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Documented in 1 files:

Defined in 1 files as a function:

Referenced in 5 files:

Smatch caller information:

net/kcm/kcmsock.c skb_copy_to_page_nocache() -> skb_len_add()

Type Parameter Key Value
PARAM_VALUE 0 skb 4096-ptr_max
CAPPED_DATA 1 delta 1
DATA_SOURCE 0 skb $2
DATA_SOURCE 1 delta $5
NOCHECK_CALL

net/core/skbuff.c skb_shift() -> skb_len_add()

Type Parameter Key Value
PARAM_VALUE 0 skb 4096-ptr_max
PARAM_VALUE 1 delta (-2147483647)-s32max
DATA_SOURCE 0 skb $1
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS 0 skb unit_byte
HALF_LOCKED2 &sk->sk_lock.slock
HALF_LOCKED2 sk

net/core/skbuff.c skb_shift() -> skb_len_add()

Type Parameter Key Value
PARAM_VALUE 0 skb 4096-ptr_max
CAPPED_DATA 1 delta 1
DATA_SOURCE 0 skb $0
DATA_SOURCE 1 delta $2
CONSTRAINT 1 delta <=49
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA 0 skb->next->prev->csum_offset 0-u16max
HOST_DATA 0 skb->next->prev->data_len 0-u32max[c]
HOST_DATA 0 skb->next->prev->len 1-u32max[c]
HOST_DATA 0 skb->next->prev->tstamp 500000002-4294967299794967295[c]
HOST_DATA 0 skb->prev->csum_offset 0-u16max
HOST_DATA 0 skb->prev->data_len 0-u32max[c]
HOST_DATA 0 skb->prev->len 1-u32max[c]
HOST_DATA 0 skb->prev->tstamp 500000002-4294967299794967295[c]
HOST_DATA 0 *skb->data 0-255
NO_OVERFLOW_SIMPLE 0 skb->sk->sk_backlog.len
UNITS 1 delta unit_byte
HALF_LOCKED2 &sk->sk_lock.slock
HALF_LOCKED2 sk

net/core/skbuff.c skb_splice_from_iter() -> skb_len_add()

Type Parameter Key Value
PARAM_VALUE 0 skb 4096-ptr_max
BUF_SIZE 0 skb (-1)-s32max
BUF_SIZE 0 skb (-1)-s32max
DATA_SOURCE 0 skb $0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA 1 delta s32min-s32max[c][u]
HALF_LOCKED2 &kcm->tx_mutex
HALF_LOCKED2 &vq->mutex
HALF_LOCKED2 sk

net/core/skbuff.c skb_zerocopy() -> skb_len_add()

Type Parameter Key Value
PARAM_VALUE 0 skb 4096-ptr_max
PARAM_VALUE 0 skb->data_len 0
BUF_SIZE 0 skb 0-s32max
BUF_SIZE 0 skb 0-s32max
DATA_SOURCE 0 skb $0
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS 1 delta unit_byte

net/ipv4/tcp.c skb_copy_to_page_nocache() -> skb_len_add()

Type Parameter Key Value
PARAM_VALUE 0 skb 4096-ptr_max
CAPPED_DATA 1 delta 1
DATA_SOURCE 0 skb $2
DATA_SOURCE 1 delta $5
NOCHECK_CALL

net/ipv4/esp4.c esp_output_head() -> skb_len_add()

Type Parameter Key Value
PARAM_VALUE 0 skb 4096-ptr_max
PARAM_VALUE 0 skb->data_len 0-1
PARAM_VALUE 1 delta (-2147483647)-s32max
BUF_SIZE 0 skb (-1)-s32max
BUF_SIZE 0 skb (-1)-s32max
CAPPED_DATA 0 skb 1
DATA_SOURCE 0 skb $1
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA 0 skb->csum 0-192512[c]
HOST_DATA 0 skb->csum_offset 0-u16max
HOST_DATA 0 skb->data_len 0-1[c]
HOST_DATA 0 skb->inner_protocol 1-255
HOST_DATA 0 skb->len 0-u32max[c]
HOST_DATA 0 skb->next->csum_offset 0-u16max
HOST_DATA 0 skb->next->data_len 0-u32max[c]
HOST_DATA 0 skb->next->len 1-u32max[c]
HOST_DATA 0 skb->prev->csum_offset 0-u16max
HOST_DATA 0 skb->prev->data_len 0-u32max[c]
HOST_DATA 0 skb->prev->len 0-u32max[c]
HOST_DATA 0 skb->prev->truesize 0-u32max
HOST_DATA 0 skb->prev->tstamp 500000002-4294967299794967295[c]
HOST_DATA 0 skb->prev->users.refs.counter s32min-0,2-s32max
HOST_DATA 0 skb->protocol 1-255
HOST_DATA 0 skb->truesize 0-u32max
HOST_DATA 0 skb->tstamp 500000002-4294967299794967295[c]
HOST_DATA 0 skb->users.refs.counter s32min-0,2-s32max
HOST_DATA 0 *skb->data 0-255
NO_OVERFLOW_SIMPLE 0 skb->data_len
NO_OVERFLOW_SIMPLE 0 skb->dev->group
NO_OVERFLOW_SIMPLE 0 skb->dev->num_tc
NO_OVERFLOW_SIMPLE 0 skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE 0 skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE 0 skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE 0 skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE 0 skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE 0 skb->end
NO_OVERFLOW_SIMPLE 0 skb->len
NO_OVERFLOW_SIMPLE 0 skb->next->end
NO_OVERFLOW_SIMPLE 0 skb->next->len
NO_OVERFLOW_SIMPLE 0 skb->prev->data_len
NO_OVERFLOW_SIMPLE 0 skb->prev->end
NO_OVERFLOW_SIMPLE 0 skb->prev->len
NO_OVERFLOW_SIMPLE 0 skb->prev->tail
NO_OVERFLOW_SIMPLE 0 skb->prev->truesize
NO_OVERFLOW_SIMPLE 0 skb->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE 0 skb->tail
NO_OVERFLOW_SIMPLE 0 skb->truesize
UNITS 1 delta unit_byte

net/ipv4/tcp_output.c tcp_send_syn_data() -> skb_len_add()

Type Parameter Key Value
PARAM_VALUE 0 skb 4096-ptr_max
PARAM_VALUE 1 delta 1-s32max
BUF_SIZE 0 skb 320
BUF_SIZE 0 skb 320
DATA_SOURCE 0 skb r tcp_stream_alloc_skb
DATA_SOURCE 1 delta r copy_page_from_iter
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS 1 delta unit_byte
HALF_LOCKED2 sk
HALF_LOCKED2 sk