(gdb) thread apply all bt Thread 26 (Thread 0x7f5059b10700 (LWP 47202)): #0 futex_wait_cancelable (private=0, expected=0, futex_word=0x5620045e2318) at ../sysdeps/unix/sysv/linux/futex-internal.h:80 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5620045e22c8, cond=0x5620045e22f0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x5620045e22f0, mutex=0x5620045e22c8) at pthread_cond_wait.c:638 #3 0x00007f505b8059fb in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #4 0x00007f505b805617 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #5 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #6 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 25 (Thread 0x7f505a311700 (LWP 47201)): #0 futex_wait_cancelable (private=0, expected=0, futex_word=0x5620045e2318) at ../sysdeps/unix/sysv/linux/futex-internal.h:80 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5620045e22c8, cond=0x5620045e22f0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x5620045e22f0, mutex=0x5620045e22c8) at pthread_cond_wait.c:638 #3 0x00007f505b8059fb in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #4 0x00007f505b805617 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #5 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #6 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 24 (Thread 0x7f505ab12700 (LWP 47200)): #0 futex_wait_cancelable (private=0, expected=0, futex_word=0x5620045e231c) at ../sysdeps/unix/sysv/linux/futex-internal.h:80 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5620045e22c8, cond=0x5620045e22f0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x5620045e22f0, mutex=0x5620045e22c8) at pthread_cond_wait.c:638 #3 0x00007f505b8059fb in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #4 0x00007f505b805617 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #5 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #6 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 23 (Thread 0x7f505b313700 (LWP 47199)): #0 futex_wait_cancelable (private=0, expected=0, futex_word=0x5620045e231c) at ../sysdeps/unix/sysv/linux/futex-internal.h:80 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5620045e22c8, cond=0x5620045e22f0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x5620045e22f0, mutex=0x5620045e22c8) at pthread_cond_wait.c:638 #3 0x00007f505b8059fb in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #4 0x00007f505b805617 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #5 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #6 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 22 (Thread 0x7f50a0645700 (LWP 47195)): #0 futex_abstimed_wait_cancelable (private=0, abstime=0x7f50a061f870, clockid=, expected=0, futex_word=0x7f50c068177c) at ../sysdeps/unix/sysv/linux/futex-internal.h:208 #1 __pthread_cond_wait_common (abstime=0x7f50a061f870, clockid=, mutex=0x7f50c0681728, cond=0x7f50c0681750) at pthread_cond_wait.c:520 #2 __pthread_cond_timedwait (cond=0x7f50c0681750, mutex=0x7f50c0681728, abstime=0x7f50a061f870) at pthread_cond_wait.c:656 #3 0x00007f50bba12f56 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bb9c7f99 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bb9c89b9 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bbb92481 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50bbb92529 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #8 0x00007f50bbb98474 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #9 0x00007f50bba0c01e in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #10 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #11 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 21 (Thread 0x7f508cffd700 (LWP 47194)): #0 futex_wait_cancelable (private=0, expected=0, futex_word=0x7f50c067f07c) at ../sysdeps/unix/sysv/linux/futex-internal.h:80 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f50c067f028, cond=0x7f50c067f050) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x7f50c067f050, mutex=0x7f50c067f028) at pthread_cond_wait.c:638 #3 0x00007f50bba154c3 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bb9c7ed8 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bb9c89b9 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bbac9321 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50bbb9d3bf in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #8 0x00007f50bbb9d790 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #9 0x00007f50bbb98474 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #10 0x00007f50bba0c01e in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #11 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #12 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 20 (Thread 0x7f508d7fe700 (LWP 47193)): #0 futex_abstimed_wait_cancelable (private=0, abstime=0x7f508d7d8130, clockid=, expected=0, futex_word=0x7f50c065f078) at ../sysdeps/unix/sysv/linux/futex-internal.h:208 #1 __pthread_cond_wait_common (abstime=0x7f508d7d8130, clockid=, mutex=0x7f50c065f028, cond=0x7f50c065f050) at