Commit 1543f547 authored Aug 11, 2025 by Alice Wang

watchdog: Dump virtualizationservice on ANR

When system_server makes a binder call into virtualizationservice, it
can hang, causing a system-wide ANR. The resulting backtrace in the
bugreport only shows that system_server is stuck in a binder
transaction, but provides no information on if or why
virtualizationservice is unresponsive.

To enable better debugging of these hangs, this change adds the
virtualizationservice process to the Watchdog's list of critical
processes to monitor. This ensures that when an ANR occurs, Watchdog
will dump the backtrace of virtualizationservice.

The corresponding SELinux permission is also added to allow
system_server to perform the dump on the virtualizationservice
process.

Flag: EXEMPT add AVF's core process to Watchdog
Bug: 430929909
Bug: 437843268
Test: m
Change-Id: I7294e28e0549144735bc3195e9dfcd9208c84c20

parent 4e2786de

services/core/java/com/android/server/Watchdog.java

+1 −0

Original line number	Diff line number	Diff line
		@@ -144,6 +144,7 @@ public class Watchdog implements Dumpable {
		"/apex/com.android.art/bin/artd", // ART daemon
		"/apex/com.android.compos/bin/composd", // CompOS daemon (lazy service)
		"/apex/com.android.os.statsd/bin/statsd", // Stats daemon
		"/apex/com.android.virt/bin/virtualizationservice", // Core process in AVF
		};

		public static final List<String> HAL_INTERFACES_OF_INTEREST = Arrays.asList(