Crash while working on drivers #60240

New Issue

Amir Shehata · 2019-01-06T18:27:25+01:00

Amir Shehata commented

2019-01-06 18:27:25 +01:00

System Information
Operating system: Ubuntu 18.04
Graphics card: 2x GTX 1060

Blender Version
Broken: 2.80

Short description of error
Unfortunately, this is a non-repeatable crash. I ran into it a couple of times as I was adding/editing drivers to a face rig I'm working on. The rig itself and the drivers are not complicated. It appears to happen after adding several drivers. The best I can do is attach the file I'm working on and the core dump log.

facial_rig.blend

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).
cat /tmp/facial_rig.crash.txt

Blender 2.80 (sub 40), Commit date: 2019-01-05 17:08, Hash `674d364af0`

Can't edit driven number value, see graph editor for the driver setup. # Info
bpy.data.shape_keys["Expressions"].key_blocks["Expressions_eyeSquintR_min"].value = 0 # Property
bpy.context.object.active_shape_key_index = 33 # Property
bpy.data.shape_keys["Expressions"].key_blocks["Expressions_eyesHoriz_max"].value = 0 # Property
bpy.context.object.active_shape_key_index = 32 # Property
bpy.data.shape_keys["Expressions"].(null) = "-var" # Property
bpy.data.shape_keys["Expressions"].(null) = 'LOCAL_SPACE' # Property
bpy.data.shape_keys["Expressions"].(null) = bpy.data.objects["MBLab_skeleton_face_rig"] # Property
bpy.data.shape_keys["Expressions"].(null) = "Expressions_eyesLookAt" # Property
bpy.ops.graph.fmodifier_add(type='GENERATOR') # Operator
bpy.ops.transform.translate(value=(-0.00967666, -2.81112e-10, 0.00209225), constraint_matrix=(1, 0, -0, 0, 0, 1, 0, -1, 0), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator
bpy.ops.pose.loc_clear() # Operator
bpy.context.object.active_shape_key_index = 33 # Property
bpy.data.shape_keys["Expressions"].(null) = "var" # Property
bpy.data.shape_keys["Expressions"].(null) = 'LOC_Y' # Property
bpy.data.shape_keys["Expressions"].(null) = "-var" # Property
bpy.ops.transform.translate(value=(-0.0573381, 0, 0), constraint_axis=(True, False, False), constraint_matrix=(1, 0, -0, 0, 0, 1, 0, -1, 0), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator
bpy.data.window_managers["WinMan"].(null)- [x] = -0.057338 # Property
bpy.ops.transform.translate(value=(-0.057338, 0, 0), constraint_axis=(True, False, False), constraint_matrix=(1, 0, -0, 0, 0, 1, 0, -1, 0), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator
bpy.context.space_data.context = 'BONE_CONSTRAINT' # Property
bpy.ops.pose.constraint_add(type='LIMIT_LOCATION') # Operator
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].max_x = -0.057338 # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].min_x = 0.057338 # Property
bpy.ops.transform.translate(value=(0, 0.047923, 0), constraint_axis=(False, True, False), constraint_matrix=(1, 0, -0, 0, 0, 1, 0, -1, 0), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator
bpy.data.window_managers["WinMan"].(null)- [x] = 0.047923 # Property
