SEGV

gistfile1.txt

dogbert@dogbert-VirtualBox ~/repos/rakudo $ ./perl6-m -Ilib t/spec/S17-procasync/many-processes-no-close-stdin.t
1..1
Segmentation fault (core dumped)
dogbert@dogbert-VirtualBox ~/repos/rakudo $ gdb install/bin/moar core
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
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Reading symbols from install/bin/moar...done.
[New LWP 3110]
[New LWP 3107]
[New LWP 3108]
[New LWP 3112]
[New LWP 3106]
[New LWP 3109]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/home/dogbert/repos/rakudo/install/bin/moar --execname=/home/dogbert/repos/raku'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __pthread_mutex_unlock_usercnt (decr=1, mutex=0x0) at pthread_mutex_unlock.c:313
313	pthread_mutex_unlock.c: No such file or directory.
[Current thread is 1 (Thread 0x7f6de8c5d700 (LWP 3110))]
(gdb) bt
#0  __pthread_mutex_unlock_usercnt (decr=1, mutex=0x0) at pthread_mutex_unlock.c:313
#1  __GI___pthread_mutex_unlock (mutex=0x0) at pthread_mutex_unlock.c:314
#2  0x00007f6ded5f78fa in uv_mutex_unlock (mutex=0x0) at 3rdparty/libuv/src/unix/thread.c:330
#3  0x00007f6ded46731c in async_spawn_on_exit (req=0x7f6dd400d020, exit_status=0, term_signal=0) at src/io/procops.c:500
#4  0x00007f6ded5effc0 in uv__chld (handle=0x43826a8, signum=17) at 3rdparty/libuv/src/unix/process.c:109
#5  0x00007f6ded5f3202 in uv__signal_event (loop=0x4382440, w=0x4382670, events=1) at 3rdparty/libuv/src/unix/signal.c:468
#6  0x00007f6ded5dc472 in uv__io_poll (loop=0x4382440, timeout=-1) at 3rdparty/libuv/src/unix/linux-core.c:391
#7  0x00007f6ded5e5d92 in uv_run (loop=0x4382440, mode=UV_RUN_DEFAULT) at 3rdparty/libuv/src/unix/core.c:368
#8  0x00007f6ded45ffdf in enter_loop (tc=0x43c32d0, callsite=0x7f6deddb3540 <null_args_callsite>, args=0x0) at src/io/eventloop.c:90
#9  0x00007f6ded488933 in invoke_handler (tc=0x43c32d0, invokee=0x118c908, callsite=0x7f6deddb3540 <null_args_callsite>, args=0x0) at src/6model/reprs/MVMCFunction.c:9
#10 0x00007f6ded41c772 in thread_initial_invoke (tc=0x43c32d0, data=0x43ec9f0) at src/core/threads.c:59
#11 0x00007f6ded3d3648 in MVM_interp_run (tc=0x43c32d0, initial_invoke=0x7f6ded41c6e7 <thread_initial_invoke>, invoke_data=0x43ec9f0) at src/core/interp.c:137
#12 0x00007f6ded41c830 in start_thread (data=0x43ec9f0) at src/core/threads.c:87
#13 0x00007f6dec8fe6ba in start_thread (arg=0x7f6de8c5d700) at pthread_create.c:333
#14 0x00007f6decf2441d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
(gdb) f 3
#3  0x00007f6ded46731c in async_spawn_on_exit (req=0x7f6dd400d020, exit_status=0, term_signal=0) at src/io/procops.c:500
500	    uv_mutex_unlock(os_handle->body.mutex);
(gdb) p os_handle
$1 = (MVMOSHandle *) 0xfa8ba8
(gdb) p *os_handle
$2 = {common = {header = {sc_forward_u = {forwarder = 0x0, sc = {sc_idx = 0, idx = 0}, st = 0x0}, owner = 0, flags = 0, size = 0}, st = 0x0}, body = {ops = 0x0, data = 0x0, mutex = 0x0}}
(gdb)