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Kirill Tkhai 367733db7a crypto: xor - Fix divide error in do_xor_speed() 
commit 3c02e04fd4f57130e4fa75fab6f528f7a52db9b5 upstream.

crypto: Fix divide error in do_xor_speed()

From: Kirill Tkhai <ktkhai@virtuozzo.com>

Latest (but not only latest) linux-next panics with divide
error on my QEMU setup.

The patch at the bottom of this message fixes the problem.

xor: measuring software checksum speed
divide error: 0000 [#1] PREEMPT SMP KASAN
PREEMPT SMP KASAN
CPU: 3 PID: 1 Comm: swapper/0 Not tainted 5.10.0-next-20201223+ #2177
RIP: 0010:do_xor_speed+0xbb/0xf3
Code: 41 ff cc 75 b5 bf 01 00 00 00 e8 3d 23 8b fe 65 8b 05 f6 49 83 7d 85 c0 75 05 e8
 84 70 81 fe b8 00 00 50 c3 31 d2 48 8d 7b 10 <f7> f5 41 89 c4 e8 58 07 a2 fe 44 89 63 10 48 8d 7b 08
 e8 cb 07 a2
RSP: 0000:ffff888100137dc8 EFLAGS: 00010246
RAX: 00000000c3500000 RBX: ffffffff823f0160 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000808 RDI: ffffffff823f0170
RBP: 0000000000000000 R08: ffffffff8109c50f R09: ffffffff824bb6f7
R10: fffffbfff04976de R11: 0000000000000001 R12: 0000000000000000
R13: ffff888101997000 R14: ffff888101994000 R15: ffffffff823f0178
FS:  0000000000000000(0000) GS:ffff8881f7780000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000220e000 CR4: 00000000000006a0
Call Trace:
 calibrate_xor_blocks+0x13c/0x1c4
 ? do_xor_speed+0xf3/0xf3
 do_one_initcall+0xc1/0x1b7
 ? start_kernel+0x373/0x373
 ? unpoison_range+0x3a/0x60
 kernel_init_freeable+0x1dd/0x238
 ? rest_init+0xc6/0xc6
 kernel_init+0x8/0x10a
 ret_from_fork+0x1f/0x30
---[ end trace 5bd3c1d0b77772da ]---

Fixes: c055e3eae0f1 ("crypto: xor - use ktime for template benchmarking")
Cc: <stable@vger.kernel.org>
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-27 11:54:52 +01:00
..
asymmetric_keys
X.509: Fix crash caused by NULL pointer
2021-01-23 16:03:58 +01:00
async_tx
md/raid6: let async recovery function support different page offset
2020-09-24 16:44:44 -07:00
842.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
acompress.c
crypto: api - permit users to specify numa node of acomp hardware
2020-07-09 18:25:23 +10:00
adiantum.c
mm, treewide: rename kzfree() to kfree_sensitive()
2020-08-07 11:33:22 -07:00
aead.c
crypto: algapi - enforce that all instances have a ->free() method
2020-01-09 11:30:58 +08:00
aegis128-core.c
crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN
2020-01-09 11:30:53 +08:00
aegis128-neon-inner.c
crypto: aegis128 - duplicate init() and final() hooks in SIMD code
2019-10-26 02:06:05 +11:00
aegis128-neon.c
crypto: aegis128 - duplicate init() and final() hooks in SIMD code
2019-10-26 02:06:05 +11:00
aegis.h
crypto: aegis128 - Fix -Wunused-const-variable warning
2019-08-30 18:05:30 +10:00
aes_generic.c
crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN
2020-01-09 11:30:53 +08:00
aes_ti.c
crypto: aes - create AES library based on the fixed time AES code
2019-07-26 14:55:33 +10:00
af_alg.c
crypto: af_alg - avoid undefined behavior accessing salg_name
2020-12-26 16:02:45 +01:00
ahash.c
crypto: ahash - Add init_tfm/exit_tfm
2020-08-28 16:58:28 +10:00
akcipher.c
crypto: algapi - enforce that all instances have a ->free() method
2020-01-09 11:30:58 +08:00
algapi.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
algboss.c
crypto: algboss - don't wait during notifier callback
2020-06-15 17:38:54 +10:00
algif_aead.c
crypto: algif_aead - Do not set MAY_BACKLOG on the async path
2020-08-21 14:45:27 +10:00
algif_hash.c
net: make ->{get,set}sockopt in proto_ops optional
2020-07-19 18:16:41 -07:00
algif_rng.c
crypto: af_alg - add extra parameters for DRBG interface
2020-09-25 17:48:52 +10:00
