Defined in 1 files as a prototype:

Defined in 1 files as a function:

Referenced in 2 files:

Smatch caller information:

net/ipv4/syncookies.c cookie_tcp_check() -> cookie_tcp_reqsk_alloc()

Type Parameter Key Value
PARAM_VALUE 0 ops 7526321648135888896
PARAM_VALUE 1 sk 4096-ptr_max
PARAM_VALUE 1 sk->__sk_common.skc_net.net->ipv4.sysctl_tcp_syncookies 1-255
PARAM_VALUE 1 sk->__sk_common.skc_state 10
PARAM_VALUE 1 sk->ns_tracker->alloc_stack_handle 0-4294967295
PARAM_VALUE 1 sk->ns_tracker->dead 0-1
PARAM_VALUE 1 sk->ns_tracker->free_stack_handle 0-4294967295
PARAM_VALUE 1 sk->sk_backlog.head->sk->ns_tracker->alloc_stack_handle 0-4294967295
PARAM_VALUE 1 sk->sk_backlog.head->sk->ns_tracker->dead 0-1
PARAM_VALUE 1 sk->sk_backlog.head->sk->ns_tracker->free_stack_handle 0-4294967295
PARAM_VALUE 1 sk->sk_peer_cred->process_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->process_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->request_key_auth->user->qnbytes s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->request_key_auth->user->qnkeys s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->session_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->session_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->thread_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->thread_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 1 sk->sk_socket->sk->ns_tracker->alloc_stack_handle 0-4294967295
PARAM_VALUE 1 sk->sk_socket->sk->ns_tracker->dead 0-1
PARAM_VALUE 1 sk->sk_socket->sk->ns_tracker->free_stack_handle 0-4294967295
PARAM_VALUE 2 skb 4096-ptr_max
PARAM_VALUE 2 skb->cb 4096-ptr_max
PARAM_VALUE 2 skb->ip_summed 0,2-3
PARAM_VALUE 2 skb->next->sk->ns_tracker->alloc_stack_handle 0-4294967295
PARAM_VALUE 2 skb->next->sk->ns_tracker->dead 0-1
PARAM_VALUE 2 skb->next->sk->ns_tracker->free_stack_handle 0-4294967295
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->process_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->process_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->request_key_auth->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->request_key_auth->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->session_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->session_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->thread_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->thread_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->sk 0
PARAM_VALUE 2 skb->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->dfl_pwq 0-s64max
PARAM_VALUE 2 skb->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->saved_max_active s32min-s32max
PARAM_VALUE 2 skb->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->saved_min_active s32min-s32max
PARAM_VALUE 2 skb->sk->ns_tracker->alloc_stack_handle 0-4294967295
PARAM_VALUE 2 skb->sk->ns_tracker->dead 0-1
PARAM_VALUE 2 skb->sk->ns_tracker->free_stack_handle 0-4294967295
PARAM_VALUE 2 skb->sk->sk_peer_cred->process_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->process_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->request_key_auth->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->request_key_auth->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->session_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->session_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->thread_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->thread_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 2 *skb->dev->name 0-255
PARAM_VALUE 3 tcp_opt 6712755952086876160
PARAM_VALUE 3 tcp_opt->dsack 0
PARAM_VALUE 3 tcp_opt->mss_clamp 1-u16max
PARAM_VALUE 3 tcp_opt->rcv_tsecr 0-255
PARAM_VALUE 3 tcp_opt->sack_ok 0
PARAM_VALUE 3 tcp_opt->saw_tstamp 0
PARAM_VALUE 3 tcp_opt->smc_ok 0
PARAM_VALUE 3 tcp_opt->snd_wscale 0
PARAM_VALUE 3 tcp_opt->wscale_ok 0
PARAM_VALUE 4 mss 536,1300,1440,1460
PARAM_VALUE 5 tsoff 0
BUF_SIZE 1 sk->__sk_common.skc_prot (-1),448
BUF_SIZE 2 skb (-1)-s32max
BUF_SIZE 2 skb (-1)-s32max
CAPPED_DATA 1 sk->__sk_common.skc_net.net 1
CAPPED_DATA 1 sk->psp_assoc 1
DATA_SOURCE 1 sk $1
DATA_SOURCE 2 skb $2
DATA_SOURCE 4 mss r __cookie_v4_check
MEM_ZERO 3 tcp_opt
RX_PATH
TASK_NOT_RUNNING
HOST_DATA 2 skb->csum 0-4294967040[c]
HOST_DATA 2 skb->csum_offset 0-u16max
HOST_DATA 2 skb->data_len 0-u32max[c]
HOST_DATA 2 skb->len 0-u32max[c]
HOST_DATA 2 skb->prev->csum_offset 0-u16max
HOST_DATA 2 skb->prev->data_len 0-u32max[c]
HOST_DATA 2 skb->prev->len 1-u32max[c]
HOST_DATA 2 skb->prev->tstamp 500000002-4294967299794967295[c]
HOST_DATA 2 skb->tstamp 500000002-4294967299794967295[c]
HOST_DATA 2 skb->users.refs.counter s32min-0,2-s32max
HOST_DATA 2 *skb->data 0-255
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.head->data_len
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.head->end
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.head->len
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.len
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.tail->data_len
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.tail->end
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.tail->len
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.tail->next->data_len
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.tail->next->end
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.tail->next->len
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->end
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->len
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->next->end
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->next->len
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->next->tail
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->next->truesize
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->tail
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->truesize
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->end
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->len
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->prev->end
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->prev->len
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->prev->tail
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->prev->truesize
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->tail
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->truesize
NO_OVERFLOW_SIMPLE 2 skb->data_len
NO_OVERFLOW_SIMPLE 2 skb->dev->group
NO_OVERFLOW_SIMPLE 2 skb->dev->num_tc
NO_OVERFLOW_SIMPLE 2 skb->dev->proto_down
NO_OVERFLOW_SIMPLE 2 skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE 2 skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE 2 skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE 2 skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE 2 skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE 2 skb->end
NO_OVERFLOW_SIMPLE 2 skb->len
NO_OVERFLOW_SIMPLE 2 skb->next->data_len
NO_OVERFLOW_SIMPLE 2 skb->next->end
NO_OVERFLOW_SIMPLE 2 skb->next->len
NO_OVERFLOW_SIMPLE 2 skb->next->tail
NO_OVERFLOW_SIMPLE 2 skb->next->truesize
NO_OVERFLOW_SIMPLE 2 skb->prev->end
NO_OVERFLOW_SIMPLE 2 skb->prev->len
NO_OVERFLOW_SIMPLE 2 skb->prev->tail
NO_OVERFLOW_SIMPLE 2 skb->prev->truesize
NO_OVERFLOW_SIMPLE 2 skb->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE 2 skb->tail
NO_OVERFLOW_SIMPLE 2 skb->truesize
UNITS 1 sk unit_byte
UNITS 2 skb unit_byte
HALF_LOCKED2 1 sk
HALF_LOCKED2 1 &sk->sk_lock.slock

net/ipv6/syncookies.c cookie_tcp_check() -> cookie_tcp_reqsk_alloc()

Type Parameter Key Value
PARAM_VALUE 0 ops 8053103009269706752
PARAM_VALUE 1 sk 4096-ptr_max
PARAM_VALUE 1 sk->__sk_common.skc_net.net->ipv4.sysctl_tcp_syncookies 1-255
PARAM_VALUE 1 sk->__sk_common.skc_state 10
PARAM_VALUE 1 sk->ns_tracker->alloc_stack_handle 0-4294967295
PARAM_VALUE 1 sk->ns_tracker->dead 0-1
PARAM_VALUE 1 sk->ns_tracker->free_stack_handle 0-4294967295
PARAM_VALUE 1 sk->sk_backlog.head->sk->ns_tracker->alloc_stack_handle 0-4294967295
PARAM_VALUE 1 sk->sk_backlog.head->sk->ns_tracker->dead 0-1
PARAM_VALUE 1 sk->sk_backlog.head->sk->ns_tracker->free_stack_handle 0-4294967295
PARAM_VALUE 1 sk->sk_peer_cred->process_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->process_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->request_key_auth->user->qnbytes s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->request_key_auth->user->qnkeys s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->session_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->session_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->thread_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 1 sk->sk_peer_cred->thread_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 1 sk->sk_socket->sk->ns_tracker->alloc_stack_handle 0-4294967295
PARAM_VALUE 1 sk->sk_socket->sk->ns_tracker->dead 0-1
PARAM_VALUE 1 sk->sk_socket->sk->ns_tracker->free_stack_handle 0-4294967295
PARAM_VALUE 2 skb 4096-ptr_max
PARAM_VALUE 2 skb->ip_summed 0,2-3
PARAM_VALUE 2 skb->next->sk->ns_tracker->alloc_stack_handle 0-4294967295
PARAM_VALUE 2 skb->next->sk->ns_tracker->dead 0-1
PARAM_VALUE 2 skb->next->sk->ns_tracker->free_stack_handle 0-4294967295
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->process_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->process_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->request_key_auth->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->request_key_auth->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->session_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->session_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->thread_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->next->sk->sk_peer_cred->thread_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->protocol 0-2047,2049-u16max
PARAM_VALUE 2 skb->sk 0
PARAM_VALUE 2 skb->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->dfl_pwq 0-s64max
PARAM_VALUE 2 skb->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->saved_max_active s32min-s32max
PARAM_VALUE 2 skb->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->saved_min_active s32min-s32max
PARAM_VALUE 2 skb->sk->ns_tracker->alloc_stack_handle 0-4294967295
PARAM_VALUE 2 skb->sk->ns_tracker->dead 0-1
PARAM_VALUE 2 skb->sk->ns_tracker->free_stack_handle 0-4294967295
PARAM_VALUE 2 skb->sk->sk_peer_cred->process_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->process_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->request_key_auth->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->request_key_auth->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->session_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->session_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->thread_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 2 skb->sk->sk_peer_cred->thread_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 2 *skb->dev->name 0-255
PARAM_VALUE 3 tcp_opt 3461739717314322432
PARAM_VALUE 3 tcp_opt->dsack 0
PARAM_VALUE 3 tcp_opt->mss_clamp 1-u16max
