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Defined in 1 files as a function:

Referenced in 1 files:

Smatch caller information:

net/core/skbuff.c __pskb_copy_fclone() -> skb_zerocopy_clone()

Type Parameter Key Value
PARAM_VALUE 0 nskb 4096-ptr_max
PARAM_VALUE 0 nskb->_nfct 0
PARAM_VALUE 0 nskb->_sk_redir 0
PARAM_VALUE 0 nskb->_skb_refdst 0
PARAM_VALUE 0 nskb->active_extensions 0
PARAM_VALUE 0 nskb->alloc_cpu 0
PARAM_VALUE 0 nskb->cloned 0
PARAM_VALUE 0 nskb->csum 0
PARAM_VALUE 0 nskb->csum_complete_sw 0
PARAM_VALUE 0 nskb->csum_level 0
PARAM_VALUE 0 nskb->csum_not_inet 0
PARAM_VALUE 0 nskb->csum_offset 0
PARAM_VALUE 0 nskb->csum_start 0
PARAM_VALUE 0 nskb->csum_valid 0
PARAM_VALUE 0 nskb->data 4096-ptr_max
PARAM_VALUE 0 nskb->decrypted 0
PARAM_VALUE 0 nskb->destructor 0
PARAM_VALUE 0 nskb->dev 0
PARAM_VALUE 0 nskb->dev_scratch 0
PARAM_VALUE 0 nskb->dst_pending_confirm 0
PARAM_VALUE 0 nskb->encap_hdr_csum 0
PARAM_VALUE 0 nskb->encapsulation 0
PARAM_VALUE 0 nskb->end 0
PARAM_VALUE 0 nskb->extensions 0
PARAM_VALUE 0 nskb->fclone 0-1
PARAM_VALUE 0 nskb->from_ingress 0
PARAM_VALUE 0 nskb->hash 0
PARAM_VALUE 0 nskb->hdr_len 0
PARAM_VALUE 0 nskb->head 1-u64max
PARAM_VALUE 0 nskb->head_frag 0
PARAM_VALUE 0 nskb->headers.alloc_cpu 0
PARAM_VALUE 0 nskb->headers.csum 0
PARAM_VALUE 0 nskb->headers.csum_complete_sw 0
PARAM_VALUE 0 nskb->headers.csum_level 0
PARAM_VALUE 0 nskb->headers.csum_not_inet 0
PARAM_VALUE 0 nskb->headers.csum_offset 0
PARAM_VALUE 0 nskb->headers.csum_start 0
PARAM_VALUE 0 nskb->headers.csum_valid 0
PARAM_VALUE 0 nskb->headers.decrypted 0
PARAM_VALUE 0 nskb->headers.dst_pending_confirm 0
PARAM_VALUE 0 nskb->headers.encap_hdr_csum 0
PARAM_VALUE 0 nskb->headers.encapsulation 0
PARAM_VALUE 0 nskb->headers.from_ingress 0
PARAM_VALUE 0 nskb->headers.hash 0
PARAM_VALUE 0 nskb->headers.ignore_df 0
PARAM_VALUE 0 nskb->headers.inner_ipproto 0
PARAM_VALUE 0 nskb->headers.inner_mac_header 0
PARAM_VALUE 0 nskb->headers.inner_network_header 0
PARAM_VALUE 0 nskb->headers.inner_protocol 0
PARAM_VALUE 0 nskb->headers.inner_protocol_type 0
PARAM_VALUE 0 nskb->headers.inner_transport_header 0
PARAM_VALUE 0 nskb->headers.ip_summed 0
PARAM_VALUE 0 nskb->headers.ipvs_property 0
PARAM_VALUE 0 nskb->headers.kcov_handle.val 0
PARAM_VALUE 0 nskb->headers.l4_hash 0
PARAM_VALUE 0 nskb->headers.mac_header 0
PARAM_VALUE 0 nskb->headers.mark 0
PARAM_VALUE 0 nskb->headers.napi_id 0
PARAM_VALUE 0 nskb->headers.ndisc_nodetype 0
PARAM_VALUE 0 nskb->headers.network_header 0
PARAM_VALUE 0 nskb->headers.nf_skip_egress 0
PARAM_VALUE 0 nskb->headers.nf_trace 0
PARAM_VALUE 0 nskb->headers.no_fcs 0
PARAM_VALUE 0 nskb->headers.offload_fwd_mark 0
PARAM_VALUE 0 nskb->headers.offload_l3_fwd_mark 0
PARAM_VALUE 0 nskb->headers.ooo_okay 0
PARAM_VALUE 0 nskb->headers.pkt_type 0
