tcp_reset_keepalive_timer identifier - Linux source code next-20260811

Projects

linux

Versions

FIXME
- FIXME
  - next-20260811

Defined in 1 files as a prototype:

include/net/tcp.h, line 510 (as a prototype)

Defined in 1 files as a function:

net/ipv4/tcp_timer.c, line 760 (as a function)

Referenced in 4 files:

Smatch caller information:

net/ipv4/tcp.c __tcp_close() -> tcp_reset_keepalive_timer()

Type	Parameter	Key	Value
PARAM_VALUE	0	sk	4096-ptr_max
PARAM_VALUE	0	sk->__sk_common.skc_state	5
PARAM_VALUE	0	sk->__sk_common.skc_u16hashes	0-u32max
PARAM_VALUE	0	sk->sk_backlog.head	0
PARAM_VALUE	0	sk->sk_backlog.head->cb->type	4
PARAM_VALUE	0	sk->sk_backlog.head->dev->flags	1-u32max
PARAM_VALUE	0	sk->sk_backlog.head->dev->priv->arfs->filter_count	s32min-s32max
PARAM_VALUE	0	sk->sk_backlog.head->dev->priv->arfs->mode	0-4
PARAM_VALUE	0	sk->sk_backlog.head->dev->priv->last_filter_id	s32min-s32max
PARAM_VALUE	0	sk->sk_backlog.head->dev->priv->ntp_fltr_count	s32min-s32max
PARAM_VALUE	0	sk->sk_backlog.head->dev->priv->sp_task.cpu	s32min-s32max
PARAM_VALUE	0	sk->sk_backlog.head->dev->priv->sp_task.timer.flags	0-4294967295
PARAM_VALUE	0	sk->sk_backlog.head->dev->priv->sp_task.timer.is_hard	0-1
PARAM_VALUE	0	sk->sk_backlog.head->dev->priv->sp_task.timer.is_lazy	0-1
PARAM_VALUE	0	sk->sk_backlog.head->dev->priv->sp_task.timer.is_queued	0-1
PARAM_VALUE	0	sk->sk_backlog.head->dev->priv->sp_task.timer.is_soft	0-1
PARAM_VALUE	0	sk->sk_backlog.head->next->sk->ns_tracker->alloc_stack_handle	0-4294967295
PARAM_VALUE	0	sk->sk_backlog.head->next->sk->ns_tracker->dead	0-1
PARAM_VALUE	0	sk->sk_backlog.head->next->sk->ns_tracker->free_stack_handle	0-4294967295
PARAM_VALUE	0	sk->sk_backlog.head->sk->__sk_common.skc_net.net->notrefcnt_tracker.dead	1
PARAM_VALUE	0	sk->sk_backlog.head->sk->__sk_common.skc_net.net->refcnt_tracker.dead	1
PARAM_VALUE	0	sk->sk_backlog.head->sk->__sk_common.skc_prot	4096-ptr_max
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_backlog.head->sk->sk_backlog.rmem_alloc.counter	s32min-2147483646
PARAM_VALUE	0	sk->sk_backlog.head->sk->sk_backlog_rcv	0-1770402027252219903,1770402027252219905-3047833183539765247,3047833183539765249-u64max
PARAM_VALUE	0	sk->sk_backlog.head->sk->sk_callback_lock.owner	(-1)
PARAM_VALUE	0	sk->sk_backlog.head->sk->sk_callback_lock.owner_cpu	u32max
PARAM_VALUE	0	sk->sk_backlog.head->sk->sk_callback_lock.raw_lock.cnts.counter	0-s32max
PARAM_VALUE	0	sk->sk_backlog.head->sk->sk_filter->rcu.func	1-u64max
PARAM_VALUE	0	sk->sk_backlog.head->sk->sk_owner->refcnt.counter	0-s32max
PARAM_VALUE	0	sk->sk_backlog.head->sk->sk_prot_creator->owner->refcnt.counter	0-s32max
PARAM_VALUE	0	sk->sk_backlog.head->sk->sk_rcu.func	1-u64max
PARAM_VALUE	0	sk->sk_backlog.head->sk->sk_reuseport_cb->rcu.func	1-u64max
PARAM_VALUE	0	sk->sk_backlog.len	0
PARAM_VALUE	0	sk->sk_callback_lock.dep_map->name	0-255
PARAM_VALUE	0	sk->sk_lock.slock.rlock.dep_map->name	0-255
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
PARAM_VALUE	0	sk->sk_owner->refcnt.counter	0-s32max
PARAM_VALUE	0	sk->sk_prot_creator->owner->refcnt.counter	0-s32max
PARAM_VALUE	0	*sk->sk_backlog.head->data->hdr	0-4294967295
PARAM_VALUE	0	*sk->sk_backlog.head->dev->name	0-255
PARAM_VALUE	1	len	0-s32max,18446744071562067968-u64max
CAPPED_DATA	0	sk	1
DATA_SOURCE	0	sk	$0
PREEMPT_ADD			<- disables preempt
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
NO_OVERFLOW_SIMPLE	0	sk->sk_backlog.len
NO_OVERFLOW_SIMPLE	0	sk->sk_prot_creator->twsk_prot->twsk_slab->sheaf_capacity
NO_OVERFLOW_SIMPLE	0	sk->sk_receive_queue.prev->data_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->data_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->data_len
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->data_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
UNITS	0	sk	unit_byte
LOCK2		bh
LOCK2	0	&sk->sk_lock.slock
TYPE_LOCK		(struct socket_lock_t)->slock

