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torvalds-linux/lib
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linke li 6ad0d7e0f4 sbitmap: use READ_ONCE to access map->word 
In __sbitmap_queue_get_batch(), map->word is read several times, and
update atomically using atomic_long_try_cmpxchg(). But the first two read
of map->word is not protected.

This patch moves the statement val = READ_ONCE(map->word) forward,
eliminating unprotected accesses to map->word within the function.
It is aimed at reducing the number of benign races reported by KCSAN in
order to focus future debugging effort on harmful races.

Signed-off-by: linke li <lilinke99@qq.com>
Link: https://lore.kernel.org/r/tencent_0B517C25E519D3D002194E8445E86C04AD0A@qq.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-04-26 07:40:28 -06:00
..
842
…
crypto
crypto: lib/mpi - Fix unexpected pointer access in mpi_ec_init
2023-12-22 12:30:19 +08:00
dim
…
fonts
fbdev fixes and cleanups for 6.9-rc1:
2024-03-22 10:09:08 -07:00
kunit
kunit: test: Log the correct filter string in executor_test
2024-02-27 15:25:50 -07:00
lz4
…
lzo
…
math
mul_u64_u64_div_u64: increase precision by conditionally swapping a and b
2024-03-12 13:09:22 -07:00
pldmfw
…
raid6
- Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min
2024-03-14 18:03:09 -07:00
reed_solomon
…
test_fortify
string: Remove strlcpy()
2024-01-19 11:59:11 -08:00
vdso
…
xz
arch: Remove Itanium (IA-64) architecture
2023-09-11 08:13:17 +00:00
zlib_deflate
…
zlib_dfltcc
…
zlib_inflate
…
zstd
zstd: Fix array-index-out-of-bounds UBSAN warning
2023-11-14 17:12:52 -08:00
.gitignore
…
argv_split.c
argv_split: fix kernel-doc warnings
2023-09-19 13:21:33 -07:00
ashldi3.c
…
ashrdi3.c
…
asn1_decoder.c
…
asn1_encoder.c
…
assoc_array.c
assoc_array: fix the return value in assoc_array_insert_mid_shortcut()
2024-03-12 13:09:23 -07:00
atomic64_test.c
…
atomic64.c
…
audit.c
…
base64.c
…
bcd.c
…
bch.c
lib/bch.c: use bitrev instead of internal logic
2023-08-18 10:18:58 -07:00
bitfield_kunit.c
…
bitmap-str.c
lib/bitmap: split-out string-related operations to a separate files
2023-10-14 20:25:22 -07:00
bitmap.c
cpumask: add cpumask_weight_andnot()
2024-02-01 13:06:40 +01:00
bitrev.c
…
bootconfig-data.S
…
bootconfig.c
…
bsearch.c
…
btree.c
…
bucket_locks.c
…
bug.c
…
build_OID_registry
…
buildid.c
- Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min
2024-03-14 18:03:09 -07:00
bust_spinlocks.c
…
check_signature.c
…
checksum_kunit.c
kunit: Fix again checksum tests on big endian CPUs
2024-02-29 09:16:02 -08:00
checksum.c
…
closure.c
closures: CLOSURE_CALLBACK() to fix type punning
2023-11-24 00:29:58 -05:00
clz_ctz.c
lib/clz_ctz.c: Fix __clzdi2() and __ctzdi2() for 32-bit kernels
2023-08-25 13:22:10 -07:00
clz_tab.c
…
cmdline_kunit.c
lib/cmdline: Fix an invalid format specifier in an assertion msg
2024-02-27 15:25:56 -07:00
cmdline.c
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cmpdi2.c
…
compat_audit.c
…
cpu_rmap.c
…
cpumask_kunit.c
…
cpumask.c
bitmap patches for v6.7
2023-11-03 07:08:36 -10:00
crc4.c
…
crc7.c
…
crc8.c
…
crc16.c
…
crc32.c
…
crc32defs.h
…
crc32test.c
…
crc64-rocksoft.c
…
crc64.c
…
crc-ccitt.c
lib: crc_ccitt_false() is identical to crc_itu_t()
2023-12-29 12:22:26 -08:00
crc-itu-t.c
…
crc-t10dif.c
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ctype.c
…
debug_info.c
…
debug_locks.c
…
debugobjects.c
debugobjects: Stop accessing objects after releasing hash bucket lock
2023-11-22 10:41:46 +01:00
dec_and_lock.c
…
decompress_bunzip2.c
…
decompress_inflate.c
…
decompress_unlz4.c
…
