Mount encrypted ext4 disk

I was able to reproduce your issue on my Lime2 (problem is not reproducible on my FreedomBox amd64 VM):

root@freedombox:~# dd if=/dev/zero of=test-crypto-disk bs=1M count=10
10+0 records in   
10+0 records out  
10485760 bytes (10 MB, 10 MiB) copied, 0.0555911 s, 189 MB/s

root@freedombox:~# cryptsetup luksFormat test-crypto-disk

WARNING!
========
This will overwrite data on test-crypto-disk irrevocably.

Are you sure? (Type uppercase yes): YES
Enter passphrase for test-crypto-disk:
Verify passphrase:

device-mapper: reload ioctl on   failed: No such file or directory
Failed to setup dm-crypt key mapping for device test-crypto-disk.
Check that kernel supports aes-xts-plain64 cipher (check syslog for more info).
device-mapper: remove ioctl on temporary-cryptsetup-4461  failed: No such device or address                                                                                        
device-mapper: table ioctl on   failed: No such device or address
device-mapper: remove ioctl on temporary-cryptsetup-4461  failed: No such device or address                                                                                        
device-mapper: table ioctl on   failed: No such device or address
device-mapper: remove ioctl on temporary-cryptsetup-4461  failed: No such device or address                                                                                        
device-mapper: table ioctl on   failed: No such device or address
device-mapper: remove ioctl on temporary-cryptsetup-4461  failed: No such device or address                                                                                        
device-mapper: table ioctl on   failed: No such device or address
device-mapper: remove ioctl on temporary-cryptsetup-4461  failed: No such device or address  

On a Debian machine, the kernel configuration is available from /boot. Here is the output of cat /boot/config-4.19.0-4-armmp-lpae | grep CRYPTO on my FreedomBox.

