Cycles render segfault when Explode modifier before hair particle modifier + UV material #50535

New Issue

Yuriy · 2017-01-27T01:59:42+01:00

Yuriy commented

2017-01-27 01:59:42 +01:00

Dev-Note: see simplified file, crash backtrace and how to reproduce this in @dfelinto's replies below.

System Information
Windows 8.1 64-bit, gtx970, intel core i5-4570

Blender Version
Broken: 2.78a
Worked: 2.76b

Render Cycles. Click render. Start Synchronizing object. 3 sec and Blender crash. EXCEPTION_ACCESS_VIOLATION

Animate skined mesh. At some point triggered Explode modifier. Further cloth simulation.
Further particle system hair. One system hair dynamics. When rendering start Blender crash.
Render worked in blender internal render and blender 2.74.
My English bad. Just watch the video https://youtu.be/mdlaY8SMa9s

**Dev-Note:** see simplified file, crash backtrace and how to reproduce this in @dfelinto's replies below. **System Information** Windows 8.1 64-bit, gtx970, intel core i5-4570 **Blender Version** Broken: 2.78a Worked: 2.76b Render Cycles. Click render. Start Synchronizing object. 3 sec and Blender crash. EXCEPTION_ACCESS_VIOLATION Animate skined mesh. At some point triggered Explode modifier. Further cloth simulation. Further particle system hair. One system hair dynamics. When rendering start Blender crash. Render worked in blender internal render and blender 2.74. My English bad. Just watch the video https://youtu.be/mdlaY8SMa9s

Yuriy commented

2017-01-27 01:59:42 +01:00

Changed status to: 'Open'

Yuriy commented

2017-01-27 01:59:42 +01:00

Added subscriber: @YuraKharitonow

Dalai Felinto commented

2017-01-27 09:24:55 +01:00

Added subscriber: @dfelinto

Dalai Felinto commented

2017-01-27 09:24:55 +01:00

We need a sample file as simple as possible that we can use to reproduce this

Yuriy commented

2017-01-27 10:31:59 +01:00

sample I think the problem is in the Exploid modifire.

[sample ](https://yadi.sk/d/uVdJOMlt3BCe24) I think the problem is in the Exploid modifire.

Dalai Felinto commented

2017-01-27 11:10:36 +01:00

Confirmed in master: (just blender -b file.blend -f 1):