bpy.ops.transform.translate(value=(0, 0.047923, 0), constraint_axis=(False, True, False), constraint_matrix=(1, 0, -0, 0, 0, 1, 0, -1, 0), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].min_y = 0.047923 # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].max_y = -0.047923 # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].use_min_y = True # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].use_max_y = True # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].use_max_x = True # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].use_min_x = True # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].owner_space = 'LOCAL' # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].mute = True # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].location- [x] = 0.425595 # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].min_y = 0.425595 # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].max_y = 0.425595 # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].min_y = -0.425595 # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].location- [x] = -0.509208 # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].min_x = -0.509208 # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].max_x = 0.509208 # Property
bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].mute = False # Property
bpy.ops.pose.loc_clear() # Operator
Saved "facial_rig.blend" # Info
bpy.context.space_data.context = 'DATA' # Property
bpy.context.object.active_shape_key_index = 42 # Property
bpy.data.shape_keys["Expressions"].(null) = 'ROT_X' # Property
bpy.data.shape_keys["Expressions"].(null) = "var" # Property
bpy.data.shape_keys["Expressions"].(null) = 'LOCAL_SPACE' # Property
bpy.data.shape_keys["Expressions"].(null) = bpy.data.objects["MBLab_skeleton_face_rig"] # Property
bpy.data.shape_keys["Expressions"].(null) = "Expressions_mouthChew_max_min" # Property
bpy.ops.transform.rotate(value=-0.0826937, axis=(-0, 1, 1.34359e-07), constraint_matrix=(-0.00149694, -0.999996, 0.00258612, 0.999996, -0.00150362, -0.00258206, 0.00258593, 0.00258224, 0.999993), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator
bpy.ops.graph.fmodifier_add(type='GENERATOR') # Operator
bpy.ops.pose.loc_clear() # Operator
bpy.context.object.active_shape_key_index = 43 # Property
bpy.data.shape_keys["Expressions"].(null) = "-var" # Property
bpy.ops.transform.rotate(value=-0.454171, axis=(-0, 1, 1.34359e-07), constraint_matrix=(-0.00149694, -0.999995, 0.00258612, 0.996798, -0.00128538, 0.079955, -0.0799513, 0.00269753, 0.996795), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator
bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].rotation_quaternion- [x] = 0.265412 # Property
bpy.context.space_data.context = 'BONE_CONSTRAINT' # Property
bpy.ops.pose.constraint_add(type='LIMIT_ROTATION') # Operator
bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].max_x = 0.00463231 # Property
bpy.ops.transform.rotate(value=1.09597, axis=(-0, 1, 1.34359e-07), constraint_matrix=(-0.00149707, -0.999996, 0.00258612, 0.869663, -2.53171e-05, 0.493646, -0.493644, 0.00298807, 0.869659), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator
bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].rotation_quaternion- [x] = -0.294416 # Property
bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].min_x = -0.00513853 # Property
bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].owner_space = 'LOCAL' # Property
bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].min_x = -0.523599 # Property
bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].max_x = 0.523599 # Property
bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].use_transform_limit = True # Property
bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].use_limit_x = True # Property
bpy.ops.pose.loc_clear() # Operator
bpy.ops.pose.rot_clear() # Operator
bpy.context.space_data.context = 'DATA' # Property
bpy.data.shape_keys["Expressions"].(null) = "Expressions_mouthClosed_max_min" # Property

