Freeze when using Object.ray_cast in a driver script #85641

New Issue

Amelia · 2021-02-15T02:57:18+01:00

Amelia commented

2021-02-15 02:57:18 +01:00

System Information
Operating system: Linux-5.10.15-1-MANJARO-x86_64-with-arch-Manjaro-Linux 64 Bits
Graphics card: Radeon RX 580 Series (POLARIS10, DRM 3.40.0, 5.10.15-1-MANJARO, LLVM 11.0.1) AMD 4.6 (Core Profile) Mesa 20.3.4

Blender Version
Broken: version: 2.91.2, branch: master, commit date: 2021-01-19 16:15, hash: 5be9ef4177, 8dc95f61f3
Worked: Unknown, fails on at least as old as 2.83.10.

Short description of error
Running a driver that includes a call to Object.ray_cast will freeze the interface entirely. Still exits normally when sent a SIGTERM. It does not create a crash.txt. Blender crashes with a segmentation fault in version 2.83.10 (hash: b439a155442b), and does create a crash.txt (see attached). Blender version 2.93.0 Alpha (hash: 7a608f88a713) also freezes in the same way as 2.91.2. Using the ray_cast function in a non-driver script appears to function as expected.

Exact steps for others to reproduce the error
In the attached blend file, run the text block TurretRayCasting.py, to put the script into the driver namespace. Next, click "update dependencies" in the driver panel. The application should freeze entirely. If return target.ray_cast(turretTargetSpace, direction)- [x] is commented out and replaced with return True, the application does not freeze.

driver_freeze2.blend

driver_freeze2.crash.txt

system-info-2.91.2.txt

**System Information** Operating system: Linux-5.10.15-1-MANJARO-x86_64-with-arch-Manjaro-Linux 64 Bits Graphics card: Radeon RX 580 Series (POLARIS10, DRM 3.40.0, 5.10.15-1-MANJARO, LLVM 11.0.1) AMD 4.6 (Core Profile) Mesa 20.3.4 **Blender Version** Broken: version: 2.91.2, branch: master, commit date: 2021-01-19 16:15, hash: `5be9ef4177`, 8dc95f61f3 Worked: Unknown, fails on at least as old as 2.83.10. **Short description of error** Running a driver that includes a call to Object.ray_cast will freeze the interface entirely. Still exits normally when sent a SIGTERM. It does not create a crash.txt. Blender crashes with a segmentation fault in version 2.83.10 (hash: `b439a155442b`), and does create a crash.txt (see attached). Blender version 2.93.0 Alpha (hash: `7a608f88a713`) also freezes in the same way as 2.91.2. Using the ray_cast function in a non-driver script appears to function as expected. **Exact steps for others to reproduce the error** In the attached blend file, run the text block `TurretRayCasting.py`, to put the script into the driver namespace. Next, click "update dependencies" in the driver panel. The application should freeze entirely. If `return target.ray_cast(turretTargetSpace, direction)- [x]` is commented out and replaced with `return True`, the application does not freeze. [driver_freeze2.blend](https://archive.blender.org/developer/F9802556/driver_freeze2.blend) [driver_freeze2.crash.txt](https://archive.blender.org/developer/F9802557/driver_freeze2.crash.txt) [system-info-2.91.2.txt](https://archive.blender.org/developer/F9802572/system-info-2.91.2.txt)

Amelia commented

2021-02-15 02:57:18 +01:00

Added subscriber: @StarshipRobo

Ankit Meel commented

2021-05-14 16:29:23 +02:00

Added subscriber: @ankitm

Ankit Meel commented

2021-05-14 16:29:23 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Ankit Meel commented

