GC error in t/spec/S17-procasync/stress.t (test 24)

gistfile1.txt

[Detaching after fork from child process 469995]
[Detaching after fork from child process 469996]
[Detaching after fork from child process 469997]
[Detaching after fork from child process 469998]
[Detaching after fork from child process 469999]
[Switching to Thread 0x7ffff2e22700 (LWP 469841)]

Thread 5 "async io thread" hit Breakpoint 1, MVM_panic (exitCode=0, messageFormat=0x0) at src/core/exceptions.c:844
844	MVM_NO_RETURN void MVM_panic(MVMint32 exitCode, const char *messageFormat, ...) {
(gdb) bt
#0  MVM_panic (exitCode=0, messageFormat=0x0) at src/core/exceptions.c:844
#1  0x00007ffff78b2e88 in MVM_VMArray_push (tc=0x555558939e50, st=0x5555555b6f00, root=0x55555893a1b0, data=0x55555893a1c8, value=..., kind=8) at src/6model/reprs/VMArray.c:491
#2  0x00007ffff78a72cb in MVM_repr_push_o (tc=0x555558939e50, obj=0x55555893a1b0, pushee=0x55555555eff8) at src/6model/reprconv.c:387
#3  0x00007ffff78990be in setup (tc=0x555558939e50, loop=0x5555586e39f0, async_task=0x5555556acec8, data=0x555556cdb670) at src/io/signals.c:51
#4  0x00007ffff788c043 in setup_work (tc=0x555558939e50) at src/io/eventloop.c:18
#5  0x00007ffff788c514 in async_handler (handle=0x55555861f090) at src/io/eventloop.c:76
#6  0x00007ffff7a0bb42 in uv__async_io (loop=0x5555586e39f0, w=0x5555586e3bb8, events=1) at 3rdparty/libuv/src/unix/async.c:163
#7  0x00007ffff7a03414 in uv__io_poll (loop=0x5555586e39f0, timeout=3752) at 3rdparty/libuv/src/unix/linux-core.c:462
#8  0x00007ffff7a0c60b in uv_run (loop=0x5555586e39f0, mode=UV_RUN_DEFAULT) at 3rdparty/libuv/src/unix/core.c:385
#9  0x00007ffff788c59d in enter_loop (tc=0x555558939e50, callsite=0x7ffff7fc77a0 <null_args_callsite>, args=0x0) at src/io/eventloop.c:94
#10 0x00007ffff78b9069 in invoke_handler (tc=0x555558939e50, invokee=0x5555556ad208, callsite=0x7ffff7fc77a0 <null_args_callsite>, args=0x0) at src/6model/reprs/MVMCFunction.c:9
#11 0x00007ffff784890b in thread_initial_invoke (tc=0x555558939e50, data=0x55555895f200) at src/core/threads.c:58
#12 0x00007ffff77f6f71 in MVM_interp_run (tc=0x555558939e50, initial_invoke=0x7ffff784887c <thread_initial_invoke>, invoke_data=0x55555895f200, outer_runloop=0x0) at src/core/interp.c:159
#13 0x00007ffff78489e0 in start_thread (data=0x55555895f200) at src/core/threads.c:91
#14 0x00007ffff7284609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#15 0x00007ffff750f293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) c
Continuing.
MoarVM panic: Collectable 0x55555555eff8 in fromspace accessed
[Thread 0x7ffff2621700 (LWP 469843) exited]
[Thread 0x7ffff1e1e700 (LWP 469844) exited]
[Thread 0x7ffff2e22700 (LWP 469841) exited]
[Thread 0x7ffff3623700 (LWP 469840) exited]
[Thread 0x7ffff3e24700 (LWP 469839) exited]
[Thread 0x7ffff7230700 (LWP 469838) exited]
[Inferior 1 (process 469837) exited with code 01]
(gdb)