On Thu, 9 Oct 2025 14:11:39 GMT, Yasumasa Suenaga <[email protected]> wrote:
> 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... I saw same issue in JDK 25 on Fedora Rawhide on Raspberry Pi 4. I will try to fix on AArch64. Server compiler detected. JVM version is 25+36-3489 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.aarch64.AARCH64Frame.senderForCompiledFrame(AARCH64Frame.java:414) at jdk.hotspot.agent/sun.jvm.hotspot.runtime.aarch64.AARCH64Frame.sender(AARCH64Frame.java:295) at jdk.hotspot.agent/sun.jvm.hotspot.runtime.Frame.sender(Frame.java:207) at jdk.hotspot.agent/sun.jvm.hotspot.runtime.Frame.realSender(Frame.java:212) 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) ----------------- 1884 ----------------- "ForkJoinPool-1-worker-4" #30 daemon prio=5 tid=0x0000ffff982c0ce0 nid=1884 runnable [0x0000ffff4d20b000] java.lang.Thread.State: RUNNABLE JavaThread state: _thread_in_native 0x0000ffffa03282e8 __syscall_cancel_arch + 0x28 0x0000ffffa0358b7c __clock_nanosleep + 0x3c 0x0000ffffa0363740 __GI___nanosleep + 0x20 0x0000ffffa0373f50 __sleep + 0x50 0x0000ffff87c4c878 <nep_invoker_blob> 0x0000ffff87b3b910 * java.lang.invoke.LambdaForm$MH+0x0000004001047000.invoke(java.lang.Object, long, int) bci:10 (Interpreted frame) 0x0000ffff87b3b910 * java.lang.invoke.LambdaForm$MH+0x000000400104fc00.invokeExact_MT(java.lang.Object, long, int, java.lang.Object) bci:21 (Interpreted frame) 0x0000ffff87b3b910 * jdk.internal.foreign.abi.DowncallStub+0x0000004001048000.invoke(java.lang.foreign.SegmentAllocator, java.lang.foreign.MemorySegment, int) bci:44 (Interpreted frame) 0x0000ffff87b3b910 * java.lang.invoke.DirectMethodHandle$Holder.invokeStatic(java.lang.Object, java.lang.Object, java.lang.Object, int) bci:14 (Interpreted frame) 0x0000ffff87b3b910 * java.lang.invoke.LambdaForm$MH+0x000000400104dc00.invoke(java.lang.Object, int) bci:44 (Interpreted frame) 0x0000ffff87b3ba90 * java.lang.invoke.LambdaForm$MH+0x000000400104c400.invoke_MT(java.lang.Object, int, java.lang.Object) bci:18 (Interpreted frame) 0x0000ffff87b3ba90 * Test.run() bci:21 line:28 (Interpreted frame) 0x0000ffff87b3a080 <StubRoutines (continuationstubs)> 0x0000ffff87b3ba90 <interpreter> return entry points 0x0000ffff87b3ba90 <interpreter> return entry points 0x0000ffff87b3ba90 <interpreter> return entry points 0x0000ffff87b3c030 <interpreter> return entry points 0x0000ffff87b3b820 <interpreter> return entry points 0x0000ffff87b3b820 <interpreter> return entry points 0x0000ffff87b3b910 <interpreter> return entry points 0x0000ffff87b3ba90 <interpreter> return entry points 0x0000ffff87b3ba90 <interpreter> return entry points 0x0000ffff87b3ba90 <interpreter> return entry points 0x0000ffff87b37154 <StubRoutines (initialstubs)> 0x0000ffff9f620198 JavaCalls::call_helper(JavaValue*, methodHandle const&, JavaCallArguments*, JavaThread*) + 0x248 0x0000ffff9f621824 JavaCalls::call_virtual(JavaValue*, Handle, Klass*, Symbol*, Symbol*, JavaThread*) + 0x174 0x0000ffff9f6fa7f8 thread_entry(JavaThread*, JavaThread*) + 0x8c 0x0000ffff9f639d88 JavaThread::thread_main_inner() [clone .part.0] + 0xa4 0x0000ffff9fbbc308 Thread::call_run() + 0xa8 0x0000ffff9fa006a8 thread_native_entry(Thread*) + 0xd8 0x0000ffffa031e8d4 start_thread + 0x404 ------------- PR Comment: https://git.openjdk.org/jdk/pull/27728#issuecomment-3392845921
