Re: [PATCH v6 1/8] crypto: qce - Fix HMAC self-test failures for empty messages
Herbert Xu <[email protected]> Mon, 27 Jul 2026 09:08:31 +1000
| Newsgroups | org.kernel.vger.linux-crypto,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-kernel,org.kernel.vger.stable |
|---|---|
| Message-ID | <[email protected]> |
On Thu, Jul 23, 2026 at 12:25:14PM -0700, Eric Biggers wrote: > > I'm trying to understand how this is intended to work. This uses > crypto_tfm::fb. But this driver doesn't set CRYPTO_ALG_NEED_FALLBACK, > so crypto_tfm::fb is actually just a pointer to the same crypto_tfm. > (See crypto_create_tfm_node() and crypto_ahash_init_tfm().) Doesn't > this just result in an infinite recursive loop and a crash? Every async driver gets a fallback by default, unless you set the bit CRYPTO_ALG_NO_FALLBACK or you declare that you support CRYPTO_ALG_REQ_VIRT (which no driver does). Cheers, -- Email: Herbert Xu <[email protected]> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt