Defined in 1 files as a function:
Referenced in 3 files:
Smatch caller information:
net/core/skbuff.c skb_expand_head() -> is_skb_wmem()
| 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 |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| HOST_DATA | 0 | skb->csum | 0-192512[c] |
| HOST_DATA | 0 | skb->csum_offset | 0-u16max |
| HOST_DATA | 0 | skb->data_len | 0-u32max[c] |
| HOST_DATA | 0 | skb->inner_protocol | 1-255 |
| HOST_DATA | 0 | skb->len | 0-u32max[c] |
| HOST_DATA | 0 | skb->next->data_len | 0-u32max[c] |
| 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 | 0-u32max[c] |
| HOST_DATA | 0 | skb->prev->tstamp | 500000002-4294967299794967295[c] |
| 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->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->proto_down | |
| 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->extensions | |
| 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->next->tail | |
| 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 | 0 | skb | unit_byte |
| HALF_LOCKED2 | bh | ||
| HALF_LOCKED2 | rcu_read |
net/core/skbuff.c skb_expand_head() -> is_skb_wmem()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | skb | 4096-ptr_max |
| PARAM_VALUE | 0 | skb->destructor | 0,4096-ptr_max |
| BUF_SIZE | 0 | skb | (-1)-s32max |
| BUF_SIZE | 0 | skb | (-1)-s32max |
| DATA_SOURCE | 0 | skb | $0 [m] |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| HOST_DATA | 0 | skb->csum | 0-192512[c] |
| HOST_DATA | 0 | skb->csum_offset | 0-u16max |
| HOST_DATA | 0 | skb->data_len | 0-u32max[c] |
| HOST_DATA | 0 | skb->inner_protocol | 1-255 |
| HOST_DATA | 0 | skb->len | 0-u32max[c] |
| HOST_DATA | 0 | skb->next->data_len | 0-u32max[c] |
| 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 | 0-u32max[c] |
| HOST_DATA | 0 | skb->prev->tstamp | 500000002-4294967299794967295[c] |
| 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->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->proto_down | |
| 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->extensions | |
| 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->next->tail | |
| 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 | 0 | skb | unit_byte |
| HALF_LOCKED2 | bh | ||
| HALF_LOCKED2 | rcu_read |
net/ipv4/inet_fragment.c inet_frag_reasm_finish() -> is_skb_wmem()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | skb | 4096-ptr_max |
| PARAM_VALUE | 0 | skb->destructor | 0 |
| BUF_SIZE | 0 | skb | (-1)-s32max |
| BUF_SIZE | 0 | skb | (-1)-s32max |
| CAPPED_DATA | 0 | skb | 1 |
| DATA_SOURCE | 0 | skb | $1 |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| HOST_DATA | 0 | skb->csum | 0-4294967041[c] |
| HOST_DATA | 0 | skb->csum_offset | 0-u16max |
| HOST_DATA | 0 | skb->inner_protocol | 1-255 |
| HOST_DATA | 0 | skb->len | 0-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->tstamp | 500000002-4294967299794967295[c] |
| HOST_DATA | 0 | skb->protocol | 1-255 |
| HOST_DATA | 0 | skb->tstamp | 500000002-4294967299794967295[c] |
| 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->proto_down | |
| 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->extensions | |
| NO_OVERFLOW_SIMPLE | 0 | skb->len | |
| NO_OVERFLOW_SIMPLE | 0 | skb->next->data_len | |
| NO_OVERFLOW_SIMPLE | 0 | skb->next->end | |
| NO_OVERFLOW_SIMPLE | 0 | skb->next->len | |
| NO_OVERFLOW_SIMPLE | 0 | skb->next->tail | |
| NO_OVERFLOW_SIMPLE | 0 | skb->next->truesize | |
| 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 | 0 | skb | unit_byte |
| LOCK2 | rcu_read | ||
| HALF_LOCKED2 | &fq->q.lock | ||
| HALF_LOCKED2 | &qp->q.lock | ||
| HALF_LOCKED2 | bh | ||
| TYPE_LOCK | (struct inet_frag_queue)->lock |
net/ipv4/inet_fragment.c inet_frag_reasm_prepare() -> is_skb_wmem()
| 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 | $1 |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| HOST_DATA | 0 | skb->csum | 0-4294967041[c] |
| HOST_DATA | 0 | skb->csum_offset | 0-u16max |
| HOST_DATA | 0 | skb->inner_protocol | 1-255 |
| HOST_DATA | 0 | skb->len | 0-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->tstamp | 500000002-4294967299794967295[c] |
| HOST_DATA | 0 | skb->protocol | 1-255 |
| 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->proto_down | |
| 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->extensions | |
| NO_OVERFLOW_SIMPLE | 0 | skb->len | |
| NO_OVERFLOW_SIMPLE | 0 | skb->next->data_len | |
| NO_OVERFLOW_SIMPLE | 0 | skb->next->end | |
| NO_OVERFLOW_SIMPLE | 0 | skb->next->len | |
| NO_OVERFLOW_SIMPLE | 0 | skb->next->tail | |
| NO_OVERFLOW_SIMPLE | 0 | skb->next->truesize | |
| 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 | 0 | skb | unit_byte |
| LOCK2 | rcu_read | ||
| HALF_LOCKED2 | &fq->q.lock | ||
| HALF_LOCKED2 | &qp->q.lock | ||
| HALF_LOCKED2 | bh | ||
| TYPE_LOCK | (struct inet_frag_queue)->lock |
net/sched/sch_fq_codel.c fq_codel_enqueue() -> is_skb_wmem()
| 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 | |||
| HOST_DATA | 0 | skb->csum | 0-192512[c] |
| HOST_DATA | 0 | skb->csum_offset | 0-u16max |
| HOST_DATA | 0 | skb->data_len | 0-u32max[c] |
| HOST_DATA | 0 | skb->inner_protocol | 1-255 |
| HOST_DATA | 0 | skb->len | 0-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->tstamp | 500000002-4294967299794967295[c] |
| 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->proto_down | |
| 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->extensions | |
| 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 | |
| HALF_LOCKED2 | rcu_read |