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Defined in 1 files as a function:

Referenced in 1 files:

Smatch caller information:

drivers/infiniband/core/device.c ib_dealloc_device() -> (struct ib_device_ops)->dealloc_driver()

Type Parameter Key Value
PARAM_VALUE 0 ib_dev 4096-ptr_max
PARAM_VALUE 0 ib_dev->client_data_rwsem.first_waiter->handoff_set 0-1
PARAM_VALUE 0 ib_dev->client_data_rwsem.first_waiter->type 0-1
PARAM_VALUE 0 ib_dev->coredev.ports_kobj->sd->attr.open->nr_mmapped 0-4294967295
PARAM_VALUE 0 ib_dev->dev.power.wakeirq->status 0-4294967295
PARAM_VALUE 0 ib_dev->driver_def->needs_fn_offset 0,35,40,48,72,88,96,112,136,232,240,264,272,288,296,312,336,344,352,360,368,376,384,392,400,408,416,424,432,440,448,472,480,488,496,520,536,544,552,560,568,576,584,592,600,608,616,624,632,640,648,656,664,672,680-s64max
PARAM_VALUE 0 ib_dev->link_ops->dellink 0,2904923252148084736
PARAM_VALUE 0 ib_dev->ops.dealloc_driver 1-u64max
PARAM_VALUE 0 ib_dev->port_data->cache.last_port_state 1,4
PARAM_VALUE 0 ib_dev->port_data->immutable.pkey_tbl_len 0-u16max
BUF_SIZE 0 ib_dev (-1),5000
BUF_SIZE 0 ib_dev (-1),5000
BUF_SIZE 0 ib_dev->dev.parent (-1),1616
CAPPED_DATA 0 ib_dev 1
DATA_SOURCE 0 ib_dev $0
STR_LEN 0 ib_dev (-1)
STR_LEN 0 ib_dev (-1)
CONTAINER 0 -928-8+0 $(-1)
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA 0 ib_dev->attrs.atomic_cap 0-u32max
HOST_DATA 0 ib_dev->attrs.cq_caps.max_cq_moderation_count 0-u16max
HOST_DATA 0 ib_dev->attrs.cq_caps.max_cq_moderation_period 0-u16max
HOST_DATA 0 ib_dev->attrs.device_cap_flags 0-u64max
HOST_DATA 0 ib_dev->attrs.fw_ver 0-u64max
HOST_DATA 0 ib_dev->attrs.hca_core_clock 0-u64max
HOST_DATA 0 ib_dev->attrs.hw_ver 0-u32max
HOST_DATA 0 ib_dev->attrs.kernel_cap_flags 0-u64max
HOST_DATA 0 ib_dev->attrs.local_ca_ack_delay 0-255
HOST_DATA 0 ib_dev->attrs.masked_atomic_cap 0-u32max
HOST_DATA 0 ib_dev->attrs.max_ah 0-s32max
HOST_DATA 0 ib_dev->attrs.max_cq 0-s32max
HOST_DATA 0 ib_dev->attrs.max_cqe 0-s32max
HOST_DATA 0 ib_dev->attrs.max_dm_size 0-u64max
HOST_DATA 0 ib_dev->attrs.max_ee 0-s32max
HOST_DATA 0 ib_dev->attrs.max_ee_init_rd_atom 0-s32max
HOST_DATA 0 ib_dev->attrs.max_ee_rd_atom 0-s32max
HOST_DATA 0 ib_dev->attrs.max_fast_reg_page_list_len 0-u32max
HOST_DATA 0 ib_dev->attrs.max_mcast_grp 0-s32max
HOST_DATA 0 ib_dev->attrs.max_mcast_qp_attach 0-s32max
HOST_DATA 0 ib_dev->attrs.max_mr 0-s32max
HOST_DATA 0 ib_dev->attrs.max_mr_size 0-u64max
HOST_DATA 0 ib_dev->attrs.max_mw 0-s32max
HOST_DATA 0 ib_dev->attrs.max_pd 0-s32max
HOST_DATA 0 ib_dev->attrs.max_pi_fast_reg_page_list_len 0-u32max
HOST_DATA 0 ib_dev->attrs.max_pkeys 0-u16max
HOST_DATA 0 ib_dev->attrs.max_qp 0-s32max
