Defined in 1 files as a prototype:
Defined in 1 files as a function:
Referenced in 4 files:
- net/ipv4/tcp.c, line 951
- net/ipv4/tcp_ipv4.c, line 3376
- net/ipv6/tcp_ipv6.c, line 2304
- net/mptcp/protocol.c, line 1162
Smatch caller information:
net/ipv4/tcp.c tcp_stream_alloc_skb() -> tcp_enter_memory_pressure()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | sk | 4096-ptr_max |
| BUF_SIZE | 0 | sk->__sk_common.skc_prot | (-1),448 |
| BUF_SIZE | 0 | sk->sk_user_data | (-1),232,368 |
| DATA_SOURCE | 0 | sk | $0 |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| NOCHECK_CALL | |||
| HOST_DATA | 0 | sk->sk_receive_queue.prev->csum | 0-126976[c] |
| HOST_DATA | 0 | sk->sk_receive_queue.prev->csum_offset | 0-u16max |
| HOST_DATA | 0 | sk->sk_receive_queue.prev->data_len | 0-u32max[c] |
| HOST_DATA | 0 | sk->sk_receive_queue.prev->next->csum | 0-126976[c] |
| HOST_DATA | 0 | sk->sk_receive_queue.prev->next->csum_offset | 0-u16max |
| HOST_DATA | 0 | sk->sk_receive_queue.prev->next->data_len | 0-u32max[c] |
| HOST_DATA | 0 | sk->sk_receive_queue.prev->next->truesize | 0-u32max |
| HOST_DATA | 0 | sk->sk_receive_queue.prev->truesize | 0-u32max |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.head->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.head->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.head->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.head->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->next->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->next->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->next->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->next->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_prot_creator->twsk_prot->twsk_slab->sheaf_capacity | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->next->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->next->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->next->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->next->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->prev->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->prev->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->prev->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->prev->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.prev->data_len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.prev->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.prev->next->data_len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.prev->next->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.prev->next->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.prev->truesize | |
| UNITS | 0 | sk | unit_byte |
| HALF_LOCKED2 | 0 | sk | |
| HALF_LOCKED2 | 0 | &sk->sk_callback_lock | |
| HALF_LOCKED2 | 0 | &sk->sk_lock.slock |
net/mptcp/protocol.c mptcp_enter_memory_pressure() -> tcp_enter_memory_pressure()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | sk | 4096-ptr_max |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| NOCHECK_CALL | |||
| HALF_LOCKED2 | sk |
net/tls/tls_device.c tls_do_allocation() -> (struct proto)->enter_memory_pressure()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | sk | 4096-ptr_max |
| PARAM_VALUE | 0 | sk->__sk_common.skc_bypass_prot_mem | 0 |
| PARAM_VALUE | 0 | sk->sk_backlog.head->sk->ns_tracker->alloc_stack_handle | 0-4294967295 |
| PARAM_VALUE | 0 | sk->sk_backlog.head->sk->ns_tracker->dead | 0-1 |
| PARAM_VALUE | 0 | sk->sk_backlog.head->sk->ns_tracker->free_stack_handle | 0-4294967295 |
| PARAM_VALUE | 0 | sk->sk_err | (-2147483647)-s32max |
| PARAM_VALUE | 0 | sk->sk_lock.owned | 1 |
| PARAM_VALUE | 0 | sk->sk_lock.wq.head.prev | 4096-ptr_max |
| PARAM_VALUE | 0 | sk->sk_lock.wq.head.prev->next | 4096-ptr_max |
| PARAM_VALUE | 0 | sk->sk_lock.wq.head.prev->next->next | 4096-ptr_max |
| CAPPED_DATA | 0 | sk | 1 |
| DATA_SOURCE | 0 | sk | $0 |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->next->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->next->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->next->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->next->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->prev->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->prev->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->prev->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->prev->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->truesize | |
| LOCK2 | 0 | sk | |
| HALF_LOCKED2 | &tls_ctx->tx_lock |
net/core/sock.c sk_enter_memory_pressure() -> (struct proto)->enter_memory_pressure()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | sk | 4096-ptr_max |
| PARAM_VALUE | 0 | sk->__sk_common.skc_bypass_prot_mem | 0 |
| PARAM_VALUE | 0 | sk->__sk_common.skc_prot | 4096-ptr_max |
| PARAM_VALUE | 0 | sk->__sk_common.skc_prot->enter_memory_pressure | 1-u64max |
| PARAM_VALUE | 0 | sk->channel | 0-127 |
| PARAM_VALUE | 0 | sk->ns_tracker->alloc_stack_handle | 0-4294967295 |
| PARAM_VALUE | 0 | sk->ns_tracker->dead | 0-1 |
| PARAM_VALUE | 0 | sk->ns_tracker->free_stack_handle | 0-4294967295 |
| PARAM_VALUE | 0 | sk->sk_backlog.head->sk->ns_tracker->alloc_stack_handle | 0-4294967295 |
| PARAM_VALUE | 0 | sk->sk_backlog.head->sk->ns_tracker->dead | 0-1 |
| PARAM_VALUE | 0 | sk->sk_backlog.head->sk->ns_tracker->free_stack_handle | 0-4294967295 |
| BUF_SIZE | 0 | sk | (-1),1-s32max |
| BUF_SIZE | 0 | sk | (-1),1-s32max |
| BUF_SIZE | 0 | sk->__sk_common.skc_prot | (-1),448 |
| BUF_SIZE | 0 | sk->sk_user_data | (-1),368 |
| CAPPED_DATA | 0 | sk | 1 |
| DATA_SOURCE | 0 | sk | $0 |
| STR_LEN | 0 | sk | (-1),21,33 |
| STR_LEN | 0 | sk | (-1),21,33 |
| CONTAINER | 0 | -240-40-0+0 | $(-1) |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| NOCHECK_CALL | |||
| HOST_DATA | 0 | sk->sk_receive_queue.prev->csum_offset | 0-u16max |
| HOST_DATA | 0 | sk->sk_receive_queue.prev->data_len | 0-u32max[c] |
| HOST_DATA | 0 | sk->sk_receive_queue.prev->next->csum_offset | 0-u16max |
| HOST_DATA | 0 | sk->sk_receive_queue.prev->next->data_len | 0-u32max[c] |
| HOST_DATA | 0 | sk->sk_receive_queue.prev->next->truesize | 0-u32max |
| HOST_DATA | 0 | sk->sk_receive_queue.prev->truesize | 0-u32max |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.head->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.head->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.head->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.head->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->next->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->next->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->next->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->next->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_backlog.tail->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_prot_creator->twsk_prot->twsk_slab->sheaf_capacity | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->next->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->next->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->next->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->next->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_receive_queue.prev->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->prev->end | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->prev->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->prev->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->prev->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->tail | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.next->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.prev->data_len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.prev->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.prev->next->data_len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.prev->next->len | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.prev->next->truesize | |
| NO_OVERFLOW_SIMPLE | 0 | sk->sk_write_queue.prev->truesize | |
| HALF_LOCKED2 | &kcm->tx_mutex | ||
| HALF_LOCKED2 | 0 | sk | |
| HALF_LOCKED2 | 0 | &sk->sk_lock.slock |