PARAM_VALUE 0 nskb->headers.priority 0
PARAM_VALUE 0 nskb->headers.protocol 0
PARAM_VALUE 0 nskb->headers.redirected 0
PARAM_VALUE 0 nskb->headers.remcsum_offload 0
PARAM_VALUE 0 nskb->headers.reserved_tailroom 0
PARAM_VALUE 0 nskb->headers.secmark 0
PARAM_VALUE 0 nskb->headers.sender_cpu 0
PARAM_VALUE 0 nskb->headers.skb_iif 0
PARAM_VALUE 0 nskb->headers.slow_gro 0
PARAM_VALUE 0 nskb->headers.sw_hash 0
PARAM_VALUE 0 nskb->headers.tc_at_ingress 0
PARAM_VALUE 0 nskb->headers.tc_depth 0
PARAM_VALUE 0 nskb->headers.tc_index 0
PARAM_VALUE 0 nskb->headers.tc_skip_classify 0
PARAM_VALUE 0 nskb->headers.transport_header 0
PARAM_VALUE 0 nskb->headers.tstamp_type 0
PARAM_VALUE 0 nskb->headers.unreadable 0
PARAM_VALUE 0 nskb->headers.vlan_all 0
PARAM_VALUE 0 nskb->headers.vlan_proto 0
PARAM_VALUE 0 nskb->headers.vlan_tci 0
PARAM_VALUE 0 nskb->headers.wifi_acked 0
PARAM_VALUE 0 nskb->headers.wifi_acked_valid 0
PARAM_VALUE 0 nskb->ignore_df 0
PARAM_VALUE 0 nskb->inner_ipproto 0
PARAM_VALUE 0 nskb->inner_mac_header 0
PARAM_VALUE 0 nskb->inner_network_header 0
PARAM_VALUE 0 nskb->inner_protocol 0
PARAM_VALUE 0 nskb->inner_protocol_type 0
PARAM_VALUE 0 nskb->inner_transport_header 0
PARAM_VALUE 0 nskb->ip_summed 0
PARAM_VALUE 0 nskb->ipvs_property 0
PARAM_VALUE 0 nskb->kcov_handle.val 0
PARAM_VALUE 0 nskb->l4_hash 0
PARAM_VALUE 0 nskb->list.next 0
PARAM_VALUE 0 nskb->list.prev 0
PARAM_VALUE 0 nskb->ll_node.next 0
PARAM_VALUE 0 nskb->mac_header u16max
PARAM_VALUE 0 nskb->mac_len 0
PARAM_VALUE 0 nskb->mark 0
PARAM_VALUE 0 nskb->napi_id 0
PARAM_VALUE 0 nskb->ndisc_nodetype 0
PARAM_VALUE 0 nskb->network_header 0
PARAM_VALUE 0 nskb->next 0
PARAM_VALUE 0 nskb->nf_skip_egress 0
PARAM_VALUE 0 nskb->nf_trace 0
PARAM_VALUE 0 nskb->no_fcs 0
PARAM_VALUE 0 nskb->nohdr 0
PARAM_VALUE 0 nskb->offload_fwd_mark 0
PARAM_VALUE 0 nskb->offload_l3_fwd_mark 0
PARAM_VALUE 0 nskb->ooo_okay 0
PARAM_VALUE 0 nskb->peeked 0
PARAM_VALUE 0 nskb->pkt_type 0
PARAM_VALUE 0 nskb->pp_recycle 0
PARAM_VALUE 0 nskb->prev 0
PARAM_VALUE 0 nskb->priority 0
PARAM_VALUE 0 nskb->protocol 0
PARAM_VALUE 0 nskb->queue_mapping 0
PARAM_VALUE 0 nskb->rbnode.__rb_parent_color 0
PARAM_VALUE 0 nskb->rbnode.rb_left 0
PARAM_VALUE 0 nskb->rbnode.rb_right 0
PARAM_VALUE 0 nskb->redirected 0
PARAM_VALUE 0 nskb->remcsum_offload 0
PARAM_VALUE 0 nskb->reserved_tailroom 0
PARAM_VALUE 0 nskb->secmark 0
PARAM_VALUE 0 nskb->sender_cpu 0
PARAM_VALUE 0 nskb->sk 0
PARAM_VALUE 0 nskb->skb_iif 0
PARAM_VALUE 0 nskb->skb_mstamp_ns 0
PARAM_VALUE 0 nskb->slow_gro 0
PARAM_VALUE 0 nskb->sw_hash 0
PARAM_VALUE 0 nskb->tc_at_ingress 0
PARAM_VALUE 0 nskb->tc_depth 0
PARAM_VALUE 0 nskb->tc_index 0
PARAM_VALUE 0 nskb->tc_skip_classify 0
PARAM_VALUE 0 nskb->tcp_tsorted_anchor.next 0
PARAM_VALUE 0 nskb->tcp_tsorted_anchor.prev 0
PARAM_VALUE 0 nskb->transport_header u16max