HOST_DATA 0 ib_dev->attrs.max_qp_init_rd_atom 0-s32max
HOST_DATA 0 ib_dev->attrs.max_qp_rd_atom 0-s32max
HOST_DATA 0 ib_dev->attrs.max_qp_wr 0-s32max
HOST_DATA 0 ib_dev->attrs.max_raw_ethy_qp 0-s32max
HOST_DATA 0 ib_dev->attrs.max_raw_ipv6_qp 0-s32max
HOST_DATA 0 ib_dev->attrs.max_rdd 0-s32max
HOST_DATA 0 ib_dev->attrs.max_recv_sge 0-s32max
HOST_DATA 0 ib_dev->attrs.max_res_rd_atom 0-s32max
HOST_DATA 0 ib_dev->attrs.max_send_sge 0-s32max
HOST_DATA 0 ib_dev->attrs.max_sge_rd 0-s32max
HOST_DATA 0 ib_dev->attrs.max_sgl_rd 0-u32max
HOST_DATA 0 ib_dev->attrs.max_srq 0-s32max
HOST_DATA 0 ib_dev->attrs.max_srq_sge 0-s32max
HOST_DATA 0 ib_dev->attrs.max_srq_wr 0-s32max
HOST_DATA 0 ib_dev->attrs.max_total_mcast_qp_attach 0-s32max
HOST_DATA 0 ib_dev->attrs.max_wq_type_rq 0-u32max
HOST_DATA 0 ib_dev->attrs.odp_caps.general_caps 0-u64max
HOST_DATA 0 ib_dev->attrs.odp_caps.per_transport_caps.rc_odp_caps 0-u32max
HOST_DATA 0 ib_dev->attrs.odp_caps.per_transport_caps.uc_odp_caps 0-u32max
HOST_DATA 0 ib_dev->attrs.odp_caps.per_transport_caps.ud_odp_caps 0-u32max
HOST_DATA 0 ib_dev->attrs.odp_caps.per_transport_caps.xrc_odp_caps 0-u32max
HOST_DATA 0 ib_dev->attrs.page_size_cap 0-u64max
HOST_DATA 0 ib_dev->attrs.raw_packet_caps 0-u32max
HOST_DATA 0 ib_dev->attrs.rss_caps.max_rwq_indirection_table_size 0-u32max
HOST_DATA 0 ib_dev->attrs.rss_caps.max_rwq_indirection_tables 0-u32max
HOST_DATA 0 ib_dev->attrs.rss_caps.supported_qpts 0-u32max
HOST_DATA 0 ib_dev->attrs.sig_guard_cap s32min-s32max
HOST_DATA 0 ib_dev->attrs.sig_prot_cap s32min-s32max
HOST_DATA 0 ib_dev->attrs.sys_image_guid 0-u64max
HOST_DATA 0 ib_dev->attrs.timestamp_mask 0-u64max
HOST_DATA 0 ib_dev->attrs.tm_caps.flags 0-u32max
HOST_DATA 0 ib_dev->attrs.tm_caps.max_num_tags 0-u32max
HOST_DATA 0 ib_dev->attrs.tm_caps.max_ops 0-u32max
HOST_DATA 0 ib_dev->attrs.tm_caps.max_rndv_hdr_size 0-u32max
HOST_DATA 0 ib_dev->attrs.tm_caps.max_sge 0-u32max
HOST_DATA 0 ib_dev->attrs.vendor_id 0-u32max
HOST_DATA 0 ib_dev->attrs.vendor_part_id 0-u32max
HOST_DATA 0 ib_dev->cache_lock.magic 0-u32max
HOST_DATA 0 ib_dev->cache_lock.owner_cpu 0-u32max
HOST_DATA 0 ib_dev->cache_lock.raw_lock.cnts.counter s32min-s32max
HOST_DATA 0 ib_dev->cache_lock.raw_lock.wlocked 0-255
HOST_DATA 0 ib_dev->cc_dma_bounce 0-1
HOST_DATA 0 ib_dev->client_data.xa_flags 0-u32max
HOST_DATA 0 ib_dev->client_data_rwsem.count.counter s64min-s64max
HOST_DATA 0 ib_dev->client_data_rwsem.osq.tail.counter s32min-s32max
HOST_DATA 0 ib_dev->client_data_rwsem.owner.counter s64min-s64max
HOST_DATA 0 ib_dev->compat_devs.xa_flags 0-u32max
HOST_DATA 0 ib_dev->compat_devs_mutex.osq.tail.counter s32min-s32max
HOST_DATA 0 ib_dev->compat_devs_mutex.owner.counter s64min-s64max
