linux-stable/lib
Christophe Leroy ab10ae1c3b lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user()
The range passed to user_access_begin() by strncpy_from_user() and
strnlen_user() starts at 'src' and goes up to the limit of userspace
although reads will be limited by the 'count' param.

On 32 bits powerpc (book3s/32) access has to be granted for each
256Mbytes segment and the cost increases with the number of segments to
unlock.

Limit the range with 'count' param.

Fixes: 594cc251fd ("make 'user_access_begin()' do 'access_ok()'")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-01-24 09:27:34 -08:00
..
842
crypto crypto: lib/chacha20poly1305 - use chacha20_crypt() 2019-11-22 18:48:39 +08:00
dim
fonts
kunit
livepatch livepatch: Selftests of the API for tracking system state changes 2019-11-01 13:08:29 +01:00
lz4
lzo
math lib/math/rational.c: fix possible incorrect result from rational fractions helper 2019-12-04 19:44:13 -08:00
mpi
raid6 lib: raid6: fix awk build warnings 2019-12-09 18:55:03 +01:00
reed_solomon
vdso lib/vdso: Make __cvdso_clock_getres() static 2020-01-10 19:29:01 +01:00
xz lib/xz: fix XZ_DYNALLOC to avoid useless memory reallocations 2019-11-15 18:34:00 -08:00
zlib_deflate
zlib_inflate
zstd
.gitignore
argv_split.c
ashldi3.c
ashrdi3.c
asn1_decoder.c
assoc_array.c
atomic64.c
atomic64_test.c
audit.c
bcd.c
bch.c
bitmap.c lib/bitmap: introduce bitmap_replace() helper 2019-12-04 19:44:14 -08:00
bitrev.c
bsearch.c lib/bsearch: Use generic type for comparator function 2019-11-14 13:15:11 -05:00
btree.c
bucket_locks.c
bug.c
build_OID_registry
bust_spinlocks.c
check_signature.c
checksum.c
clz_ctz.c
clz_tab.c
cmdline.c
cmpdi2.c
compat_audit.c
cpu_rmap.c lib: cpu_rmap: Use pr_warn instead of pr_warning 2019-10-18 15:01:57 +02:00
cpumask.c
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
crc4.c
crc7.c
crc8.c
crc16.c
crc32.c
crc32defs.h
crc32test.c
crc64.c
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 pci-v5.5-changes 2019-12-03 13:58:22 -08:00
digsig.c
dump_stack.c dump_stack: avoid the livelock of the dump_lock 2019-11-06 08:47:50 -08:00
dynamic_debug.c
dynamic_queue_limits.c
earlycpio.c
errname.c printf: add support for printing symbolic error names 2019-10-17 16:23:25 +02:00
error-inject.c
errseq.c
extable.c
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 bitops: introduce the for_each_set_clump8 macro 2019-12-04 19:44:12 -08:00
find_bit_benchmark.c
flex_proportions.c
gen_crc32table.c
gen_crc64table.c
genalloc.c lib/genalloc.c: rename addr_in_gen_pool to gen_pool_has_addr 2019-12-04 19:44:13 -08:00
generic-radix-tree.c lib/generic-radix-tree.c: add kmemleak annotations 2019-10-14 15:04:00 -07:00
glob.c
globtest.c
hexdump.c
hweight.c
idr.c idr: Fix idr_get_next_ul race with idr_remove 2019-11-01 22:26:34 -04:00
inflate.c
interval_tree.c
interval_tree_test.c
iomap.c
iomap_copy.c
iommu-helper.c
ioremap.c lib: provide a simple generic ioremap implementation 2019-11-11 21:18:20 +01:00
iov_iter.c pipe: Fix bogus dereference in iov_iter_alignment() 2019-12-16 12:48:10 -05:00
irq_poll.c
irq_regs.c
is_single_threaded.c
kasprintf.c
Kconfig lib/: fix Kconfig indentation 2019-12-07 11:00:19 -08:00
Kconfig.debug lib/Kconfig.debug: fix some messed up configurations 2019-12-17 20:59:59 -08:00
Kconfig.kasan kasan: support backing vmalloc space with real shadow memory 2019-12-01 12:59:05 -08:00
Kconfig.kgdb lib/: fix Kconfig indentation 2019-12-07 11:00:19 -08:00