2021-05-14 16:29:23 +02:00

- 0   in __psynch_cvwait ()
- 1   in _pthread_cond_wait ()
- 2   in PyCOND_TIMEDWAIT [inlined] at /python/src/external_python/Python/condvar.h:73
- 3   in take_gil at /python/src/external_python/Python/ceval_gil.h:247
- 4   in PyEval_RestoreThread at /python/src/external_python/Python/ceval.c:467
- 5   in PyGILState_Ensure at /python/src/external_python/Python/pystate.c:1378
- 6   in BPY_DECREF at source/blender/python/intern/bpy_interface.c:617
- 7   in fcurve_free_driver at source/blender/blenkernel/intern/fcurve_driver.c:930
- 8   in BKE_fcurve_free at source/blender/blenkernel/intern/fcurve.c:95
- 9   in BKE_fcurves_free at source/blender/blenkernel/intern/fcurve.c:118
- 10  in BKE_animdata_free at source/blender/blenkernel/intern/anim_data.c:256
- 11  in BKE_libblock_free_data at source/blender/blenkernel/intern/lib_id_delete.c:72
- 12  in blender::deg::deg_free_copy_on_write_datablock(ID*) at source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.cc:1080
- 13  in blender::deg::deg_update_copy_on_write_datablock(blender::deg::Depsgraph const*, blender::deg::IDNode const*) at source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.cc:958
- 14  in blender::deg::deg_evaluate_copy_on_write(Depsgraph*, blender::deg::IDNode const*) at source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.cc:1094
- 15  in blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0::operator()(Depsgraph*) const at source/blender/depsgraph/intern/builder/deg_builder_nodes.cc:181
- 16  in decltype(std::__1::forward<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0&>(fp)(std::__1::forward<Depsgraph*>(fp0))) std::__1::__invoke<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0&, Depsgraph*>(blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0&, Depsgraph*&&) at /usr/include/c++/v1/type_traits:3904
- 17  in void std::__1::__invoke_void_return_wrapper<void, true>::__call<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0&, Depsgraph*>(blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0&, Depsgraph*&&) at /usr/include/c++/v1/__functional_base:348
- 18  in std::__1::__function::__alloc_func<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0, std::__1::allocator<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0>, void (Depsgraph*)>::operator()(Depsgraph*&&) at /usr/include/c++/v1/functional:1561
- 19  in std::__1::__function::__func<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0, std::__1::allocator<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0>, void (Depsgraph*)>::operator()(Depsgraph*&&) at /usr/include/c++/v1/functional:1735
- 20  in std::__1::__function::__value_func<void (Depsgraph*)>::operator()(Depsgraph*&&) const at /usr/include/c++/v1/functional:1888
- 21  in std::__1::function<void (Depsgraph*)>::operator()(Depsgraph*) const at /usr/include/c++/v1/functional:2563
- 22  in blender::deg::(anonymous namespace)::evaluate_node(blender::deg::(anonymous namespace)::DepsgraphEvalState const*, blender::deg::OperationNode*) at source/blender/depsgraph/intern/eval/deg_eval.cc:113
- 23  in blender::deg::(anonymous namespace)::deg_task_run_func(TaskPool*, void*) at source/blender/depsgraph/intern/eval/deg_eval.cc:124
- 24  in Task::operator()() const::'lambda'()::operator()() const at source/blender/blenlib/intern/task_pool.cc:118
- 25  in tbb::interface7::internal::delegated_function<Task::operator()() const::'lambda'() const, void>::operator()() const at darwin/tbb/include/tbb/task_arena.h:96
- 26  in tbb::interface7::internal::isolate_within_arena(tbb::interface7::internal::delegate_base&, long) ()
- 27  in void tbb::interface7::internal::isolate_impl<void, Task::operator()() const::'lambda'() const>(Task::operator()() const::'lambda'() const&) at darwin/tbb/include/tbb/task_arena.h:216
- 28  in tbb::interface7::internal::return_type_or_void<Task::operator()() const::'lambda'()>::type tbb::interface7::this_task_arena::isolate<Task::operator()() const::'lambda'()>(Task::operator()() const::'lambda'() const&) at darwin/tbb/include/tbb/task_arena.h:472
- 29  in Task::operator()() const at source/blender/blenlib/intern/task_pool.cc:118
- 30  in tbb::internal::function_task<Task>::execute() at darwin/tbb/include/tbb/task.h:1059
- 31  in tbb::internal::custom_scheduler<tbb::internal::IntelSchedulerTraits>::process_bypass_loop(tbb::internal::context_guard_helper<false>&, tbb::task*, long) ()
- 32  in tbb::internal::custom_scheduler<tbb::internal::IntelSchedulerTraits>::local_wait_for_all(tbb::task&, tbb::task*) ()
- 33  in tbb::internal::task_group_base::wait() ()
- 34  in tbb_task_pool_work_and_wait(TaskPool*) at source/blender/blenlib/intern/task_pool.cc:253
- 35  in ::BLI_task_pool_work_and_wait(TaskPool *) at source/blender/blenlib/intern/task_pool.cc:502
- 36  in blender::deg::deg_evaluate_on_refresh(blender::deg::Depsgraph*) at source/blender/depsgraph/intern/eval/deg_eval.cc:397
- 37  in deg_flush_updates_and_refresh(blender::deg::Depsgraph*) at source/blender/depsgraph/intern/depsgraph_eval.cc:58
- 38  in ::DEG_evaluate_on_framechange(Depsgraph *, float) at source/blender/depsgraph/intern/depsgraph_eval.cc:82
- 39  in BKE_scene_graph_update_for_newframe_ex at source/blender/blenkernel/intern/scene.c:2738
- 40  in BKE_scene_graph_update_for_newframe at source/blender/blenkernel/intern/scene.c:2786
- 41  in ED_update_for_newframe at source/blender/editors/screen/screen_edit.c:1764
- 42  in wm_event_do_notifiers at source/blender/windowmanager/intern/wm_event_system.c:535
- 43  in WM_main at source/blender/windowmanager/intern/wm.c:650
- 44  in main at source/creator/creator.c:519
- 45  in start ()
#46  in start ()