backtrace

./blender(BLI_system_backtrace+0x33) [0x5640d59d1c53]
./blender(+0xbf1960) [0x5640d4f24960]
/lib/x86_64-linux-gnu/libc.so.6(+0x3ef20) [0x7f569b407f20]
./blender(BKE_animsys_eval_driver+0x41) [0x5640d56535d1]
./blender(+0x16beb10) [0x5640d59f1b10]
./blender(BLI_task_pool_work_and_wait+0x18d) [0x5640d59d2b3d]
./blender(_ZN3DEG23deg_evaluate_on_refreshEPNS_9DepsgraphE+0x18b) [0x5640d59f1d8b]
./blender(BKE_scene_graph_update_tagged+0x97) [0x5640d5789837]
./blender(wm_event_do_depsgraph+0xd0) [0x5640d4f28b30]
./blender(wm_event_do_refresh_wm_and_depsgraph+0x85) [0x5640d4f28bd5]
./blender(wm_event_do_notifiers+0x45b) [0x5640d4f2f1fb]
./blender(WM_main+0x28) [0x5640d4f25438]
./blender(main+0x351) [0x5640d4f07c61]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x7f569b3eab97]
./blender(_start+0x2a) [0x5640d4f2105a]

**System Information** Operating system: Ubuntu 18.04 Graphics card: 2x GTX 1060 **Blender Version** Broken: 2.80 **Short description of error** Unfortunately, this is a non-repeatable crash. I ran into it a couple of times as I was adding/editing drivers to a face rig I'm working on. The rig itself and the drivers are not complicated. It appears to happen after adding several drivers. The best I can do is attach the file I'm working on and the core dump log. [facial_rig.blend](https://archive.blender.org/developer/F6201272/facial_rig.blend) **Exact steps for others to reproduce the error** Based on the default startup or an attached .blend file (as simple as possible). cat /tmp/facial_rig.crash.txt # Blender 2.80 (sub 40), Commit date: 2019-01-05 17:08, Hash 674d364af0b1 Can't edit driven number value, see graph editor for the driver setup. # Info bpy.data.shape_keys["Expressions"].key_blocks["Expressions_eyeSquintR_min"].value = 0 # Property bpy.context.object.active_shape_key_index = 33 # Property bpy.data.shape_keys["Expressions"].key_blocks["Expressions_eyesHoriz_max"].value = 0 # Property bpy.context.object.active_shape_key_index = 32 # Property bpy.data.shape_keys["Expressions"].(null) = "-var" # Property bpy.data.shape_keys["Expressions"].(null) = 'LOCAL_SPACE' # Property bpy.data.shape_keys["Expressions"].(null) = bpy.data.objects["MBLab_skeleton_face_rig"] # Property bpy.data.shape_keys["Expressions"].(null) = "Expressions_eyesLookAt" # Property bpy.ops.graph.fmodifier_add(type='GENERATOR') # Operator bpy.ops.transform.translate(value=(-0.00967666, -2.81112e-10, 0.00209225), constraint_matrix=(1, 0, -0, 0, 0, 1, 0, -1, 0), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator bpy.ops.pose.loc_clear() # Operator bpy.context.object.active_shape_key_index = 33 # Property bpy.data.shape_keys["Expressions"].(null) = "var" # Property bpy.data.shape_keys["Expressions"].(null) = 'LOC_Y' # Property bpy.data.shape_keys["Expressions"].(null) = "-var" # Property bpy.ops.transform.translate(value=(-0.0573381, 0, 0), constraint_axis=(True, False, False), constraint_matrix=(1, 0, -0, 0, 0, 1, 0, -1, 0), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator bpy.data.window_managers["WinMan"].(null)- [x] = -0.057338 # Property bpy.ops.transform.translate(value=(-0.057338, 0, 0), constraint_axis=(True, False, False), constraint_matrix=(1, 0, -0, 0, 0, 1, 0, -1, 0), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator bpy.context.space_data.context = 'BONE_CONSTRAINT' # Property bpy.ops.pose.constraint_add(type='LIMIT_LOCATION') # Operator bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].max_x = -0.057338 # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].min_x = 0.057338 # Property bpy.ops.transform.translate(value=(0, 0.047923, 0), constraint_axis=(False, True, False), constraint_matrix=(1, 0, -0, 0, 0, 1, 0, -1, 0), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator bpy.data.window_managers["WinMan"].