archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-28 07:14:30 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8218851: JVM crash in custom classloader stress test, JDK 12 & 13

Browse source 
Handle NULL and unloaded constraint class in loader constraint table, also cope with unloaded but not cleaned out klass in loader constraint entries.

Reviewed-by: hseigel, huntch, stuefe
This commit is contained in:
Coleen Phillimore 2019-02-15 08:21:08 -05:00
parent bec8431683
commit d869d9287f
2 changed files with 6 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/hotspot/share/classfile/systemDictionary.cpp
View file

@ -2114,7 +2114,7 @@ void SystemDictionary::check_constraints(unsigned int d_hash,
ss.print(" wants to load %s %s.",
k->external_kind(), k->external_name());
Klass *existing_klass = constraints()->find_constrained_klass(name, class_loader);
if (existing_klass->class_loader() != class_loader()) {
if (existing_klass != NULL && existing_klass->class_loader() != class_loader()) {
ss.print(" A different %s with the same name was previously loaded by %s. (%s)",
existing_klass->external_kind(),
existing_klass->class_loader_data()->loader_name_and_id(),