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linux/lib
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Yury Norov 8351760ff5 lib: fix stall in __bitmap_parselist() 
syzbot is catching stalls at __bitmap_parselist()
(https://syzkaller.appspot.com/bug?id=ad7e0351fbc90535558514a71cd3edc11681997a).
The trigger is

  unsigned long v = 0;
  bitmap_parselist("7:,", &v, BITS_PER_LONG);

which results in hitting infinite loop at

    while (a <= b) {
	    off = min(b - a + 1, used_size);
	    bitmap_set(maskp, a, off);
	    a += group_size;
    }

due to used_size == group_size == 0.

Link: http://lkml.kernel.org/r/20180404162647.15763-1-ynorov@caviumnetworks.com
Fixes: 0a5ce0831d04382a ("lib/bitmap.c: make bitmap_parselist() thread-safe and much faster")
Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot <syzbot+6887cbb011c8054e8a3d@syzkaller.appspotmail.com>
Cc: Noam Camus <noamca@mellanox.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-05 21:36:21 -07:00
..
842
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fonts
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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: Fix umul_ppmm() for MIPS64r6
2017-12-22 19:39:09 +11:00
raid6
raid: remove tile specific raid6 implementation
2018-03-26 15:56:28 +02:00
reed_solomon
…
xz
lib/xz: Add fall-through comments to a switch statement
2017-10-12 15:10:12 +02:00
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
…
argv_split.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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
lib/assoc_array: Remove smp_read_barrier_depends()
2017-12-04 10:52:56 -08:00
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
…
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
…
bitmap.c
lib: fix stall in __bitmap_parselist()
2018-04-05 21:36:21 -07:00
bitrev.c
…
bsearch.c
lib/bsearch.c: micro-optimize pivot position calculation
2017-07-10 16:32:35 -07:00
btree.c
btree: avoid variable-length allocations
2018-03-14 16:55:29 -07:00
bucket_locks.c
spinlock: Add library function to allocate spinlock buckets array
2017-12-11 09:58:39 -05:00
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
docs: clean up and add rest of CRC functions to kernel-api.rst
2017-09-26 15:01:20 -06:00
crc32defs.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
crc32test.c
lib: add module support to crc32 tests
2017-02-24 17:46:57 -08:00
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
…
debugobjects.c
debugobjects: Avoid another unused variable warning
2018-03-14 20:20:01 +01:00
dec_and_lock.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
decompress_bunzip2.c
…
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
lib/decompress_unlz4: change module to work with new LZ4 module version
2017-02-24 17:46:57 -08:00
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: combine function devm_ioremap*
2018-03-15 18:08:55 +01:00
digsig.c
lib/digsig: fix dereference of NULL user_key_payload
2017-10-12 17:16:40 +01:00
div64.c
A relatively calm cycle for the docs tree again.
2017-11-13 08:25:06 -08:00
dma-debug.c
dma-debug: fix memory leak in debug_dma_alloc_coherent
2018-02-22 15:02:33 -08:00
dma-direct.c
dma-mapping: Don't clear GFP_ZERO in dma_alloc_attrs
2018-03-28 17:34:23 +02:00
dma-virt.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dump_stack.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +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: Add to documentation tree
2018-01-01 12:40:27 -07:00
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: optimize cpumask_next_and()
2018-02-06 18:32:44 -08:00
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
genalloc.c
lib/genalloc.c: make the avail variable an atomic_long_t
2017-11-17 16:10:02 -08:00
glob.c
lib: add module support to glob tests
2017-02-24 17:46:57 -08:00
globtest.c
lib: add module support to glob tests
2017-02-24 17:46:57 -08:00
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
idr: Fix handling of IDs above INT_MAX
2018-02-26 14:39:30 -05:00
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
lib: Add strongly typed 64bit int_sqrt
2018-02-04 10:17:21 +00:00
interval_tree_test.c
lib/rbtree-test: lower default params
2017-11-17 16:10:02 -08:00
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-common.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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ioremap.c
mm/vmalloc: add interfaces to free unmapped page table
2018-03-22 17:07:01 -07:00
iov_iter.c
new primitive: iov_iter_for_each_range()
2017-10-11 22:36:54 -04:00
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
dma mapping changes for Linux 4.16:
2018-01-31 11:32:27 -08:00
Kconfig.debug
Kbuild updates for v4.17
2018-04-03 15:51:22 -07:00