PARAM_VALUE 0 nskb->tstamp 0
PARAM_VALUE 0 nskb->tstamp_type 0
PARAM_VALUE 0 nskb->unreadable 0
PARAM_VALUE 0 nskb->users.refs.counter 1
PARAM_VALUE 0 nskb->vlan_all 0
PARAM_VALUE 0 nskb->vlan_proto 0
PARAM_VALUE 0 nskb->vlan_tci 0
PARAM_VALUE 0 nskb->wifi_acked 0
PARAM_VALUE 0 nskb->wifi_acked_valid 0
PARAM_VALUE 1 orig 4096-ptr_max
PARAM_VALUE 1 orig->dev->nd_net.net->ipv4.fqdir->f->frag_expire 0,663510801442193408,1753052602134376448,4007388366431105024,8876081723503042560
PARAM_VALUE 1 orig->dev->nd_net.net->ipv4.fqdir->f->qsize 0,304,320
PARAM_VALUE 1 orig->dev->ndisc_ops->fill_addr_option 4096-ptr_max
PARAM_VALUE 1 orig->dev->ndisc_ops->parse_options 4096-ptr_max
PARAM_VALUE 1 orig->dev->ndisc_ops->update 4096-ptr_max
PARAM_VALUE 1 orig->dev->rtnl_link_ops->maxtype 0-6,8-10,15,18,20,22,24,34,50
PARAM_VALUE 1 orig->dev->rtnl_link_ops->priv_size 0,8,32,40,48,56,88,112,120,144,160,224,240,256,296,616,624,728,736,744,1056,1128,1336,1616,2176,2240,2272,2560,3296,3544,3552,3720,9688-u64max
BUF_SIZE 0 nskb 0-u32max
BUF_SIZE 0 nskb 0-u32max
BUF_SIZE 1 orig (-1)-s32max
BUF_SIZE 1 orig (-1)-s32max
CAPPED_DATA 1 orig 1
DATA_SOURCE 0 nskb r __alloc_skb
DATA_SOURCE 1 orig $0
DATA_SOURCE 2 gfp_mask $2
RX_PATH
TASK_NOT_RUNNING
HOST_DATA 0 nskb->data_len 0-u32max[c]
HOST_DATA 0 nskb->len 0-u32max[c]
HOST_DATA 0 nskb->truesize 0-u32max[c]
HOST_DATA 1 orig->csum_offset 0-u16max
HOST_DATA 1 orig->data_len 0-u32max[c]
HOST_DATA 1 orig->len 0-u32max[c]
HOST_DATA 1 orig->next->csum_offset 0-u16max
HOST_DATA 1 orig->next->data_len 0-u32max[c]
HOST_DATA 1 orig->next->len 1-u32max[c]
HOST_DATA 1 orig->next->prev->data_len 0-u32max[c]
HOST_DATA 1 orig->prev->csum_offset 0-u16max
HOST_DATA 1 orig->prev->data_len 0-u32max[c]
HOST_DATA 1 orig->prev->len 0-u32max[c]
HOST_DATA 1 orig->prev->truesize 0-u32max
HOST_DATA 1 orig->prev->tstamp 500000002-4294967299794967295[c]
HOST_DATA 1 orig->prev->users.refs.counter s32min-0,2-s32max
HOST_DATA 1 orig->truesize 0-u32max
HOST_DATA 1 orig->tstamp 500000002-4294967299794967295[c]
HOST_DATA 1 orig->users.refs.counter s32min-0,2-s32max
HOST_DATA 1 *orig->data 0-255
NO_OVERFLOW_SIMPLE 0 nskb->data_len
NO_OVERFLOW_SIMPLE 0 nskb->len
NO_OVERFLOW_SIMPLE 0 nskb->truesize
NO_OVERFLOW_SIMPLE 1 orig->data_len
NO_OVERFLOW_SIMPLE 1 orig->dev->group
NO_OVERFLOW_SIMPLE 1 orig->dev->num_tc
NO_OVERFLOW_SIMPLE 1 orig->dev->proto_down
NO_OVERFLOW_SIMPLE 1 orig->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE 1 orig->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE 1 orig->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE 1 orig->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE 1 orig->dev->tx_queue_len
NO_OVERFLOW_SIMPLE 1 orig->end
NO_OVERFLOW_SIMPLE 1 orig->extensions
NO_OVERFLOW_SIMPLE 1 orig->len
NO_OVERFLOW_SIMPLE 1 orig->next->end