(null)- [x] = 0.047923 # Property bpy.ops.transform.translate(value=(0, 0.047923, 0), constraint_axis=(False, True, False), constraint_matrix=(1, 0, -0, 0, 0, 1, 0, -1, 0), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].min_y = 0.047923 # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].max_y = -0.047923 # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].use_min_y = True # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].use_max_y = True # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].use_max_x = True # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].use_min_x = True # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].owner_space = 'LOCAL' # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].mute = True # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].location- [x] = 0.425595 # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].min_y = 0.425595 # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].max_y = 0.425595 # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].min_y = -0.425595 # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].location- [x] = -0.509208 # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].min_x = -0.509208 # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].max_x = 0.509208 # Property bpy.context.object.pose.bones["Expressions_eyesLookAt"].constraints["Limit Location"].mute = False # Property bpy.ops.pose.loc_clear() # Operator Saved "facial_rig.blend" # Info bpy.context.space_data.context = 'DATA' # Property bpy.context.object.active_shape_key_index = 42 # Property bpy.data.shape_keys["Expressions"].(null) = 'ROT_X' # Property bpy.data.shape_keys["Expressions"].(null) = "var" # Property bpy.data.shape_keys["Expressions"].(null) = 'LOCAL_SPACE' # Property bpy.data.shape_keys["Expressions"].(null) = bpy.data.objects["MBLab_skeleton_face_rig"] # Property bpy.data.shape_keys["Expressions"].(null) = "Expressions_mouthChew_max_min" # Property bpy.ops.transform.rotate(value=-0.0826937, axis=(-0, 1, 1.34359e-07), constraint_matrix=(-0.00149694, -0.999996, 0.00258612, 0.999996, -0.00150362, -0.00258206, 0.00258593, 0.00258224, 0.999993), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator bpy.ops.graph.fmodifier_add(type='GENERATOR') # Operator bpy.ops.pose.loc_clear() # Operator bpy.context.object.active_shape_key_index = 43 # Property bpy.data.shape_keys["Expressions"].(null) = "-var" # Property bpy.ops.transform.rotate(value=-0.454171, axis=(-0, 1, 1.34359e-07), constraint_matrix=(-0.00149694, -0.999995, 0.00258612, 0.996798, -0.00128538, 0.079955, -0.0799513, 0.00269753, 0.996795), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].rotation_quaternion- [x] = 0.265412 # Property bpy.context.space_data.context = 'BONE_CONSTRAINT' # Property bpy.ops.pose.constraint_add(type='LIMIT_ROTATION') # Operator bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].max_x = 0.00463231 # Property bpy.ops.transform.rotate(value=1.09597, axis=(-0, 1, 1.34359e-07), constraint_matrix=(-0.00149707, -0.999996, 0.00258612, 0.869663, -2.53171e-05, 0.493646, -0.493644, 0.00298807, 0.869659), constraint_orientation='NORMAL', mirror=False, proportional='DISABLED', proportional_edit_falloff='SMOOTH', proportional_size=1) # Operator bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].rotation_quaternion- [x] = -0.294416 # Property bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].min_x = -0.00513853 # Property bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].owner_space = 'LOCAL' # Property bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].min_x = -0.523599 # Property bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].max_x = 0.523599 # Property bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].use_transform_limit = True # Property bpy.context.object.pose.bones["Expressions_mouthChew_max_min"].constraints["Limit Rotation"].use_limit_x = True # Property bpy.ops.pose.loc_clear() # Operator bpy.ops.pose.rot_clear() # Operator bpy.context.space_data.context = 'DATA' # Property bpy.data.shape_keys["Expressions"].(null) = "Expressions_mouthClosed_max_min" # Property # backtrace ./blender(BLI_system_backtrace+0x33) [0x5640d59d1c53] ./blender(+0xbf1960) [0x5640d4f24960] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20) [0x7f569b407f20] ./blender(BKE_animsys_eval_driver+0x41) [0x5640d56535d1] ./blender(+0x16beb10) [0x5640d59f1b10] ./blender(BLI_task_pool_work_and_wait+0x18d) [0x5640d59d2b3d] ./blender(_ZN3DEG23deg_evaluate_on_refreshEPNS_9DepsgraphE+0x18b) [0x5640d59f1d8b] ./blender(BKE_scene_graph_update_tagged+0x97) [0x5640d5789837] ./blender(wm_event_do_depsgraph+0xd0) [0x5640d4f28b30] ./blender(wm_event_do_refresh_wm_and_depsgraph+0x85) [0x5640d4f28bd5] ./blender(wm_event_do_notifiers+0x45b) [0x5640d4f2f1fb] ./blender(WM_main+0x28) [0x5640d4f25438] ./blender(main+0x351) [0x5640d4f07c61] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x7f569b3eab97] ./blender(_start+0x2a) [0x5640d4f2105a]

