shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-09 04:10:18 +09:00
Code Issues Packages Projects Releases Wiki Activity
Files
c98875d930e915d01e8c40c7d3c16f00b3c8abe1
linux/lib
History
Stanislaw Gruszka a7e90c1892 lib/div64.c: off by one in shift 
[ Upstream commit cdc94a3749 ]

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: Sasha Levin <sashal@kernel.org>
2019-04-20 09:16:05 +02:00
..
842
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fonts
lib/fonts: convert comments to utf-8
2018-08-23 18:48:43 -07:00
lz4
lib/lz4: make arrays static const, reduces object code size
2017-10-03 17:54:25 -07:00
lzo
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mpi
lib/mpi: remove redundant variable esign
2018-08-07 17:51:39 +08:00
raid6
ARM: 8833/1: Ensure that NEON code always compiles with Clang
2019-04-05 22:33:08 +02:00
reed_solomon
reed_solomon: Fix kernel-doc
2018-07-10 15:00:52 -06:00
xz
lib/xz: Put CRC32_POLY_LE in xz_private.h
2018-10-02 08:44:59 +10:00
zlib_deflate
…
zlib_inflate
lib/zlib_inflate/inftrees.c: fix potential buffer overflow
2017-05-08 17:15:12 -07:00
zstd
lib: zstd: clean up Makefile for simpler composite object handling
2018-03-26 02:01:27 +09:00
.gitignore
lib: add crc64 calculation routines
2018-08-22 10:52:48 -07:00
argv_split.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
ashldi3.c
move libgcc.h to include/linux
2017-12-01 13:09:40 -08:00
ashrdi3.c
move libgcc.h to include/linux
2017-12-01 13:09:40 -08:00
asn1_decoder.c
ASN.1: check for error from ASN1_OP_END__ACT actions
2017-12-08 15:13:27 +00:00
assoc_array.c
assoc_array: Fix shortcut creation
2019-03-23 20:09:48 +01:00
atomic64_test.c
lib/atomic64_test.c: add a test that atomic64_inc_not_zero() returns an int
2017-07-14 15:05:13 -07:00
atomic64.c
atomics/generic: Define atomic64_fetch_add_unless()
2018-06-21 14:25:21 +02:00
audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
bcd.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
bch.c
lib/bch: fix possible stack overrun
2018-10-12 09:17:46 +02:00
bitmap.c
lib/bitmap.c: drop unnecessary 0 check for u32 array operations
2018-08-22 10:52:48 -07:00
bitrev.c
…
bsearch.c
kprobes: Prohibit probing on bsearch()
2019-04-05 22:33:08 +02:00
btree.c
btree: avoid variable-length allocations
2018-03-14 16:55:29 -07:00
bucket_locks.c
ila: make lockdep happy again
2018-08-16 12:14:42 -07:00
bug.c
lib/bug.c: exclude non-BUG/WARN exceptions from report_bug()
2018-03-09 16:40:01 -08:00
build_OID_registry
…
bust_spinlocks.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
chacha20.c
crypto: chacha20 - use rol32() macro from bitops.h
2018-01-12 23:03:01 +11:00
check_signature.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
checksum.c
…
clz_ctz.c
…
clz_tab.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cmdline.c
lib/cmdline.c: remove meaningless comment
2017-09-08 18:26:49 -07:00
cmpdi2.c
move libgcc.h to include/linux
2017-12-01 13:09:40 -08:00
compat_audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cordic.c
…
cpu_rmap.c
…
cpumask.c
lib: optimize cpumask_next_and()
2018-02-06 18:32:44 -08:00
crc4.c
docs: clean up and add rest of CRC functions to kernel-api.rst
2017-09-26 15:01:20 -06:00
crc7.c
…
crc8.c
docs: clean up and add rest of CRC functions to kernel-api.rst
2017-09-26 15:01:20 -06:00
crc16.c
…
crc32.c
lib/crc: Use consistent naming for CRC-32 polynomials
2018-07-27 19:04:33 +08:00
crc32defs.h
lib/crc: Move polynomial definition to separate header
2018-07-27 19:04:33 +08:00
crc32test.c
…
crc64.c
lib: add crc64 calculation routines
2018-08-22 10:52:48 -07:00
crc-ccitt.c
lib/crc-ccitt: Add CCITT-FALSE CRC16 variant
2018-01-08 10:08:33 +00:00
crc-itu-t.c
…
crc-t10dif.c
…
ctype.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
debug_info.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
debug_locks.c
locking/lockdep: Fix debug_locks off performance problem
2018-11-13 11:08:20 -08:00
debugobjects.c
debugobjects: avoid recursive calls with kmemleak
