Stanislaw Gruszka a1da08993f lib/div64.c: off by one in shift ... commit cdc94a37493135e355dfc0b0e086d84e3eadb50d upstream. fls counts bits starting from 1 to 32 (returns 0 for zero argument). If we add 1 we shift right one bit more and loose precision from divisor, what cause function incorect results with some numbers. Corrected code was tested in user-space, see bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=202391 Link: http://lkml.kernel.org/r/1548686944-11891-1-git-send-email-sgruszka@redhat.com Fixes: 658716d19f ("div64_u64(): improve precision on 32bit platforms") Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Reported-by: Siarhei Volkau <lis8215@gmail.com> Tested-by: Siarhei Volkau <lis8215@gmail.com> Acked-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>		2019-07-27 22:11:26 +02:00
..
lz4
lzo
mpi
raid6
reed_solomon
xz
zlib_deflate
zlib_inflate
.gitignore
argv_split.c
asn1_decoder.c	BACKPORT: ASN.1: fix out-of-bounds read when parsing indefinite length item	2019-07-27 21:50:02 +02:00
atomic64.c
atomic64_test.c
audit.c
average.c
bcd.c
bch.c
bitmap.c
bitrev.c
bsearch.c
btree.c
bug.c
build_OID_registry
bust_spinlocks.c
check_signature.c
checksum.c
clz_tab.c
cmdline.c	lib/cmdline.c: fix get_options() overflow while parsing ranges	2019-07-27 21:44:24 +02:00
cordic.c
cpu-notifier-error-inject.c
cpu_rmap.c
cpumask.c	sched/fair, cpumask: Export for_each_cpu_wrap()	2019-07-27 21:44:52 +02:00
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
crc7.c
crc8.c
crc16.c
crc32.c
crc32defs.h
ctype.c
debug_locks.c
debugobjects.c
dec_and_lock.c
decompress.c
decompress_bunzip2.c
decompress_inflate.c
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
devres.c	devres: always use dev_name() in devm_ioremap_resource()	2019-07-27 22:11:19 +02:00
digsig.c	lib/digsig: fix dereference of NULL user_key_payload	2019-07-27 21:44:22 +02:00
div64.c	lib/div64.c: off by one in shift	2019-07-27 22:11:26 +02:00
dma-debug.c
dump_stack.c
dynamic_debug.c
dynamic_queue_limits.c
earlycpio.c
extable.c
fault-inject.c
fdt.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
find_last_bit.c
find_next_bit.c
flex_array.c
flex_proportions.c
gcd.c
gen_crc32table.c
genalloc.c
halfmd4.c
hexdump.c
hweight.c
idr.c
inflate.c
int_sqrt.c	lib/int_sqrt: optimize small argument	2019-07-27 21:46:05 +02:00
interval_tree.c
interval_tree_test_main.c
iomap.c
iomap_copy.c
iommu-helper.c
ioremap.c
iovec.c
irq_regs.c
is_single_threaded.c	lib/is_single_threaded.c: change current_is_single_threaded() to use for_each_thread()	2019-07-27 22:09:23 +02:00
jedec_ddr_data.c
kasprintf.c
Kconfig
Kconfig.debug	mm,vmacache: add debug data	2019-07-27 22:08:07 +02:00
Kconfig.kasan
Kconfig.kgdb
Kconfig.kmemcheck
kfifo.c
klist.c
kobject.c
kobject_uevent.c
kstrtox.c
kstrtox.h
lcm.c
libcrc32c.c
list_debug.c
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
lru_cache.c
Makefile
md5.c
memory-notifier-error-inject.c
memweight.c
nlattr.c
notifier-error-inject.c
notifier-error-inject.h
of-reconfig-notifier-error-inject.c
oid_registry.c
parser.c
pci_iomap.c
percpu_counter.c
plist.c
pm-notifier-error-inject.c
prio_heap.c
proportions.c
qmi_encdec.c
qmi_encdec_priv.h
radix-tree.c
random32.c	random32: include missing header file	2017-09-08 18:50:21 +00:00
ratelimit.c
rational.c
rbtree.c
rbtree_test.c
reciprocal_div.c
scatterlist.c
sha1.c
show_mem.c
smp_processor_id.c
sort.c
stmp_device.c
string.c	lib/string.c: remove duplicated function	2019-07-27 22:09:02 +02:00
string_helpers.c
strncpy_from_user.c
strnlen_user.c
swiotlb.c
syscall.c
test-kstrtox.c
test-string_helpers.c
textsearch.c
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
ucs2_string.c
usercopy.c
uuid.c
vsprintf.c