Amir Shehata commented

2019-01-06 18:27:25 +01:00

Added subscriber: @AmirShehata

Amir Shehata commented

2019-01-06 22:45:36 +01:00

Here are more concrete steps I was able to use to reproduce the crash:

Add driver to one of the facial expressions in the file
Edit the driver by right clicking and then selecting "edit driver'
Change the expression from var -> -var
Copy the driver
Paste it on a different facial expression
Edit the driver by right clicking and then selecting "edit driver"
change the expression from -var to var
Go to the bone controlling the driver and move it
Crash occurs

Saw the following output on the console:
Error in Driver: The following Python expression failed:

      'var'

Traceback (most recent call last):

File "<bpy driver>", line 1, in <module>

NameError: name 'var' is not defined
find_node_operation: Failed for (BONE_DONE, '')
add_relation(Copy Rotation) - Could not find op_from (OperationKey(type: BONE, component name: 'spine01.001', operation code: BONE_DONE))
add_relation(Copy Rotation) - Failed, but op_to (OperationKey(type: BONE, component name: 'abd_muscle_01_R', operation code: BONE_CONSTRAINTS)) was ok

Error in Driver: The following Python expression failed:

      'var'

did an initial triage through gdb with debug build:

(gdb) bt

0 0x0000555557e27278 in BKE_animsys_eval_driver (depsgraph=0x7fffb37ef108, id=0x7fffbdac9e48, driver_index=49, driver_orig=0x7fffa53f9548)

  at /home/ashehata/Software/blender_git/blender/source/blender/blenkernel/intern/anim_sys.c:3470

1 0x000055555840ad83 in std::__invoke_impl<void, void (&)(Depsgraph, ID, int, ChannelDriver), Depsgraph, ID&, int&, ChannelDriver&>(std::__invoke_other, void (&)(Depsgraph, ID, int, ChannelDriver), Depsgraph&&, ID&, int&, ChannelDriver&) (__f=

  @0x7fffa8fae800: 0x555557e271e7 <BKE_animsys_eval_driver>, __args#0=@0x7fffc8bfcd10: 0x7fffb37ef108, __args#1=@0x7fffa8fae818: 0x7fffbdac9e48, __args#2=@0x7fffa8fae810: 49, __args#3=@0x7fffa8fae808: 0x7fffa53f9548) at /usr/include/c++/7/bits/invoke.h:60

2 0x00005555584098d0 in std::invoke<void (&)(Depsgraph, ID, int, ChannelDriver), Depsgraph, ID&, int&, ChannelDriver&>(void (&)(Depsgraph, ID, int, ChannelDriver), Depsgraph&&, ID&, int&, ChannelDriver&) (fn=

  @0x7fffa8fae800: 0x555557e271e7 <BKE_animsys_eval_driver>, __args#0=@0x7fffc8bfcd10: 0x7fffb37ef108, __args#1=@0x7fffa8fae818: 0x7fffbdac9e48, __args#2=@0x7fffa8fae810: 49, __args#3=@0x7fffa8fae808: 0x7fffa53f9548) at /usr/include/c++/7/bits/invoke.h:95