2018-12-17 09:24:41 +01:00
dec_and_lock.c
atomic: Add irqsave variant of atomic_dec_and_lock()
2018-06-12 23:33:24 +02:00
decompress_bunzip2.c
lib: Use existing define with polynomial
2018-07-27 19:16:38 +08:00
decompress_inflate.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
decompress_unlz4.c
…
decompress_unlzma.c
…
decompress_unlzo.c
…
decompress_unxz.c
…
decompress.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
devres.c
devres: Add devm_of_iomap()
2018-07-23 15:22:39 +10:00
digsig.c
lib/digsig: fix dereference of NULL user_key_payload
2017-10-12 17:16:40 +01:00
div64.c
lib/div64.c: off by one in shift
2019-04-20 09:16:05 +02:00
dump_stack.c
printk: move dump stack related code to lib/dump_stack.c
2018-03-15 13:25:36 +01:00
dynamic_debug.c
dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0
2017-11-17 16:10:01 -08:00
dynamic_queue_limits.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2017-11-15 11:56:19 -08:00
earlycpio.c
…
error-inject.c
error-injection: Add injectable error types
2018-01-12 17:33:38 -08:00
errseq.c
errseq: Always report a writeback error once
2018-04-27 08:51:26 -04:00
extable.c
lib/extable.c: use bsearch() library function in search_extable()
2017-07-10 16:32:35 -07:00
fault-inject.c
fault-inject: fix wrong should_fail() decision in task context
2017-08-10 15:54:06 -07:00
fdt_empty_tree.c
…
fdt_ro.c
…
fdt_rw.c
…
fdt_strerror.c
…
fdt_sw.c
…
fdt_wip.c
…
fdt.c
…
find_bit_benchmark.c
lib/find_bit_benchmark.c: avoid soft lockup in test_find_first_bit()
2018-05-11 17:28:45 -07:00
find_bit.c
lib: optimize cpumask_next_and()
2018-02-06 18:32:44 -08:00
flex_array.c
…
flex_proportions.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
gcd.c
lib/gcd: add kernel-doc notation
2017-10-07 10:45:14 -06:00
gen_crc32table.c
lib/crc: Use consistent naming for CRC-32 polynomials
2018-07-27 19:04:33 +08:00
gen_crc64table.c
lib: add crc64 calculation routines
2018-08-22 10:52:48 -07:00
genalloc.c
lib/genalloc.c: make the avail variable an atomic_long_t
2017-11-17 16:10:02 -08:00
glob.c
…
globtest.c
…
hexdump.c
lib/hexdump.c: return -EINVAL in case of error in hex2bin()
2017-09-08 18:26:49 -07:00
hweight.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
idr.c
ida: Change ida_get_new_above to return the id
2018-08-21 23:54:21 -04:00
inflate.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
int_sqrt.c
fix int_sqrt64() for very large numbers
2019-01-22 21:40:34 +01:00
interval_tree_test.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
interval_tree.c
…
iomap_copy.c
…
iomap.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
iommu-helper.c
iommu-helper: mark iommu_is_span_boundary as inline
2018-05-09 06:55:44 +02:00
ioremap.c
ioremap: Update pgtable free interfaces with addr
2018-07-04 21:37:08 +02:00
iov_iter.c
lib/iov_iter: Fix pipe handling in _copy_to_iter_mcsafe()
2018-07-16 00:05:05 +02:00
irq_poll.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irq_regs.c
…
is_single_threaded.c
sched/headers: Prepare to move 'init_task' and 'init_thread_union' from <linux/sched.h> to <linux/sched/task.h>
2017-03-02 08:42:38 +01:00
jedec_ddr_data.c
…
kasprintf.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Kconfig
lib/Kconfig: remove 'default n' for tests
2018-08-22 10:52:48 -07:00
Kconfig.debug
lib/Kconfig.debug: fix three typos in help text
2018-09-04 16:45:02 -07:00
Kconfig.kasan
kasan: only select SLUB_DEBUG with SYSFS=y
2018-07-26 19:38:03 -07:00
Kconfig.kgdb
lib: update location of kgdb documentation
2017-05-16 08:44:22 -03:00
Kconfig.ubsan
lib/ubsan: remove null-pointer checks
2018-08-10 20:19:58 -07:00
kfifo.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
klist.c
scsi: klist: Make it safe to use klists in atomic context
2018-07-02 16:20:23 -04:00
kobject_uevent.c
netns: restrict uevents
2018-05-01 10:22:41 -04:00
kobject.c
Merge tag 'driver-core-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2018-08-18 11:44:53 -07:00
kstrtox.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
