Le 19/02/2018 à 09:30, Horia Geantă a écrit :
On 2/19/2018 9:58 AM, Christophe LEROY wrote:
Le 18/02/2018 à 18:14, Horia Geantă a écrit :
There is no ahash_exit() callback mirroring ahash_init().
The clean-up of request ctx should be done in the last states of the hash flows
for e.g. in the final() callback.
Unfortunatly it seems that we can't rely on those finalising functions
being called all the time.
If you look into test_ahash_jiffies() for instance, in case of error the
call of crypto_hash_final() is skipped.
If test_ahash_jiffies() errors before calling crypto_ahash_final(req), this
means a previous callback failed.
Accordingly, DMA unmapping should be performed also on the corresponding errors
paths in the driver.
And what about ALGIF path from user space ?
What if the user never calls the last sendmsg() which will call