3 0x0000555558408149 in std::_Bind<void ((std::_Placeholder<1>, ID, int, ChannelDriver*))(Depsgraph*, ID*, int, ChannelDriver*)>::__call<void, Depsgraph*&&, 0ul, 1ul, 2ul, 3ul>(std::tuple<Depsgraph*&&>&&, std::_Index_tuple<0ul, 1ul, 2ul, 3ul>) (this=0x7fffa8fae800, __args=...) at /usr/include/c++/7/functional:467
4 0x000055555840610a in std::_Bind<void ((std::_Placeholder<1>, ID, int, ChannelDriver*))(Depsgraph*, ID*, int, ChannelDriver*)>::operator()<Depsgraph*, void>(Depsgraph*&&) (this=0x7fffa8fae800, __args#0=@0x7fffc8bfcd10: 0x7fffb37ef108) at /usr/include/c++/7/functional:551
5 0x0000555558403058 in std::_Function_handler<void (Depsgraph*), std::_Bind<void ((std::_Placeholder<1>, ID, int, ChannelDriver*))(Depsgraph*, ID*, int, ChannelDriver*)> >::_M_invoke(std::_Any_data const&, Depsgraph*&&) (__functor=..., __args#0=@0x7fffc8bfcd10: 0x7fffb37ef108) at /usr/include/c++/7/bits/std_function.h:316
6 0x000055555841cd2b in std::function<void (Depsgraph*)>::operator()(Depsgraph*) const (this=0x7fffbda5a128, __args#0=0x7fffb37ef108) at /usr/include/c++/7/bits/std_function.h:706

7 0x000055555841c30c in DEG::deg_task_run_func(TaskPool, void, int) (pool=0x7fffa4ff7008, taskdata=0x7fffbda5a0c8, thread_id=3)

  at /home/ashehata/Software/blender_git/blender/source/blender/depsgraph/intern/eval/deg_eval.cc:95

8 0x00005555583d97d4 in task_scheduler_thread_run (thread_p=0x7fffca8f1898) at /home/ashehata/Software/blender_git/blender/source/blender/blenlib/intern/task.c:442
9 0x00007ffff54866db in start_thread (arg=0x7fffc8bfd700) at pthread_create.c:463

10 0x00007ffff364788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

(gdb) p id
$1 = (ID *) 0x7fffbdac9e48
(gdb) p id
$2 = (ID *) 0x7fffbdac9e48
(gdb) p id->name
$3 = "KEExpressions", '\000' <repeats 52 times>
(gdb) p fcu
$4 = (FCurve *) 0x0
(gdb) p adt->driver_array
$5 = (FCurve **) 0x7fffc3ff31c8
(gdb) p adt->driver_array[49]
$6 = (FCurve *) 0x0

Crash occurs when trying to access a NULL pointer:
3470 »···DEG_debug_print_eval_subdata_index(
3471 »··· depsgraph, func, id->name, id, "fcu", fcu->rna_path, fcu, fcu->array_index);

Looks like the last element in adt->driver_array- [ ] which has some valid data is adt->driver_array[48].

Could the driver index passed in be incremented one too far? Or race condition?

I have the core file if you want to inspect it.

