[LTP] [PATCH ltp] testcases/kernel/crypto/crypto_user02.c: try non-generic hmac names first

[LTP] [PATCH ltp] testcases/kernel/crypto/crypto_user02.c: try non-generic hmac names first

[Frank Ranner]

Probe plain hmac(<hash>) driver names before the legacy *-generic
variants when selecting a viable algorithm for crypto_user02.

Newer kernels commonly expose non-generic algorithm names while
no longer registering the *-generic aliases, which made the current
candidate list fall through to TCONF even when usable algorithms
were present.

Keeping both forms preserves compatibility with older kernels while
avoiding kernel-version checks in the testcase logic.

Signed-off-by: Frank Ranner <frank.ranner@intel.com>
---
 testcases/kernel/crypto/crypto_user02.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/testcases/kernel/crypto/crypto_user02.c b/testcases/kernel/crypto/crypto_user02.c
index 88ae800aa..c08d35c84 100644
--- a/testcases/kernel/crypto/crypto_user02.c
+++ b/testcases/kernel/crypto/crypto_user02.c
@@ -35,6 +35,20 @@
  * The first algorithm, that fullfils the criteria is used for the test.
  */
 static const char * const ALGORITHM_CANDIDATES[] = {
+	"hmac(sha1)",
+	"hmac(sha224)",
+	"hmac(sha256)",
+	"hmac(sha384)",
+	"hmac(md5)",
+	"hmac(sm3)",
+	"hmac(sha512)",
+	"hmac(rmd160)",
+	"hmac(sha3-224)",
+	"hmac(sha3-256)",
+	"hmac(sha3-384)",
+	"hmac(sha3-512)",
+	"hmac(streebog256)",
+	"hmac(streebog512)",
 	"hmac(sha1-generic)",
 	"hmac(sha224-generic)",
 	"hmac(sha256-generic)",
-- 
2.53.0

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Re: [LTP] testcases/kernel/crypto/crypto_user02.c: try non-generic hmac names first

[linuxtestproject.agent]

Hi Frank,

On Wed, 12 Aug 2026, Frank Ranner wrote:
> testcases/kernel/crypto/crypto_user02.c: try non-generic hmac names first

> +	"hmac(sha1)",
> +	"hmac(sha224)",
> +	"hmac(sha256)",
> +	"hmac(sha384)",
> +	"hmac(md5)",
> +	"hmac(sm3)",
> +	"hmac(sha512)",
> +	"hmac(rmd160)",
> +	"hmac(sha3-224)",
> +	"hmac(sha3-256)",
> +	"hmac(sha3-384)",
> +	"hmac(sha3-512)",
> +	"hmac(streebog256)",
> +	"hmac(streebog512)",

[Major] Could these be replaced with actual deletable instance driver names?
The strings are copied into cru_driver_name, but these new values are
algorithm names.

On Linux 7.2, CRYPTO_MSG_NEWALG first misses the exact driver-name lookup
for "hmac(sha256)", then finds the non-instance "hmac-sha256-lib" driver by
its cra_name and returns success. CRYPTO_MSG_DELALG subsequently requires an
exact driver-name match, cannot find "hmac(sha256)", and returns ENOENT.

Consequently, the setup loop rejects every newly added candidate and still
reaches TCONF when the legacy *-generic instances are absent. The 7.2 HMAC
shash template instead produces deletable hmac-shash(<driver>) instance
names.

Verdict - Needs revision

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Note:

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Regards,
LTP AI Reviewer

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