AuxXxilium/linux_dsm_epyc7002
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2b7f47539b
linux_dsm_epyc7002/lib
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Linus Torvalds ab9bb6318b Partially revert "kfifo: fix kfifo_alloc() and kfifo_init()" 
Commit dfe2a77fd2 ("kfifo: fix kfifo_alloc() and kfifo_init()") made
the kfifo code round the number of elements up.  That was good for
__kfifo_alloc(), but it's actually wrong for __kfifo_init().

The difference? __kfifo_alloc() will allocate the rounded-up number of
elements, but __kfifo_init() uses an allocation done by the caller.  We
can't just say "use more elements than the caller allocated", and have
to round down.

The good news? All the normal cases will be using power-of-two arrays
anyway, and most users of kfifo's don't use kfifo_init() at all, but one
of the helper macros to declare a KFIFO that enforce the proper
power-of-two behavior.  But it looks like at least ibmvscsis might be
affected.

The bad news? Will Deacon refers to an old thread and points points out
that the memory ordering in kfifo's is questionable.  See

  https://lore.kernel.org/lkml/20181211034032.32338-1-yuleixzhang@tencent.com/

for more.

Fixes: dfe2a77fd2 ("kfifo: fix kfifo_alloc() and kfifo_init()")
Reported-by: laokz <laokz@foxmail.com>
Cc: Stefani Seibold <stefani@seibold.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Greg KH <greg@kroah.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-08-30 18:47:15 -07:00
..
842 lib: 842: no need to check return value of debugfs_create functions 2019-07-03 16:57:17 +02:00
crypto crypto: arc4 - refactor arc4 core code into separate library 2019-06-20 14:18:33 +08:00
dim lib/dim: Fix -Wunused-const-variable warnings 2019-07-25 11:34:39 -07:00
fonts fonts: Prefer a bigger font for high resolution screens 2019-06-20 10:11:24 +02:00
livepatch
lz4
lzo
math
mpi lib/mpi/longlong.h: fix building with 32-bit x86 2019-07-16 19:23:21 -07:00
raid6 lib/raid6: fix unnecessary rebuild of vpermxor*.c 2019-08-01 00:09:49 +09:00
reed_solomon rslib: Make some functions static 2019-07-02 08:41:37 +02:00
vdso lib/vdso/32: Provide legacy syscall fallbacks 2019-07-31 00:09:09 +02:00
xz
zlib_deflate
zlib_inflate
zstd
.gitignore
argv_split.c
ashldi3.c
ashrdi3.c
asn1_decoder.c
assoc_array.c
atomic64_test.c
atomic64.c
audit.c
bcd.c
bch.c
bitmap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
bitrev.c
bsearch.c
btree.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 431 2019-06-05 17:37:16 +02:00
bucket_locks.c
bug.c
build_OID_registry
bust_spinlocks.c
chacha.c
check_signature.c
checksum.c
clz_ctz.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
clz_tab.c
cmdline.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
cmpdi2.c
compat_audit.c
cpu_rmap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpumask.c
crc4.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
crc7.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
crc8.c
crc16.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
crc32.c
crc32defs.h
crc32test.c
crc64.c
crc-ccitt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
crc-itu-t.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
crc-t10dif.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
ctype.c
debug_info.c
debug_locks.c
debugobjects.c debugobjects: Move printk out of db->lock critical sections 2019-06-14 14:51:16 +02:00
dec_and_lock.c
decompress_bunzip2.c
decompress_inflate.c
decompress_unlz4.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
decompress.c
devres.c devres: allow const resource arguments 2019-07-05 11:12:07 +09:00
digsig.c Revert "Merge tag 'keys-acl-20190703' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs" 2019-07-10 18:43:43 -07:00
dump_stack.c
dynamic_debug.c lib: dynamic_debug: no need to check return value of debugfs_create functions 2019-06-18 13:47:24 +02:00
dynamic_queue_limits.c
earlycpio.c
error-inject.c
errseq.c
extable.c
fault-inject.c fault-inject: clean up debugfs file creation logic 2019-06-18 13:47:24 +02:00
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
find_bit.c
flex_proportions.c
gen_crc32table.c
gen_crc64table.c
genalloc.c dma-mapping updates for Linux 5.3 2019-07-12 15:13:55 -07:00
generic-radix-tree.c
glob.c
globtest.c
hexdump.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 501 2019-06-19 17:09:56 +02:00