net/ipv4/tcp.c tcp_sock_set_keepidle_locked() -> tcp_reset_keepalive_timer()

Type	Parameter	Key	Value
PARAM_VALUE	0	sk	4096-ptr_max
PARAM_VALUE	1	len	0-8191750,4286775797-u32max
BUF_SIZE	0	sk->__sk_common.skc_prot	(-1),448
CAPPED_DATA	1	len	1
DATA_SOURCE	0	sk	$0
FUZZY_MAX	1	len	u32max
HARD_MAX	1	len	u32max
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	1	len	0-8191750,4286775797-u32max[c]
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		sk
HALF_LOCKED2	0	sk
HALF_LOCKED2	0	&sk->sk_lock.slock

net/ipv4/tcp_input.c tcp_finish_connect() -> tcp_reset_keepalive_timer()

Type	Parameter	Key	Value
PARAM_VALUE	0	sk	4096-ptr_max
PARAM_VALUE	0	sk->__sk_common.skc_net.net	4096-ptr_max
PARAM_VALUE	0	sk->__sk_common.skc_net.net->mctp.bind_lock.dep_map->name	0-255
PARAM_VALUE	0	sk->__sk_common.skc_net.net->mctp.bind_lock.first_waiter->list.prev->next	5159360019465732096
PARAM_VALUE	0	sk->__sk_common.skc_net.net->mctp.bind_lock.first_waiter->list.prev->prev	5159360019465732096
PARAM_VALUE	0	sk->__sk_common.skc_net.net->mctp.keys_lock.rlock.dep_map->name	0-255
PARAM_VALUE	0	sk->__sk_common.skc_node->next->pprev	1-u64max
PARAM_VALUE	0	sk->__sk_common.skc_prot->h.raw_hash->lock.rlock.dep_map->name	0-255
PARAM_VALUE	0	sk->__sk_common.skc_prot->h.smc_hash->lock->owner	(-4611686018427387904)-4611686018427387903
PARAM_VALUE	0	sk->__sk_common.skc_prot->h.smc_hash->lock.dep_map->name	0-255
PARAM_VALUE	0	sk->__sk_common.skc_prot->h.smc_hash->lock.owner	(-1)
PARAM_VALUE	0	sk->__sk_common.skc_prot->h.smc_hash->lock.owner_cpu	4294967295
PARAM_VALUE	0	sk->__sk_common.skc_prot->h.smc_hash->lock.raw_lock.cnts.counter	0-s32max
PARAM_VALUE	0	sk->listener->ns_tracker->alloc_stack_handle	0-4294967295
PARAM_VALUE	0	sk->listener->ns_tracker->dead	0-1
PARAM_VALUE	0	sk->listener->ns_tracker->free_stack_handle	0-4294967295
PARAM_VALUE	0	sk->listener->sk_callback_lock.dep_map->name	0-255
PARAM_VALUE	0	sk->listener->sk_lock.owned	1
PARAM_VALUE	0	sk->listener->sk_lock.slock.rlock.dep_map->name	0-255
PARAM_VALUE	0	sk->listener->sk_owner->refcnt.counter	0-s32max
PARAM_VALUE	0	sk->listener->sk_prot_creator->owner->refcnt.counter	0-s32max
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_dst_pending_confirm	1-u32max
PARAM_VALUE	0	sk->sk_lock.dep_map->name	0-255
PARAM_VALUE	0	sk->sk_lock.owned	0
PARAM_VALUE	0	sk->sk_lock.slock.rlock.dep_map->name	0-255
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
PARAM_VALUE	0	sk->sk_pacing_rate	0-1099511627775
PARAM_VALUE	0	sk->sk_sndbuf	0-s32max
PARAM_VALUE	0	sk->sk_userlocks	1-255
PARAM_VALUE	0	*sk->sk_backlog.head->dev->name	0-255
PARAM_VALUE	1	len	250-8191750
CAPPED_DATA	0	sk	1
CAPPED_DATA	0	sk->__sk_common.skc_net.net	1
CAPPED_DATA	0	sk->sk_dst_cache	1
DATA_SOURCE	0	sk	$0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
NO_OVERFLOW_SIMPLE	0	sk->sk_backlog.len
UNITS	0	sk	unit_byte
HALF_LOCKED2	0	sk

