commit 2b0f586825206b3614c617f841b48755f455adfc
author Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> Thu Mar 05 12:25:24 2020 +0000
committer Mark Chien <markchien@google.com> Mon Mar 09 02:45:05 2020 +0000
tree ad89d887cec36edcc5824844c491354331c93d61
parent aa65d7148a51fc2d625feb6a74a5bf963ae07273

Don't check MAINLINE_NETWORK_STACK permission for network stack

Checking permissions requires a binder IPC to the system server.
There is cross process dead lock due to binder thread exhaustion.
1. Nework stack fired a IPC to netd.
2. Netd reqired binder IPC to check permission but no free binder
thread.
3. System server is waiting the resulting call in netd.

Fix this by not checking mainline_network_stack permission if the
caller is network stack.

Bug: 149766727
Test: ON/OFF hotspot

Change-Id: I8af7d4d2ff31b7a1ab4aa56070eecf893ace81d4
Merged-In: I8af7d4d2ff31b7a1ab4aa56070eecf893ace81d4
Merged-In: I9715fa0cb7c1157d134279717222dadedf0268c5
(cherry picked from commit 6eb4fb43cff2e55eb61712b08335f0a5f42b1990)