kstrtox.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
lcm.c
…
libcrc32c.c
libcrc32c: Add crc32c_impl function
2018-03-26 15:09:38 +02:00
list_debug.c
lib/list_debug.c: print unmangled addresses
2018-04-11 10:28:35 -07:00
list_sort.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
llist.c
locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE()
2017-10-25 11:01:08 +02:00
locking-selftest-hardirq.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
locking-selftest-mutex.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
locking-selftest-rlock-hardirq.h
…
locking-selftest-rlock-softirq.h
…
locking-selftest-rlock.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
locking-selftest-rsem.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
locking-selftest-rtmutex.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
locking-selftest-softirq.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
locking-selftest-spin-hardirq.h
…
locking-selftest-spin-softirq.h
…
locking-selftest-spin.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
locking-selftest-wlock-hardirq.h
…
locking-selftest-wlock-softirq.h
…
locking-selftest-wlock.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
locking-selftest-wsem.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
locking-selftest.c
locking: Implement an algorithm choice for Wound-Wait mutexes
2018-07-03 09:44:36 +02:00
lockref.c
lockref: Add lockref_put_not_zero
2018-04-12 09:41:19 -07:00
logic_pio.c
lib: Add generic PIO mapping method
2018-03-21 17:18:34 -05:00
lru_cache.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
lshrdi3.c
move libgcc.h to include/linux
2017-12-01 13:09:40 -08:00
Makefile
lib/bch: fix possible stack overrun
2018-10-12 09:17:46 +02:00
memory-notifier-error-inject.c
…
memweight.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
muldi3.c
move libgcc.h to include/linux
2017-12-01 13:09:40 -08:00
net_utils.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
netdev-notifier-error-inject.c
…
nlattr.c
netlink: Return extack message if attribute validation fails
2018-06-28 16:18:04 +09:00
nmi_backtrace.c
printk/nmi: Prevent deadlock when accessing the main log buffer in NMI
2018-07-09 14:10:40 +02:00
nodemask.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
notifier-error-inject.c
…
notifier-error-inject.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
of-reconfig-notifier-error-inject.c
…
oid_registry.c
509: fix printing uninitialized stack memory when OID is empty
2017-12-08 15:13:28 +00:00
once.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2017-11-04 09:26:51 +09:00
parman.c
…
parser.c
…
pci_iomap.c
PCI: Add SPDX GPL-2.0 when no license was specified
2018-01-26 11:45:16 -06:00
percpu_counter.c
notifier: Remove notifier header file wherever not used
2018-08-30 12:56:40 +02:00
percpu_test.c
…
percpu-refcount.c
percpu_ref: Update doc to dissuade users from depending on internal RCU grace periods
2018-03-19 10:09:44 -07:00
plist.c
…
pm-notifier-error-inject.c
…
prime_numbers.c
…
radix-tree.c
ida: Remove old API
2018-08-21 23:54:21 -04:00
random32.c
treewide: Switch DEFINE_TIMER callbacks to struct timer_list *
2017-11-21 15:57:05 -08:00
ratelimit.c
lib/ratelimit.c: use deferred printk() version
2017-10-03 17:54:26 -07:00
rational.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
rbtree_test.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
rbtree.c
lib/rbtree,drm/mm: add rbtree_replace_node_cached()
2017-12-14 16:00:48 -08:00
reciprocal_div.c
lib: reciprocal_div: implement the improved algorithm on the paper mentioned
2018-07-07 01:45:31 +02:00
refcount.c
Merge tag 'v4.18-rc5' into locking/core, to pick up fixes
2018-07-17 09:27:43 +02:00
rhashtable.c
rhashtable: Still do rehash when we get EEXIST
2019-04-03 06:26:17 +02:00
sbitmap.c
treewide: kzalloc_node() -> kcalloc_node()
2018-06-12 16:19:22 -07:00
scatterlist.c
Merge tag 'for-linus-20180629' of git://git.kernel.dk/linux-block
2018-06-30 10:47:46 -07:00
