On Sat, 3 Jan 2026 10:22:25 GMT, Yasumasa Suenaga <[email protected]> wrote:
> SA does not handle signal handler frame in mixed jstack as following: > > > ----------------- 1789 ----------------- > "main" #1 prio=5 tid=0x00007f654c010000 nid=0x6fd runnable > [0x00007f6551c0b000] > java.lang.Thread.State: RUNNABLE > JavaThread state: _thread_in_native > 0x00007f6551c0e735 __GI_abort + 0x8b > 0x00007f65511feb39 _ZN2os5abortEbPvPKv + 0x19 > 0x00007f6551427569 > _ZN7VMError14report_and_dieEiPKcS1_P13__va_list_tagP6ThreadPhPvS7_S1_im + > 0x579 > 0x00007f6551427deb _ZN7VMError14report_and_dieEP6ThreadjPhPvS3_PKcz + 0x8b > 0x00007f6551427e1e _ZN7VMError14report_and_dieEP6ThreadjPhPvS3_ + 0x1e > 0x00007f6551209950 JVM_handle_linux_signal + 0x1c0 > 0x00007f65511fd538 _ZL13signalHandleriP7siginfoPv + 0x38 > 0x00007f6551c27290 ???????? > 0x00007f653400f890 * NativeSEGV.doSEGV() bci:0 (Interpreted frame) > 0x00007f6534009c43 * NativeSEGV.main(java.lang.String[]) bci:76 line:37 > (Interpreted frame) > 0x00007f6534000849 <StubRoutines> > 0x00007f6550e847e9 > _ZN9JavaCalls11call_helperEP9JavaValueRK12methodHandleP17JavaCallArgumentsP6Thread > + 0x3b9 > 0x00007f6550eff1ba > _ZL17jni_invoke_staticP7JNIEnv_P9JavaValueP8_jobject11JNICallTypeP10_jmethodIDP18JNI_ArgumentPusherP6Thread.isra.65.constprop.193 > + 0x1ba > 0x00007f6550f01824 jni_CallStaticVoidMethod + 0x164 > 0x00007f6551e0582d JavaMain + 0xe4d > 0x00007f6551c7f464 start_thread + 0x2e4 > > 0x7f6551c27290 is a signal handler frame, and its caller is native frame. > However jstack reports the caller is Java frame (`NativeSEGV.doSEGV()`). > > It should be like following: > > > 0x00007fdbd170321a JVM_handle_linux_signal + 0x42a > 0x00007fdbd267b290 <signal handler called> > 0x00007fdbc7ecb3b1 Java_NativeSEGV_doSEGV + 0x18 > 0x00007fdbb67468ba * NativeSEGV.doSEGV() bci:0 (Interpreted frame) > > > This is long standing bug (since JDK 9 at least). This pull request has now been integrated. Changeset: a3b1aa9f Author: Yasumasa Suenaga <[email protected]> URL: https://git.openjdk.org/jdk/commit/a3b1aa9f7dce30a1c5967cb15a5d523e3d7ea72d Stats: 189 lines in 6 files changed: 179 ins; 1 del; 9 mod 8374482: SA does not handle signal handler frame in mixed jstack Reviewed-by: cjplummer, kevinw ------------- PR: https://git.openjdk.org/jdk/pull/29023
