Christopher Collins created MYNEWT-700:
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Summary: 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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