8271863: ProblemList serviceability/sa/TestJmapCore.java on linux-x64 with ZGC

Backport-of: a007cb1a1dd6a716555031c271cb11f4980813e7
diff --git a/test/hotspot/jtreg/ProblemList-zgc.txt b/test/hotspot/jtreg/ProblemList-zgc.txt
index c4528fe..d81f604 100644
--- a/test/hotspot/jtreg/ProblemList-zgc.txt
+++ b/test/hotspot/jtreg/ProblemList-zgc.txt
@@ -38,7 +38,7 @@
 serviceability/sa/ClhsdbFindPC.java#id3                       8268722   macosx-x64
 serviceability/sa/ClhsdbPmap.java#id1                         8268722   macosx-x64
 serviceability/sa/ClhsdbPstack.java#id1                       8268722   macosx-x64
-serviceability/sa/TestJmapCore.java                           8268722,8268283   macosx-x64,linux-aarch64
+serviceability/sa/TestJmapCore.java                           8268722,8268283,8270202   macosx-x64,linux-aarch64,linux-x64
 serviceability/sa/TestJmapCoreMetaspace.java                  8268722,8268636   generic-all
 
 serviceability/sa/TestJhsdbJstackMixed.java                   8248912   generic-all