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Documented in 1 files:

Defined in 1 files as a prototype:

Defined in 1 files as a function:

Referenced in 5 files:

Smatch caller information:

kernel/trace/trace_fprobe.c fetch_store_string_user() -> strncpy_from_user_nofault()

Type Parameter Key Value
PARAM_VALUE 0 dst 0-ptr_max
PARAM_VALUE 2 count 1-u16max
DATA_SOURCE 0 dst r get_loc_data
DATA_SOURCE 1 unsafe_addr $0
UNITS 1 unsafe_addr unit_byte
HALF_LOCKED2 rcu_read

kernel/trace/trace_events_filter.c test_ustring() -> strncpy_from_user_nofault()

Type Parameter Key Value
PARAM_VALUE 2 count 1024
BUF_SIZE 0 dst 1024
BUF_SIZE 0 dst 1024
DATA_SOURCE 1 unsafe_addr $0
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 global &event_mutex

kernel/trace/trace_events_synth.c fetch_store_string_user() -> strncpy_from_user_nofault()

Type Parameter Key Value
PARAM_VALUE 1 unsafe_addr 0-18446744073709551614
PARAM_VALUE 2 count 1-u16max
DATA_SOURCE 0 dst r get_loc_data
DATA_SOURCE 1 unsafe_addr $0
STR_LEN 0 dst (-1),10
STR_LEN 1 unsafe_addr (-1),10
PREEMPT_ADD

kernel/trace/trace_events_synth.c trace_string() -> strncpy_from_user_nofault()

Type Parameter Key Value
PARAM_VALUE 1 unsafe_addr 0-18446744073709551614
PARAM_VALUE 2 count 256
BUF_SIZE 0 dst 8
BUF_SIZE 0 dst 8
CAPPED_DATA 1 unsafe_addr 1
DATA_SOURCE 1 unsafe_addr $2
STR_LEN 0 dst (-1),10
STR_LEN 1 unsafe_addr (-1),10
PREEMPT_ADD

kernel/trace/bpf_trace.c bpf_probe_read_user_str_common() -> strncpy_from_user_nofault()

Type Parameter Key Value
DATA_SOURCE 0 dst $0
DATA_SOURCE 1 unsafe_addr $2
DATA_SOURCE 2 count $1

kernel/trace/bpf_trace.c copy_user_str_nofault() -> strncpy_from_user_nofault()

Type Parameter Key Value
PARAM_VALUE 0 dst 1-u64max
BUF_SIZE 0 dst (-1),256
DATA_SOURCE 0 dst $0
DATA_SOURCE 1 unsafe_addr $1
DATA_SOURCE 2 count $2
UNITS 2 count unit_byte

kernel/bpf/helpers.c bpf_trace_copy_string() -> strncpy_from_user_nofault()

Type Parameter Key Value
PARAM_VALUE 0 dst 4096-ptr_max
PARAM_VALUE 1 unsafe_addr 0-18446744073709551614
BUF_SIZE 0 dst (-1)-0,512
BUF_SIZE 0 dst (-1)-0,512
DATA_SOURCE 0 dst $0
DATA_SOURCE 1 unsafe_addr $1
DATA_SOURCE 2 count $3
TERMINATED 0 dst 1
UNITS 0 dst unit_byte
UNITS 2 count unit_byte

kernel/bpf/helpers.c bpf_trace_copy_string() -> strncpy_from_user_nofault()

Type Parameter Key Value
PARAM_VALUE 0 dst 4096-ptr_max
BUF_SIZE 0 dst (-1)-0,512
BUF_SIZE 0 dst (-1)-0,512
DATA_SOURCE 0 dst $0
DATA_SOURCE 1 unsafe_addr $1
DATA_SOURCE 2 count $3
TERMINATED 0 dst 1
UNITS 0 dst unit_byte
UNITS 2 count unit_byte

kernel/trace/trace_eprobe.c fetch_store_string_user() -> strncpy_from_user_nofault()

Type Parameter Key Value
PARAM_VALUE 0 dst 0-ptr_max
PARAM_VALUE 2 count 1-u16max
DATA_SOURCE 0 dst r get_loc_data
DATA_SOURCE 1 unsafe_addr $0
RX_PATH
TASK_NOT_RUNNING
UNITS 1 unsafe_addr unit_byte

kernel/trace/trace_kprobe.c fetch_store_string_user() -> strncpy_from_user_nofault()

Type Parameter Key Value
PARAM_VALUE 0 dst 0-ptr_max
PARAM_VALUE 2 count 1-u16max
DATA_SOURCE 0 dst r get_loc_data
DATA_SOURCE 1 unsafe_addr $0
UNITS 1 unsafe_addr unit_byte