HOST_DATA 0 ib_dev->coredev.dev.bus_dma_limit 0-u64max
HOST_DATA 0 ib_dev->coredev.dev.coherent_dma_mask 0-u64max
HOST_DATA 0 ib_dev->coredev.dev.devt 0-u32max
HOST_DATA 0 ib_dev->coredev.dev.dma_uses_io_tlb 0-1
HOST_DATA 0 ib_dev->coredev.dev.id 0-u32max
HOST_DATA 0 ib_dev->coredev.dev.kobj.kref.refcount.refs.counter s32min-s32max
HOST_DATA 0 ib_dev->coredev.dev.kobj.release.cpu s32min-s32max
HOST_DATA 0 ib_dev->coredev.dev.kobj.release.timer.expires 0-u64max
HOST_DATA 0 ib_dev->coredev.dev.kobj.release.timer.flags 0-u32max
HOST_DATA 0 ib_dev->coredev.dev.kobj.release.work.data.counter s64min-s64max
HOST_DATA 0 ib_dev->coredev.dev.kobj.state_add_uevent_sent 0-1
HOST_DATA 0 ib_dev->coredev.dev.kobj.state_in_sysfs 0-1
HOST_DATA 0 ib_dev->coredev.dev.kobj.state_initialized 0-1
HOST_DATA 0 ib_dev->coredev.dev.kobj.state_remove_uevent_sent 0-1
HOST_DATA 0 ib_dev->coredev.dev.kobj.uevent_suppress 0-1
HOST_DATA 0 ib_dev->coredev.dev.links.status 0-u32max
HOST_DATA 0 ib_dev->coredev.dev.mutex.osq.tail.counter s32min-s32max
HOST_DATA 0 ib_dev->coredev.dev.mutex.owner.counter s64min-s64max
HOST_DATA 0 ib_dev->coredev.dev.numa_node s32min-s32max
HOST_DATA 0 ib_dev->coredev.dev.power.accounting_timestamp 0-u64max
HOST_DATA 0 ib_dev->coredev.dev.power.active_time 0-u64max
HOST_DATA 0 ib_dev->coredev.dev.power.async_suspend 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.autosuspend_delay s32min-s32max
HOST_DATA 0 ib_dev->coredev.dev.power.can_wakeup 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.child_count.counter s32min-s32max
HOST_DATA 0 ib_dev->coredev.dev.power.completion.done 0-u32max
HOST_DATA 0 ib_dev->coredev.dev.power.deferred_resume 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.detach_power_off 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.direct_complete 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.disable_depth 0-7
HOST_DATA 0 ib_dev->coredev.dev.power.driver_flags 0-u32max
HOST_DATA 0 ib_dev->coredev.dev.power.early_init 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.idle_notification 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.ignore_children 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.in_dpm_list 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.irq_safe 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.is_late_suspended 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.is_noirq_suspended 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.is_prepared 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.is_suspended 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.last_busy 0-u64max
HOST_DATA 0 ib_dev->coredev.dev.power.last_status s32min-s32max
