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Defined in 1 files as a function:

Referenced in 2 files:

Smatch caller information:

net/ipv4/tcp_ipv4.c tcp_add_backlog() -> tcp_skb_can_collapse_rx()

Type Parameter Key Value
PARAM_VALUE 0 to 4096-ptr_max
PARAM_VALUE 0 to->cb 4096-ptr_max
PARAM_VALUE 1 from 4096-ptr_max
PARAM_VALUE 1 from->_nfct 0
PARAM_VALUE 1 from->_skb_refdst 0
PARAM_VALUE 1 from->cb 4096-ptr_max
PARAM_VALUE 1 from->data 4096-ptr_max
PARAM_VALUE 1 from->data->doff 5-15
PARAM_VALUE 1 from->dev 0
PARAM_VALUE 1 from->ip_summed 0,2-3
PARAM_VALUE 1 from->next->sk->ns_tracker->alloc_stack_handle 0-4294967295
PARAM_VALUE 1 from->next->sk->ns_tracker->dead 0-1
PARAM_VALUE 1 from->next->sk->ns_tracker->free_stack_handle 0-4294967295
PARAM_VALUE 1 from->next->sk->sk_peer_cred->process_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 1 from->next->sk->sk_peer_cred->process_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 1 from->next->sk->sk_peer_cred->request_key_auth->user->qnbytes s32min-s32max
PARAM_VALUE 1 from->next->sk->sk_peer_cred->request_key_auth->user->qnkeys s32min-s32max
PARAM_VALUE 1 from->next->sk->sk_peer_cred->session_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 1 from->next->sk->sk_peer_cred->session_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 1 from->next->sk->sk_peer_cred->thread_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 1 from->next->sk->sk_peer_cred->thread_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 1 from->pkt_type 0
PARAM_VALUE 1 from->sk->__req_common.skc_flags 0
PARAM_VALUE 1 from->sk->__req_common.skc_listener 0
PARAM_VALUE 1 from->sk->__req_common.skc_tw_dr 0
PARAM_VALUE 1 from->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->dfl_pwq 0-s64max
PARAM_VALUE 1 from->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->saved_max_active s32min-s32max
PARAM_VALUE 1 from->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->saved_min_active s32min-s32max
PARAM_VALUE 1 from->sk->__sk_common.skc_u16hashes 0-u32max
PARAM_VALUE 1 from->sk->ns_tracker->alloc_stack_handle 0-4294967295
PARAM_VALUE 1 from->sk->ns_tracker->dead 0-1
PARAM_VALUE 1 from->sk->ns_tracker->free_stack_handle 0-4294967295
PARAM_VALUE 1 from->sk->sk_peer_cred->process_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 1 from->sk->sk_peer_cred->process_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 1 from->sk->sk_peer_cred->request_key_auth->user->qnbytes s32min-s32max
PARAM_VALUE 1 from->sk->sk_peer_cred->request_key_auth->user->qnkeys s32min-s32max
PARAM_VALUE 1 from->sk->sk_peer_cred->session_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 1 from->sk->sk_peer_cred->session_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 1 from->sk->sk_peer_cred->thread_keyring->user->qnbytes s32min-s32max
PARAM_VALUE 1 from->sk->sk_peer_cred->thread_keyring->user->qnkeys s32min-s32max
PARAM_VALUE 1 *from->dev->name 0-255
BUF_SIZE 1 from (-1)-s32max
BUF_SIZE 1 from (-1)-s32max
CAPPED_DATA 1 from 1
CAPPED_DATA 1 from->len 1
DATA_SOURCE 1 from $1
FUZZY_MAX 1 from->data->doff 5
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HOST_DATA 1 from->csum 0-4294967040[c]
HOST_DATA 1 from->csum_offset 0-u16max
HOST_DATA 1 from->prev->csum_offset 0-u16max
HOST_DATA 1 from->prev->data_len 0-u32max[c]
HOST_DATA 1 from->prev->len 0-u32max[c]
HOST_DATA 1 from->prev->tstamp 500000002-4294967299794967295[c]
HOST_DATA 1 from->tstamp 500000002-4294967299794967295[c]
HOST_DATA 1 from->users.refs.counter s32min-0,2-s32max
HOST_DATA 1 *from->data 0-255
NO_OVERFLOW_SIMPLE 1 from->data_len
NO_OVERFLOW_SIMPLE 1 from->dev->group
NO_OVERFLOW_SIMPLE 1 from->dev->num_tc
NO_OVERFLOW_SIMPLE 1 from->dev->proto_down
NO_OVERFLOW_SIMPLE 1 from->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE 1 from->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE 1 from->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE 1 from->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE 1 from->dev->tx_queue_len
NO_OVERFLOW_SIMPLE 1 from->end
NO_OVERFLOW_SIMPLE 1 from->len
NO_OVERFLOW_SIMPLE 1 from->next->end
NO_OVERFLOW_SIMPLE 1 from->next->len
NO_OVERFLOW_SIMPLE 1 from->next->tail
NO_OVERFLOW_SIMPLE 1 from->next->truesize
NO_OVERFLOW_SIMPLE 1 from->prev->end
NO_OVERFLOW_SIMPLE 1 from->prev->len
NO_OVERFLOW_SIMPLE 1 from->prev->tail
NO_OVERFLOW_SIMPLE 1 from->prev->truesize
NO_OVERFLOW_SIMPLE 1 from->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE 1 from->tail
NO_OVERFLOW_SIMPLE 1 from->truesize
UNITS 0 to unit_byte
UNITS 1 from unit_byte
LOCK2 &sk->sk_lock.slock
TYPE_LOCK (struct socket_lock_t)->slock

net/ipv4/tcp_input.c tcp_collapse() -> tcp_skb_can_collapse_rx()

