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	…
Kconfig	…
Kconfig.debug	mm,vmacache: add debug data	2019-07-27 22:08:07 +02:00
Kconfig.kasan	…
Kconfig.kgdb	…
Kconfig.kmemcheck	…
Makefile	…
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	Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD	2017-04-18 17:02:28 +02:00
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	…
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	…
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	…