46 lines
1.5 KiB
Diff
46 lines
1.5 KiB
Diff
From e546db5e9c81fabace719417cc77154e08355005 Mon Sep 17 00:00:00 2001
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Date: Fri, 22 Jan 2021 11:37:38 +0800
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Subject: Backport of JDK-8131600
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Summary: JVM crashes when doing heapdump and handling a signal at a same time
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LLT: none
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Bug url: https://bugs.openjdk.java.net/browse/JDK-8131600
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---
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hotspot/src/share/vm/prims/jvmtiTagMap.cpp | 2 +-
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hotspot/src/share/vm/services/heapDumper.cpp | 5 +++++
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2 files changed, 6 insertions(+), 1 deletion(-)
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diff --git a/hotspot/src/share/vm/prims/jvmtiTagMap.cpp b/hotspot/src/share/vm/prims/jvmtiTagMap.cpp
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index 224cd21ad..dc600d8ea 100644
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--- a/hotspot/src/share/vm/prims/jvmtiTagMap.cpp
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+++ b/hotspot/src/share/vm/prims/jvmtiTagMap.cpp
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@@ -2829,7 +2829,7 @@ inline bool VM_HeapWalkOperation::iterate_over_class(oop java_class) {
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if (klass->oop_is_instance()) {
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InstanceKlass* ik = InstanceKlass::cast(klass);
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- // ignore the class if it's has been initialized yet
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+ // Ignore the class if it hasn't been initialized yet
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if (!ik->is_linked()) {
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return true;
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}
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diff --git a/hotspot/src/share/vm/services/heapDumper.cpp b/hotspot/src/share/vm/services/heapDumper.cpp
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index e9fd8946a..24c0830c5 100644
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--- a/hotspot/src/share/vm/services/heapDumper.cpp
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+++ b/hotspot/src/share/vm/services/heapDumper.cpp
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@@ -990,6 +990,11 @@ void DumperSupport::dump_class_and_array_classes(DumpWriter* writer, Klass* k) {
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return;
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}
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+ // Ignore the class if it hasn't been initialized yet
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+ if (!ik->is_linked()) {
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+ return;
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+ }
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+
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writer->write_u1(HPROF_GC_CLASS_DUMP);
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// class ID
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--
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2.19.0
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