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aba6f11e23f89e63ae7f2ceb22ffc35b8f359cc6
linux-rockchip/lib
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linke li aba6f11e23 sbitmap: use READ_ONCE to access map->word 
[ Upstream commit 6ad0d7e0f4b68f87a98ea2b239123b7d865df86b ]

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>
Stable-dep-of: 72d04bdcf3f7 ("sbitmap: fix io hung due to race on sbitmap_word::cleared")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-08-03 08:49:29 +02:00
..
842
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crypto
crypto: lib - remove unneeded selection of XOR_BLOCKS
2022-08-26 18:40:14 +08:00
dim
linux/dim: Do nothing if no time delta between samples
2023-05-24 17:32:31 +01:00
fonts
lib/fonts: fix undefined behavior in bit shift for get_default_font
2022-12-31 13:31:56 +01:00
kunit
kunit: Fix timeout message
2024-07-11 12:47:08 +02:00
livepatch
selftests/livepatch: better synchronize test_klp_callbacks_busy
2022-06-15 10:29:10 +02:00
lz4
lib: make LZ4_decompress_safe_forceExtDict() static
2022-07-17 17:31:39 -07:00
lzo
lib/lzo/lzo1x_compress.c: replace ternary operator with min() and min_t()
2022-07-29 18:12:34 -07:00
math
…
mpi
crypto: lib/mpi - Fix unexpected pointer access in mpi_ec_init
2024-02-23 09:12:49 +01:00
pldmfw
…
raid6
…
reed_solomon
treewide: use get_random_u32() when possible
2022-10-11 17:42:58 -06:00
test_fortify
…
vdso
lib/vdso: use "grep -E" instead of "egrep"
2022-11-23 19:50:15 +01:00
xz
…
zlib_deflate
…
zlib_dfltcc
…
zlib_inflate
…
zstd
zstd: Fix array-index-out-of-bounds UBSAN warning
2023-12-13 18:39:04 +01:00
.gitignore
bootconfig: Support embedding a bootconfig file in kernel
2022-04-26 17:58:51 -04:00
argv_split.c
…
ashldi3.c
…
ashrdi3.c
…
asn1_decoder.c
…
asn1_encoder.c
…
assoc_array.c
assoc_array: Fix BUG_ON during garbage collect
2022-06-01 18:29:06 -07:00
atomic64_test.c
…
atomic64.c
…
audit.c
…
base64.c
lib/base64: RFC4648-compliant base64 encoding
2022-08-02 17:14:47 -06:00
bcd.c
…
bch.c
…
bitfield_kunit.c
…
bitmap.c
lib/bitmap: drop optimization of bitmap_{from,to}_arr64
2023-07-19 16:21:58 +02:00
bitrev.c
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bootconfig-data.S
bootconfig: Support embedding a bootconfig file in kernel
2022-04-26 17:58:51 -04:00
bootconfig.c
bootconfig: use memblock_free_late to free xbc memory to buddy
2024-04-27 17:07:17 +02:00
bsearch.c
…
btree.c
lib/btree: simplify btree_{lookup|update}
2022-06-16 19:58:21 -07:00
bucket_locks.c
…
bug.c
cpuidle: lib/bug: Disable rcu_is_watching() during WARN/BUG
2023-03-10 09:33:47 +01:00
build_OID_registry
…
buildid.c
…
bust_spinlocks.c
kernel/panic: Drop unblank_screen call
2022-09-01 16:55:35 +02:00
check_signature.c
…
checksum.c
…
clz_ctz.c
lib/clz_ctz.c: Fix __clzdi2() and __ctzdi2() for 32-bit kernels
2023-08-30 16:11:08 +02:00
clz_tab.c
…
cmdline_kunit.c
lib/cmdline: Fix an invalid format specifier in an assertion msg
2024-03-26 18:20:28 -04:00
cmdline.c
lib/cmdline: avoid page fault in next_arg
2022-09-11 21:55:06 -07:00
cmpdi2.c
…
compat_audit.c
…
cpu_rmap.c
lib: cpu_rmap: Fix potential use-after-free in irq_cpu_rmap_release()
2023-06-14 11:15:22 +02:00
cpumask_kunit.c
lib/test_cpumask: Add for_each_cpu_and(not) tests
2022-10-06 05:57:36 -07:00
cpumask.c
lib/find_bit: add find_next{,_and}_bit_wrap
2022-10-01 10:22:57 -07:00
crc4.c
…
crc7.c
…
crc8.c
…
crc16.c
…
crc32.c
…
crc32defs.h
…
crc32test.c
…
crc64-rocksoft.c
…
crc64.c
…
crc-ccitt.c
…
crc-itu-t.c
crc-itu-t: fix typo in CRC ITU-T polynomial comment
2022-06-07 10:27:38 +02:00
