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https://issues.apache.org/jira/browse/MYNEWT-64?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christopher Collins resolved MYNEWT-64.
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Resolution: Fixed
This is implemented via two changes:
* Add a ble_hci_sched mutex that gets locked whenever the list of HCI tx slots
is read or modified.
* Add a handle per HCI tx slot. This allows client code to cancel an HCI
transmission before the tx callback is rendered unusable.
> BLE Host - HCI callback thread-safety
> -------------------------------------
>
> Key: MYNEWT-64
> URL: https://issues.apache.org/jira/browse/MYNEWT-64
> Project: Mynewt
> Issue Type: Bug
> Components: Nimble
> Reporter: Christopher Collins
> Assignee: Christopher Collins
> Fix For: v0_8_0_beta2
>
>
> When the host schedules an outgoing HCI command, it configures a callback
> which does the actual command formation. Some events can occur before the
> callback is executed which render the callback invalid (e.g., connection
> terminated).
> The fix is to ensure the appropriate resources are protected from deletion
> while an HCI command is scheduled.
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