It's stuck at

```lines=15 - 0 in __psynch_cvwait () - 1 in _pthread_cond_wait () - 2 in PyCOND_TIMEDWAIT [inlined] at /python/src/external_python/Python/condvar.h:73 - 3 in take_gil at /python/src/external_python/Python/ceval_gil.h:247 - 4 in PyEval_RestoreThread at /python/src/external_python/Python/ceval.c:467 - 5 in PyGILState_Ensure at /python/src/external_python/Python/pystate.c:1378 - 6 in BPY_DECREF at source/blender/python/intern/bpy_interface.c:617 - 7 in fcurve_free_driver at source/blender/blenkernel/intern/fcurve_driver.c:930 - 8 in BKE_fcurve_free at source/blender/blenkernel/intern/fcurve.c:95 - 9 in BKE_fcurves_free at source/blender/blenkernel/intern/fcurve.c:118 - 10 in BKE_animdata_free at source/blender/blenkernel/intern/anim_data.c:256 - 11 in BKE_libblock_free_data at source/blender/blenkernel/intern/lib_id_delete.c:72 - 12 in blender::deg::deg_free_copy_on_write_datablock(ID*) at source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.cc:1080 - 13 in blender::deg::deg_update_copy_on_write_datablock(blender::deg::Depsgraph const*, blender::deg::IDNode const*) at source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.cc:958 - 14 in blender::deg::deg_evaluate_copy_on_write(Depsgraph*, blender::deg::IDNode const*) at source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.cc:1094 - 15 in blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0::operator()(Depsgraph*) const at source/blender/depsgraph/intern/builder/deg_builder_nodes.cc:181 - 16 in decltype(std::__1::forward<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0&>(fp)(std::__1::forward<Depsgraph*>(fp0))) std::__1::__invoke<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0&, Depsgraph*>(blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0&, Depsgraph*&&) at /usr/include/c++/v1/type_traits:3904 - 17 in void std::__1::__invoke_void_return_wrapper<void, true>::__call<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0&, Depsgraph*>(blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0&, Depsgraph*&&) at /usr/include/c++/v1/__functional_base:348 - 18 in std::__1::__function::__alloc_func<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0, std::__1::allocator<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0>, void (Depsgraph*)>::operator()(Depsgraph*&&) at /usr/include/c++/v1/functional:1561 - 19 in std::__1::__function::__func<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0, std::__1::allocator<blender::deg::DepsgraphNodeBuilder::add_id_node(ID*)::$_0>, void (Depsgraph*)>::operator()(Depsgraph*&&) at /usr/include/c++/v1/functional:1735 - 20 in std::__1::__function::__value_func<void (Depsgraph*)>::operator()(Depsgraph*&&) const at /usr/include/c++/v1/functional:1888 - 21 in std::__1::function<void (Depsgraph*)>::operator()(Depsgraph*) const at /usr/include/c++/v1/functional:2563 - 22 in blender::deg::(anonymous