# CONFIG_ARM_CRYPTO is not set
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
CONFIG_RT2X00_LIB_CRYPTO=y                                           
CONFIG_CRYPTO=y         
CONFIG_CRYPTO_ALGAPI=y        
CONFIG_CRYPTO_ALGAPI2=y                                     
CONFIG_CRYPTO_AEAD=m                                     
CONFIG_CRYPTO_AEAD2=y         
CONFIG_CRYPTO_BLKCIPHER=m
CONFIG_CRYPTO_BLKCIPHER2=y        
CONFIG_CRYPTO_HASH=y                                     
CONFIG_CRYPTO_HASH2=y  
CONFIG_CRYPTO_RNG=m                    
CONFIG_CRYPTO_RNG2=y                  
CONFIG_CRYPTO_RNG_DEFAULT=m
CONFIG_CRYPTO_AKCIPHER2=y
CONFIG_CRYPTO_AKCIPHER=y                                 
CONFIG_CRYPTO_KPP2=y                
CONFIG_CRYPTO_KPP=y                
CONFIG_CRYPTO_ACOMP2=y   
CONFIG_CRYPTO_RSA=y                                      
CONFIG_CRYPTO_DH=y                 
CONFIG_CRYPTO_ECDH=m                       
CONFIG_CRYPTO_MANAGER=y          
CONFIG_CRYPTO_MANAGER2=y    
CONFIG_CRYPTO_USER=m                                     
# CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set
CONFIG_CRYPTO_GF128MUL=m    
CONFIG_CRYPTO_NULL=m            
CONFIG_CRYPTO_NULL2=y                                    
CONFIG_CRYPTO_PCRYPT=m             
CONFIG_CRYPTO_WORKQUEUE=y              
# CONFIG_CRYPTO_CRYPTD is not set      
# CONFIG_CRYPTO_MCRYPTD is not set       
CONFIG_CRYPTO_AUTHENC=m              
CONFIG_CRYPTO_TEST=m                                              
CONFIG_CRYPTO_ENGINE=m                   
CONFIG_CRYPTO_CCM=m                         
CONFIG_CRYPTO_GCM=m                    
CONFIG_CRYPTO_CHACHA20POLY1305=m
CONFIG_CRYPTO_AEGIS128=m                    
CONFIG_CRYPTO_AEGIS128L=m              
CONFIG_CRYPTO_AEGIS256=m   
CONFIG_CRYPTO_MORUS640=m   
CONFIG_CRYPTO_MORUS1280=m                                            
CONFIG_CRYPTO_SEQIV=m                                                     
CONFIG_CRYPTO_ECHAINIV=m      
CONFIG_CRYPTO_CBC=m                   
# CONFIG_CRYPTO_CFB is not set                                       
CONFIG_CRYPTO_CTR=m     
CONFIG_CRYPTO_CTS=m           
CONFIG_CRYPTO_ECB=m                                         
CONFIG_CRYPTO_LRW=m                                      
CONFIG_CRYPTO_PCBC=m          
CONFIG_CRYPTO_XTS=m      
# CONFIG_CRYPTO_KEYWRAP is not set
CONFIG_CRYPTO_CMAC=m                                     
CONFIG_CRYPTO_HMAC=y   
CONFIG_CRYPTO_XCBC=m                   
CONFIG_CRYPTO_VMAC=m                  
CONFIG_CRYPTO_CRC32C=m     
CONFIG_CRYPTO_CRC32=m    
CONFIG_CRYPTO_CRCT10DIF=y                                
CONFIG_CRYPTO_GHASH=m               
CONFIG_CRYPTO_POLY1305=m           
CONFIG_CRYPTO_MD4=m      
CONFIG_CRYPTO_MD5=y                                      
CONFIG_CRYPTO_MICHAEL_MIC=m        
CONFIG_CRYPTO_RMD128=m                     
CONFIG_CRYPTO_RMD160=m           
CONFIG_CRYPTO_RMD256=m      
CONFIG_CRYPTO_RMD320=m                                   
CONFIG_CRYPTO_SHA1=y                            
CONFIG_CRYPTO_SHA256=y      
CONFIG_CRYPTO_SHA512=m          
CONFIG_CRYPTO_SHA3=m                                     
# CONFIG_CRYPTO_SM3 is not set     
CONFIG_CRYPTO_TGR192=m                 
CONFIG_CRYPTO_WP512=m                  
CONFIG_CRYPTO_AES=y                      
# CONFIG_CRYPTO_AES_TI is not set    
CONFIG_CRYPTO_ANUBIS=m                                            
CONFIG_CRYPTO_ARC4=m                     
CONFIG_CRYPTO_BLOWFISH=m                    
CONFIG_CRYPTO_BLOWFISH_COMMON=m        
CONFIG_CRYPTO_CAMELLIA=m        
CONFIG_CRYPTO_CAST_COMMON=m                 
CONFIG_CRYPTO_CAST5=m                  
CONFIG_CRYPTO_CAST6=m      
CONFIG_CRYPTO_DES=m        
CONFIG_CRYPTO_FCRYPT=m                                                
CONFIG_CRYPTO_KHAZAD=m                                                    
CONFIG_CRYPTO_SALSA20=m       
CONFIG_CRYPTO_CHACHA20=m              
CONFIG_CRYPTO_SEED=m                                                 
CONFIG_CRYPTO_SERPENT=m 
# CONFIG_CRYPTO_SM4 is not set
CONFIG_CRYPTO_TEA=m                                         
CONFIG_CRYPTO_TWOFISH=m                                  
CONFIG_CRYPTO_TWOFISH_COMMON=m
CONFIG_CRYPTO_DEFLATE=m  
CONFIG_CRYPTO_LZO=y               
# CONFIG_CRYPTO_842 is not set                           
CONFIG_CRYPTO_LZ4=m    
CONFIG_CRYPTO_LZ4HC=m                  
# CONFIG_CRYPTO_ZSTD is not set       
CONFIG_CRYPTO_ANSI_CPRNG=m 
CONFIG_CRYPTO_DRBG_MENU=m
CONFIG_CRYPTO_DRBG_HMAC=y                                
# CONFIG_CRYPTO_DRBG_HASH is not set
# CONFIG_CRYPTO_DRBG_CTR is not set
CONFIG_CRYPTO_DRBG=m     
CONFIG_CRYPTO_JITTERENTROPY=m                            
CONFIG_CRYPTO_USER_API=m           
CONFIG_CRYPTO_USER_API_HASH=m              
CONFIG_CRYPTO_USER_API_SKCIPHER=m
CONFIG_CRYPTO_USER_API_RNG=m
CONFIG_CRYPTO_USER_API_AEAD=m                            
CONFIG_CRYPTO_HASH_INFO=y                       
CONFIG_CRYPTO_HW=y          
CONFIG_CRYPTO_DEV_MARVELL_CESA=m
# CONFIG_CRYPTO_DEV_FSL_CAAM is not set                  
# CONFIG_CRYPTO_DEV_OMAP is not set
# CONFIG_CRYPTO_DEV_SAHARA is not set  
# CONFIG_CRYPTO_DEV_MXC_SCC is not set 
# CONFIG_CRYPTO_DEV_EXYNOS_RNG is not set
# CONFIG_CRYPTO_DEV_S5P is not set   
# CONFIG_CRYPTO_DEV_MXS_DCP is not set                            
CONFIG_CRYPTO_DEV_SUN4I_SS=m             
# CONFIG_CRYPTO_DEV_SUN4I_SS_PRNG is not set
# CONFIG_CRYPTO_DEV_ROCKCHIP is not set
CONFIG_CRYPTO_DEV_CHELSIO=m     
CONFIG_CRYPTO_DEV_VIRTIO=m                  
# CONFIG_CRYPTO_DEV_CCREE is not set   

This is starting to look like a bug in Debian’s configuration of the ARM kernel. If we find the missing configuration option we can file a bug report in Debian.