NO_OVERFLOW_SIMPLE 1 orig->next->len
NO_OVERFLOW_SIMPLE 1 orig->next->tail
NO_OVERFLOW_SIMPLE 1 orig->prev->data_len
NO_OVERFLOW_SIMPLE 1 orig->prev->end
NO_OVERFLOW_SIMPLE 1 orig->prev->len
NO_OVERFLOW_SIMPLE 1 orig->prev->tail
NO_OVERFLOW_SIMPLE 1 orig->prev->truesize
NO_OVERFLOW_SIMPLE 1 orig->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE 1 orig->tail
NO_OVERFLOW_SIMPLE 1 orig->truesize
UNITS 1 orig unit_byte
HALF_LOCKED2 &local->raw_sockets.lock
HALF_LOCKED2 &pool->lock
HALF_LOCKED2 bh
HALF_LOCKED2 global &fakelb_ifup_phys_lock
HALF_LOCKED2 global &hci_sk_list.lock
HALF_LOCKED2 global &qrtr_node_lock
HALF_LOCKED2 global &raw_sk_list.lock
HALF_LOCKED2 rcu_read

net/core/skbuff.c skb_split() -> skb_zerocopy_clone()

Type Parameter Key Value
PARAM_VALUE 0 nskb 4096-ptr_max
PARAM_VALUE 0 nskb->data 4096-ptr_max
PARAM_VALUE 1 orig 4096-ptr_max
PARAM_VALUE 1 orig->dev->nd_net.net->ipv4.fqdir->f->frag_expire 0,663510801442193408,1753052602134376448,4007388366431105024,8876081723503042560
PARAM_VALUE 1 orig->dev->nd_net.net->ipv4.fqdir->f->qsize 0,304,320
PARAM_VALUE 1 orig->dev->ndisc_ops->fill_addr_option 4096-ptr_max
PARAM_VALUE 1 orig->dev->ndisc_ops->parse_options 4570881757937598464
PARAM_VALUE 1 orig->dev->ndisc_ops->update 8455145027589103616
PARAM_VALUE 1 orig->dev->rtnl_link_ops->maxtype 0-6,8-10,15,18,20,22,24,34,50
PARAM_VALUE 1 orig->dev->rtnl_link_ops->priv_size 0,8,32,48,56,88,112,120,144,160,224,240,256,296,616,624,728,736,744,1056,1128,1336,1616,2176,2240,2272,2560,3296,3544,3552,3720,9688-u64max
PARAM_VALUE 2 gfp_mask 0
BUF_SIZE 0 nskb (-1)-s32max
BUF_SIZE 0 nskb (-1)-s32max
BUF_SIZE 1 orig (-1)-s32max
BUF_SIZE 1 orig (-1)-s32max
CAPPED_DATA 1 orig 1
DATA_SOURCE 0 nskb $1
DATA_SOURCE 1 orig $0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA 1 orig->csum_offset 0-u16max
HOST_DATA 1 orig->data_len 0-u32max[c]
HOST_DATA 1 orig->len 1-u32max[c]
HOST_DATA 1 orig->prev->csum_offset 0-u16max
HOST_DATA 1 orig->prev->data_len 0-u32max[c]
HOST_DATA 1 orig->prev->len 0-u32max[c]
HOST_DATA 1 orig->prev->tstamp 500000002-4294967299794967295[c]
HOST_DATA 1 orig->tstamp 500000002-4294967299794967295[c]
HOST_DATA 1 orig->users.refs.counter s32min-0,2-s32max
HOST_DATA 1 *orig->data 0-255
NO_OVERFLOW_SIMPLE 1 orig->data_len
NO_OVERFLOW_SIMPLE 1 orig->dev->group
NO_OVERFLOW_SIMPLE 1 orig->dev->num_tc
NO_OVERFLOW_SIMPLE 1 orig->dev->proto_down
NO_OVERFLOW_SIMPLE 1 orig->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE 1 orig->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE 1 orig->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE 1 orig->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE 1 orig->dev->tx_queue_len
NO_OVERFLOW_SIMPLE 1 orig->end
NO_OVERFLOW_SIMPLE 1 orig->extensions
NO_OVERFLOW_SIMPLE 1 orig->len
NO_OVERFLOW_SIMPLE 1 orig->next->end
