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linux/crypto
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Lu Jialin e134f3aba9 crypto: pcrypt - Fix hungtask for PADATA_RESET 
[ Upstream commit 8f4f68e788 ]

We found a hungtask bug in test_aead_vec_cfg as follows:

INFO: task cryptomgr_test:391009 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Call trace:
 __switch_to+0x98/0xe0
 __schedule+0x6c4/0xf40
 schedule+0xd8/0x1b4
 schedule_timeout+0x474/0x560
 wait_for_common+0x368/0x4e0
 wait_for_completion+0x20/0x30
 wait_for_completion+0x20/0x30
 test_aead_vec_cfg+0xab4/0xd50
 test_aead+0x144/0x1f0
 alg_test_aead+0xd8/0x1e0
 alg_test+0x634/0x890
 cryptomgr_test+0x40/0x70
 kthread+0x1e0/0x220
 ret_from_fork+0x10/0x18
 Kernel panic - not syncing: hung_task: blocked tasks

For padata_do_parallel, when the return err is 0 or -EBUSY, it will call
wait_for_completion(&wait->completion) in test_aead_vec_cfg. In normal
case, aead_request_complete() will be called in pcrypt_aead_serial and the
return err is 0 for padata_do_parallel. But, when pinst->flags is
PADATA_RESET, the return err is -EBUSY for padata_do_parallel, and it
won't call aead_request_complete(). Therefore, test_aead_vec_cfg will
hung at wait_for_completion(&wait->completion), which will cause
hungtask.

The problem comes as following:
(padata_do_parallel)                 |
    rcu_read_lock_bh();              |
    err = -EINVAL;                   |   (padata_replace)
                                     |     pinst->flags |= PADATA_RESET;
    err = -EBUSY                     |
    if (pinst->flags & PADATA_RESET) |
        rcu_read_unlock_bh()         |
        return err

In order to resolve the problem, we replace the return err -EBUSY with
-EAGAIN, which means parallel_data is changing, and the caller should call
it again.

v3:
remove retry and just change the return err.
v2:
introduce padata_try_do_parallel() in pcrypt_aead_encrypt and
pcrypt_aead_decrypt to solve the hungtask.