PARAM_VALUE 3 tcp_opt->rcv_tsecr 0-255
PARAM_VALUE 3 tcp_opt->sack_ok 0
PARAM_VALUE 3 tcp_opt->saw_tstamp 0
PARAM_VALUE 3 tcp_opt->smc_ok 0
PARAM_VALUE 3 tcp_opt->snd_wscale 0
PARAM_VALUE 3 tcp_opt->wscale_ok 0
PARAM_VALUE 4 mss 1220,1420,1440,8940
PARAM_VALUE 5 tsoff 0
BUF_SIZE 1 sk->__sk_common.skc_prot (-1),448
BUF_SIZE 2 skb (-1)-s32max
BUF_SIZE 2 skb (-1)-s32max
CAPPED_DATA 1 sk->__sk_common.skc_net.net 1
CAPPED_DATA 1 sk->psp_assoc 1
DATA_SOURCE 1 sk $1
DATA_SOURCE 2 skb $2
DATA_SOURCE 4 mss r __cookie_v6_check
MEM_ZERO 3 tcp_opt
RX_PATH
TASK_NOT_RUNNING
HOST_DATA 2 skb->csum 0-126976[c]
HOST_DATA 2 skb->csum_offset 0-u16max
HOST_DATA 2 skb->data_len 0-u32max[c]
HOST_DATA 2 skb->len 0-u32max[c]
HOST_DATA 2 skb->prev->csum_offset 0-u16max
HOST_DATA 2 skb->prev->data_len 0-u32max[c]
HOST_DATA 2 skb->prev->len 1-u32max[c]
HOST_DATA 2 skb->prev->tstamp 500000002-4294967299794967295[c]
HOST_DATA 2 skb->tstamp 500000002-4294967299794967295[c]
HOST_DATA 2 skb->users.refs.counter s32min-0,2-s32max
HOST_DATA 2 *skb->data 0-255
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.head->data_len
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.head->end
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.len
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.tail->data_len
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.tail->end
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.tail->next->data_len
NO_OVERFLOW_SIMPLE 1 sk->sk_backlog.tail->next->end
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->end
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->len
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->next->end
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->next->len
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->next->tail
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->next->truesize
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->tail
NO_OVERFLOW_SIMPLE 1 sk->sk_receive_queue.prev->truesize
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->end
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->len
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->prev->end
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->prev->len
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->prev->tail
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->prev->truesize
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->tail
NO_OVERFLOW_SIMPLE 1 sk->sk_write_queue.next->truesize
NO_OVERFLOW_SIMPLE 2 skb->data_len
NO_OVERFLOW_SIMPLE 2 skb->dev->group
NO_OVERFLOW_SIMPLE 2 skb->dev->num_tc
NO_OVERFLOW_SIMPLE 2 skb->dev->proto_down
NO_OVERFLOW_SIMPLE 2 skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE 2 skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE 2 skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE 2 skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE 2 skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE 2 skb->end
NO_OVERFLOW_SIMPLE 2 skb->len
NO_OVERFLOW_SIMPLE 2 skb->next->data_len
NO_OVERFLOW_SIMPLE 2 skb->next->end
NO_OVERFLOW_SIMPLE 2 skb->next->len
NO_OVERFLOW_SIMPLE 2 skb->next->tail
NO_OVERFLOW_SIMPLE 2 skb->next->truesize
NO_OVERFLOW_SIMPLE 2 skb->prev->end
NO_OVERFLOW_SIMPLE 2 skb->prev->len
NO_OVERFLOW_SIMPLE 2 skb->prev->tail
NO_OVERFLOW_SIMPLE 2 skb->prev->truesize
NO_OVERFLOW_SIMPLE 2 skb->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE 2 skb->tail
NO_OVERFLOW_SIMPLE 2 skb->truesize
UNITS 1 sk unit_byte
UNITS 2 skb unit_byte
HALF_LOCKED2 1 sk
HALF_LOCKED2 1 &sk->sk_lock.slock