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| author | Harald Freudenberger <freude@linux.ibm.com> | 2026-08-31 10:38:37 +0200 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2026-09-08 15:53:41 +0200 |
| commit | 7a08507ea5b4d06ad8d269287913573f34467565 (patch) | |
| tree | b76ce2947c3dea734fe029d3a2d033e26749a43a | |
| parent | ac1481320110b803ab9b79ab4d2ca11a74fc05f2 (diff) | |
| download | linux-7a08507ea5b4d06ad8d269287913573f34467565.tar.gz linux-7a08507ea5b4d06ad8d269287913573f34467565.zip | |
s390/crypto: Map EBUSY to EIO when key conversion fails repeatedly
When hardware persistently returns -EBUSY after exhausting retries,
the error propagates to crypto_finalize_*_request(). The crypto API's
completion wrapper treats -EBUSY as a queueing status and swallows it,
preventing the completion callback from firing. This causes callers
using crypto_wait_req() to block indefinitely.
Translate persistent -EBUSY to -EIO after retry exhaustion to ensure
proper error propagation and callback invocation.
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 | 4 | ||||
| -rw-r--r-- | arch/s390/crypto/phmac_s390.c | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/s390/crypto/paes_s390.c b/arch/s390/crypto/paes_s390.c index a4b972459f52..f987bcbe8f35 100644 --- a/arch/s390/crypto/paes_s390.c +++ b/arch/s390/crypto/paes_s390.c @@ -220,6 +220,10 @@ static inline int convert_key(const u8 *key, unsigned int keylen, xflags); } + /* But finally map -EBUSY to -EIO to indicate an IO failure */ + if (rc == -EBUSY) + rc = -EIO; + out: pr_debug("rc=%d\n", rc); return rc; diff --git a/arch/s390/crypto/phmac_s390.c b/arch/s390/crypto/phmac_s390.c index 283a00754a06..bbf8a6809ecb 100644 --- a/arch/s390/crypto/phmac_s390.c +++ b/arch/s390/crypto/phmac_s390.c @@ -341,6 +341,10 @@ static inline int convert_key(const u8 *key, unsigned int keylen, xflags); } + /* But finally map -EBUSY to -EIO to indicate an IO failure */ + if (rc == -EBUSY) + rc = -EIO; + out: pr_debug("rc=%d\n", rc); return rc; |