seq_buf.c
seq_buf: Make seq_buf_puts() null-terminate the buffer
2019-02-12 19:47:16 +01:00
sg_pool.c
…
sg_split.c
…
sha1.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sha256.c
kernel/kexec_file.c: move purgatories sha256 to common code
2018-04-13 17:10:28 -07:00
show_mem.c
…
siphash.c
…
smp_processor_id.c
lib: do not use print_symbol()
2018-01-05 15:24:00 +01:00
sort.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
stackdepot.c
lib/stackdepot.c: use a non-instrumented version of memcmp()
2018-02-06 18:32:44 -08:00
stmp_device.c
…
string_helpers.c
mm: treewide: remove GFP_TEMPORARY allocation flag
2017-09-13 18:53:16 -07:00
string.c
lib/string.c: implement a basic bcmp
2019-04-17 08:38:45 +02:00
strncpy_from_user.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
strnlen_user.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
syscall.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
test_bitfield.c
bitfield: add tests
2018-06-27 18:58:49 +03:00
test_bitmap.c
lib/test_bitmap.c: fix bitmap optimisation tests to report errors correctly
2018-05-18 17:17:12 -07:00
test_bpf.c
test_bpf: flag tests that cannot be jited on s390
2018-06-28 23:58:39 +02:00
test_debug_virtual.c
lib: fix build failure in CONFIG_DEBUG_VIRTUAL test
2019-01-13 09:51:10 +01:00
test_firmware.c
test_firmware: fix error return getting clobbered
2018-12-13 09:16:10 +01:00
test_hash.c
…
test_hexdump.c
test_hexdump: use memcpy instead of strncpy
2018-12-08 12:59:06 +01:00
test_ida.c
test_ida: Fix lockdep warning
2018-10-15 16:31:29 -04:00
test_kasan.c
kasan: fix invalid-free test crashing the kernel
2018-04-11 10:28:32 -07:00
test_kmod.c
lib/test_kmod.c: potential double free in error handling
2019-03-13 14:02:32 -07:00
test_list_sort.c
lib/test: delete five error messages for failed memory allocations
2017-11-17 16:10:01 -08:00
test_module.c
…
test_overflow.c
test_overflow: Add shift overflow tests
2018-08-08 09:47:26 -06:00
test_parman.c
…
test_printf.c
Revert "lib/test_printf.c: call wait_for_random_bytes() before plain %p tests"
2018-06-25 13:44:20 +02:00
test_rhashtable.c
lib/test_rhashtable: Make test_insert_dup() allocate its hash table dynamically
2019-02-12 19:47:21 +01:00
test_siphash.c
…
test_sort.c
lib/test_sort.c: add module unload support
2018-02-06 18:32:45 -08:00
test_static_key_base.c
…
test_static_keys.c
…
test_string.c
lib: add module support to string tests
2017-11-17 16:10:01 -08:00
test_sysctl.c
test_sysctl: test against int proc_dointvec() array support
2017-07-12 16:26:00 -07:00
test_ubsan.c
lib/test_ubsan.c: make test_ubsan_misaligned_access() static
2018-04-11 10:28:35 -07:00
test_user_copy.c
treewide: simplify Kconfig dependencies for removed archs
2018-03-26 15:55:57 +02:00
test_uuid.c
uuid: fix incorrect uuid_equal conversion in test_uuid_test
2017-07-21 09:38:30 +02:00
test-kstrtox.c
…
test-string_helpers.c
…
textsearch.c
textsearch: fix kernel-doc warnings and add kernel-api section
2018-04-16 18:53:13 -04:00
timerqueue.c
timerqueue: Document return values of timerqueue_add/del()
2017-12-29 23:13:10 +01:00
ts_bm.c
…
ts_fsm.c
textsearch: fix typos in library helpers
2017-10-22 03:14:07 +01:00
ts_kmp.c
textsearch: fix typos in library helpers
2017-10-22 03:14:07 +01:00
ubsan.c
lib/ubsan.c: don't mark __ubsan_handle_builtin_unreachable as noreturn
2018-11-21 09:19:24 +01:00
ubsan.h
lib/ubsan: remove returns-nonnull-attribute checks
2018-02-06 18:32:46 -08:00
ucmpdi2.c
Add notrace to lib/ucmpdi2.c
2018-04-23 16:39:35 +01:00
ucs2_string.c
lib/ucs2_string.c: add MODULE_LICENSE()
2018-06-07 17:34:39 -07:00
usercopy.c
Fix misannotated out-of-line _copy_to_user()
2017-12-11 09:35:11 -05:00
uuid.c
Documentation: add UUID/GUID to kernel-api
2017-12-11 15:03:08 -07:00
vsprintf.c
vsprintf: Fix off-by-one bug in bstr_printf() processing dereferenced pointers
2018-10-05 10:17:15 -04:00
win_minmax.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
xxhash.c
lib: Add xxhash module
2017-08-15 09:02:07 -07:00