> I tried to get mixed thread dump of the application which runs virtual > threads (see [Test.java on > JBS](https://bugs.openjdk.org/secure/attachment/116453/Test.java)) via `jhsdb > jstack --mixed`, then I got following message: > > > sun.jvm.hotspot.utilities.AssertionFailure: must have non-zero frame size > at > jdk.hotspot.agent/sun.jvm.hotspot.utilities.Assert.that(Assert.java:32) > at > jdk.hotspot.agent/sun.jvm.hotspot.runtime.x86.X86Frame.senderForCompiledFrame(X86Frame.java:374) > at > jdk.hotspot.agent/sun.jvm.hotspot.runtime.x86.X86Frame.sender(X86Frame.java:273) > at > jdk.hotspot.agent/sun.jvm.hotspot.runtime.Frame.sender(Frame.java:225) > at > jdk.hotspot.agent/sun.jvm.hotspot.runtime.Frame.realSender(Frame.java:230) > at > jdk.hotspot.agent/sun.jvm.hotspot.runtime.VFrame.sender(VFrame.java:120) > at > jdk.hotspot.agent/sun.jvm.hotspot.runtime.VFrame.javaSender(VFrame.java:150) > at > jdk.hotspot.agent/sun.jvm.hotspot.tools.PStack.initJFrameCache(PStack.java:224) > at jdk.hotspot.agent/sun.jvm.hotspot.tools.PStack.run(PStack.java:73) > at jdk.hotspot.agent/sun.jvm.hotspot.tools.PStack.run(PStack.java:65) > at jdk.hotspot.agent/sun.jvm.hotspot.tools.PStack.run(PStack.java:60) > at jdk.hotspot.agent/sun.jvm.hotspot.tools.JStack.run(JStack.java:67) > at > jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:278) > at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.start(Tool.java:241) > at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.execute(Tool.java:134) > at > jdk.hotspot.agent/sun.jvm.hotspot.tools.JStack.runWithArgs(JStack.java:90) > at > jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.runJSTACK(SALauncher.java:306) > at > jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:507) > > > And also I got following (strange) stacks which causes `AssersionFailure` in > above: > > > ----------------- 70094 ----------------- > "ForkJoinPool-1-worker-4" #32 daemon prio=5 tid=0x00007f8f5c371660 nid=70094 > runnable [0x00007f8f406d9000] > java.lang.Thread.State: RUNNABLE > JavaThread state: _thread_in_native > 0x00007f8f64658462 __syscall_cancel_arch + 0x32 > 0x00007f8f6464c75c __internal_syscall_cancel + 0x5c > 0x00007f8f646a8c37 __GI___nanosleep + 0x17 > 0x00007f8f646bb14e __sleep + 0x3e > 0x00007f8f4b3a8e1e <nep_invoker_blob> > 0x00007f8f4b33fe48 * > java.lang.invoke.LambdaForm$MH+0x000000000c047000.invoke(java.lang.Object, > long, int) bci:10 (Interpreted frame) > 0x00007f8f4b33fe48...
Yasumasa Suenaga has updated the pull request incrementally with one additional commit since the last revision: Add testcase ------------- Changes: - all: https://git.openjdk.org/jdk/pull/27728/files - new: https://git.openjdk.org/jdk/pull/27728/files/2f3eee62..915fca8d Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=27728&range=03 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27728&range=02-03 Stats: 159 lines in 2 files changed: 159 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/27728.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/27728/head:pull/27728 PR: https://git.openjdk.org/jdk/pull/27728
