On Thu, 5 Feb 2026 23:45:25 GMT, Yasumasa Suenaga <[email protected]> wrote:
>> [JDK-8374482](https://bugs.openjdk.org/browse/JDK-8374482) has introduced to >> treat signal trampoline. It realized to unwind problematic frame from signal >> trampoline. >> However it would fail if problematic frame is optimized by compiler - it >> means FDE (Frame Description Entry) of the function is NOP only. >> >> >> 00000018 0000000000000010 0000001c FDE cie=00000000 >> pc=0000000000000200..0000000000000206 >> DW_CFA_nop >> DW_CFA_nop >> DW_CFA_nop >> >> >> Actually we can see following stacks and exception as following in >> TestJhsdbJstackMixedCore.java: >> >> >> 0x00007f14d500204d os::abort(bool, void const*, void const*) [clone .co >> ld] + 0x4 >> 0x00007f14d6bd0001 VMError::report_and_die(int, char const*, char const >> *, __va_list_tag*, Thread*, unsigned char*, void const*, void const*, char c >> onst*, int, unsigned long) + 0x6f1 >> 0x00007f14d6bd07b9 VMError::report_and_die(Thread*, unsigned int, unsig >> ned char*, void const*, void const*, char const*, ...) + 0x88 >> 0x00007f14d6bd0818 VMError::report_and_die(Thread*, unsigned int, unsig >> ned char*, void const*, void const*) + 0x58 >> 0x00007f14d68ff1ba JVM_handle_linux_signal + 0x42a >> 0x00007f14d7964290 <signal handler called> >> 0x00007f14d780b3a0 Java_jdk_test_lib_apps_LingeredApp_crash >> 0x00007f14be7468ba >> ----------System.err:(20/1429)---------- >> java.lang.NullPointerException: Cannot invoke >> "sun.jvm.hotspot.debugger.Address.addOffsetTo(long)" because the return >> value of "sun.jvm.hotspot.runtime.Frame.getFP()" is null >> at >> jdk.hotspot.agent/sun.jvm.hotspot.runtime.Frame.addressOfStackSlot(Frame.java:255) >> at >> jdk.hotspot.agent/sun.jvm.hotspot.runtime.amd64.AMD64Frame.addressOfInterpreterFrameMethod(AMD64Frame.java:532) >> at >> jdk.hotspot.agent/sun.jvm.hotspot.runtime.Frame.getInterpreterFrameMethod(Frame.java:389) >> at >> jdk.hotspot.agent/sun.jvm.hotspot.runtime.InterpretedVFrame.getMethod(InterpretedVFrame.java:36) >> at >> jdk.hotspot.agent/sun.jvm.hotspot.tools.PStack.getJavaNames(PStack.java:251) >> at >> jdk.hotspot.agent/sun.jvm.hotspot.tools.PStack.run(PStack.java:135) >> 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.... > > Yasumasa Suenaga has updated the pull request incrementally with one > additional commit since the last revision: > > Update bugid in testcase Looks good. ------------- Marked as reviewed by cjplummer (Reviewer). PR Review: https://git.openjdk.org/jdk/pull/29398#pullrequestreview-3760015508
