tree 6bbcb810203151884943e97ecdd7a09a5f683f6c
parent e07afb81e27b8feefbb161c24968ba14d1f6050e
author Zim <zezeozue@google.com> 1652975602 +0100
committer Zim <zezeozue@google.com> 1652977030 +0100

Abort FUSE as part of volume reset

This fixes a bug in Android T where MediaProvider leaked FUSE fds in
it's process preveventing it from dying after being killed. This
resulted in the MP in a zombie state.

Even though, this bug was more prevalent in Android T due to a change
in the Parcel lifecycle (see b/233216232), this bug could have always
occurred in theory.

This fix should be harmless since after volume reset, all FUSE volumes
should be unmounted and aborting the FUSE connections will either
no-op or actually prevent the FUSE daemon from getting wedged in a
zombie state.

Test: Manually trigger a FUSE fd leak in the MediaProvider, kill it
and verify that it is restarted without zombie.
Bug: 233216232
Bug: 231792374

Change-Id: I9e559a48b9a72e6ecbc3a277a09ea5d34c9ec499
Merged-In: I9e559a48b9a72e6ecbc3a277a09ea5d34c9ec499