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
2024-02-05 20:12:47 +00:00
dec_and_lock.c
…
decompress_bunzip2.c
…
decompress_inflate.c
…
decompress_unlz4.c
…
decompress_unlzma.c
…
decompress_unlzo.c
…
decompress_unxz.c
…
decompress_unzstd.c
…
decompress.c
…
devmem_is_allowed.c
…
devres.c
devres: remove devm_ioremap_np
2022-09-01 18:04:43 +02:00
digsig.c
…
dump_stack.c
printk: rename cpulock functions
2022-04-22 21:30:57 +02:00
dynamic_debug.c
dyndbg: fix old BUG_ON in >control parser
2024-05-17 11:56:20 +02:00
dynamic_queue_limits.c
…
earlycpio.c
lib: move from strlcpy with unused retval to strscpy
2022-09-11 21:55:10 -07:00
errname.c
parisc: Drop the HP-UX ENOSYM and EREMOTERELEASE error codes
2023-12-08 08:51:15 +01:00
error-inject.c
lib/error-inject: traverse list with mutex
2022-07-17 17:31:38 -07:00
errseq.c
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extable.c
…
fault-inject-usercopy.c
…
fault-inject.c
mm: fix unexpected changes to {failslab|fail_page_alloc}.attr
2022-11-22 18:50:44 -08:00
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
treewide: use prandom_u32_max() when possible, part 1
2022-10-11 17:42:55 -06:00
find_bit.c
lib/find_bit: Introduce find_next_andnot_bit()
2022-10-06 05:57:36 -07:00
flex_proportions.c
flex_proportions: Disable preemption entering the write section.
2022-09-19 14:35:08 +02:00
fortify_kunit.c
fortify: Adjust KUnit test for modular build
2022-09-14 07:04:15 -07:00
gen_crc32table.c
…
gen_crc64table.c
…
genalloc.c
…
generic-radix-tree.c
lib/generic-radix-tree.c: Don't overflow in peek()
2023-11-28 17:06:54 +00:00
glob.c
lib: remove back_str initialization
2022-04-29 14:38:01 -07:00
globtest.c
…
group_cpus.c
genirq/affinity: Only build SMP-only helper functions on SMP kernels
2024-01-10 17:10:36 +01:00
hexdump.c
hex2bin: fix access beyond string end
2022-04-27 10:57:33 -07:00
hweight.c
…
idr.c
ida: Fix crash in ida_free when the bitmap is empty
2024-01-20 11:50:09 +01:00
inflate.c
…
interval_tree_test.c
…
interval_tree.c
…
iomap_copy.c
…
iomap.c
kmsan: add iomap support
2022-10-03 14:03:21 -07:00
iommu-helper.c
…
iov_iter.c
instrumented.h: allow instrumenting both sides of copy_from_user()
2022-10-03 14:03:18 -07:00
irq_poll.c
lib/irq_poll: Prevent softirq pending leak in irq_poll_cpu_dead()
2022-04-13 21:32:21 +02:00
irq_regs.c
…
is_signed_type_kunit.c
lib: Improve the is_signed_type() kunit test
2022-09-07 16:37:27 -07:00
is_single_threaded.c
…
kasprintf.c
…
Kconfig
Merge tag 'v6.1-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2022-10-10 13:04:25 -07:00
Kconfig.debug
bpf, kconfig: Fix DEBUG_INFO_BTF_MODULES Kconfig definition
2024-05-17 11:55:56 +02:00
Kconfig.kasan
kasan: drop CONFIG_KASAN_TAGS_IDENTIFY
2022-10-03 14:02:57 -07:00
Kconfig.kcsan
objtool: Make noinstr hacks optional
2022-04-22 12:32:04 +02:00
Kconfig.kfence
kfence: allow use of a deferrable timer
2022-03-22 15:57:11 -07:00
Kconfig.kgdb
parisc: Convert PDC console to an early console
2022-10-11 12:01:24 +02:00
Kconfig.kmsan
kmsan: make sure PREEMPT_RT is off
2022-11-08 15:57:24 -08:00
Kconfig.ubsan
ubsan: disable UBSAN_DIV_ZERO for clang
2022-07-14 15:45:26 -07:00
kfifo.c
…
klist.c
…
kobject_uevent.c
…
kobject.c
kobject: Add sanity check for kset->kobj.ktype in kset_register()
2023-09-23 11:11:07 +02:00
kstrtox.c
lib/kstrtox.c: add "false"/"true" support to kstrtobool()
2022-05-13 07:20:13 -07:00
kstrtox.h
…
libcrc32c.c
…
linear_ranges.c
…
list_debug.c
lib/list_debug.c: Detect uninitialized lists
2022-06-16 19:58:20 -07:00
list_sort.c
…
list-test.c