Type Parameter Key Value
PARAM_VALUE 0 to 4096-ptr_max
PARAM_VALUE 0 to->cb 4096-ptr_max
PARAM_VALUE 0 to->unreadable 0
PARAM_VALUE 1 from 4096-ptr_max
PARAM_VALUE 1 from->unreadable 0
DATA_SOURCE 1 from r tcp_skb_next
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &sk->sk_lock.slock
HALF_LOCKED2 sk

net/ipv4/tcp_input.c tcp_collapse() -> tcp_skb_can_collapse_rx()

Type Parameter Key Value
PARAM_VALUE 0 to 4096-ptr_max
PARAM_VALUE 0 to->cb 4096-ptr_max
PARAM_VALUE 0 to->destructor 3826643865618239488
PARAM_VALUE 0 to->next 4096-ptr_max
PARAM_VALUE 0 to->prev 4096-ptr_max
PARAM_VALUE 0 to->sk 4096-ptr_max
PARAM_VALUE 0 to->sk->__sk_common.skc_prot 4096-ptr_max
PARAM_VALUE 0 to->sk->sk_memcg 1-u64max
PARAM_VALUE 0 to->sk->sk_rcvbuf 0-2147483646
PARAM_VALUE 1 from 1-u64max
PARAM_VALUE 1 from->cb 4096-ptr_max
PARAM_VALUE 1 from->sk->ns_tracker->alloc_stack_handle 0-4294967295
PARAM_VALUE 1 from->sk->ns_tracker->dead 0-1
PARAM_VALUE 1 from->sk->ns_tracker->free_stack_handle 0-4294967295
PARAM_VALUE 1 from->sk->sk_callback_lock.dep_map->name 0-255
PARAM_VALUE 1 from->sk->sk_filter->rcu.func 1-u64max
PARAM_VALUE 1 from->sk->sk_owner->refcnt.counter 0-s32max
PARAM_VALUE 1 from->sk->sk_prot_creator->owner->refcnt.counter 0-s32max
PARAM_VALUE 1 from->sk->sk_reuseport_cb->rcu.func 1-u64max
BUF_SIZE 0 to s32min-s32max
DATA_SOURCE 0 to r alloc_skb
DATA_SOURCE 1 from r tcp_collapse_one
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE 0 to->sk->sk_backlog.len
HALF_LOCKED2 &sk->sk_lock.slock
HALF_LOCKED2 sk

net/ipv4/tcp_input.c tcp_try_coalesce() -> tcp_skb_can_collapse_rx()

Type Parameter Key Value
PARAM_VALUE 0 to 4096-ptr_max
PARAM_VALUE 0 to->cb 4096-ptr_max
PARAM_VALUE 1 from 4096-ptr_max
PARAM_VALUE 1 from->cb 4096-ptr_max
PARAM_VALUE 1 from->dev->rtnl_link_ops->priv_size 0,8,32,40,48,56,88,112,120,144,160,224,240,256,296,616,624,728,736,744,1056,1128,1336,1616,2176,2240,2272,2560,3296,3720,9688-u64max
PARAM_VALUE 1 *from->dev->name 0-255
BUF_SIZE 1 from (-1)-s32max
BUF_SIZE 1 from (-1)-s32max
DATA_SOURCE 0 to $1
DATA_SOURCE 1 from $2
RX_PATH
TASK_NOT_RUNNING
HOST_DATA 1 from->csum 0-4294967040[c]
HOST_DATA 1 from->csum_offset 0-u16max
HOST_DATA 1 from->data_len 0-u32max[c]
HOST_DATA 1 from->prev->csum_offset 0-u16max
HOST_DATA 1 from->prev->data_len 0-u32max[c]
HOST_DATA 1 from->prev->len 1-u32max[c]
HOST_DATA 1 from->prev->tstamp 500000002-4294967299794967295[c]
HOST_DATA 1 from->tstamp 500000002-4294967299794967295[c]
HOST_DATA 1 from->users.refs.counter s32min-0,2-s32max
HOST_DATA 1 *from->data 0-255
NO_OVERFLOW_SIMPLE 1 from->data_len
NO_OVERFLOW_SIMPLE 1 from->dev->group
NO_OVERFLOW_SIMPLE 1 from->dev->num_tc
NO_OVERFLOW_SIMPLE 1 from->dev->proto_down
NO_OVERFLOW_SIMPLE 1 from->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE 1 from->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE 1 from->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE 1 from->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE 1 from->dev->tx_queue_len
NO_OVERFLOW_SIMPLE 1 from->end
NO_OVERFLOW_SIMPLE 1 from->len
NO_OVERFLOW_SIMPLE 1 from->next->data_len
NO_OVERFLOW_SIMPLE 1 from->next->end
NO_OVERFLOW_SIMPLE 1 from->next->len
NO_OVERFLOW_SIMPLE 1 from->next->tail
NO_OVERFLOW_SIMPLE 1 from->next->truesize
NO_OVERFLOW_SIMPLE 1 from->prev->end
NO_OVERFLOW_SIMPLE 1 from->prev->len
NO_OVERFLOW_SIMPLE 1 from->prev->tail
NO_OVERFLOW_SIMPLE 1 from->prev->truesize
NO_OVERFLOW_SIMPLE 1 from->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE 1 from->tail
NO_OVERFLOW_SIMPLE 1 from->truesize
UNITS 0 to unit_byte
UNITS 1 from unit_byte
HALF_LOCKED2 &sk->sk_lock.slock
HALF_LOCKED2 sk