==16146==ERROR: AddressSanitizer: SEGV on unknown address 0x0000000000c0 (pc 0x56419d395068 bp 0x7fff9913f300 sp 0x7fff9913f2c0 T0)
    - 0 0x56419d395067 in psys_interpolate_uvs /home/guest/src/blender/blender/source/blender/blenkernel/intern/particle.c:1328
    - 1 0x56419d91594c in rna_ParticleSystem_uv_on_emitter /home/guest/src/blender/blender/source/blender/makesrna/intern/rna_particle.c:543
    - 2 0x56419d937a6f in ParticleSystem_uv_on_emitter /home/guest/src/blender/release/master/source/blender/makesrna/intern/rna_particle_gen.c:5362
    - 3 0x56419e0362aa in BL::ParticleSystem::uv_on_emitter(BL::ParticleSystemModifier&, BL::Particle&, int, int, float*) /home/guest/src/blender/release/master/source/blender/makesrna/intern/RNA_blender_cpp.h:50425
    - 4 0x56419e023c42 in ObtainCacheParticleUV /home/guest/src/blender/blender/intern/cycles/blender/blender_curves.cpp:256
    - 5 0x56419e034e9a in ccl::BlenderSync::sync_curves(ccl::Mesh*, BL::Mesh&, BL::Object&, bool, int) /home/guest/src/blender/blender/intern/cycles/blender/blender_curves.cpp:1025
    - 6 0x56419e068da2 in ccl::BlenderSync::sync_mesh(BL::Object&, bool, bool) /home/guest/src/blender/blender/intern/cycles/blender/blender_mesh.cpp:957
    - 7 0x56419dff6849 in ccl::BlenderSync::sync_object(BL::Object&, int*, BL::DupliObject&, ccl::Transform&, unsigned int, float, bool, ccl::BlenderObjectCulling&, bool*) /home/guest/src/blender/blender/intern/cycles/blender/blender_object.cpp:314
    - 8 0x56419dff95ce in ccl::BlenderSync::sync_objects(BL::SpaceView3D&, float) /home/guest/src/blender/blender/intern/cycles/blender/blender_object.cpp:595
    - 9 0x56419dfc9ce3 in ccl::BlenderSync::sync_data(BL::RenderSettings&, BL::SpaceView3D&, BL::Object&, int, int, void**, char const*) /home/guest/src/blender/blender/intern/cycles/blender/blender_sync.cpp:213
    - 10 0x56419dfaf55e in ccl::BlenderSession::render() /home/guest/src/blender/blender/intern/cycles/blender/blender_session.cpp:521
    - 11 0x56419dfa3cc5 in render_func /home/guest/src/blender/blender/intern/cycles/blender/blender_python.cpp:282
    - 12 0x7f5f07d827ee in PyEval_EvalFrameEx (/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0+0x1a27ee)
    - 13 0x7f5f07d825bc in PyEval_EvalFrameEx (/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0+0x1a25bc)
    - 14 0x7f5f07e43f23  (/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0+0x263f23)
    - 15 0x7f5f07e44002 in PyEval_EvalCodeEx (/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0+0x264002)
    - 16 0x7f5f07cd7537  (/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0+0xf7537)
    - 17 0x7f5f07db3946 in PyObject_Call (/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0+0x1d3946)
    - 18 0x56419c34a560 in bpy_class_call /home/guest/src/blender/blender/source/blender/python/intern/bpy_rna.c:7603
    - 19 0x56419d9460e3 in engine_render /home/guest/src/blender/blender/source/blender/makesrna/intern/rna_render.c:179
    - 20 0x56419c16718e in RE_engine_render /home/guest/src/blender/blender/source/blender/render/intern/source/external_engine.c:720
    - 21 0x56419c1aee82 in do_render_3d /home/guest/src/blender/blender/source/blender/render/intern/source/pipeline.c:1515
    - 22 0x56419c1b25de in do_render_fields_blur_3d /home/guest/src/blender/blender/source/blender/render/intern/source/pipeline.c:1902
    - 23 0x56419c1b79dc in do_render_composite_fields_blur_3d /home/guest/src/blender/blender/source/blender/render/intern/source/pipeline.c:2537
    - 24 0x56419c1b9d96 in do_render_all_options /home/guest/src/blender/blender/source/blender/render/intern/source/pipeline.c:2807
    - 25 0x56419c1c0478 in RE_BlenderAnim /home/guest/src/blender/blender/source/blender/render/intern/source/pipeline.c:3732
    - 26 0x56419b1a4ca9 in arg_handle_render_frame /home/guest/src/blender/blender/source/creator/creator_args.c:1378
    - 27 0x56419db5ed07 in BLI_argsParse /home/guest/src/blender/blender/source/blender/blenlib/intern/BLI_args.c:282
    - 28 0x56419b1a7dee in main_args_setup_post /home/guest/src/blender/blender/source/creator/creator_args.c:1902
    - 29 0x56419b1a0b7a in main /home/guest/src/blender/blender/source/creator/creator.c:471
    - 30 0x7f5eff57e2b0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202b0)
    - 31 0x56419b1a0349 in _start (/home/guest/src/blender/release/master/bin/blender+0x16b6349)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/guest/src/blender/blender/source/blender/blenkernel/intern/particle.c:1328 in psys_interpolate_uvs
==16146==ABORTING