HOST_DATA 0 ib_dev->coredev.dev.power.links_count 0-u32max
HOST_DATA 0 ib_dev->coredev.dev.power.may_skip_resume 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.memalloc_noio 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.must_resume 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.needs_force_resume 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.no_callbacks 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.no_pm 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.no_pm_callbacks 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.out_band_wakeup 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.power_state.event s32min-s32max
HOST_DATA 0 ib_dev->coredev.dev.power.request 0-u32max
HOST_DATA 0 ib_dev->coredev.dev.power.request_pending 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.runtime_auto 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.runtime_error s32min-s32max
HOST_DATA 0 ib_dev->coredev.dev.power.runtime_status s32min-s32max
HOST_DATA 0 ib_dev->coredev.dev.power.smart_suspend 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.strict_midlayer 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.suspended_time 0-u64max
HOST_DATA 0 ib_dev->coredev.dev.power.syscore 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.timer_autosuspends 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.timer_expires 0-u64max
HOST_DATA 0 ib_dev->coredev.dev.power.usage_count.counter s32min-s32max
HOST_DATA 0 ib_dev->coredev.dev.power.use_autosuspend 0-1
HOST_DATA 0 ib_dev->coredev.dev.power.work_in_progress 0-1
HOST_DATA 0 ib_dev->coredev.dev.removable 0-u32max
HOST_DATA 0 ib_dev->dev.bus_dma_limit 0-u64max
HOST_DATA 0 ib_dev->dev.coherent_dma_mask 0-u64max
HOST_DATA 0 ib_dev->dev.devt 0-u32max
HOST_DATA 0 ib_dev->dev.dma_uses_io_tlb 0-1
HOST_DATA 0 ib_dev->dev.id 0-u32max
HOST_DATA 0 ib_dev->dev.kobj.kref.refcount.refs.counter s32min-s32max
HOST_DATA 0 ib_dev->dev.kobj.release.cpu s32min-s32max
HOST_DATA 0 ib_dev->dev.kobj.release.timer.expires 0-u64max
HOST_DATA 0 ib_dev->dev.kobj.release.timer.flags 0-u32max
HOST_DATA 0 ib_dev->dev.kobj.release.work.data.counter s64min-s64max
HOST_DATA 0 ib_dev->dev.kobj.state_add_uevent_sent 0-1
HOST_DATA 0 ib_dev->dev.kobj.state_in_sysfs 0-1
HOST_DATA 0 ib_dev->dev.kobj.state_initialized 0-1
HOST_DATA 0 ib_dev->dev.kobj.state_remove_uevent_sent 0-1
HOST_DATA 0 ib_dev->dev.kobj.uevent_suppress 0-1
HOST_DATA 0 ib_dev->dev.links.status 0,3
HOST_DATA 0 ib_dev->dev.mutex.osq.tail.counter s32min-s32max
HOST_DATA 0 ib_dev->dev.mutex.owner.counter s64min-s64max
HOST_DATA 0 ib_dev->dev.numa_node s32min-s32max
HOST_DATA 0 ib_dev->dev.power.accounting_timestamp 0-u64max
