Andrew Morton 5b019e9901 lib/idr.c: use kmem_cache_zalloc() for the idr_layer cache ... David points out that the idr_remove_all() function returns unused slabs to the kmem cache, but needs to zero them first or else they will be uninitialized upon next use. This causes crashes which have been observed in the firewire subsystem. He fixed this by zeroing the object before freeing it in idr_remove_all(). But we agree that simply removing the constructor and zeroing the object at allocation time is simpler than relying upon slab constructor machinery and might even be faster. This problem was introduced by "idr: make idr_remove rcu-safe" (commit cf481c20c4), which was first released in 2.6.27. There are no known codesites which trigger this bug in 2.6.27 or 2.6.28. The post-2.6.28 firewire changes are the only known triggerer. There might of course be not-yet-discovered triggerers in 2.6.27 and 2.6.28, and there might be out-of-tree triggerers which are added to those kernel versions. I'll let the -stable guys decide whether they want to backport this fix. Reported-by: David Moore <dcm@acm.org> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Nadia Derbey <Nadia.Derbey@bull.net> Cc: Paul E. McKenney <paulmck@us.ibm.com> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Kristian Hgsberg <krh@redhat.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-01-15 16:39:40 -08:00
..
lzo	lzo: use get/put_unaligned_* helpers	2008-07-25 10:53:26 -07:00
reed_solomon	lib: Remove unnecessary inclusions of asm/semaphore.h	2008-04-18 22:17:17 -04:00
zlib_deflate	lib/: Spelling fixes	2008-02-03 17:48:52 +02:00
zlib_inflate
.gitignore
argv_split.c	LIB: Replace inappropriate include of <linux/bug.h>	2007-10-20 00:26:10 +02:00
audit.c
bcd.c	rtc: BCD codeshrink	2008-07-24 10:47:33 -07:00
bitmap.c	Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb	2008-10-23 08:20:34 -07:00
bitrev.c	lib: export bitrev16	2008-06-06 11:29:10 -07:00
bug.c	allow bug table entries to use relative pointers (and use it on x86-64)	2008-12-16 18:40:32 +01:00
bust_spinlocks.c	oops handling: ensure that any oops is flushed to the mtdoops console	2009-01-06 15:59:11 -08:00
check_signature.c
cmdline.c	generic, memparse(): constify argument	2008-07-28 15:05:23 +02:00
cpumask.c	cpumask: zero extra bits in alloc_cpumask_var_node	2009-01-01 10:12:30 +10:30
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c	[SCSI] lib: Add support for the T10 (SCSI) Data Integrity Field CRC	2008-07-12 08:22:32 -05:00
crc7.c
crc16.c
crc32.c	lib/: Spelling fixes	2008-02-03 17:48:52 +02:00
crc32defs.h
ctype.c
debug_locks.c	debug_locks: set oops_in_progress if we will log messages.	2008-08-01 10:46:43 +02:00
debugobjects.c	debugobjects: add boot parameter default value	2008-11-26 10:07:06 +01:00
dec_and_lock.c
devres.c	[POWERPC] devres: Add devm_ioremap_prot()	2008-05-05 16:47:14 +10:00
div64.c	add an inlined version of iter_div_u64_rem	2008-06-12 10:47:58 +02:00
dump_stack.c
dynamic_printk.c	dynamic_printk: reduce one level of indentation	2009-01-06 10:44:32 -08:00
extable.c	lib/extable.c: remove an expensive integer divide in search_extable()	2008-02-06 10:41:08 -08:00
fault-inject.c	Remove remaining unwinder code	2009-01-06 15:59:11 -08:00
find_last_bit.c	bitmap: find_last_bit()	2009-01-01 10:12:19 +10:30
find_next_bit.c	bitops: remove "optimizations"	2008-04-29 08:11:16 -07:00
gen_crc32table.c
genalloc.c
halfmd4.c
hexdump.c	lib: create common ascii hex array	2008-05-14 19:11:14 -07:00
hweight.c	remove asm/bitops.h includes	2007-10-19 11:53:41 -07:00
idr.c	lib/idr.c: use kmem_cache_zalloc() for the idr_layer cache	2009-01-15 16:39:40 -08:00
inflate.c	inflate: refactor inflate malloc code	2008-07-25 10:53:28 -07:00
int_sqrt.c
iomap.c	Use WARN() in lib/	2008-07-26 12:00:07 -07:00
iomap_copy.c
iommu-helper.c	introduce generic iommu_num_pages function	2008-10-16 11:21:33 -07:00