algif_skcipher.c
crypto: algif_skcipher - EBUSY on aio should be an error
2020-08-21 14:45:26 +10:00
ansi_cprng.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 42
2019-05-24 17:27:12 +02:00
anubis.c
crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN
2020-01-09 11:30:53 +08:00
api.c
mm, treewide: rename kzfree() to kfree_sensitive()
2020-08-07 11:33:22 -07:00
arc4.c
crypto: arc4 - mark ecb(arc4) skcipher as obsolete
2020-09-11 14:39:16 +10:00
authenc.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
authencesn.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
blake2b_generic.c
crypto: Replace HTTP links with HTTPS ones
2020-07-23 17:34:20 +10:00
blake2s_generic.c
crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN
2020-01-09 11:30:53 +08:00
blowfish_common.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
blowfish_generic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
camellia_generic.c
crypto: Replace HTTP links with HTTPS ones
2020-07-23 17:34:20 +10:00
cast5_generic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 140
2019-05-30 11:25:16 -07:00
cast6_generic.c
crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN
2020-01-09 11:30:53 +08:00
cast_common.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 44
2019-05-24 17:27:12 +02:00
cbc.c
crypto: cbc - Remove cbc.h
2020-09-11 14:39:16 +10:00
ccm.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
cfb.c
crypto: skcipher - Add skcipher_ialg_simple helper
2019-12-27 18:18:04 +08:00
chacha20poly1305.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
chacha_generic.c
crypto: chacha_generic - remove unnecessary setkey() functions
2019-11-22 18:48:39 +08:00
cipher.c
crypto: remove propagation of CRYPTO_TFM_RES_* flags
2020-01-09 11:30:53 +08:00
cmac.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
compress.c
crypto: compress - remove crt_u.compress (struct compress_tfm)
2019-12-11 16:37:01 +08:00
crc32_generic.c
crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN
2020-01-09 11:30:53 +08:00
crc32c_generic.c
crypto: crc32c_generic - delete and fix duplicated words
2020-08-21 14:45:25 +10:00
crct10dif_common.c
crypto: crct10dif - Add fallback for broken initrds
2013-09-12 15:31:34 +10:00
crct10dif_generic.c
crypto: crct10dif_generic - fix duplicated words
2020-08-21 14:45:25 +10:00
cryptd.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
crypto_engine.c
crypto: engine - delete duplicated word
2020-08-21 14:45:26 +10:00
crypto_null.c
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-07-08 20:57:08 -07:00
crypto_user_base.c
crypto: algapi - make unregistration functions return void
2019-12-20 14:58:35 +08:00
crypto_user_stat.c
crypto: skcipher - remove the "blkcipher" algorithm type
2019-11-01 13:38:32 +08:00
ctr.c
crypto: algapi - add NEED_FALLBACK to INHERITED_FLAGS
2020-07-16 21:49:08 +10:00
cts.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
curve25519-generic.c
crypto: curve25519 - implement generic KPP driver
2019-11-17 09:02:43 +08:00
deflate.c
mm, treewide: rename kzfree() to kfree_sensitive()
2020-08-07 11:33:22 -07:00
des_generic.c
crypto: remove CRYPTO_TFM_RES_WEAK_KEY
2020-01-09 11:30:53 +08:00
dh_helper.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
dh.c
crypto: dh - SP800-56A rev 3 local public key validation
2020-07-31 18:08:59 +10:00
drbg.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
ecb.c
crypto: skcipher - Add skcipher_ialg_simple helper
2019-12-27 18:18:04 +08:00
ecc_curve_defs.h
crypto: ecc - make ecc into separate module
2019-04-18 22:15:02 +08:00
ecc.c
mm, treewide: rename kzfree() to kfree_sensitive()
2020-08-07 11:33:22 -07:00
ecc.h