decompress_unlzma.c
…
decompress_unlzo.c
…
decompress_unxz.c
arch: Remove Itanium (IA-64) architecture
2023-09-11 08:13:17 +00:00
decompress_unzstd.c
…
decompress.c
…
devmem_is_allowed.c
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devres.c
PCI: Move PCI-specific devres code to drivers/pci/
2024-02-12 10:36:17 -06:00
dhry_1.c
lib: dhry: use ktime_ms_delta() helper
2024-02-22 15:38:52 -08:00
dhry_2.c
…
dhry_run.c
lib: dhry: remove unneeded <linux/mutex.h>
2024-02-22 15:38:52 -08:00
dhry.h
…
digsig.c
…
dump_stack.c
dump_stack: Do not get cpu_sync for panic CPU
2024-02-07 17:23:19 +01:00
dynamic_debug.c
dyndbg: replace kstrdup() + strchr() with kstrdup_and_replace()
2024-03-06 13:07:39 -08:00
dynamic_queue_limits.c
net: dqs: add NIC stall detector based on BQL
2024-03-08 10:23:26 +00:00
earlycpio.c
…
errname.c
parisc: Drop the HP-UX ENOSYM and EREMOTERELEASE error codes
2023-11-25 09:43:18 +01:00
error-inject.c
lib: error-inject: remove error checking for debugfs_create_dir()
2023-08-18 10:18:55 -07:00
errseq.c
…
extable.c
…
fault-inject-usercopy.c
…
fault-inject.c
…
fdt_addresses.c
…
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
…
find_bit.c
…
flex_proportions.c
flex_proportions: remove unused fprop_local_single
2024-02-22 15:38:52 -08:00
fortify_kunit.c
fortify: Improve buffer overflow reporting
2024-02-29 13:38:02 -08:00
fw_table.c
lib/firmware_table: Provide buffer length argument to cdat_table_parse()
2024-03-13 00:03:21 -07:00
gen_crc32table.c
…
gen_crc64table.c
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genalloc.c
Devicetree include cleanups for v6.6:
2023-08-30 17:04:28 -07:00
generic-radix-tree.c
lib/generic-radix-tree.c: Make nodes more reasonably sized
2024-03-13 21:22:26 -04:00
glob.c
…
globtest.c
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group_cpus.c
lib/group_cpus.c: avoid acquiring cpu hotplug lock in group_cpus_evenly
2023-12-06 16:12:46 -08:00
hashtable_test.c
…
hexdump.c
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hweight.c
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idr.c
ida: Fix crash in ida_free when the bitmap is empty
2023-12-21 10:02:28 -08:00
inflate.c
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interval_tree_test.c
…
interval_tree.c
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iomap_copy.c
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iomap.c
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iommu-helper.c
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iov_iter.c
vfs-6.9.misc
2024-03-11 09:38:17 -07:00
irq_poll.c
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irq_regs.c
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is_signed_type_kunit.c
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is_single_threaded.c
…
kasprintf.c
…
Kconfig
PCI: Move pci_iomap.c to drivers/pci/
2024-02-12 10:35:40 -06:00
Kconfig.debug
hardening fixes for v6.9-rc1
2024-03-23 08:43:21 -07:00
Kconfig.kasan
treewide: update LLVM Bugzilla links
2024-02-22 15:38:51 -08:00
Kconfig.kcsan
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Kconfig.kfence
mm/slab: remove CONFIG_SLAB from all Kconfig and Makefile
2023-12-05 11:14:40 +01:00
Kconfig.kgdb
vt: remove superfluous CONFIG_HW_CONSOLE
2024-01-27 19:03:51 -08:00
Kconfig.kmsan
mm/slab: remove CONFIG_SLAB from all Kconfig and Makefile
2023-12-05 11:14:40 +01:00
Kconfig.ubsan
ubsan: Disable signed integer overflow sanitizer on GCC < 8
2024-03-18 11:24:14 -07:00
kfifo.c
…
klist.c
…
kobject_uevent.c
kobject: reduce uevent_sock_mutex scope
2024-02-17 16:20:41 +01:00
