Thanks Eric. On Wed, Jul 05, 2023 at 01:12:05PM -0700, Eric Biggers wrote: > On Wed, Jul 05, 2023 at 05:40:07PM +0100, Giovanni Cabiddu wrote: > > The flag CRYPTO_ALG_ALLOCATES_MEMORY indicates that an algorithm might > > allocate memory in the datapath and therefore sleep. > > Dm-integrity is filtering out implementations of skcipher algorithms > > that have this flag set. However, in the same function it does > > allocations with GFP_KERNEL. > > Which function is the above referring to? The actual encryption/decryption > happens in crypt_journal(), and I don't see any memory allocations there. You are right. I was referring to create_journal() which is allocating memory right before calling do_crypt(). However, I didn't consider crypt_journal() which might not be allocating memory before calling do_crypt(). Then we are then back to square one. We need to check how many entries are present in the scatterlists encrypted by crypt_journal() before adjusting the meaning of !CRYPTO_ALG_ALLOCATES_MEMORY. Regards, -- Giovanni
