tree 1e4d1055b86ed81138c76a8c4ce61f1dfe4a3cb1
parent a28210c45dd6e0da7882e43e60252f608028c4d7
author Arthur Ishiguro <arthuri@google.com> 1600805115 -0700
committer Anis Assi <anisassi@google.com> 1605210401 -0800

Prevent mEventCache UAF in SensorEventConnection

Since there is no check to see if SensorEventConnection has been
destroyed, the mEventCache pointer can still be used even after it
was freed.

Bug: 168211968
Test: Run test code that attempts to enable a sensor after destroying
the SensorEventConnection, and verify no system_server crash occurs.

Change-Id: Ia9275b7cc574df371cdb2e1b80c6699df193b580
Merged-In: Ia9275b7cc574df371cdb2e1b80c6699df193b580
(cherry picked from commit bbf3b377482aeac64c23556bcb2a129d944629ed)