Joonsoo Kim 7c31190bcf lib/stackdepot: avoid to return 0 handle ... Recently, we allow to save the stacktrace whose hashed value is 0. It causes the problem that stackdepot could return 0 even if in success. User of stackdepot cannot distinguish whether it is success or not so we need to solve this problem. In this patch, 1 bit are added to handle and make valid handle none 0 by setting this bit. After that, valid handle will not be 0 and 0 handle will represent failure correctly. Fixes: 33334e2576 ("lib/stackdepot.c: allow the stack trace hash to be zero") Link: http://lkml.kernel.org/r/1462252403-1106-1-git-send-email-iamjoonsoo.kim@lge.com Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2016-05-05 17:38:53 -07:00
..
842	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2016-03-17 21:38:27 -07:00
fonts
lz4	lib: lz4: cleanup unaligned access efficiency detection	2016-04-13 09:22:49 -07:00
lzo
mpi	lib/mpi: use "static inline" instead of "extern inline"	2016-02-28 03:26:34 +08:00
raid6	powerpc: Create disable_kernel_{fp,altivec,vsx,spe}()	2015-12-01 13:52:25 +11:00
reed_solomon
xz
zlib_deflate
zlib_inflate
.gitignore
argv_split.c
asn1_decoder.c
assoc_array.c	assoc_array: don't call compare_object() on a node	2016-04-06 14:06:48 +01:00
atomic64_test.c	x86/cpufeature: Carve out X86_FEATURE_*	2016-01-30 11:22:17 +01:00
atomic64.c
audit.c
bcd.c
bch.c
bitmap.c	lib/bitmap.c: conversion routines to/from u32 array	2016-02-19 22:54:09 -05:00
bitrev.c
bsearch.c
btree.c	treewide: Remove old email address	2015-11-23 09:44:58 +01:00
bug.c	lib/bug.c: use common WARN helper	2016-03-17 15:09:34 -07:00
build_OID_registry
bust_spinlocks.c
check_signature.c
checksum.c	ipv4: Update parameters for csum_tcpudp_magic to their original types	2016-03-13 23:55:13 -04:00
clz_ctz.c
clz_tab.c
cmdline.c
compat_audit.c
cordic.c
cpu_rmap.c
cpu-notifier-error-inject.c
cpumask.c	cpumask: Export cpumask_any_but()	2016-02-29 09:35:20 +01:00
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
crc7.c
crc8.c
crc16.c
crc32.c
crc32defs.h
ctype.c
debug_info.c
debug_locks.c
debugobjects.c	debugobjects: Allow bigger number of early boot objects	2016-01-27 15:40:59 +01:00
dec_and_lock.c
decompress_bunzip2.c
decompress_inflate.c
decompress_unlz4.c
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
decompress.c
devres.c	devres: use to_pci_dev()	2016-02-07 23:17:59 -08:00
digsig.c
div64.c	__div64_32(): make it overridable at compile time	2015-11-16 14:42:12 -05:00
dma-debug.c	dma-debug: switch check from _text to _stext	2016-01-14 16:00:49 -08:00
dma-noop.c	dma: Provide simple noop dma ops	2016-03-02 17:01:55 +02:00
dump_stack.c	dump_stack: avoid potential deadlocks	2016-02-05 18:10:40 -08:00
dynamic_debug.c	convert a bunch of open-coded instances of memdup_user_nul()	2016-01-04 10:26:58 -05:00
dynamic_queue_limits.c
earlycpio.c
extable.c	extable: add support for relative extables to search and sort routines	2016-02-24 14:57:26 +00:00
fault-inject.c
fdt_empty_tree.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
fdt.c
find_bit.c
flex_array.c
flex_proportions.c	lib+mm: fix few spelling mistakes	2016-02-15 11:18:23 +01:00
gcd.c
gen_crc32table.c
genalloc.c	CPM/QE: use genalloc to manage CPM/QE muram	2015-12-22 17:10:18 -06:00
glob.c
halfmd4.c	lib/halfmd4.c: use rol32 inline function in the ROUND macro	2015-11-06 17:50:42 -08:00
hexdump.c	lib/hexdump.c: truncate output in case of overflow	2015-11-06 17:50:42 -08:00
hweight.c
idr.c	mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd	2015-11-06 17:50:42 -08:00
inflate.c
int_sqrt.c
interval_tree_test.c
interval_tree.c
iomap_copy.c	lib/iomap_copy.c: add __ioread32_copy()	2016-01-20 17:09:18 -08:00
iomap.c
iommu-common.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc	2015-11-05 16:34:48 -08:00
iommu-helper.c
ioremap.c
iov_iter.c	iov_iter: export import_single_range()	2015-12-06 20:42:19 -05:00
irq_poll.c	irq_poll: Fix irq_poll_sched()	2016-01-19 15:26:55 -05:00
irq_regs.c
is_single_threaded.c	lib/is_single_threaded.c: change current_is_single_threaded() to use for_each_thread()	2015-11-06 17:50:42 -08:00
jedec_ddr_data.c
kasprintf.c	lib/kasprintf.c: add sanity check to kvasprintf	2016-01-16 11:17:27 -08:00
Kconfig	mm, kasan: stackdepot implementation. Enable stackdepot for SLAB	2016-03-25 16:37:42 -07:00
