On 11/11/20 2:48 PM, Eric Biggers wrote: > From: Eric Biggers <ebiggers@xxxxxxxxxx> > > If there is only one keyslot, then blk_ksm_init() computes > slot_hashtable_size=1 and log_slot_ht_size=0. This causes > blk_ksm_find_keyslot() to crash later because it uses > hash_ptr(key, log_slot_ht_size) to find the hash bucket containing the > key, and hash_ptr() doesn't support the bits == 0 case. > > Fix this by making the hash table always have at least 2 buckets. > > Tested by running: > > kvm-xfstests -c ext4 -g encrypt -m inlinecrypt \ > -o blk-crypto-fallback.num_keyslots=1 Applied for 5.10, thanks. -- Jens Axboe