Signed-off-by: Lu Jialin <lujialin4@huawei.com>
Signed-off-by: Guo Zihua <guozihua@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:14:46 +00:00
..
asymmetric_keys certs: Break circular dependency when selftest is modular 2023-11-20 11:57:11 +01:00
async_tx async_tx: fix kernel-doc notation warnings 2023-03-24 18:22:28 +08:00
842.c
acompress.c crypto: api - Fix CRYPTO_USER checks for report function 2023-05-02 18:22:24 +08:00
adiantum.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
aead.c crypto: api - Fix CRYPTO_USER checks for report function 2023-05-02 18:22:24 +08:00
aegis128-core.c crypto: aegis128 - Move simd prototypes into aegis.h 2021-03-19 21:59:45 +11:00
aegis128-neon-inner.c crypto: aegis128-neon - add header for internal prototypes 2023-05-24 18:12:33 +08:00
aegis128-neon.c crypto: aegis128-neon - add header for internal prototypes 2023-05-24 18:12:33 +08:00
aegis-neon.h crypto: aegis128-neon - add header for internal prototypes 2023-05-24 18:12:33 +08:00
aegis.h crypto: aegis128 - Move simd prototypes into aegis.h 2021-03-19 21:59:45 +11:00
aes_generic.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
aes_ti.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
af_alg.c crypto: af_alg - Decrement struct key.usage in alg_set_by_key_serial() 2023-09-13 09:53:55 +02:00
ahash.c crypto: hash - Make crypto_ahash_alg helper available 2023-05-12 18:48:01 +08:00
akcipher.c crypto: akcipher - Do not copy dst if it is NULL 2023-06-27 17:59:52 +08:00
algapi.c crypto: api - Use work queue in crypto_destroy_instance 2023-09-13 09:53:05 +02:00
algboss.c crypto: algboss - compile out test-related code when tests disabled 2022-11-25 17:39:18 +08:00
algif_aead.c sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
algif_hash.c crypto: algif_hash - Fix race between MORE and non-MORE sends 2023-07-08 22:48:42 +10:00
algif_rng.c sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
algif_skcipher.c sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
ansi_cprng.c crypto: remove cipher routines from public crypto API 2021-01-03 08:41:35 +11:00
anubis.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
api.c crypto: api - Add __crypto_alloc_tfmgfp 2023-06-23 16:15:36 +08:00
arc4.c crypto: arc4 - mark ecb(arc4) skcipher as obsolete 2020-09-11 14:39:16 +10:00
aria_generic.c crypto: x86/aria - do not use magic number offsets of aria_ctx 2023-01-06 17:15:47 +08:00
authenc.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
authencesn.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
blake2b_generic.c crypto: blake2b - update file comment 2021-01-03 08:41:39 +11:00
blowfish_common.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
blowfish_generic.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
camellia_generic.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
cast5_generic.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
cast6_generic.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
cast_common.c
cbc.c crypto: remove cipher routines from public crypto API 2021-01-03 08:41:35 +11:00
ccm.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
cfb.c crypto: cleanup comments 2022-03-03 10:49:20 +12:00
chacha20poly1305.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
chacha_generic.c crypto: chacha_generic - remove unnecessary setkey() functions 2019-11-22 18:48:39 +08:00
cipher.c crypto: cipher - On clone do crypto_mod_get() 2023-06-23 16:15:36 +08:00
cmac.c crypto: cmac - Add support for cloning 2023-05-24 18:12:33 +08:00
compress.c crypto: compress - remove crt_u.compress (struct compress_tfm) 2019-12-11 16:37:01 +08:00
compress.h crypto: acomp - Count error stats differently 2023-03-14 17:06:42 +08:00
crc32_generic.c crypto: crc32-generic - Use SPDX-License-Identifier 2021-04-16 21:24:27 +10:00
crc32c_generic.c crypto: crc32c_generic - delete and fix duplicated words 2020-08-21 14:45:25 +10:00
crc64_rocksoft_generic.c crypto: add rocksoft 64b crc guard tag framework 2022-03-07 12:48:35 -07:00
crct10dif_common.c
crct10dif_generic.c crypto: crct10dif_generic - fix duplicated words 2020-08-21 14:45:25 +10:00
cryptd.c crypto: cryptd - Add support for cloning hashes 2023-04-20 18:20:04 +08:00
crypto_engine.c crypto: engine - fix crypto_queue backlog handling 2023-04-28 17:50:43 +08:00
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: rng - Count error stats differently 2023-03-14 17:06:42 +08:00
ctr.c crypto: remove cipher routines from public crypto API 2021-01-03 08:41:35 +11:00
cts.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
curve25519-generic.c crypto: add __init/__exit annotations to init/exit funcs 2022-09-24 16:14:43 +08:00
deflate.c mm, treewide: rename kzfree() to kfree_sensitive() 2020-08-07 11:33:22 -07:00
des_generic.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
dh_helper.c crypto: dh - split out deserialization code from crypto_dh_decode() 2022-03-03 10:47:50 +12:00
dh.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
drbg.c crypto: drbg - Only fail when jent is unavailable in FIPS mode 2023-04-06 16:18:53 +08:00
ecb.c crypto: remove cipher routines from public crypto API 2021-01-03 08:41:35 +11:00
ecc_curve_defs.h Merge branch 'ecc' 2021-03-26 19:55:55 +11:00
ecc.c crypto: ecc - Silence sparse warning 2023-02-14 13:39:33 +08:00
ecdh_helper.c crypto: ecdh - move curve_id of ECDH from the key to algorithm name 2021-03-13 00:04:03 +11:00
ecdh.c crypto: add __init/__exit annotations to init/exit funcs 2022-09-24 16:14:43 +08:00
ecdsa.c crypto: add __init/__exit annotations to init/exit funcs 2022-09-24 16:14:43 +08:00
ecdsasignature.asn1 crypto: ecdsa - Add support for ECDSA signature verification 2021-03-26 19:41:58 +11:00
echainiv.c crypto: geniv - remove unneeded arguments from aead_geniv_alloc() 2020-07-16 21:49:07 +10:00
ecrdsa_defs.h crypto: ecc - Move ecc.h to include/crypto/internal 2021-10-29 21:04:03 +08:00
ecrdsa_params.asn1
ecrdsa_pub_key.asn1