net/ipv4/tcp_timer.c tcp_keepalive_timer() -> tcp_reset_keepalive_timer()

Type	Parameter	Key	Value
PARAM_VALUE	0	sk	4096-ptr_max
PARAM_VALUE	0	sk->sk_lock.owned	1
PARAM_VALUE	0	sk->sk_lock.slock.rlock.dep_map->name	0-255
PARAM_VALUE	1	len	12
BUF_SIZE	0	sk	1480
PREEMPT_ADD			<- disables preempt
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
LOCK2	0	&sk->sk_lock.slock
TYPE_LOCK		(struct socket_lock_t)->slock

net/ipv4/tcp_timer.c tcp_keepalive_timer() -> tcp_reset_keepalive_timer()

Type	Parameter	Key	Value
PARAM_VALUE	0	sk	4096-ptr_max
PARAM_VALUE	0	sk->sk_lock.slock.rlock.dep_map->name	0-255
PARAM_VALUE	1	len	0-8191750,4286775797-u32max
BUF_SIZE	0	sk	1480
CAPPED_DATA	0	sk	1
CAPPED_DATA	1	len	1
FUZZY_MAX	1	len	125
PREEMPT_ADD			<- disables preempt
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
LOCK2	0	&sk->sk_lock.slock
TYPE_LOCK		(struct socket_lock_t)->slock

net/ipv4/tcp_timer.c tcp_set_keepalive() -> tcp_reset_keepalive_timer()

Type	Parameter	Key	Value
PARAM_VALUE	0	sk	4096-ptr_max
PARAM_VALUE	0	sk->__sk_common.skc_prot	4096-ptr_max
PARAM_VALUE	1	len	250-8191750
BUF_SIZE	0	sk->__sk_common.skc_prot	(-1),448
DATA_SOURCE	0	sk	$0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
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		sk
HALF_LOCKED2	0	sk
HALF_LOCKED2	0	&sk->sk_lock.slock

net/ipv4/tcp_minisocks.c tcp_create_openreq_child() -> tcp_reset_keepalive_timer()

Type	Parameter	Key	Value
PARAM_VALUE	0	sk	4096-ptr_max
PARAM_VALUE	0	sk->__sk_common.skc_state	3
PARAM_VALUE	0	sk->tcp_retransmit_timer.entry.pprev	0
PARAM_VALUE	0	sk->tcp_retransmit_timer.flags	0-4194302
PARAM_VALUE	0	sk->tcp_retransmit_timer.lockdep_map->name	0-255
PARAM_VALUE	1	len	250-8191750
CAPPED_DATA	0	sk	1
CAPPED_DATA	0	sk->__sk_common.skc_net.net	1
DATA_SOURCE	0	sk	r inet_csk_clone_lock
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HALF_LOCKED2		&sk->sk_lock.slock
HALF_LOCKED2		bh
HALF_LOCKED2		rcu_read
HALF_LOCKED2		sk