Kconfig.kasan
kasan: rework Kconfig settings
2018-02-06 18:32:47 -08:00
Kconfig.kgdb
lib: update location of kgdb documentation
2017-05-16 08:44:22 -03:00
Kconfig.ubsan
Kconfig: lib/Kconfig.ubsan fix reference to ubsan documentation
2016-12-14 16:04:08 -08:00
kfifo.c
…
klist.c
…
kobject_uevent.c
net: Drop pernet_operations::async
2018-03-27 13:18:09 -04:00
kobject.c
lib/kobject: Join string literals back
2018-03-15 14:38:55 +01:00
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
bug: switch data corruption check to __must_check
2017-02-24 17:46:56 -08:00
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
lockref.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
lru_cache.c
…
lshrdi3.c
move libgcc.h to include/linux
2017-12-01 13:09:40 -08:00
Makefile
lib/test_find_bit.c: rename to find_bit_benchmark.c
2018-02-06 18:32:44 -08:00
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: Relax attr validation for fixed length types
2017-12-07 14:00:57 -05:00
nmi_backtrace.c
lib/nmi_backtrace.c: fix kernel text address leak
2017-11-17 16:10:02 -08:00
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
lib: Introduce priority array area manager
2017-02-03 16:35:42 -05:00
parser.c
parser: add u64 number parser
2016-12-06 10:17:03 +02:00
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
percpu_ida.c
sched/headers: Prepare to remove the <linux/gfp.h> include from <linux/sched.h>
2017-03-02 08:42:34 +01:00
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
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>
2017-03-02 08:42:27 +01:00
pm-notifier-error-inject.c
…
prime_numbers.c
lib/prime_numbers: Suppress warn on kmalloc failure
2017-01-23 09:17:12 +01:00
radix-tree.c
ida: do zeroing in ida_pre_get()
2018-02-21 15:35:43 -08:00
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
lib/rbtree-test: lower default params
2017-11-17 16:10:02 -08:00
rbtree.c
lib/rbtree,drm/mm: add rbtree_replace_node_cached()
2017-12-14 16:00:48 -08:00
reciprocal_div.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
refcount.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
rhashtable.c
rhashtable: add schedule points
2018-03-31 23:25:39 -04:00
sbitmap.c
blk-mq: improve heavily contended tag case
2017-12-22 11:09:37 -07:00
scatterlist.c
lib/scatterlist: add sg_init_marker() helper
2018-03-30 22:50:15 +02:00
seq_buf.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +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
show_mem.c
lib/show_mem.c: teach show_mem to work with the given nodemask
2017-02-22 16:41:30 -08:00
siphash.c
siphash: implement HalfSipHash1-3 for hash tables
2017-01-09 13:58:57 -05:00
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/strscpy: Shut up KASAN false-positives in strscpy()
2018-02-01 12:20:21 -08:00
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
swiotlb.c
swiotlb: Make swiotlb_{alloc,free}_buffer depend on CONFIG_DMA_DIRECT_OPS
2018-03-23 20:15:38 +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_bitmap.c
lib: fix stall in __bitmap_parselist()
2018-04-05 21:36:21 -07:00
test_bpf.c
test_bpf: Fix NULL vs IS_ERR() check in test_skb_segment()
2018-03-29 14:33:29 -04:00
test_debug_virtual.c
lib: add test module for CONFIG_DEBUG_VIRTUAL
2017-09-08 18:26:49 -07:00
test_firmware.c
test_firmware: fix missing unlock on error in config_num_requests_store()
2018-01-22 16:55:38 +01:00
test_hash.c
lib/test_hash.c: fix warning in preprocessor symbol evaluation
2016-09-01 17:52:01 -07:00
test_hexdump.c
…
test_kasan.c
kasan: remove redundant initialization of variable 'real_size'
2018-02-06 18:32:43 -08:00
test_kmod.c
lib/test_kmod.c: fix limit check on number of test devices created
2018-03-09 16:40:02 -08:00
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_parman.c
lib: fix spelling mistake: "actualy" -> "actually"
2017-02-26 11:03:38 -05:00
test_printf.c
printk: hash addresses printed with %p
2017-11-29 12:09:02 +11:00
test_rhashtable.c
test_rhashtable: add test case for rhltable with duplicate objects
2018-03-07 10:44:03 -05:00
test_siphash.c
siphash: implement HalfSipHash1-3 for hash tables
2017-01-09 13:58:57 -05:00
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_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
…
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: remove returns-nonnull-attribute checks
2018-02-06 18:32:46 -08:00
ubsan.h
lib/ubsan: remove returns-nonnull-attribute checks
2018-02-06 18:32:46 -08:00
ucmpdi2.c
move libgcc.h to include/linux
2017-12-01 13:09:40 -08:00
ucs2_string.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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: avoid misleading "(null)" for %px
2018-02-08 14:21:41 +01:00
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