ART: Fix Segment Fault with null owner while monitor logging is enabled
When the monitor inflates from thin to fat with the existing hashcode，
the owner is nullptr, which will cause segment fault with
owner->GetThreadId().
Change-Id: I90081d581a0ffd3d38763cc175fd2d7f66076747
diff --git a/runtime/monitor.cc b/runtime/monitor.cc
index 64edba8..53e4a6f 100644
--- a/runtime/monitor.cc
+++ b/runtime/monitor.cc
@@ -625,8 +625,13 @@
// Allocate and acquire a new monitor.
UniquePtr<Monitor> m(new Monitor(self, owner, obj, hash_code));
if (m->Install(self)) {
- VLOG(monitor) << "monitor: thread " << owner->GetThreadId()
- << " created monitor " << m.get() << " for object " << obj;
+ if (owner != nullptr) {
+ VLOG(monitor) << "monitor: thread" << owner->GetThreadId()
+ << " created monitor " << m.get() << " for object " << obj;
+ } else {
+ VLOG(monitor) << "monitor: Inflate with hashcode " << hash_code
+ << " created monitor " << m.get() << " for object " << obj;
+ }
Runtime::Current()->GetMonitorList()->Add(m.release());
CHECK_EQ(obj->GetLockWord(true).GetState(), LockWord::kFatLocked);
}