hweight.c
idr.c
inflate.c
interval_tree_test.c
interval_tree.c
iomap_copy.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 504 2019-06-19 17:09:56 +02:00
iomap.c
iommu-helper.c
ioremap.c mm/ioremap: probe platform for p4d huge map support 2019-07-16 19:23:22 -07:00
iov_iter.c
irq_poll.c
irq_regs.c
is_single_threaded.c
kasprintf.c
Kconfig ARM: SoC-related driver updates 2019-07-19 17:13:56 -07:00
Kconfig.debug Kbuild updates for v5.3 (2nd) 2019-07-20 09:34:55 -07:00
Kconfig.kasan kasan: remove clang version check for KASAN_STACK 2019-08-03 07:02:00 -07:00
Kconfig.kgdb
Kconfig.ubsan
kfifo.c Partially revert "kfifo: fix kfifo_alloc() and kfifo_init()" 2019-08-30 18:47:15 -07:00
klist.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 248 2019-06-19 17:09:08 +02:00
kobject_uevent.c
kobject.c lib : kobject: fix refcount imblance on kobject_rename 2019-06-19 19:27:39 +02:00
kstrtox.c
kstrtox.h
libcrc32c.c
list_debug.c
list_sort.c lib: list_sort.c: add a blank line to avoid kernel-doc warnings 2019-06-20 14:07:34 -06:00
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 lockref: Limit number of cmpxchg loop retries 2019-06-07 13:15:06 -07:00
logic_pio.c lib: logic_pio: Add logic_pio_unregister_range() 2019-08-13 14:54:24 +08:00
lru_cache.c
lshrdi3.c
Makefile ubsan: build ubsan.c more conservatively 2019-08-03 07:02:00 -07:00
memcat_p.c
memory-notifier-error-inject.c
memweight.c
muldi3.c
net_utils.c
netdev-notifier-error-inject.c
nlattr.c
nmi_backtrace.c
nodemask.c
notifier-error-inject.c lib: notifier-error-inject: no need to check return value of debugfs_create functions 2019-07-03 16:57:18 +02:00
notifier-error-inject.h
objagg.c lib: objagg: Use struct_size() in kzalloc() 2019-06-05 19:03:39 -07:00
of-reconfig-notifier-error-inject.c
oid_registry.c
once.c
packing.c
parman.c
parser.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
pci_iomap.c
percpu_counter.c
percpu_test.c
percpu-refcount.c Merge branch 'for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu 2019-07-14 16:17:18 -07:00
plist.c
pm-notifier-error-inject.c
radix-tree.c
random32.c
ratelimit.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
rbtree_test.c
rbtree.c lib/rbtree: avoid generating code twice for the cached versions 2019-07-16 19:23:22 -07:00
refcount.c
rhashtable.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sbitmap.c sbitmap: Replace cmpxchg with xchg 2019-07-01 11:57:12 -06:00
scatterlist.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
seq_buf.c
sg_pool.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
sg_split.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
sha1.c
sha256.c
show_mem.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 435 2019-06-05 17:37:16 +02:00
siphash.c
smp_processor_id.c
sort.c
stackdepot.c
stmp_device.c
string_helpers.c lib/string_helpers: fix some kerneldoc warnings 2019-07-16 19:23:22 -07:00
string.c lib/string.c: allow searching for NUL with strnchr 2019-07-16 19:23:22 -07:00
strncpy_from_user.c
strnlen_user.c
syscall.c
test_bitfield.c
test_bitmap.c
test_blackhole_dev.c blackhole_dev: add a selftest 2019-07-01 19:34:46 -07:00
test_bpf.c
test_debug_virtual.c
test_firmware.c test_firmware: fix a memory leak bug 2019-07-25 14:39:52 +02:00
test_hash.c
test_hexdump.c
test_ida.c
test_kasan.c lib/test_kasan: Add test for double-kzfree detection 2019-07-12 11:05:42 -07:00
test_kmod.c
test_list_sort.c
test_memcat_p.c
test_meminit.c lib/test_meminit.c: use GFP_ATOMIC in RCU critical section 2019-08-03 07:02:01 -07:00
test_module.c
test_objagg.c
test_overflow.c lib/test_overflow.c: avoid tainting the kernel and fix wrap size 2019-07-16 19:23:22 -07:00
test_parman.c
test_printf.c
test_rhashtable.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
test_siphash.c
test_sort.c
test_stackinit.c
test_static_key_base.c
test_static_keys.c
test_string.c lib/test_string.c: add some testcases for strchr and strnchr 2019-07-16 19:23:22 -07:00
test_strscpy.c
test_sysctl.c
test_ubsan.c
test_user_copy.c
test_uuid.c
test_vmalloc.c
test_xarray.c
test-kstrtox.c
test-string_helpers.c
textsearch.c
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
ubsan.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ubsan.h
ucmpdi2.c
ucs2_string.c
usercopy.c
uuid.c
vsprintf.c Printk changes for 5.3 2019-07-09 12:25:58 -07:00
win_minmax.c
xarray.c
xxhash.c