ecrdsa.c crypto: ecrdsa - Fix incorrect use of vli_cmp 2022-04-29 13:44:58 +08:00
essiv.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
fcrypt.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
fips.c crypto: fips - simplify one-level sysctl registration for crypto_sysctl_table 2023-03-17 11:16:44 +08:00
gcm.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
geniv.c crypto: algapi - use common mechanism for inheriting flags 2020-07-16 21:49:08 +10:00
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
hash.h crypto: hash - Add crypto_clone_ahash/shash 2023-04-20 18:20:04 +08:00
hctr2.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
hmac.c crypto: hmac - Add missing blank line 2023-06-16 20:30:35 +08:00
internal.h crypto: sig - Fix verify call 2023-06-27 15:40:24 +08:00
jitterentropy-kcapi.c crypto: jitter - add interface for gathering of raw entropy 2023-05-12 18:48:01 +08:00
jitterentropy-testing.c crypto: jitter - add interface for gathering of raw entropy 2023-05-12 18:48:01 +08:00
jitterentropy.c crypto: jitter - correct health test during initialization 2023-06-02 18:21:32 +08:00
jitterentropy.h crypto: jitter - add interface for gathering of raw entropy 2023-05-12 18:48:01 +08:00
Kconfig crypto: sig - Add interface for sign/verify 2023-06-23 16:15:36 +08:00
kdf_sp800108.c crypto: kdf - silence noisy self-test 2022-11-25 17:39:18 +08:00
keywrap.c crypto: keywrap - Remove else after break statement 2021-04-02 18:28:13 +11:00
khazad.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
kpp.c crypto: api - Fix CRYPTO_USER checks for report function 2023-05-02 18:22:24 +08:00
lrw.c crypto: lrw,xts - Replace strlcpy with strscpy 2023-09-23 11:14:19 +02:00
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: sig - Add interface for sign/verify 2023-06-23 16:15:36 +08:00
md4.c
md5.c crypto: md5 - remove unused macros 2020-02-28 08:43:21 +08:00
michael_mic.c crypto: michael_mic - fix broken misalignment handling 2021-02-10 17:55:55 +11:00
nhpoly1305.c crypto: poly1305 - add new 32 and 64-bit generic versions 2020-01-16 15:18:12 +08:00
ofb.c crypto: remove cipher routines from public crypto API 2021-01-03 08:41:35 +11:00
pcbc.c crypto: remove cipher routines from public crypto API 2021-01-03 08:41:35 +11:00
pcrypt.c crypto: pcrypt - Fix hungtask for PADATA_RESET 2023-11-28 17:14:46 +00:00
poly1305_generic.c crypto: poly1305 - add new 32 and 64-bit generic versions 2020-01-16 15:18:12 +08:00
polyval-generic.c crypto: x86/polyval - Add PCLMULQDQ accelerated implementation of POLYVAL 2022-06-10 16:40:17 +08:00
proc.c crypto: proc - Print fips status 2023-02-14 13:39:33 +08:00
ripemd.h crypto: rmd320 - remove RIPE-MD 320 hash algorithm 2021-01-29 16:07:04 +11:00
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
rng.c crypto: api - Fix CRYPTO_USER checks for report function 2023-05-02 18:22:24 +08:00
rsa_helper.c
rsa-pkcs1pad.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
rsa.c crypto: rsa - allow only odd e and restrict value in FIPS mode 2023-06-23 16:15:36 +08:00
rsaprivkey.asn1
rsapubkey.asn1
scatterwalk.c
scompress.c crypto: api - Fix CRYPTO_USER checks for report function 2023-05-02 18:22:24 +08:00
seed.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
seqiv.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
serpent_generic.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
sha1_generic.c crypto: sha - split sha.h into sha1.h and sha2.h 2020-11-20 14:45:33 +11:00
sha3_generic.c crypto: Replace HTTP links with HTTPS ones 2020-07-23 17:34:20 +10:00
sha256_generic.c crypto: sha256 - remove duplicate generic hash init function 2021-12-31 18:10:54 +11:00
sha512_generic.c crypto: sha512 - remove imaginary and mystifying clearing of variables 2021-08-27 16:30:19 +08:00
shash.c crypto: shash - Allow cloning on algorithms with no init_tfm 2023-05-24 18:12:33 +08:00
sig.c crypto: sig - Fix verify call 2023-06-27 15:40:24 +08:00
simd.c crypto: algapi - use common mechanism for inheriting flags 2020-07-16 21:49:08 +10:00
skcipher.c crypto: api - Fix CRYPTO_USER checks for report function 2023-05-02 18:22:24 +08:00
sm2.c crypto: sm2 - Fix crash caused by uninitialized context 2023-10-06 13:16:21 +02:00
sm2signature.asn1 crypto: sm2 - introduce OSCCA SM2 asymmetric cipher algorithm 2020-09-25 17:48:54 +10:00
sm3_generic.c crypto: sm3 - make dependent on sm3 library 2022-01-28 16:51:11 +11:00
sm3.c crypto: sm3,sm4 - move into crypto directory 2022-04-08 16:11:48 +08:00
sm4_generic.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
sm4.c crypto: sm4 - export sm4 constant arrays 2022-04-08 16:12:46 +08:00
streebog_generic.c crypto: streebog - remove two unused variables 2019-08-15 21:52:14 +10:00
tcrypt.c crypto: api - Move low-level functions into algapi.h 2023-04-14 18:59:34 +08:00
tcrypt.h crypto: tcrypt - include larger key sizes in RFC4106 benchmark 2023-01-20 18:29:31 +08:00
tea.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
testmgr.c crypto: testmgr - Add some test vectors for cmac(camellia) 2023-04-20 18:20:04 +08:00
testmgr.h crypto: testmgr - Add some test vectors for cmac(camellia) 2023-04-20 18:20:04 +08:00
twofish_common.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
twofish_generic.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
vmac.c crypto: remove cipher routines from public crypto API 2021-01-03 08:41:35 +11:00
wp512.c crypto: wp512 - disable kmsan checks in wp512_process_buffer() 2022-12-30 22:56:27 +08:00
xcbc.c crypto: remove cipher routines from public crypto API 2021-01-03 08:41:35 +11:00
xctr.c crypto: xctr - Add XCTR support 2022-06-10 16:40:16 +08:00
xor.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2021-02-21 17:23:56 -08:00
xts.c crypto: lrw,xts - Replace strlcpy with strscpy 2023-09-23 11:14:19 +02:00
xxhash_generic.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
zstd.c lib: zstd: Add kernel-specific API 2021-11-08 16:55:21 -08:00