commit a62c25ab87bb8a1f8b7f2b1d16337bd2dece4f50
author TYM Tsai <tymtsai@google.com> Mon Apr 28 12:35:49 2025 +0000
committer TYM Tsai <tymtsai@google.com> Thu May 08 07:05:53 2025 +0000
tree 637d9d1bfa2d136d808c8eea5e6859f30bfd3a17
parent a090aa24177b9099d44ede50ccab5791bd9e7b66

Fix deadlock between PMS and UMS threads

Resolve circular waiting in PMS side. It holds mLock in
setEnabledSettings(), then calls
getComponentEnabledSettingInternal() -> UMS to ask mUsersLock.
To fix, move the method out of mLock block

Symptom:
PMS a: hold mSnapshotLock ->  ask PMS:mLock
PMS b: hold mLock         ->  ask UMS:mUsersLock
UMS: hold mUsersLock      ->  ask PMS:mSnapshotLock

Bug: 414214527
Flag: EXEMPT bug fix
Test: atest CtsPackageInstallTestCases
Test: atest CtsPackageManagerTestCases
Test: atest CtsPackageManagerStatsHostTestCases
Change-Id: Ibad1f72477bc5b04fc1df129f593dc087272f3ee