crypto: ecc - SP800-56A rev 3 local public key validation
2020-07-31 18:08:59 +10:00
ecdh_helper.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ecdh.c
crypto: ecdh - avoid buffer overflow in ecdh_set_secret()
2021-01-12 20:18:17 +01:00
echainiv.c
crypto: geniv - remove unneeded arguments from aead_geniv_alloc()
2020-07-16 21:49:07 +10:00
ecrdsa_defs.h
crypto: ecrdsa - add EC-RDSA (GOST 34.10) algorithm
2019-04-18 22:15:02 +08:00
ecrdsa_params.asn1
crypto: ecrdsa - add EC-RDSA (GOST 34.10) algorithm
2019-04-18 22:15:02 +08:00
ecrdsa_pub_key.asn1
crypto: ecrdsa - add EC-RDSA (GOST 34.10) algorithm
2019-04-18 22:15:02 +08:00
ecrdsa.c
crypto: algapi - Remove skbuff.h inclusion
2020-08-20 14:04:28 +10:00
essiv.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
fcrypt.c
crypto: make all generic algorithms set cra_driver_name
2019-06-13 14:31:39 +08:00
fips.c
crypto: fips - add FIPS test failure notification chain
2019-07-26 14:51:57 +10:00
gcm.c
mm, treewide: rename kzfree() to kfree_sensitive()
2020-08-07 11:33:22 -07:00
geniv.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
gf128mul.c
mm, treewide: rename kzfree() to kfree_sensitive()
2020-08-07 11:33:22 -07:00
ghash-generic.c
crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN
2020-01-09 11:30:53 +08:00
hash_info.c
crypto: rename sm3-256 to sm3 in hash_algo_name
2020-02-18 07:35:49 -05:00
hmac.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
internal.h
crypto: algapi - Move crypto_yield into internal.h
2020-08-19 21:59:43 +10:00
jitterentropy-kcapi.c
crypto: algapi - Remove skbuff.h inclusion
2020-08-20 14:04:28 +10:00
jitterentropy.c
crypto: Replace HTTP links with HTTPS ones
2020-07-23 17:34:20 +10:00
jitterentropy.h
crypto: jitter - add header to fix buildwarnings
2019-10-18 18:49:40 +11:00
Kconfig
crypto: Kconfig - CRYPTO_MANAGER_EXTRA_TESTS requires the manager
2020-12-30 11:53:09 +01:00
keywrap.c
crypto: skcipher - Add skcipher_ialg_simple helper
2019-12-27 18:18:04 +08:00
khazad.c
crypto: make all generic algorithms set cra_driver_name
2019-06-13 14:31:39 +08:00
kpp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
lrw.c
crypto: Replace HTTP links with HTTPS ones
2020-07-23 17:34:20 +10:00
lz4.c
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-07-08 20:57:08 -07:00
lz4hc.c
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-07-08 20:57:08 -07:00
lzo-rle.c
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-07-08 20:57:08 -07:00
lzo.c
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-07-08 20:57:08 -07:00
Makefile
crypto: sm2 - introduce OSCCA SM2 asymmetric cipher algorithm
2020-09-25 17:48:54 +10:00
md4.c
crypto: make all generic algorithms set cra_driver_name
2019-06-13 14:31:39 +08:00
md5.c
crypto: md5 - remove unused macros
2020-02-28 08:43:21 +08:00
memneq.c
crypto: memneq - fix for archs without efficient unaligned access
2013-12-09 20:09:12 +08:00
michael_mic.c
crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN
2020-01-09 11:30:53 +08:00
nhpoly1305.c
crypto: poly1305 - add new 32 and 64-bit generic versions
2020-01-16 15:18:12 +08:00
ofb.c
crypto: skcipher - Add skcipher_ialg_simple helper
2019-12-27 18:18:04 +08:00
pcbc.c
crypto: skcipher - Add skcipher_ialg_simple helper
2019-12-27 18:18:04 +08:00
pcrypt.c
padata: fold padata_alloc_possible() into padata_alloc()
2020-07-23 17:34:18 +10:00
poly1305_generic.c
crypto: poly1305 - add new 32 and 64-bit generic versions
2020-01-16 15:18:12 +08:00
proc.c
crypto: proc - Removing some useless only space lines
2020-09-25 17:48:15 +10:00
ripemd.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
rmd128.c
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-07-08 20:57:08 -07:00
