Fix deadlock by not acquiring lock when reporting proximity
There is a deadlock situation from AttentionManagerService acquiring
lock before callings back to its clients with the proximity update. This
can cause a deadlock because the clients, while holding their own locks,
can call AttentionManagerService again.
Thread 1:
Acquires attention lock -> AttentionManager Service reports proximityUpdate to VoiceInteraction -> tries to acquire voice lock
Thread 2:
Acquires voice lock -> VoiceService tries to cancel proximity updates
-> tries to acquire attention lock
The deadlock can be fixed by removing the acquiring attention lock step
before reporting proximityUpdates to the clients.
Bug: 261143716
Test: atest CtsAttentionServiceDeviceTestCases
Change-Id: I9f7d520cbcfd57032a9476853acad025fd7a6b95
Merged-In: I9f7d520cbcfd57032a9476853acad025fd7a6b95
(cherry picked from commit a28af297d370fa3bcea14e0b6883343433a35d9c)
1 file changed