 09:44:19 -08:00
page_isolation.c memory hotplug: fix page_zone() calculation in test_pages_isolated() 2008-11-06 15:41:19 -08:00
page-writeback.c vmscan: split LRU lists into anon & file sets 2008-10-20 08:50:25 -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_acl.c [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
shmem.c CRED: Wrap task credential accesses in the core kernel 2008-11-14 10:39:12 +11:00
slab.c slab: remove GFP_THISNODE clearing from alloc_slabmgmt() 2008-12-29 11:40:53 +02:00
slob.c slob: do not pass the SLAB flags as GFP in kmem_cache_create() 2008-12-15 16:27:06 -08:00
slub.c slub: avoid leaking caches or refcounts on sysfs error 2008-12-29 11:40:58 +02:00
sparse-vmemmap.c vmemmap: warn about page_structs with remote distance 2008-11-06 15:41:19 -08:00
sparse.c meminit section warnings 2008-11-30 10:03:35 -08:00
swap_state.c mm: pagecache insertion fewer atomics 2008-10-20 08:52:31 -07:00
swap.c mm: remove UP version of lru_add_drain_all() 2008-12-10 08:01:53 -08:00
swapfile.c x86: consolidate __swp_XXX() macros 2008-12-16 18:34:51 +01:00
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 KSYM_SYMBOL_LEN fixes 2008-12-10 08:01:54 -08:00
vmscan.c vmscan: protect zone rotation stats by lru lock 2008-12-01 07:58:06 -08:00
vmstat.c proc: move /proc/zoneinfo boilerplate to mm/vmstat.c 2008-10-23 17:35:04 +04:00