kobject.c
Revert "kobject: Remove redundant checks for whether ktype is NULL"
2024-02-08 16:39:25 +00:00
kstrtox.c
kstrtox: consistently use _tolower()
2023-08-21 13:46:25 -07:00
kstrtox.h
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kunit_iov_iter.c
iov_iter: Kunit tests for page extraction
2023-09-09 15:11:49 -07:00
libcrc32c.c
…
linear_ranges.c
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list_debug.c
list: Introduce CONFIG_LIST_HARDENED
2023-08-15 14:57:25 -07:00
list_sort.c
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list-test.c
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llist.c
llist: add llist_del_first_this()
2023-10-16 12:44:06 -04:00
locking-selftest-hardirq.h
…
locking-selftest-mutex.h
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locking-selftest-rlock-hardirq.h
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locking-selftest-rlock-softirq.h
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locking-selftest-rlock.h
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locking-selftest-rsem.h
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locking-selftest-rtmutex.h
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locking-selftest-softirq.h
…
locking-selftest-spin-hardirq.h
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locking-selftest-spin-softirq.h
…
locking-selftest-spin.h
…
locking-selftest-wlock-hardirq.h
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locking-selftest-wlock-softirq.h
…
locking-selftest-wlock.h
…
locking-selftest-wsem.h
…
locking-selftest.c
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lockref.c
…
logic_iomem.c
…
logic_pio.c
minmax: add in_range() macro
2023-08-24 16:20:18 -07:00
lru_cache.c
…
lshrdi3.c
…
lwq.c
lib: add light-weight queuing mechanism.
2023-10-16 12:44:06 -04:00
Makefile
pci-v6.9-changes
2024-03-14 10:58:27 -07:00
maple_tree.c
- Sumanth Korikkar has taught s390 to allocate hotplug-time page frames
2024-03-14 17:43:30 -07:00
memcat_p.c
…
memcpy_kunit.c
Revert "kunit: memcpy: Split slow memcpy tests into MEMCPY_SLOW_KUNIT_TEST"
2024-03-18 11:24:15 -07:00
memory-notifier-error-inject.c
…
memregion.c
…
memweight.c
…
muldi3.c
…
net_utils.c
…
netdev-notifier-error-inject.c
…
nlattr.c
netlink: add nla be16/32 types to minlen array
2024-02-22 19:01:55 -08:00
nmi_backtrace.c
nmi_backtrace: allow excluding an arbitrary CPU
2023-08-18 10:19:00 -07:00
notifier-error-inject.c
lib: remove error checking for debugfs_create_dir()
2023-08-18 10:18:55 -07:00
notifier-error-inject.h
…
objagg.c
…
objpool.c
lib: objpool: fix head overrun on RK3588 SBC
2023-12-01 14:53:55 +09:00
of-reconfig-notifier-error-inject.c
…
oid_registry.c
…
once.c
…
overflow_kunit.c
overflow: Change DEFINE_FLEX to take __counted_by member
2024-03-22 16:25:31 -07:00
packing.c
…
parman.c
…
parser.c
…
percpu_counter.c
percpu_counter: extend _limited_add() to negative amounts
2023-10-18 14:34:14 -07:00
percpu_test.c
…
percpu-refcount.c
…
plist.c
…
pm-notifier-error-inject.c
…
polynomial.c
…
radix-tree.c
radix tree: remove unused variable
2023-08-21 13:07:22 -07:00
radix-tree.h
…
random32.c
…
ratelimit.c
…
rbtree_test.c
…
rbtree.c
…
rcuref.c
locking/atomics: Use atomic_try_cmpxchg_release() to micro-optimize rcuref_put_slowpath()
2023-10-10 10:14:27 +02:00
ref_tracker.c
…
refcount.c
…
rhashtable.c
…
sbitmap.c
sbitmap: use READ_ONCE to access map->word
2024-04-26 07:40:28 -06:00
scatterlist.c
scatterlist: add missing function params to kernel-doc
2023-09-19 13:21:33 -07:00
seq_buf.c
seq_buf: Fix kernel documentation
2024-02-15 12:17:28 -05:00
