linux/lib
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
reed_solomon
xz
zlib_deflate
zlib_inflate
.gitignore
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
Makefile mm, kasan: stackdepot implementation. Enable stackdepot for SLAB 2016-03-25 16:37:42 -07:00
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.c
atomic64_test.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
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-notifier-error-inject.c
cpu_rmap.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
dec_and_lock.c
decompress.c
decompress_bunzip2.c
decompress_inflate.c
decompress_unlz4.c
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
devres.c
digsig.c
div64.c
dma-debug.c
dma-noop.c dma: Provide simple noop dma ops 2016-03-02 17:01:55 +02:00
dump_stack.c
dynamic_debug.c
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.c
fdt_empty_tree.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.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
glob.c
halfmd4.c
hexdump.c
hweight.c
idr.c
inflate.c
int_sqrt.c
interval_tree.c
interval_tree_test.c
iomap.c
iomap_copy.c
iommu-common.c
iommu-helper.c
ioremap.c
iov_iter.c
irq_poll.c
irq_regs.c
is_single_threaded.c
jedec_ddr_data.c
kasprintf.c
kfifo.c
klist.c
kobject.c
kobject_uevent.c
kstrtox.c lib: add "on"/"off" support to kstrtobool 2016-03-17 15:09:34 -07:00
kstrtox.h
lcm.c
libcrc32c.c
list_debug.c list: kill list_force_poison() 2016-03-09 15:43:42 -08:00
list_sort.c
llist.c
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
md5.c
memory-notifier-error-inject.c
memweight.c
net_utils.c
netdev-notifier-error-inject.c
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-refcount.c lib+mm: fix few spelling mistakes 2016-02-15 11:18:23 +01:00
percpu_counter.c
percpu_ida.c
percpu_test.c
plist.c
pm-notifier-error-inject.c
proportions.c
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
rational.c
rbtree.c
rbtree_test.c
reciprocal_div.c
rhashtable.c
scatterlist.c
seq_buf.c
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.c lib: move strtobool() to kstrtobool() 2016-03-17 15:09:34 -07:00
string_helpers.c
strncpy_from_user.c
strnlen_user.c
swiotlb.c
syscall.c
test-kstrtox.c
test-string_helpers.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_hexdump.c
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
test_static_key_base.c
test_static_keys.c
test_user_copy.c
textsearch.c
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
ubsan.c
ubsan.h
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