Confirmed in master: (just `blender -b file.blend -f 1`): ``` ==16146==ERROR: AddressSanitizer: SEGV on unknown address 0x0000000000c0 (pc 0x56419d395068 bp 0x7fff9913f300 sp 0x7fff9913f2c0 T0) - 0 0x56419d395067 in psys_interpolate_uvs /home/guest/src/blender/blender/source/blender/blenkernel/intern/particle.c:1328 - 1 0x56419d91594c in rna_ParticleSystem_uv_on_emitter /home/guest/src/blender/blender/source/blender/makesrna/intern/rna_particle.c:543 - 2 0x56419d937a6f in ParticleSystem_uv_on_emitter /home/guest/src/blender/release/master/source/blender/makesrna/intern/rna_particle_gen.c:5362 - 3 0x56419e0362aa in BL::ParticleSystem::uv_on_emitter(BL::ParticleSystemModifier&, BL::Particle&, int, int, float*) /home/guest/src/blender/release/master/source/blender/makesrna/intern/RNA_blender_cpp.h:50425 - 4 0x56419e023c42 in ObtainCacheParticleUV /home/guest/src/blender/blender/intern/cycles/blender/blender_curves.cpp:256 - 5 0x56419e034e9a in ccl::BlenderSync::sync_curves(ccl::Mesh*, BL::Mesh&, BL::Object&, bool, int) /home/guest/src/blender/blender/intern/cycles/blender/blender_curves.cpp:1025 - 6 0x56419e068da2 in ccl::BlenderSync::sync_mesh(BL::Object&, bool, bool) /home/guest/src/blender/blender/intern/cycles/blender/blender_mesh.cpp:957 - 7 0x56419dff6849 in ccl::BlenderSync::sync_object(BL::Object&, int*, BL::DupliObject&, ccl::Transform&, unsigned int, float, bool, ccl::BlenderObjectCulling&, bool*) /home/guest/src/blender/blender/intern/cycles/blender/blender_object.cpp:314 - 8 0x56419dff95ce in ccl::BlenderSync::sync_objects(BL::SpaceView3D&, float) /home/guest/src/blender/blender/intern/cycles/blender/blender_object.cpp:595 - 9 0x56419dfc9ce3 in ccl::BlenderSync::sync_data(BL::RenderSettings&, BL::SpaceView3D&, BL::Object&, int, int, void**, char const*) /home/guest/src/blender/blender/intern/cycles/blender/blender_sync.cpp:213 - 10 0x56419dfaf55e in ccl::BlenderSession::render() /home/guest/src/blender/blender/intern/cycles/blender/blender_session.cpp:521 - 11 0x56419dfa3cc5 in render_func /home/guest/src/blender/blender/intern/cycles/blender/blender_python.cpp:282 - 12 0x7f5f07d827ee in PyEval_EvalFrameEx (/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0+0x1a27ee) - 13 0x7f5f07d825bc in PyEval_EvalFrameEx (/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0+0x1a25bc) - 14 0x7f5f07e43f23 (/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0+0x263f23) - 15 0x7f5f07e44002 in PyEval_EvalCodeEx (/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0+0x264002) - 16 0x7f5f07cd7537 (/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0+0xf7537) - 17 0x7f5f07db3946 in PyObject_Call (/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0+0x1d3946) - 18 0x56419c34a560 in bpy_class_call /home/guest/src/blender/blender/source/blender/python/intern/bpy_rna.c:7603 - 19 0x56419d9460e3 in engine_render /home/guest/src/blender/blender/source/blender/makesrna/intern/rna_render.c:179 - 20 0x56419c16718e in RE_engine_render /home/guest/src/blender/blender/source/blender/render/intern/source/external_engine.c:720 - 21 0x56419c1aee82 in do_render_3d /home/guest/src/blender/blender/source/blender/render/intern/source/pipeline.c:1515 - 22 0x56419c1b25de in do_render_fields_blur_3d /home/guest/src/blender/blender/source/blender/render/intern/source/pipeline.c:1902 - 23 0x56419c1b79dc in do_render_composite_fields_blur_3d /home/guest/src/blender/blender/source/blender/render/intern/source/pipeline.c:2537 - 24 0x56419c1b9d96 in do_render_all_options /home/guest/src/blender/blender/source/blender/render/intern/source/pipeline.c:2807 - 25 0x56419c1c0478 in RE_BlenderAnim /home/guest/src/blender/blender/source/blender/render/intern/source/pipeline.c:3732 - 26 0x56419b1a4ca9 in arg_handle_render_frame /home/guest/src/blender/blender/source/creator/creator_args.c:1378 - 27 0x56419db5ed07 in BLI_argsParse /home/guest/src/blender/blender/source/blender/blenlib/intern/BLI_args.c:282 - 28 0x56419b1a7dee in main_args_setup_post /home/guest/src/blender/blender/source/creator/creator_args.c:1902 - 29 0x56419b1a0b7a in main /home/guest/src/blender/blender/source/creator/creator.c:471 - 30 0x7f5eff57e2b0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202b0) - 31 0x56419b1a0349 in _start (/home/guest/src/blender/release/master/bin/blender+0x16b6349) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV /home/guest/src/blender/blender/source/blender/blenkernel/intern/particle.c:1328 in psys_interpolate_uvs ==16146==ABORTING ```

Dalai Felinto commented

2017-01-27 11:54:53 +01:00

How to reproduce this from a new file:

Remove all objects but the camera
Add a plane
Add a UV Map to the plane
Add a Cycles material to it, with a UVMap node (e.g., UVMap > Diffuse > Output)
Add a particle system to it, make it Hair
Add an Explode modifier
Move the Explode modifier above the (automatically-created) ParticleSettings modifier
Render !

Or just take this file and render it: hair_explode.blend

**How to reproduce this from a new file:** 1) Remove all objects but the camera 2) Add a plane 3) Add a UV Map to the plane 4) Add a Cycles material to it, with a UVMap node (e.g., UVMap > Diffuse > Output) 5) Add a particle system to it, make it Hair 6) Add an Explode modifier 7) Move the Explode modifier above the (automatically-created) ParticleSettings modifier 8) Render ! Or just take this file and render it: [hair_explode.blend](https://archive.blender.org/developer/F440947/hair_explode.blend)

Dalai Felinto changed title from ~~EXCEPTION_ACCESS_VIOLATION~~ to Cycles render segfault when Explode modifier before hair particle modifier + UV material

2017-01-27 11:57:09 +01:00

Sergey Sharybin was assigned by Dalai Felinto

2017-01-27 12:09:19 +01:00

blender-admin commented

2017-02-02 14:32:05 +01:00

This issue was referenced by 86747ff180

This issue was referenced by 86747ff1804e084e9129ec1dd31279b39fc00cd8

Sergey Sharybin commented

2017-02-02 14:36:41 +01:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2017-02-02 14:36:41 +01:00

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Cycles render segfault when Explode modifier before hair particle modifier + UV material #50535