Kconfig.debug	parisc,metag: Implement CONFIG_DEBUG_STACK_USAGE option	2016-03-23 15:44:34 +01:00
Kconfig.kasan	mm, kasan: stackdepot implementation. Enable stackdepot for SLAB	2016-03-25 16:37:42 -07:00
Kconfig.kgdb
Kconfig.kmemcheck
Kconfig.ubsan	ubsan: fix tree-wide -Wmaybe-uninitialized false positives	2016-03-22 15:36:02 -07:00
kfifo.c
klist.c	klist: fix starting point removed bug in klist iterators	2016-02-07 22:18:47 -08:00
kobject_uevent.c
kobject.c	kobject: export kset_find_obj() for module use	2016-02-09 17:36:34 -08:00
kstrtox.c	lib: add "on"/"off" support to kstrtobool	2016-03-17 15:09:34 -07:00
kstrtox.h
lcm.c
libcrc32c.c	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2016-01-22 11:58:43 -08:00
list_debug.c	list: kill list_force_poison()	2016-03-09 15:43:42 -08:00
list_sort.c
llist.c	lib/llist.c: fix data race in llist_del_first	2015-11-06 17:50:42 -08:00
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
lockref.c
lru_cache.c	lru_cache: Converted lc_seq_printf_status to return void	2015-11-25 09:22:02 -07:00
Makefile	mm, kasan: stackdepot implementation. Enable stackdepot for SLAB	2016-03-25 16:37:42 -07:00
md5.c
memory-notifier-error-inject.c
memweight.c
net_utils.c
netdev-notifier-error-inject.c	net: Add support for CHANGEUPPER notifier error injection	2015-12-03 11:49:23 -05:00
nlattr.c
nmi_backtrace.c
notifier-error-inject.c
notifier-error-inject.h
of-reconfig-notifier-error-inject.c
oid_registry.c
once.c
parser.c
pci_iomap.c
percpu_counter.c
percpu_ida.c	mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM	2015-11-06 17:50:42 -08:00
percpu_test.c
percpu-refcount.c	lib+mm: fix few spelling mistakes	2016-02-15 11:18:23 +01:00
plist.c
pm-notifier-error-inject.c
proportions.c	treewide: Remove old email address	2015-11-23 09:44:58 +01:00
radix-tree.c	radix_tree: add radix_tree_dump	2016-03-17 15:09:34 -07:00
random32.c	netfilter: meta: add PRANDOM support	2016-02-29 13:55:59 +01:00
ratelimit.c	ratelimit: fix bug in time interval by resetting right begin time	2016-01-21 17:20:51 -08:00
rational.c
rbtree_test.c
rbtree.c
reciprocal_div.c
rhashtable.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-12-31 18:20:10 -05:00
scatterlist.c	scatterlist: fix a typo in comment block of sg_miter_stop()	2016-02-08 10:15:17 -08:00
seq_buf.c	tracing: Use seq_buf_used() in seq_buf_to_user() instead of len	2015-12-23 14:27:20 -05:00
sg_split.c
sha1.c
show_mem.c
smp_processor_id.c
sort.c
stackdepot.c	lib/stackdepot: avoid to return 0 handle	2016-05-05 17:38:53 -07:00
stmp_device.c
string_helpers.c	string_helpers: fix precision loss for some inputs	2016-01-20 17:09:18 -08:00
string.c	lib: move strtobool() to kstrtobool()	2016-03-17 15:09:34 -07:00
strncpy_from_user.c	Use the new batched user accesses in generic user string handling	2015-12-17 10:05:19 -08:00
strnlen_user.c	Use the new batched user accesses in generic user string handling	2015-12-17 10:05:19 -08:00
swiotlb.c
syscall.c
test_bitmap.c	test_bitmap: unit tests for lib/bitmap.c	2016-02-19 22:54:09 -05:00
test_bpf.c	lib/test_bpf: Add additional BPF_ADD tests	2016-04-06 16:47:51 -04:00
test_firmware.c	test: firmware_class: add asynchronous request trigger	2016-01-07 13:44:22 -07:00
test_hexdump.c	test_hexdump: print statistics at the end	2016-01-20 17:09:18 -08:00
test_kasan.c	kasan: test fix: warn if the UAF could not be detected in kmalloc_uaf2	2016-03-25 16:37:42 -07:00
test_module.c
test_printf.c	mm, printk: introduce new format string for flags	2016-03-15 16:55:16 -07:00
test_rhashtable.c	rhashtable-test: allow to retry even if -ENOMEM was returned	2015-11-23 12:36:08 -05:00
test_static_key_base.c
test_static_keys.c	locking/static_keys: Avoid nested functions	2016-02-09 10:27:29 +01:00
test_user_copy.c
test-kstrtox.c
test-string_helpers.c	lib/test-string_helpers.c: fix and improve string_get_size() tests	2016-02-03 08:28:43 -08:00
textsearch.c
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
ubsan.c	UBSAN: run-time undefined behavior sanity checker	2016-01-20 17:09:18 -08:00
ubsan.h	UBSAN: run-time undefined behavior sanity checker	2016-01-20 17:09:18 -08:00
ucs2_string.c	lib/ucs2_string: Correct ucs2 -> utf8 conversion	2016-02-16 12:49:05 +00:00
usercopy.c
uuid.c
vsprintf.c	sscanf: implement basic character sets	2016-03-17 15:09:34 -07:00