Kconfig.ubsan
kfifo.c
klist.c
kobject.c
kobject_uevent.c
kstrtox.c
kstrtox.h
libcrc32c.c
list-test.c lib/list-test: add a test for the 'list' doubly linked list 2019-11-01 11:13:48 -06:00
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-rtmutex.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
logic_pio.c lib: logic_pio: Enforce LOGIC_PIO_INDIRECT region ops are set at registration 2019-11-05 08:45:25 +08:00
lru_cache.c
lshrdi3.c
Makefile ARM: SoC-related driver updates 2019-12-05 11:43:31 -08:00
memcat_p.c
memory-notifier-error-inject.c
memregion.c lib: Uplevel the pmem "region" ida to a global allocator 2019-11-07 15:44:29 +01:00
memweight.c
muldi3.c
net_utils.c
netdev-notifier-error-inject.c
nlattr.c
nmi_backtrace.c
nodemask.c
notifier-error-inject.c
notifier-error-inject.h
objagg.c
of-reconfig-notifier-error-inject.c
oid_registry.c
once.c
packing.c
parman.c
parser.c
pci_iomap.c
percpu-refcount.c
percpu_counter.c
percpu_test.c
plist.c
pm-notifier-error-inject.c
radix-tree.c idr: Fix idr_alloc_u32 on 32-bit systems 2019-11-03 06:36:50 -05:00
random32.c
ratelimit.c
rbtree.c
rbtree_test.c
refcount.c locking/refcount: Consolidate implementations of refcount_t 2019-11-25 09:15:32 +01:00
rhashtable.c
sbitmap.c sbitmap: only queue kyber's wait callback if not already active 2019-12-20 16:51:54 -07:00
scatterlist.c
seq_buf.c seq_buf: Add printing formatted hex dumps 2019-11-14 13:15:12 -05:00
sg_pool.c
sg_split.c
sha1.c
show_mem.c
siphash.c
smp_processor_id.c
sort.c lib/sort: Move swap, cmp and cmp_r function types for wider use 2019-11-14 13:15:11 -05:00
stackdepot.c
stmp_device.c
string.c
string_helpers.c
strncpy_from_user.c lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user() 2020-01-24 09:27:34 -08:00
strnlen_user.c lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user() 2020-01-24 09:27:34 -08:00
syscall.c
test-kstrtox.c
test-string_helpers.c
test_bitfield.c
test_bitmap.c lib/bitmap: introduce bitmap_replace() helper 2019-12-04 19:44:14 -08:00
test_blackhole_dev.c
test_bpf.c bpf, testing: Introduce 'gso_linear_no_head_frag' skb_segment test 2019-10-30 16:37:08 +01:00
test_debug_virtual.c
test_firmware.c
test_hash.c
test_hexdump.c
test_ida.c
test_kasan.c kasan: add test for vmalloc 2019-12-01 12:59:05 -08:00
test_kmod.c
test_list_sort.c
test_memcat_p.c
test_meminit.c lib/test_meminit.c: add bulk alloc/free tests 2019-12-04 19:44:13 -08:00
test_module.c
test_objagg.c
test_overflow.c
test_parman.c
test_printf.c Device properties framework updates for 5.5-rc1 2019-11-26 19:45:12 -08:00
test_rhashtable.c
test_siphash.c
test_sort.c
test_stackinit.c
test_static_key_base.c
test_static_keys.c
test_string.c
test_strscpy.c
test_sysctl.c
test_ubsan.c
test_user_copy.c usercopy: Avoid soft lockups in test_check_nonzero_user() 2019-10-16 14:56:21 +02:00
test_uuid.c
test_vmalloc.c
test_xarray.c XArray: Fix xas_find returning too many entries 2020-01-17 22:33:33 -05:00
textsearch.c
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
ubsan.c lib/ubsan: don't serialize UBSAN report 2019-12-04 19:44:14 -08:00
ubsan.h int128: move __uint128_t compiler test to Kconfig 2019-11-17 09:02:42 +08:00
ucmpdi2.c
ucs2_string.c
usercopy.c
uuid.c
vsprintf.c rss_stat: add support to detect RSS updates of external mm 2019-12-01 06:29:18 -08:00
win_minmax.c
xarray.c XArray: Fix xas_find returning too many entries 2020-01-17 22:33:33 -05:00
xxhash.c