[gnutls-devel] GnuTLS | Apps using gnutls log error on kernel 5.12 if built with AF_ALG (#1246)

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Jan Palus created an issue: https://gitlab.com/gnutls/gnutls/-/issues/1246



Just took gnutls 3.7.2 with `--enable-afalg` for a spin and there seems to be a usability problem. Application started to log cryptic error:
```
libkcapi - Error: AF_ALG: bind failed (errno: -2)
```
Few remarks:
* error is harmless since it's about missing cipher in kernel, namely salsa20 which was dropped in kernel 5.12
* preferably error should be logged only with verbose mode, but unfortunately libkcapi does not seem to allow it
* even in verbose mode it would be good if error had some additional info ie that it's salsa20 cipher which failed initialization

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