NO_OVERFLOW_SIMPLE 1 orig->prev->end
NO_OVERFLOW_SIMPLE 1 orig->prev->len
NO_OVERFLOW_SIMPLE 1 orig->prev->tail
NO_OVERFLOW_SIMPLE 1 orig->prev->truesize
NO_OVERFLOW_SIMPLE 1 orig->tail
NO_OVERFLOW_SIMPLE 1 orig->truesize

net/core/skbuff.c skb_zerocopy() -> skb_zerocopy_clone()

Type Parameter Key Value
PARAM_VALUE 0 nskb 4096-ptr_max
PARAM_VALUE 1 orig 4096-ptr_max
PARAM_VALUE 1 orig->dev->header_ops->parse 0,836034408504639488,1549207736952049664,2557666104032284672,2873682388240314368,3226767679038275584,4717025337529622528,7964469038492160000
PARAM_VALUE 1 orig->dev->nd_net.net->ipv4.fqdir->f->frag_expire 0,663510801442193408,1753052602134376448,4007388366431105024,8876081723503042560
PARAM_VALUE 1 orig->dev->nd_net.net->ipv4.fqdir->f->qsize 0,304,320
PARAM_VALUE 1 orig->dev->ndisc_ops->fill_addr_option 4096-ptr_max
PARAM_VALUE 1 orig->dev->ndisc_ops->parse_options 4096-ptr_max
PARAM_VALUE 1 orig->dev->ndisc_ops->update 4096-ptr_max
PARAM_VALUE 1 orig->dev->rtnl_link_ops->maxtype 0-6,8-10,15,18,20,22,24,34,50
PARAM_VALUE 1 orig->dev->rtnl_link_ops->priv_size 0,8,32,40,48,56,88,112,120,144,160,224,240,256,296,616,624,728,736,744,1056,1128,1336,1616,2176,2240,2272,2560,3296,3544,3552,3720,9688-u64max
PARAM_VALUE 2 gfp_mask 2080
BUF_SIZE 0 nskb 0-s32max
BUF_SIZE 0 nskb 0-s32max
BUF_SIZE 1 orig (-1)-s32max
BUF_SIZE 1 orig (-1)-s32max
DATA_SOURCE 0 nskb $0
DATA_SOURCE 1 orig $1
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA 1 orig->csum 0-192512[c]
HOST_DATA 1 orig->csum_offset 0-u16max
HOST_DATA 1 orig->data_len 0-u32max[c]
HOST_DATA 1 orig->inner_protocol 1-255
HOST_DATA 1 orig->len 0-u32max[c]
HOST_DATA 1 orig->prev->csum_offset 0-u16max
HOST_DATA 1 orig->prev->data_len 0-u32max[c]
HOST_DATA 1 orig->prev->len 0-u32max[c]
HOST_DATA 1 orig->prev->tstamp 500000002-4294967299794967295[c]
HOST_DATA 1 orig->protocol 1-255
HOST_DATA 1 orig->tstamp 500000002-4294967299794967295[c]
HOST_DATA 1 orig->users.refs.counter s32min-0,2-s32max
HOST_DATA 1 *orig->data 0-255
NO_OVERFLOW_SIMPLE 1 orig->data_len
NO_OVERFLOW_SIMPLE 1 orig->dev->group
NO_OVERFLOW_SIMPLE 1 orig->dev->num_tc
NO_OVERFLOW_SIMPLE 1 orig->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE 1 orig->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE 1 orig->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE 1 orig->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE 1 orig->dev->tx_queue_len
NO_OVERFLOW_SIMPLE 1 orig->end
NO_OVERFLOW_SIMPLE 1 orig->extensions
NO_OVERFLOW_SIMPLE 1 orig->len
NO_OVERFLOW_SIMPLE 1 orig->prev->end
NO_OVERFLOW_SIMPLE 1 orig->prev->len
NO_OVERFLOW_SIMPLE 1 orig->prev->tail
NO_OVERFLOW_SIMPLE 1 orig->prev->truesize
NO_OVERFLOW_SIMPLE 1 orig->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE 1 orig->tail
NO_OVERFLOW_SIMPLE 1 orig->truesize
UNITS 1 orig unit_byte