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Defined in 2 files as a function:

Referenced in 2 files:

Smatch caller information:

drivers/virt/coco/sev-guest/sev-guest.c snp_guest_ioctl() -> get_derived_key()

Type Parameter Key Value
PARAM_VALUE 0 snp_dev 4096-ptr_max
PARAM_VALUE 1 arg 3634276090450407424
PARAM_VALUE 1 arg->exitinfo2 255
PARAM_VALUE 1 arg->msg_version 1-255
DATA_SOURCE 0 snp_dev r to_snp_dev
USER_DATA 1 arg->fw_error 0-u32max
USER_DATA 1 arg->msg_version 1-255
USER_DATA 1 arg->req_data 0-u64max
USER_DATA 1 arg->resp_data 0-u64max
USER_DATA 1 arg->vmm_error 0-u32max

security/keys/encrypted-keys/encrypted.c datablob_hmac_append() -> get_derived_key()

Type Parameter Key Value
PARAM_VALUE 0 snp_dev 6093768750801133568
PARAM_VALUE 1 arg 1
PARAM_VALUE 3 master_keylen 0-u32max
BUF_SIZE 0 snp_dev 32
DATA_SOURCE 2 master_key $1
DATA_SOURCE 3 master_keylen $2
LOCK2 &key->sem
TYPE_LOCK (struct key)->sem

security/keys/encrypted-keys/encrypted.c datablob_hmac_verify() -> get_derived_key()

Type Parameter Key Value
PARAM_VALUE 0 snp_dev 4955411994388361216
PARAM_VALUE 1 arg 1
PARAM_VALUE 3 master_keylen 0-u32max
BUF_SIZE 0 snp_dev 32
DATA_SOURCE 2 master_key $2
DATA_SOURCE 3 master_keylen $3
RX_PATH
TASK_NOT_RUNNING
LOCK2 global &key_construction_mutex
HALF_LOCKED2 &keyring->sem
HALF_LOCKED2 global &key_types_sem

security/keys/encrypted-keys/encrypted.c encrypted_key_decrypt() -> get_derived_key()

Type Parameter Key Value
PARAM_VALUE 0 snp_dev 3116628199414124544
PARAM_VALUE 1 arg 0
PARAM_VALUE 2 *master_key 0-255
PARAM_VALUE 3 master_keylen 0-u32max
BUF_SIZE 0 snp_dev 32
RX_PATH
TASK_NOT_RUNNING
LOCK2 global &key_construction_mutex
HALF_LOCKED2 &keyring->sem
HALF_LOCKED2 global &key_types_sem

security/keys/encrypted-keys/encrypted.c encrypted_read() -> get_derived_key()

Type Parameter Key Value
PARAM_VALUE 0 snp_dev 1903459002154860544
PARAM_VALUE 1 arg 0
PARAM_VALUE 2 *master_key 0-255
PARAM_VALUE 3 master_keylen 0-u32max
BUF_SIZE 0 snp_dev 32
LOCK2 &key->sem
TYPE_LOCK (struct key)->sem