ioremap.c	lib/ioremap.c should #include <linux/io.h>	2007-10-17 08:42:50 -07:00
irq_regs.c
is_single_threaded.c	CRED: Rename is_single_threaded() to is_wq_single_threaded()	2008-11-14 10:39:21 +11:00
kasprintf.c
Kconfig	Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-02 11:44:09 -08:00
Kconfig.debug	Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-10 06:13:09 -08:00
Kconfig.kgdb	kgdb: remove the requirement for CONFIG_FRAME_POINTER	2008-08-01 08:39:34 -05:00
kernel_lock.c	BKL: revert back to the old spinlock implementation	2008-05-10 20:58:02 -07:00
klist.c	driver core: Remove completion from struct klist_node	2009-01-06 10:44:30 -08:00
kobject.c	kobject: Cleanup kobject_rename and !CONFIG_SYSFS	2008-10-16 09:24:52 -07:00
kobject_uevent.c	kobject: return the result of uevent sending by netlink	2009-01-06 10:44:31 -08:00
kref.c	kref: add kref_set()	2008-01-24 20:40:05 -08:00
libcrc32c.c	libcrc32c: Fix "crc32c undefined" compilation error	2008-12-25 11:01:42 +11:00
list_debug.c	list debugging: use WARN() instead of BUG()	2008-07-25 10:53:29 -07:00
lmb.c	lmb: Fix reserved region handling in lmb_enforce_memory_limit().	2008-08-15 19:57:57 -07:00
locking-selftest-hardirq.h
locking-selftest-mutex.h
locking-selftest-rlock-hardirq.h
locking-selftest-rlock-softirq.h
locking-selftest-rlock.h
locking-selftest-rsem.h
locking-selftest-softirq.h
locking-selftest-spin-hardirq.h
locking-selftest-spin-softirq.h
locking-selftest-spin.h
locking-selftest-wlock-hardirq.h
locking-selftest-wlock-softirq.h
locking-selftest-wlock.h
locking-selftest-wsem.h
locking-selftest.c
Makefile	bitmap: find_last_bit()	2009-01-01 10:12:19 +10:30
parser.c	vfs: Use const for kernel parser table	2008-10-13 10:10:37 -07:00
percpu_counter.c	Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-06 17:10:04 -08:00
plist.c	Use WARN() in lib/	2008-07-26 12:00:07 -07:00
prio_heap.c	lib: fix sparse shadowed variable warning	2009-01-06 15:59:11 -08:00
prio_tree.c
proportions.c	Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-06 17:10:04 -08:00
radix-tree.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2009-01-07 11:31:52 -08:00
random32.c	random32: seeding improvement	2008-07-30 16:29:19 -07:00
ratelimit.c	__ratelimit() cpu flags can't be static	2008-07-28 16:30:20 -07:00
rbtree.c	rbtree: add const qualifier to some functions	2009-01-10 06:04:33 -08:00
reciprocal_div.c
rwsem-spinlock.c	lib: remove fastcall from lib/*	2008-02-08 09:22:31 -08:00
rwsem.c	x86: fix UML and -regparm=3	2008-01-30 13:33:00 +01:00
scatterlist.c	lib/scatterlist.c: fix kunmap() argument in sg_miter_stop()	2008-11-19 18:49:58 -08:00
sha1.c
show_mem.c	lib: generic show_mem()	2008-07-26 12:00:10 -07:00
smp_processor_id.c	cpumask: change cpumask_of_cpu_ptr to use new cpumask_of_cpu	2008-07-26 16:40:33 +02:00
sort.c	generic swap(): lib/sort.c: rename swap to swap_func	2009-01-08 08:31:14 -08:00
spinlock_debug.c	Use helpers to obtain task pid in printks	2007-10-19 11:53:43 -07:00
string.c	Add a new sysfs_streq() string comparison function	2008-05-01 08:03:59 -07:00
string_helpers.c	[SCSI] lib: string_get_size(): don't hang on zero; no decimals on exact	2008-10-23 11:42:20 -05:00
swiotlb.c	Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-06 17:10:04 -08:00
syscall.c	task_current_syscall	2008-07-26 12:00:10 -07:00
textsearch.c	remove CONFIG_KMOD from lib	2008-07-22 19:24:31 +10:00
ts_bm.c	textsearch: ts_bm: support case insensitive searching in Boyer-Moore algorithm	2008-07-08 02:37:54 -07:00
ts_fsm.c	textsearch: ts_fsm: return error on request for case insensitive search	2008-07-08 02:38:27 -07:00
ts_kmp.c	textsearch: ts_kmp: support case insensitive searching in Knuth-Morris-Pratt algorithm	2008-07-08 02:38:09 -07:00
vsprintf.c	strict_strto* is not strict enough	2009-01-06 15:59:12 -08:00