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https://issues.apache.org/jira/browse/MYNEWT-700?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christopher Collins resolved MYNEWT-700.
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Resolution: Fixed
> BLE Host - Race condition: disconnect + att-tx
> ----------------------------------------------
>
> Key: MYNEWT-700
> URL: https://issues.apache.org/jira/browse/MYNEWT-700
> Project: Mynewt
> Issue Type: Bug
> Reporter: Christopher Collins
> Assignee: Christopher Collins
> Fix For: v1_1_0_rel
>
>
> Some parts of the ATT code assume a peer is still connected after an initial
> check. This assumption leads to a race condition when a task other than the
> host task is doing the transmitting (e.g., tx of unsolicited notification).
> It is possible that the peer gets disconnected after the tx function is
> called, but before it completes. When this occurs, an assertion fails
> (ble_att_conn_chan_find()).
> The fix is to remove this assumption. Always check that the connection /
> channel lookup succeeds before accessing the returned pointers.
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