list: test: Test the hlist structure
2022-04-05 13:32:27 -06:00
llist.c
llist: use try_cmpxchg in llist_add_batch and llist_del_first
2022-09-11 21:55:06 -07:00
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
lockref: stop doing cpu_relax in the cmpxchg loop
2023-02-01 08:34:34 +01:00
logic_iomem.c
…
logic_pio.c
…
lru_cache.c
lib/lru_cache: fix error free handing in lc_create
2022-07-17 17:31:37 -07:00
lshrdi3.c
…
Makefile
genirq/affinity: Move group_cpus_evenly() into lib/
2024-01-10 17:10:33 +01:00
maple_tree.c
maple_tree: fix mas_empty_area_rev() null pointer dereference
2024-06-16 13:41:31 +02:00
memcat_p.c
…
memcpy_kunit.c
lib: memcpy_kunit: Fix an invalid format specifier in an assertion msg
2024-03-26 18:20:28 -04:00
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
2024-03-06 14:45:06 +00:00
nmi_backtrace.c
printk: rename cpulock functions
2022-04-22 21:30:57 +02:00
notifier-error-inject.c
lib/notifier-error-inject: fix error when writing -errno to debugfs file
2022-12-31 13:31:58 +01:00
notifier-error-inject.h
…
objagg.c
mlxsw: spectrum_acl_erp: Fix object nesting warning
2024-08-03 08:49:05 +02:00
of-reconfig-notifier-error-inject.c
…
oid_registry.c
…
once.c
once: rename _SLOW to _SLEEPABLE
2022-10-03 17:34:32 -07:00
overflow_kunit.c
overflow: Refactor test skips for Clang-specific issues
2022-10-25 14:57:42 -07:00
packing.c
…
parman.c
…
parser.c
…
pci_iomap.c
pci_iounmap(): Fix MMIO mapping leak
2024-04-03 15:19:25 +02:00
percpu_counter.c
…
percpu_test.c
…
percpu-refcount.c
percpu_ref_init(): clean ->percpu_count_ref on failure
2022-05-18 02:20:17 -04:00
plist.c
…
pm-notifier-error-inject.c
…
polynomial.c
lib: add generic polynomial calculation
2022-05-22 11:32:30 -07:00
radix-tree.c
radix tree: remove unused variable
2023-08-30 16:11:08 +02:00
random32.c
treewide: use get_random_bytes() when possible
2022-10-11 17:42:58 -06:00
ratelimit.c
ratelimit: Fix data-races in ___ratelimit().
2022-08-24 13:46:57 +01:00
rbtree_test.c
…
rbtree.c
…
ref_tracker.c
…
refcount.c
…
rhashtable.c
…
sbitmap.c
sbitmap: use READ_ONCE to access map->word
2024-08-03 08:49:29 +02:00
scatterlist.c
lib/scatterlist: use matched parameter type when calling __sg_free_table()
2022-07-17 17:31:39 -07:00
seq_buf.c
…
sg_pool.c
lib/sg_pool: change module_init(sg_pool_init) to subsys_initcall
2022-09-23 16:46:19 +02:00
sg_split.c
…
show_mem.c
mm: reduce noise in show_mem for lowmem allocations
2022-09-26 19:46:29 -07:00
siphash.c
Merge tag 'spdx-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx
2022-06-03 10:34:34 -07:00
slub_kunit.c
mm/slub, kunit: Use inverted data to corrupt kmem cache
2024-06-12 11:03:04 +02:00
smp_processor_id.c
lib/smp_processor_id: fix imbalanced instrumentation_end() call
2022-07-17 17:31:41 -07:00
sort.c
lib/sort: Add priv pointer to swap function
2022-03-17 20:17:18 -07:00
stackdepot.c
stackdepot: respect __GFP_NOLOCKDEP allocation flag
2024-05-02 16:29:29 +02:00
stackinit_kunit.c
lib: stackinit: update reference to kunit-tool
2022-09-30 13:21:22 -06:00
stmp_device.c
…
string_helpers.c
lib/string_helpers: Introduce parse_int_array_user()
2022-09-05 14:51:46 +01:00
string.c
kmsan: disable strscpy() optimization under KMSAN
2022-10-03 14:03:22 -07:00
strncpy_from_user.c
lib/strn*,objtool: Enforce user_access_begin() rules
2022-04-19 21:58:47 +02:00
strnlen_user.c
lib/strn*,objtool: Enforce user_access_begin() rules
2022-04-19 21:58:47 +02:00
syscall.c
…
test_bitmap.c
lib/bitmap: workaround const_eval test build failure
2023-08-11 12:08:10 +02:00
test_bitops.c
…