HOST_DATA 0 ib_dev->dev.power.active_time 0-u64max
HOST_DATA 0 ib_dev->dev.power.async_suspend 0-1
HOST_DATA 0 ib_dev->dev.power.autosuspend_delay s32min-s32max
HOST_DATA 0 ib_dev->dev.power.can_wakeup 0-1
HOST_DATA 0 ib_dev->dev.power.child_count.counter s32min-s32max
HOST_DATA 0 ib_dev->dev.power.completion.done u32max
HOST_DATA 0 ib_dev->dev.power.deferred_resume 0-1
HOST_DATA 0 ib_dev->dev.power.detach_power_off 0-1
HOST_DATA 0 ib_dev->dev.power.direct_complete 0-1
HOST_DATA 0 ib_dev->dev.power.disable_depth 0-7
HOST_DATA 0 ib_dev->dev.power.driver_flags 0-u32max
HOST_DATA 0 ib_dev->dev.power.early_init 0-1
HOST_DATA 0 ib_dev->dev.power.idle_notification 0-1
HOST_DATA 0 ib_dev->dev.power.ignore_children 0-1
HOST_DATA 0 ib_dev->dev.power.in_dpm_list 0-1
HOST_DATA 0 ib_dev->dev.power.irq_safe 0-1
HOST_DATA 0 ib_dev->dev.power.is_late_suspended 0-1
HOST_DATA 0 ib_dev->dev.power.is_noirq_suspended 0-1
HOST_DATA 0 ib_dev->dev.power.is_prepared 0-1
HOST_DATA 0 ib_dev->dev.power.is_suspended 0-1
HOST_DATA 0 ib_dev->dev.power.last_busy 0-u64max
HOST_DATA 0 ib_dev->dev.power.last_status s32min-s32max
HOST_DATA 0 ib_dev->dev.power.links_count 0-u32max
HOST_DATA 0 ib_dev->dev.power.may_skip_resume 0-1
HOST_DATA 0 ib_dev->dev.power.memalloc_noio 0-1
HOST_DATA 0 ib_dev->dev.power.must_resume 0-1
HOST_DATA 0 ib_dev->dev.power.needs_force_resume 0-1
HOST_DATA 0 ib_dev->dev.power.no_callbacks 0-1
HOST_DATA 0 ib_dev->dev.power.no_pm 0-1
HOST_DATA 0 ib_dev->dev.power.no_pm_callbacks 0-1
HOST_DATA 0 ib_dev->dev.power.out_band_wakeup 0-1
HOST_DATA 0 ib_dev->dev.power.power_state.event s32min-s32max
HOST_DATA 0 ib_dev->dev.power.request 0-u32max
HOST_DATA 0 ib_dev->dev.power.request_pending 0-1
HOST_DATA 0 ib_dev->dev.power.runtime_auto 0-1
HOST_DATA 0 ib_dev->dev.power.runtime_error s32min-s32max
HOST_DATA 0 ib_dev->dev.power.runtime_status s32min-s32max
HOST_DATA 0 ib_dev->dev.power.smart_suspend 0-1
HOST_DATA 0 ib_dev->dev.power.strict_midlayer 0-1
HOST_DATA 0 ib_dev->dev.power.suspended_time 0-u64max
HOST_DATA 0 ib_dev->dev.power.syscore 0-1
HOST_DATA 0 ib_dev->dev.power.timer_autosuspends 0-1
HOST_DATA 0 ib_dev->dev.power.timer_expires 0-u64max
HOST_DATA 0 ib_dev->dev.power.usage_count.counter s32min-s32max
HOST_DATA 0 ib_dev->dev.power.use_autosuspend 0-1
HOST_DATA 0 ib_dev->dev.power.work_in_progress 0-1
HOST_DATA 0 ib_dev->dev.removable 0-u32max
HOST_DATA 0 ib_dev->event_handler_rwsem.count.counter s64min-s64max
HOST_DATA 0 ib_dev->event_handler_rwsem.osq.tail.counter s32min-s32max
HOST_DATA 0 ib_dev->event_handler_rwsem.owner.counter s64min-s64max
HOST_DATA 0 ib_dev->hw_stats_attr_index 0-255
HOST_DATA 0 ib_dev->index 0-u32max
HOST_DATA 0 ib_dev->is_switch 0-1