namespace)::evaluate_node(blender::deg::(anonymous namespace)::DepsgraphEvalState const*, blender::deg::OperationNode*) at source/blender/depsgraph/intern/eval/deg_eval.cc:113 - 23 in blender::deg::(anonymous namespace)::deg_task_run_func(TaskPool*, void*) at source/blender/depsgraph/intern/eval/deg_eval.cc:124 - 24 in Task::operator()() const::'lambda'()::operator()() const at source/blender/blenlib/intern/task_pool.cc:118 - 25 in tbb::interface7::internal::delegated_function<Task::operator()() const::'lambda'() const, void>::operator()() const at darwin/tbb/include/tbb/task_arena.h:96 - 26 in tbb::interface7::internal::isolate_within_arena(tbb::interface7::internal::delegate_base&, long) () - 27 in void tbb::interface7::internal::isolate_impl<void, Task::operator()() const::'lambda'() const>(Task::operator()() const::'lambda'() const&) at darwin/tbb/include/tbb/task_arena.h:216 - 28 in tbb::interface7::internal::return_type_or_void<Task::operator()() const::'lambda'()>::type tbb::interface7::this_task_arena::isolate<Task::operator()() const::'lambda'()>(Task::operator()() const::'lambda'() const&) at darwin/tbb/include/tbb/task_arena.h:472 - 29 in Task::operator()() const at source/blender/blenlib/intern/task_pool.cc:118 - 30 in tbb::internal::function_task<Task>::execute() at darwin/tbb/include/tbb/task.h:1059 - 31 in tbb::internal::custom_scheduler<tbb::internal::IntelSchedulerTraits>::process_bypass_loop(tbb::internal::context_guard_helper<false>&, tbb::task*, long) () - 32 in tbb::internal::custom_scheduler<tbb::internal::IntelSchedulerTraits>::local_wait_for_all(tbb::task&, tbb::task*) () - 33 in tbb::internal::task_group_base::wait() () - 34 in tbb_task_pool_work_and_wait(TaskPool*) at source/blender/blenlib/intern/task_pool.cc:253 - 35 in ::BLI_task_pool_work_and_wait(TaskPool *) at source/blender/blenlib/intern/task_pool.cc:502 - 36 in blender::deg::deg_evaluate_on_refresh(blender::deg::Depsgraph*) at source/blender/depsgraph/intern/eval/deg_eval.cc:397 - 37 in deg_flush_updates_and_refresh(blender::deg::Depsgraph*) at source/blender/depsgraph/intern/depsgraph_eval.cc:58 - 38 in ::DEG_evaluate_on_framechange(Depsgraph *, float) at source/blender/depsgraph/intern/depsgraph_eval.cc:82 - 39 in BKE_scene_graph_update_for_newframe_ex at source/blender/blenkernel/intern/scene.c:2738 - 40 in BKE_scene_graph_update_for_newframe at source/blender/blenkernel/intern/scene.c:2786 - 41 in ED_update_for_newframe at source/blender/editors/screen/screen_edit.c:1764 - 42 in wm_event_do_notifiers at source/blender/windowmanager/intern/wm_event_system.c:535 - 43 in WM_main at source/blender/windowmanager/intern/wm.c:650 - 44 in main at source/creator/creator.c:519 - 45 in start () #46 in start () ``` It's stuck at

Philipp Oeser removed the

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Freeze when using Object.ray_cast in a driver script #85641