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
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