test_bits.c
…
test_blackhole_dev.c
net: blackhole_dev: fix build warning for ethh set but not used
2024-03-26 18:20:33 -04:00
test_bpf.c
test_bpf: fix incorrect netdev features
2022-06-22 19:20:20 -07:00
test_debug_virtual.c
…
test_dynamic_debug.c
dyndbg: test DECLARE_DYNDBG_CLASSMAP, sysfs nodes
2022-09-07 17:04:49 +02:00
test_firmware.c
test_firmware: return ENOMEM instead of ENOSPC on failed memory allocation
2023-08-03 10:24:19 +02:00
test_fprobe.c
fprobe: Pass entry_data to handlers
2023-10-25 12:03:12 +02:00
test_fpu.c
…
test_free_pages.c
lib/test_free_pages.c: pass a pointer to virt_to_page()
2022-07-17 17:14:36 -07:00
test_hash.c
…
test_hexdump.c
treewide: use prandom_u32_max() when possible, part 1
2022-10-11 17:42:55 -06:00
test_hmm_uapi.h
hmm-tests: add test for migrate_device_range()
2022-10-12 18:51:50 -07:00
test_hmm.c
lib/test_hmm.c: handle src_pfns and dst_pfns allocation failure
2024-06-12 11:03:29 +02:00
test_ida.c
ida: Fix crash in ida_free when the bitmap is empty
2024-01-20 11:50:09 +01:00
test_kmod.c
lib/test: use after free in register_test_dev_kmod()
2022-03-29 15:13:36 -07:00
test_kprobes.c
treewide: use get_random_u32() when possible
2022-10-11 17:42:58 -06:00
test_linear_ranges.c
…
test_list_sort.c
treewide: use prandom_u32_max() when possible, part 1
2022-10-11 17:42:55 -06:00
test_lockup.c
…
test_maple_tree.c
maple_tree: add GFP_KERNEL to allocations in mas_expected_entries()
2023-11-02 09:35:24 +01:00
test_memcat_p.c
…
test_meminit.c
lib/test_meminit: fix off-by-one error in test_pages()
2023-10-15 18:32:41 +02:00
test_min_heap.c
treewide: use get_random_u32() when possible
2022-10-11 17:42:58 -06:00
test_module.c
…
test_objagg.c
treewide: use get_random_bytes() when possible
2022-10-11 17:42:58 -06:00
test_parman.c
…
test_printf.c
lib/test_printf.c: fix clang -Wformat warnings
2022-07-28 10:38:30 +02:00
test_ref_tracker.c
…
test_rhashtable.c
rhashtable: make test actually random
2022-10-26 13:39:09 +01:00
test_scanf.c
lib: test_scanf: Add explicit type cast to result initialization in test_number_prefix()
2023-09-19 12:28:05 +02:00
test_siphash.c
siphash: add SPDX tags as sole licensing authority
2022-05-19 18:54:22 +02:00
test_sort.c
…
test_static_key_base.c
…
test_static_keys.c
…
test_string.c
lib/test_string.c: add strspn and strcspn tests
2022-04-29 14:38:00 -07:00
test_strscpy.c
…
test_sysctl.c
selftests/sysctl: add sysctl macro test
2022-05-03 10:15:07 +02:00
test_ubsan.c
…
test_user_copy.c
…
test_uuid.c
…
test_vmalloc.c
treewide: use get_random_{u8,u16}() when possible, part 2
2022-10-11 17:42:58 -06:00
test_xarray.c
XArray: Fix xas_create_range() when multi-order entry present
2022-03-28 19:25:11 -04:00
test-kstrtox.c
…
test-string_helpers.c
treewide: use prandom_u32_max() when possible, part 1
2022-10-11 17:42:55 -06:00
textsearch.c
…
timerqueue.c
…
trace_readwrite.c
lib: Add register read/write tracing support
2022-06-15 17:41:12 +02:00
ts_bm.c
lib/ts_bm: reset initial match offset for every block of text
2023-07-19 16:21:13 +02:00
ts_fsm.c
…
ts_kmp.c
…
ubsan.c
panic: Consolidate open-coded panic_on_warn checks
2023-01-24 07:24:41 +01:00
ubsan.h
…
ucmpdi2.c
…
ucs2_string.c
…
usercopy.c
uaccess: Add speculation barrier to copy_from_user()
2023-02-25 11:25:41 +01:00
uuid.c
treewide: use get_random_bytes() when possible
2022-10-11 17:42:58 -06:00
vsprintf.c
lib/vsprintf: Fix %pfwf when current node refcount == 0
2024-01-01 12:39:07 +00:00
win_minmax.c
…
xarray.c
XArray: Do not return sibling entries from xa_load()
2023-09-13 09:43:00 +02:00
xxhash.c
…