Here are more concrete steps I was able to use to reproduce the crash: 1. Add driver to one of the facial expressions in the file 2. Edit the driver by right clicking and then selecting "edit driver' 3. Change the expression from var -> -var 4. Copy the driver 5. Paste it on a different facial expression 6. Edit the driver by right clicking and then selecting "edit driver" 7. change the expression from -var to var 8. Go to the bone controlling the driver and move it 9. Crash occurs ---- Saw the following output on the console: Error in Driver: The following Python expression failed: ``` 'var' ``` Traceback (most recent call last): ``` File "<bpy driver>", line 1, in <module> ``` NameError: name 'var' is not defined find_node_operation: Failed for (BONE_DONE, '') add_relation(Copy Rotation) - Could not find op_from (OperationKey(type: BONE, component name: 'spine01.001', operation code: BONE_DONE)) add_relation(Copy Rotation) - Failed, but op_to (OperationKey(type: BONE, component name: 'abd_muscle_01_R', operation code: BONE_CONSTRAINTS)) was ok Error in Driver: The following Python expression failed: ``` 'var' ``` ----- did an initial triage through gdb with debug build: (gdb) bt # 0 0x0000555557e27278 in BKE_animsys_eval_driver (depsgraph=0x7fffb37ef108, id=0x7fffbdac9e48, driver_index=49, driver_orig=0x7fffa53f9548) ``` at /home/ashehata/Software/blender_git/blender/source/blender/blenkernel/intern/anim_sys.c:3470 ``` # 1 0x000055555840ad83 in std::__invoke_impl<void, void (*&)(Depsgraph*, ID*, int, ChannelDriver*), Depsgraph*, ID*&, int&, ChannelDriver*&>(std::__invoke_other, void (*&)(Depsgraph*, ID*, int, ChannelDriver*), Depsgraph*&&, ID*&, int&, ChannelDriver*&) (__f= ``` @0x7fffa8fae800: 0x555557e271e7 <BKE_animsys_eval_driver>, __args#0=@0x7fffc8bfcd10: 0x7fffb37ef108, __args#1=@0x7fffa8fae818: 0x7fffbdac9e48, __args#2=@0x7fffa8fae810: 49, __args#3=@0x7fffa8fae808: 0x7fffa53f9548) at /usr/include/c++/7/bits/invoke.h:60 ``` # 2 0x00005555584098d0 in std::__invoke<void (*&)(Depsgraph*, ID*, int, ChannelDriver*), Depsgraph*, ID*&, int&, ChannelDriver*&>(void (*&)(Depsgraph*, ID*, int, ChannelDriver*), Depsgraph*&&, ID*&, int&, ChannelDriver*&) (__fn= ``` @0x7fffa8fae800: 0x555557e271e7 <BKE_animsys_eval_driver>, __args#0=@0x7fffc8bfcd10: 0x7fffb37ef108, __args#1=@0x7fffa8fae818: 0x7fffbdac9e48, __args#2=@0x7fffa8fae810: 49, __args#3=@0x7fffa8fae808: 0x7fffa53f9548) at /usr/include/c++/7/bits/invoke.h:95 ``` - 3 0x0000555558408149 in std::_Bind<void (*(std::_Placeholder<1>, ID*, int, ChannelDriver*))(Depsgraph*, ID*, int, ChannelDriver*)>::__call<void, Depsgraph*&&, 0ul, 1ul, 2ul, 3ul>(std::tuple<Depsgraph*&&>&&, std::_Index_tuple<0ul, 1ul, 2ul, 3ul>) (this=0x7fffa8fae800, __args=...) at /usr/include/c++/7/functional:467 - 4 0x000055555840610a in std::_Bind<void (*(std::_Placeholder<1>, ID*, int, ChannelDriver*))(Depsgraph*, ID*, int, ChannelDriver*)>::operator()<Depsgraph*, void>(Depsgraph*&&) (this=0x7fffa8fae800, __args#0=@0x7fffc8bfcd10: 0x7fffb37ef108) at /usr/include/c++/7/functional:551 - 5 0x0000555558403058 in std::_Function_handler<void (Depsgraph*), std::_Bind<void (*(std::_Placeholder<1>, ID*, int, ChannelDriver*))(Depsgraph*, ID*, int, ChannelDriver*)> >::_M_invoke(std::_Any_data const&, Depsgraph*&&) (__functor=..., __args#0=@0x7fffc8bfcd10: 0x7fffb37ef108) at /usr/include/c++/7/bits/std_function.h:316 - 6 0x000055555841cd2b in std::function<void (Depsgraph*)>::operator()(Depsgraph*) const (this=0x7fffbda5a128, __args#0=0x7fffb37ef108) at /usr/include/c++/7/bits/std_function.h:706 # 7 0x000055555841c30c in DEG::deg_task_run_func(TaskPool*, void*, int) (pool=0x7fffa4ff7008, taskdata=0x7fffbda5a0c8, thread_id=3) ``` at /home/ashehata/Software/blender_git/blender/source/blender/depsgraph/intern/eval/deg_eval.cc:95 ``` - 8 0x00005555583d97d4 in task_scheduler_thread_run (thread_p=0x7fffca8f1898) at /home/ashehata/Software/blender_git/blender/source/blender/blenlib/intern/task.c:442 - 9 0x00007ffff54866db in start_thread (arg=0x7fffc8bfd700) at pthread_create.c:463 # 10 0x00007ffff364788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 (gdb) p id $1 = (ID *) 0x7fffbdac9e48 (gdb) p id $2 = (ID *) 0x7fffbdac9e48 (gdb) p id->name $3 = "KEExpressions", '\000' <repeats 52 times> (gdb) p fcu $4 = (FCurve *) 0x0 (gdb) p adt->driver_array $5 = (FCurve **) 0x7fffc3ff31c8 (gdb) p adt->driver_array[49] $6 = (FCurve *) 0x0 Crash occurs when trying to access a NULL pointer: 3470 »···DEG_debug_print_eval_subdata_index( 3471 »··· depsgraph, __func__, id->name, id, "fcu", fcu->rna_path, fcu, fcu->array_index); Looks like the last element in adt->driver_array- [ ] which has some valid data is adt->driver_array[48]. Could the driver index passed in be incremented one too far? Or race condition? I have the core file if you want to inspect it.