sg_pool.c
…
sg_split.c
…
siphash_kunit.c
…
siphash.c
…
slub_kunit.c
…
smp_processor_id.c
…
sort.c
lib/sort: optimize heapsort with double-pop variation
2024-02-22 15:38:52 -08:00
stackdepot.c
lib/stackdepot: off by one in depot_fetch_stack()
2024-03-04 17:01:17 -08:00
stackinit_kunit.c
- Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min
2024-03-14 18:03:09 -07:00
stmp_device.c
…
strcat_kunit.c
…
string_helpers_kunit.c
string: Convert helpers selftest to KUnit
2024-03-05 01:55:28 -08:00
string_helpers.c
lib/string_helpers: Add flags param to string_get_size()
2024-02-29 22:34:42 -08:00
string_kunit.c
string: Convert selftest to KUnit
2024-03-05 01:55:28 -08:00
string.c
string: Allow 2-argument strscpy()
2024-02-20 20:47:32 -08:00
strncpy_from_user.c
…
strnlen_user.c
…
strscpy_kunit.c
…
syscall.c
…
test_bitmap.c
lib/bitmap: Introduce bitmap_scatter() and bitmap_gather() helpers
2024-03-11 09:36:11 +00:00
test_bitops.c
…
test_bits.c
…
test_blackhole_dev.c
net: blackhole_dev: fix build warning for ethh set but not used
2024-02-05 12:30:54 +00:00
test_bpf.c
test_bpf: Rename second ALU64_SMOD_X to ALU64_SMOD_K
2023-12-09 21:27:54 -08:00
test_debug_virtual.c
…
test_dynamic_debug.c
…
test_firmware.c
firmware_loader: Expand Firmware upload error codes with firmware invalid error
2023-11-24 18:09:19 -08:00
test_fprobe.c
…
test_fpu.c
…
test_free_pages.c
…
test_hash.c
…
test_hexdump.c
…
test_hmm_uapi.h
…
test_hmm.c
lib: replace kmap() with kmap_local_page()
2023-08-18 10:18:50 -07:00
test_ida.c
Quite a lot of kexec work this time around. Many singleton patches in
2024-01-09 11:46:20 -08:00
test_kmod.c
lib/test_kmod: fix kernel-doc warnings
2024-02-02 10:21:26 -08:00
test_kprobes.c
…
test_linear_ranges.c
…
test_list_sort.c
…
test_lockup.c
…
test_maple_tree.c
test_maple_tree: testing the cyclic allocation
2024-02-21 09:34:26 +01:00
test_memcat_p.c
…
test_meminit.c
mm, treewide: introduce NR_PAGE_ORDERS
2024-01-08 15:27:15 -08:00
test_min_heap.c
…
test_module.c
…
test_objagg.c
…
test_objpool.c
lib: test_objpool: make global variables static
2023-11-10 19:59:04 +09:00
test_parman.c
…
test_printf.c
lib/vsprintf: declare no_hash_pointers in sprintf.h
2023-08-21 13:46:24 -07:00
test_ref_tracker.c
…
test_rhashtable.c
Kill sched.h dependency on rcupdate.h
2023-12-27 11:50:20 -05:00
test_scanf.c
lib: test_scanf: Add explicit type cast to result initialization in test_number_prefix()
2023-08-16 11:47:29 +02:00
test_sort.c
…
test_static_key_base.c
…
test_static_keys.c
…
test_sysctl.c
sysctl: Remove the now superfluous sentinel elements from ctl_table array
2023-12-28 04:57:57 -08:00
test_ubsan.c
ubsan: Reintroduce signed overflow sanitizer
2024-02-20 20:44:49 -08:00
test_user_copy.c
…
test_uuid.c
…
test_vmalloc.c
lib/test_vmalloc.c: use unsigned long constant
2024-03-04 17:01:22 -08:00
test_xarray.c
XArray: add cmpxchg order test
2024-02-22 10:24:48 -08:00
test-kstrtox.c
…
textsearch.c
…
timerqueue.c
…
trace_readwrite.c
lib/trace_readwrite.c:: replace asm-generic/io with linux/io
2023-12-29 12:22:29 -08:00
ts_bm.c
…
ts_fsm.c
…
ts_kmp.c
…
ubsan.c
ubsan: Reintroduce signed overflow sanitizer
2024-02-20 20:44:49 -08:00
ubsan.h
ubsan: Reintroduce signed overflow sanitizer
2024-02-20 20:44:49 -08:00
ucmpdi2.c
…
ucs2_string.c
lib/ucs2_string: Add UCS-2 strscpy function
2023-09-13 10:18:42 -07:00
usercopy.c
…
uuid.c
…
vsprintf.c
lib/vsprintf: Fix %pfwf when current node refcount == 0
2023-12-06 11:06:59 +01:00
win_minmax.c
…
xarray.c
xarray: Document necessary flag in alloc functions
2023-09-05 19:01:38 -04:00
xxhash.c
…