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| author | Harald Freudenberger <freude@linux.ibm.com> | 2026-08-31 10:38:36 +0200 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2026-09-08 15:53:41 +0200 |
| commit | ac1481320110b803ab9b79ab4d2ca11a74fc05f2 (patch) | |
| tree | 165ef3a13ef6851ba6d40612f4d54c7273937a3e | |
| parent | 330148371401de474b656eaf521861f12ec1a1ce (diff) | |
| download | linux-ac1481320110b803ab9b79ab4d2ca11a74fc05f2.tar.gz linux-ac1481320110b803ab9b79ab4d2ca11a74fc05f2.zip | |
s390/crypto: Fix wrong return code to engine in asynch callbacks
When crypto_finalize_hash_request() or
crypto_finalize_skcipher_request() explicitly completes a request, the
do_one_request callback must return 0 to indicate successful
handling. Returning a negative error code causes the crypto engine to
assume the driver failed to take ownership and triggers a second
completion via crypto_request_complete(), resulting in a double
completion. This pattern occurs in paes_s390.c 4 times and once in
phmac_s390.c.
Fixed in phmac_do_one_request() and all four paes do_one_request
callbacks (ecb, cbc, ctr, xts) by returning 0 after explicit
finalization instead of propagating the error code.
Fixes: 6cd87cb5ef6c ("s390/crypto: Rework protected key AES for true asynch support")
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Cc: stable@vger.kernel.org # 6.16+
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
| -rw-r--r-- | arch/s390/crypto/paes_s390.c | 8 | ||||
| -rw-r--r-- | arch/s390/crypto/phmac_s390.c | 2 |
2 files changed, 5 insertions, 5 deletions
diff --git a/arch/s390/crypto/paes_s390.c b/arch/s390/crypto/paes_s390.c index 93e0e54ba2e8..a4b972459f52 100644 --- a/arch/s390/crypto/paes_s390.c +++ b/arch/s390/crypto/paes_s390.c @@ -565,7 +565,7 @@ static int ecb_paes_do_one_request(struct crypto_engine *engine, void *areq) atomic_dec(&ctx->via_engine_ctr); crypto_finalize_skcipher_request(engine, req, rc); local_bh_enable(); - return rc; + return 0; } static struct skcipher_engine_alg ecb_paes_alg = { @@ -828,7 +828,7 @@ static int cbc_paes_do_one_request(struct crypto_engine *engine, void *areq) atomic_dec(&ctx->via_engine_ctr); crypto_finalize_skcipher_request(engine, req, rc); local_bh_enable(); - return rc; + return 0; } static struct skcipher_engine_alg cbc_paes_alg = { @@ -1144,7 +1144,7 @@ static int ctr_paes_do_one_request(struct crypto_engine *engine, void *areq) atomic_dec(&ctx->via_engine_ctr); crypto_finalize_skcipher_request(engine, req, rc); local_bh_enable(); - return rc; + return 0; } static struct skcipher_engine_alg ctr_paes_alg = { @@ -1588,7 +1588,7 @@ static int xts_paes_do_one_request(struct crypto_engine *engine, void *areq) atomic_dec(&ctx->via_engine_ctr); crypto_finalize_skcipher_request(engine, req, rc); local_bh_enable(); - return rc; + return 0; } static struct skcipher_engine_alg xts_paes_alg = { diff --git a/arch/s390/crypto/phmac_s390.c b/arch/s390/crypto/phmac_s390.c index 532fe6c4e89c..283a00754a06 100644 --- a/arch/s390/crypto/phmac_s390.c +++ b/arch/s390/crypto/phmac_s390.c @@ -926,7 +926,7 @@ out: atomic_dec(&tfm_ctx->via_engine_ctr); crypto_finalize_hash_request(engine, req, rc); local_bh_enable(); - return rc; + return 0; } #define S390_ASYNC_PHMAC_ALG(x) \ |