HOST_DATA 0 ib_dev->iw_driver_flags 0-u32max
HOST_DATA 0 ib_dev->kverbs_provider 0-1
HOST_DATA 0 ib_dev->lag_flags 0-u32max
HOST_DATA 0 ib_dev->local_dma_lkey 0-u32max
HOST_DATA 0 ib_dev->name_assign_type 0-u32max
HOST_DATA 0 ib_dev->node_guid 0-u64max
HOST_DATA 0 ib_dev->node_type 0-255
HOST_DATA 0 ib_dev->num_comp_vectors s32min-s32max
HOST_DATA 0 ib_dev->ops.driver_id 0-u32max
HOST_DATA 0 ib_dev->ops.size_ib_ah 0-u64max
HOST_DATA 0 ib_dev->ops.size_ib_counters 0-u64max
HOST_DATA 0 ib_dev->ops.size_ib_cq 0-u64max
HOST_DATA 0 ib_dev->ops.size_ib_dmah 0-u64max
HOST_DATA 0 ib_dev->ops.size_ib_mw 0-u64max
HOST_DATA 0 ib_dev->ops.size_ib_pd 0-u64max
HOST_DATA 0 ib_dev->ops.size_ib_qp 0-u64max
HOST_DATA 0 ib_dev->ops.size_ib_rwq_ind_table 0-u64max
HOST_DATA 0 ib_dev->ops.size_ib_srq 0-u64max
HOST_DATA 0 ib_dev->ops.size_ib_ucontext 0-u64max
HOST_DATA 0 ib_dev->ops.size_ib_xrcd 0-u64max
HOST_DATA 0 ib_dev->ops.size_rdma_counter 0-u64max
HOST_DATA 0 ib_dev->ops.uverbs_abi_ver 0-u32max
HOST_DATA 0 ib_dev->ops.uverbs_no_driver_id_binding 0-1
HOST_DATA 0 ib_dev->ops.uverbs_robust_udata 0-1
HOST_DATA 0 ib_dev->phys_port_cnt 0-u32max
HOST_DATA 0 ib_dev->refcount.refs.counter s32min-s32max
HOST_DATA 0 ib_dev->subdev_lock.osq.tail.counter 0-s32max
HOST_DATA 0 ib_dev->subdev_lock.owner.counter s64min-s64max
HOST_DATA 0 ib_dev->type 0-u32max
HOST_DATA 0 ib_dev->unreg_completion.done 0-u32max
HOST_DATA 0 ib_dev->unreg_completion.wait.lock.magic 0-u32max
HOST_DATA 0 ib_dev->unreg_completion.wait.lock.owner_cpu 0-u32max
HOST_DATA 0 ib_dev->unreg_completion.wait.lock.raw_lock.locked 0-255
HOST_DATA 0 ib_dev->unreg_completion.wait.lock.raw_lock.locked_pending 0-u16max
HOST_DATA 0 ib_dev->unreg_completion.wait.lock.raw_lock.pending 0-255
HOST_DATA 0 ib_dev->unreg_completion.wait.lock.raw_lock.tail 0-u16max
HOST_DATA 0 ib_dev->unreg_completion.wait.lock.raw_lock.val.counter s32min-s32max
HOST_DATA 0 ib_dev->unregistration_lock.osq.tail.counter 0-s32max
HOST_DATA 0 ib_dev->unregistration_lock.owner.counter s64min-s64max
HOST_DATA 0 ib_dev->unregistration_work.data.counter s64min-s64max
HOST_DATA 0 ib_dev->use_cq_dim 0-1
HOST_DATA 0 ib_dev->uverbs_cmd_mask 0-u64max
NO_OVERFLOW_SIMPLE 0 ib_dev->hw_stats_attr_index
NO_OVERFLOW_SIMPLE 0 ib_dev->num_comp_vectors
NO_OVERFLOW_SIMPLE 0 ib_dev->phys_port_cnt
HALF_LOCKED2 &dev->mutex
HALF_LOCKED2 &esw->offloads.reps_lock
HALF_LOCKED2 global &be_adapter_list_lock
HALF_LOCKED2 global &bnxt_re_mutex
HALF_LOCKED2 global &link_ops_rwsem
HALF_LOCKED2 global &mthca_device_mutex
HALF_LOCKED2 global &qedr_dev_list_lock
HALF_LOCKED2 global &uld_mutex
HALF_LOCKED2 global &usnic_ib_ibdev_list_lock
HALF_LOCKED2 0 &ib_dev->unregistration_lock