rmd160.c
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-07-08 20:57:08 -07:00
rmd256.c
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-07-08 20:57:08 -07:00
rmd320.c
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-07-08 20:57:08 -07:00
rng.c
mm, treewide: rename kzfree() to kfree_sensitive()
2020-08-07 11:33:22 -07:00
rsa_helper.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
rsa-pkcs1pad.c
crypto: algapi - Remove skbuff.h inclusion
2020-08-20 14:04:28 +10:00
rsa.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
rsaprivkey.asn1
crypto: rsa - Store rest of the private key components
2016-07-05 23:05:26 +08:00
rsapubkey.asn1
crypto: akcipher - Changes to asymmetric key API
2015-10-14 22:23:16 +08:00
salsa20_generic.c
crypto: Replace HTTP links with HTTPS ones
2020-07-23 17:34:20 +10:00
scatterwalk.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
scompress.c
crypto: algapi - make unregistration functions return void
2019-12-20 14:58:35 +08:00
seed.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
seqiv.c
mm, treewide: rename kzfree() to kfree_sensitive()
2020-08-07 11:33:22 -07:00
serpent_generic.c
crypto: x86 - Regularize glue function prototypes
2019-12-11 16:36:54 +08:00
sha1_generic.c
crypto: lib/sha1 - fold linux/cryptohash.h into crypto/sha.h
2020-05-08 15:32:17 +10:00
sha3_generic.c
crypto: Replace HTTP links with HTTPS ones
2020-07-23 17:34:20 +10:00
sha256_generic.c
crypto: lib/sha256 - return void
2020-05-08 15:32:12 +10:00
sha512_generic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 45
2019-05-24 17:27:12 +02:00
shash.c
mm, treewide: rename kzfree() to kfree_sensitive()
2020-08-07 11:33:22 -07:00
simd.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
skcipher.c
mm, treewide: rename kzfree() to kfree_sensitive()
2020-08-07 11:33:22 -07:00
sm2.c
crypto: sm2 - introduce OSCCA SM2 asymmetric cipher algorithm
2020-09-25 17:48:54 +10:00
sm2signature.asn1
crypto: sm2 - introduce OSCCA SM2 asymmetric cipher algorithm
2020-09-25 17:48:54 +10:00
sm3_generic.c
crypto: sm3 - export crypto_sm3_final function
2020-09-25 17:48:53 +10:00
sm4_generic.c
crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN
2020-01-09 11:30:53 +08:00
streebog_generic.c
crypto: streebog - remove two unused variables
2019-08-15 21:52:14 +10:00
tcrypt.c
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2020-10-13 08:50:16 -07:00
tcrypt.h
crypto: tcrypt - Add support for hash speed testing with keys
2020-08-21 14:45:27 +10:00
tea.c
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-07-08 20:57:08 -07:00
testmgr.c
crypto: sm2 - add SM2 test vectors to testmgr
2020-09-25 17:48:54 +10:00
testmgr.h
crypto: sm2 - add SM2 test vectors to testmgr
2020-09-25 17:48:54 +10:00
tgr192.c
crypto: tgr192 - remove unneeded semicolon
2019-11-15 13:44:17 +08:00
twofish_common.c
crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN
2020-01-09 11:30:53 +08:00
twofish_generic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
2019-05-21 11:28:45 +02:00
vmac.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
wp512.c
crypto: make all generic algorithms set cra_driver_name
2019-06-13 14:31:39 +08:00
xcbc.c
crypto: algapi - use common mechanism for inheriting flags
2020-07-16 21:49:08 +10:00
xor.c
crypto: xor - Fix divide error in do_xor_speed()
2021-01-27 11:54:52 +01:00
xts.c
crypto: xts - Replace memcpy() invocation with simple assignment
2020-07-31 18:09:00 +10:00
xxhash_generic.c
crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN
2020-01-09 11:30:53 +08:00
zstd.c
mm, treewide: rename kzfree() to kfree_sensitive()
2020-08-07 11:33:22 -07:00