Amir Shehata commented

2019-01-10 20:44:10 +01:00

I'm unable to reproduce with the latest build.

Brecht Van Lommel commented

2019-01-15 18:47:06 +01:00

Added subscriber: @brecht

Brecht Van Lommel commented

2019-01-15 18:47:06 +01:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2019-01-15 18:47:06 +01:00

Brecht Van Lommel self-assigned this 2019-01-15 18:47:06 +01:00

Brecht Van Lommel commented

2019-01-15 18:47:06 +01:00

We'll assume it's fixed then? If you can find a way to reproduce it still we can reopen.

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Crash while working on drivers #60240

Blender 2.80 (sub 40), Commit date: 2019-01-05 17:08, Hash 674d364af0

backtrace

0 0x0000555557e27278 in BKE_animsys_eval_driver (depsgraph=0x7fffb37ef108, id=0x7fffbdac9e48, driver_index=49, driver_orig=0x7fffa53f9548)

1 0x000055555840ad83 in std::__invoke_impl<void, void (&)(Depsgraph, ID*, int, ChannelDriver*), Depsgraph*, ID*&, int&, ChannelDriver*&>(std::__invoke_other, void (&)(Depsgraph, ID*, int, ChannelDriver*), Depsgraph*&&, ID*&, int&, ChannelDriver*&) (__f=

2 0x00005555584098d0 in std::__invoke<void (&)(Depsgraph, ID*, int, ChannelDriver*), Depsgraph*, ID*&, int&, ChannelDriver*&>(void (&)(Depsgraph, ID*, int, ChannelDriver*), Depsgraph*&&, ID*&, int&, ChannelDriver*&) (__fn=

7 0x000055555841c30c in DEG::deg_task_run_func(TaskPool*, void*, int) (pool=0x7fffa4ff7008, taskdata=0x7fffbda5a0c8, thread_id=3)

10 0x00007ffff364788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Blender 2.80 (sub 40), Commit date: 2019-01-05 17:08, Hash `674d364af0`

1 0x000055555840ad83 in std::__invoke_impl<void, void (&)(Depsgraph, ID, int, ChannelDriver), Depsgraph, ID&, int&, ChannelDriver&>(std::__invoke_other, void (&)(Depsgraph, ID, int, ChannelDriver), Depsgraph&&, ID&, int&, ChannelDriver&) (__f=

2 0x00005555584098d0 in std::invoke<void (&)(Depsgraph, ID, int, ChannelDriver), Depsgraph, ID&, int&, ChannelDriver&>(void (&)(Depsgraph, ID, int, ChannelDriver), Depsgraph&&, ID&, int&, ChannelDriver&) (fn=

7 0x000055555841c30c in DEG::deg_task_run_func(TaskPool, void, int) (pool=0x7fffa4ff7008, taskdata=0x7fffbda5a0c8, thread_id=3)