pthread_cond_wait.c:520 #2 __pthread_cond_timedwait (cond=0x7f50c065f050, mutex=0x7f50c065f028, abstime=0x7f508d7d8130) at pthread_cond_wait.c:656 #3 0x00007f50bba12f56 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bb9e7a04 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bbb5b9b2 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bb751366 in JVM_MonitorWait () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50a37b271b in ?? () #8 0x0000000000000000 in ?? () Thread 19 (Thread 0x7f508dfff700 (LWP 47192)): #0 futex_abstimed_wait_cancelable (private=0, abstime=0x7f508dfd97d0, clockid=, expected=0, futex_word=0x7f50c0627b78) at ../sysdeps/unix/sysv/linux/futex-internal.h:208 #1 __pthread_cond_wait_common (abstime=0x7f508dfd97d0, clockid=, mutex=0x7f50c0627b28, cond=0x7f50c0627b50) at pthread_cond_wait.c:520 #2 __pthread_cond_timedwait (cond=0x7f50c0627b50, mutex=0x7f50c0627b28, abstime=0x7f508dfd97d0) at pthread_cond_wait.c:656 #3 0x00007f50bba12f56 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bb9c7f99 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bb9c89b9 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bbb53820 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50bbb9d3bf in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #8 0x00007f50bbb9d790 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #9 0x00007f50bbb98474 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #10 0x00007f50bba0c01e in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #11 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #12 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 18 (Thread 0x7f50a0777700 (LWP 47191)): #0 futex_abstimed_wait_cancelable (private=0, abstime=0x7f50a07516c0, clockid=, expected=0, futex_word=0x7f50c0625a7c) at ../sysdeps/unix/sysv/linux/futex-internal.h:208 #1 __pthread_cond_wait_common (abstime=0x7f50a07516c0, clockid=, mutex=0x7f50c0625a28, cond=0x7f50c0625a50) at pthread_cond_wait.c:520 #2 __pthread_cond_timedwait (cond=0x7f50c0625a50, mutex=0x7f50c0625a28, abstime=0x7f50a07516c0) at pthread_cond_wait.c:656 #3 0x00007f50bba12f56 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bb9c7f99 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bb9c8abe in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bb46d721 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50bb4706bf in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #8 0x00007f50bbb9d3bf in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #9 0x00007f50bbb9d790 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #10 0x00007f50bbb98474 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #11 0x00007f50bba0c01e in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #12 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #13 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 17 (Thread 0x7f50a0878700 (LWP 47190)): #0 futex_abstimed_wait_cancelable (private=0, abstime=0x7f50a08526c0, clockid=, expected=0, futex_word=0x7f50c062387c) at ../sysdeps/unix/sysv/linux/futex-internal.h:208 #1 __pthread_cond_wait_common (abstime=0x7f50a08526c0, clockid=, mutex=0x7f50c0623828, cond=0x7f50c0623850) at pthread_cond_wait.c:520 #2 __pthread_cond_timedwait (cond=0x7f50c0623850, mutex=0x7f50c0623828, abstime=0x7f50a08526c0) at pthread_cond_wait.c:656 #3 0x00007f50bba12f56 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bb9c7f99 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bb9c8abe in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bb46d721 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50bb4706bf in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #8 0x00007f50bbb9d3bf in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #9 0x00007f50bbb9d790 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #10 0x00007f50bbb98474 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #11 0x00007f50bba0c01e in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #12 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #13 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 16 (Thread 0x7f50ddc5e700 (LWP 47189)): #0 0x00007f50e8ce1fdf in __libc_accept (fd=21, addr=..., len=0x7f50ddc3877c) at ../sysdeps/unix/sysv/linux/accept.c:26 #1 0x00007f50bb2afcaf in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #2 0x00007f50bb2afe33 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #3 0x00007f50bb2ae9e5 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bbb9d3bf in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bbb9d790 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bbb98474 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50bba0c01e in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #8 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #9 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 15 (Thread 0x7f50dd45d700 (LWP 47188)): #0 futex_wait_cancelable (private=0, expected=0, futex_word=0x7f50c061d87c) at ../sysdeps/unix/sysv/linux/futex-internal.h:80 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f50c061d828, cond=0x7f50c061d850) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x7f50c061d850, mutex=0x7f50c061d828) at pthread_cond_wait.c:638 #3 0x00007f50bba154c3 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bb9e8125 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bbb5b9b2 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bb751366 in JVM_MonitorWait () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50a37b271b in ?? () #8 0x00007f50dd4373e0 in ?? () #9 0x00000000000000b6 in ?? () #10 0x00007f50c061c800 in ?? () #11 0x00007f50dd437388 in ?? () #12 0x0000000000000000 in ?? () Thread 14 (Thread 0x7f50dac5c700 (LWP 47187)): #0 futex_wait_cancelable (private=0, expected=0, futex_word=0x7f50c061bd7c) at ../sysdeps/unix/sysv/linux/futex-internal.h:80 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f50c061bd28, cond=0x7f50c061bd50) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x7f50c061bd50, mutex=0x7f50c061bd28) at pthread_cond_wait.c:638 #3 0x00007f50bba154c3 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bb9c7ed8 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bb9c8abe in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bb758d26 in JVM_WaitForReferencePendingList () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50a37b271b in ?? () #8 0x00007f50a37b2436 in ?? () #9 0x00007f50dac36448 in ?? () #10 0x0000000800516f30 in ?? () #11 0x00007f50dac364a8 in ?? () #12 0x0000000800009cd8 in ?? () #13 0x0000000000000000 in ?? () Thread 13 (Thread 0x7f50a097a700 (LWP 47186)): #0 futex_abstimed_wait_cancelable (private=0, abstime=0x7f50a0954620, clockid=, expected=0, futex_word=0x7f50c0618778) at ../sysdeps/unix/sysv/linux/futex-internal.h:208 #1 __pthread_cond_wait_common (abstime=0x7f50a0954620, clockid=, mutex=0x7f50c0618728, cond=0x7f50c0618750) at pthread_cond_wait.c:520 #2 __pthread_cond_timedwait (cond=0x7f50c0618750, mutex=0x7f50c0618728, abstime=0x7f50a0954620) at pthread_cond_wait.c:656 #3 0x00007f50bba12f56 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bb9c7f99 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bb9c89b9 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bbc0c442 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50bbc0cb72 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #8 0x00007f50bbb98474 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #9 0x00007f50bba0c01e in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #10 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #11 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 12 (Thread 0x7f50a1358700 (LWP 47185)): #0 futex_abstimed_wait_cancelable (private=0, abstime=0x7f50a1332880, clockid=, expected=0, futex_word=0x7f50c059e37c) at ../sysdeps/unix/sysv/linux/futex-internal.h:208 #1 __pthread_cond_wait_common (abstime=0x7f50a1332880, clockid=, mutex=0x7f50c059e328, cond=0x7f50c059e350) at pthread_cond_wait.c:520 #2 __pthread_cond_timedwait (cond=0x7f50c059e350, mutex=0x7f50c059e328, abstime=0x7f50a1332880) at pthread_cond_wait.c:656 #3 0x00007f50bba12f56 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bb9c7f99 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bb9c89b9 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bb5f31e1 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50bb483742 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #8 0x00007f50bbb98474 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #9 0x00007f50bba0c01e in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #10 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #11 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 11 (Thread 0x7f50a145a700 (LWP 47184)): #0 futex_wait_cancelable (private=0, expected=0, futex_word=0x7f50c059c57c) at ../sysdeps/unix/sysv/linux/futex-internal.h:80 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f50c059c528, cond=0x7f50c059c550) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x7f50c059c550, mutex=0x7f50c059c528) at pthread_cond_wait.c:638 #3 0x00007f50bba154c3 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bb9c7ed8 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bb9c89b9 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bb5ad084 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50bb483742 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #8 0x00007f50bbb98474 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #9 0x00007f50bba0c01e in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #10 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #11 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 10 (Thread 0x7f50a1960700 (LWP 47183)): #0 futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7f50c04ac140) at ../sysdeps/unix/sysv/linux/futex-internal.h:208 #1 do_futex_wait (sem=sem@entry=0x7f50c04ac140, abstime=0x0, clockid=0) at sem_waitcommon.c:112 #2 0x00007f50e8ce1098 in __new_sem_wait_slow (sem=0x7f50c04ac140, abstime=0x0, clockid=0) at sem_waitcommon.c:184 #3 0x00007f50bbac8b42 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bbc32ac5 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bbc31a41 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bbb98474 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50bba0c01e in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #8 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #9 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 9 (Thread 0x7f50a1a62700 (LWP 47182)): #0 futex_wait_cancelable (private=0, expected=0, futex_word=0x7f50c04abb7c) at ../sysdeps/unix/sysv/linux/futex-internal.h:80 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f50c04abb28, cond=0x7f50c04abb50) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x7f50c04abb50, mutex=0x7f50c04abb28) at pthread_cond_wait.c:638 #3 0x00007f50bba154c3 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bb9c7ed8 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bb9c89b9 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bb5aa563 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50bb483742 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #8 0x00007f50bbb98474 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #9 0x00007f50bba0c01e in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #10 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #11 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 8 (Thread 0x7f50a36b7700 (LWP 47181)): #0 futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7f50c044dbc0) at ../sysdeps/unix/sysv/linux/futex-internal.h:208 #1 do_futex_wait (sem=sem@entry=0x7f50c044dbc0, abstime=0x0, clockid=0) at sem_waitcommon.c:112 #2 0x00007f50e8ce1098 in __new_sem_wait_slow (sem=0x7f50c044dbc0, abstime=0x0, clockid=0) at sem_waitcommon.c:184 #3 0x00007f50bbac8b42 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #4 0x00007f50bbc32ac5 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #5 0x00007f50bbc31a41 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #6 0x00007f50bbb98474 in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #7 0x00007f50bba0c01e in ?? () from /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so #8 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #9 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 7 (Thread 0x7f50d0a29700 (LWP 47109)): #0 0x00007f50e8b484b2 in __GI___sigtimedwait (set=set@entry=0x7f50ea10bcc0 , info=info@entry=0x7f50d0a039e0, timeout=timeout@entry=0x0) at ../sysdeps/unix/sysv/linux/sigtimedwait.c:29 #1 0x00007f50e8ce2c5c in __sigwait (set=set@entry=0x7f50ea10bcc0 , sig=sig@entry=0x7f50d0a03a9c) at ../sysdeps/unix/sysv/linux/sigwait.c:28 #2 0x00007f50e9e68782 in signal_watcher (arg=0x7f50eaf88430 ) at /home/jwe/src/octave-stable/liboctave/wrappers/signal-wrappers.c:697 #3 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #4 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 6 (Thread 0x7f50d13a4700 (LWP 47108)): #0 0x00007f50e8c01023 in __GI___select (nfds=1, readfds=0x7f50d137dc50, writefds=0x0, exceptfds=0x7f50d137dcd0, timeout=0x7f50d137dc40) at ../sysdeps/unix/sysv/linux/select.c:41 #1 0x00007f50e2140850 in ?? () from /lib/x86_64-linux-gnu/libreadline.so.8 #2 0x00007f50e2140b6d in rl_read_key () from /lib/x86_64-linux-gnu/libreadline.so.8 #3 0x00007f50e21267ea in readline_internal_char () from /lib/x86_64-linux-gnu/libreadline.so.8 #4 0x00007f50e2127055 in readline () from /lib/x86_64-linux-gnu/libreadline.so.8 #5 0x00007f50e9e66ce5 in octave_rl_readline (prompt=) at /home/jwe/src/octave-stable/liboctave/util/oct-rl-edit.c:219 #6 0x00007f50e9e28efe in octave::gnu_readline::do_readline (this=, prompt=..., eof=@0x7f50d137e08f: false) at /home/jwe/src/octave-stable/liboctave/util/cmd-edit.cc:285 #7 0x00007f50e9e2ab9d in octave::command_editor::readline (prompt="octave:8> ", eof=@0x7f50d137e08f: false) at /home/jwe/src/octave-stable/liboctave/util/cmd-edit.cc:1196 #8 0x00007f50eae3926b in octave::input_system::gnu_readline (this=, s="octave:8> ", eof=@0x7f50d137e08f: false) at /home/jwe/src/octave-stable/libinterp/corefcn/input.cc:674 #9 0x00007f50eae3a0f3 in octave::input_system::interactive_input (this=0x7f50c0003558, s="octave:8> ", eof=@0x7f50d137e08f: false) at /home/jwe/src/octave-stable/libinterp/corefcn/input.cc:574 #10 0x00007f50eae3bed7 in octave::base_reader::octave_gets (this=0x7f50c03c50d0, prompt="octave:8> ", eof=@0x7f50d137e08f: false) at /home/jwe/src/octave-stable/libinterp/corefcn/input.cc:719 #11 0x00007f50eae3c3b0 in octave::terminal_reader::get_input (this=, prompt=..., eof=) at /home/jwe/src/octave-stable/libinterp/corefcn/input.cc:852 #12 0x00007f50eaae6efc in octave::input_reader::get_input (eof=@0x7f50d137e08f: false, prompt="octave:8> ", this=) at /usr/include/c++/8/bits/shared_ptr_base.h:1018 #13 octave::push_parser::run (this=0x7f50c01bab30) at /home/jwe/src/octave-stable/libinterp/parse-tree/oct-parse.yy:4779 #14 0x00007f50eae46a4e in octave::interpreter::main_loop (this=0x7f50c00032a0) at /home/jwe/src/octave-stable/libinterp/corefcn/interpreter.cc:1223 #15 0x00007f50eae4965f in octave::interpreter::execute (this=this@entry=0x7f50c00032a0) at /home/jwe/src/octave-stable/libinterp/corefcn/interpreter.cc:797 #16 0x00007f50eb560010 in octave::interpreter_qobject::execute (this=0x5620046b7680) at /home/jwe/src/octave-stable/libgui/src/interpreter-qobject.cc:87 #17 0x00007f50e72addea in QObject::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #18 0x00007f50e7c7ec32 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #19 0x00007f50e7c88190 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #20 0x00007f50eb59a213 in octave::octave_qapplication::notify (this=0x5620044f7d10, receiver=, ev=) at /home/jwe/src/octave-stable/libgui/src/octave-qobject.cc:136 #21 0x00007f50e7282a92 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #22 0x00007f50e7285688 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #23 0x00007f50e72d91c3 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #24 0x00007f50e15e6f2d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #25 0x00007f50e15e71b0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #26 0x00007f50e15e723f in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #27 0x00007f50e72d8801 in QEventDispatcherGlib::processEvents(QFlags) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #28 0x00007f50e728171b in QEventLoop::exec(QFlags) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #29 0x00007f50e70c2731 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #30 0x00007f50e70c38b2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #31 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #32 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 5 (Thread 0x7f50d1cd1700 (LWP 47106)): #0 0x00007f50e8bfeb4f in __GI___poll (fds=0x7f50bc00ed40, nfds=4, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f50e15e711e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f50e15e723f in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f50e72d8801 in QEventDispatcherGlib::processEvents(QFlags) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f50e728171b in QEventLoop::exec(QFlags) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f50e70c2731 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f50d5f504e6 in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5 #7 0x00007f50e70c38b2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #9 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 4 (Thread 0x7f50d27c4700 (LWP 47105)): #0 0x00007f50e8bfeb4f in __GI___poll (fds=0x5620045ebe50, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f50e15e711e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f50e15e7483 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f50d3804f36 in ?? () from /lib/x86_64-linux-gnu/libgio-2.0.so.0 #4 0x00007f50e160fd5d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #6 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 3 (Thread 0x7f50d2fc5700 (LWP 47104)): #0 0x00007f50e8bfeb4f in __GI___poll (fds=0x5620045d8940, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f50e15e711e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f50e15e723f in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f50e15e7291 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f50e160fd5d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #6 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 2 (Thread 0x7f50d50fe700 (LWP 47103)): #0 0x00007f50e8bfeb4f in __GI___poll (fds=0x7f50d50d8928, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f50e0597cf2 in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007f50e05998ea in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007f50d6043ca0 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 #4 0x00007f50e70c38b2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f50e8cd7f27 in start_thread (arg=) at pthread_create.c:479 #6 0x00007f50e8c092ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 1 (Thread 0x7f50ddc97b80 (LWP 46971)): #0 0x00007f50e8bfeb4f in __GI___poll (fds=0x5620046240b0, nfds=5, timeout=21307) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f50e15e711e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f50e15e723f in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f50e72d8801 in QEventDispatcherGlib::processEvents(QFlags) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f50e728171b in QEventLoop::exec(QFlags) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f50e72891c2 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f50eb5a3d7d in octave::qt_application::execute (this=this@entry=0x7ffef42287f0) at /home/jwe/src/octave-stable/libgui/src/qt-application.cc:73 #7 0x00005620035f4396 in main (argc=8, argv=0x7ffef4228b08) at /home/jwe/src/octave-stable/src/main-gui.cc:106