Blender crash whith 'corrupt' customdata (CD_BWEIGHT) #62318

New Issue

Marcin Twarowski · 2019-03-07T16:01:19+01:00

Marcin Twarowski commented

2019-03-07 16:01:19 +01:00

Win 10, GTX 1080
Blender 2.80 2019-03-07 11:23 a280867ac2

Attached blend file crashes Blender immediately on attempt to open it. It's possible to append the object Circle.006 from the file. However when you try to switch to edit mode it closes Blender. Interestingly, if you copy that object then you can enter edit mode on that copied mesh.
shelf.blend

Win 10, GTX 1080 Blender 2.80 2019-03-07 11:23 a280867ac2ed Attached blend file crashes Blender immediately on attempt to open it. It's possible to append the object Circle.006 from the file. However when you try to switch to edit mode it closes Blender. Interestingly, if you copy that object then you can enter edit mode on that copied mesh. [shelf.blend](https://archive.blender.org/developer/F6779759/shelf.blend)

Marcin Twarowski commented

2019-03-07 16:01:19 +01:00

Added subscriber: @MarcinTwarowski

blender-admin commented

2019-03-07 16:01:19 +01:00

#62378 was marked as duplicate of this issue

blender-admin commented

2019-03-07 16:01:19 +01:00

#62371 was marked as duplicate of this issue

blender-admin commented

2019-03-07 16:01:19 +01:00

#62372 was marked as duplicate of this issue

blender-admin commented

2019-03-07 16:01:19 +01:00

#62324 was marked as duplicate of this issue

Sebastian Parborg commented

2019-03-07 16:53:31 +01:00

Added subscriber: @ZedDB

Campbell Barton was assigned by Sebastian Parborg

2019-03-07 16:53:31 +01:00

Sebastian Parborg commented

2019-03-07 16:53:31 +01:00

Backtrace:

Thread 1 "blender" received signal SIGSEGV, Segmentation fault.
0x00007ffff1392890 in __memcpy_ssse3 () from /lib64/libc.so.6
(gdb) bt
- 0  0x00007ffff1392890 in __memcpy_ssse3 () from /lib64/libc.so.6
- 1  0x0000555558149e29 in CustomData_to_bmesh_block (source=0x7fffcf3a5708, dest=0x7fffd8811668, src_index=0, dest_block=0x7fffcf4d0010,
    use_default_init=true) at /home/zed/programmering/blender_master/blender/source/blender/blenkernel/intern/customdata.c:3315
#2  0x0000555557cb8571 in BM_mesh_bm_from_me (bm=0x7fffd8811508, me=0x7fffcf3a5508, params=0x7fffffffcd80)
    at /home/zed/programmering/blender_master/blender/source/blender/bmesh/intern/bmesh_mesh_conv.c:348
#3  0x00005555581fb361 in BKE_mesh_to_bmesh_ex (me=0x7fffcf3a5508, create_params=0x7fffffffcdc4, convert_params=0x7fffffffcd80)
    at /home/zed/programmering/blender_master/blender/source/blender/blenkernel/intern/mesh.c:712
#4  0x00005555581fb3f9 in BKE_mesh_to_bmesh (me=0x7fffcf3a5508, ob=0x7fffcf3d1608, add_key_index=false, params=0x7fffffffcdc4)
    at /home/zed/programmering/blender_master/blender/source/blender/blenkernel/intern/mesh.c:721
#5  0x000055555764cff3 in EDBM_mesh_make (ob=0x7fffcf3d1608, select_mode=4, add_key_index=false)
    at /home/zed/programmering/blender_master/blender/source/blender/editors/mesh/editmesh_utils.c:296
#6  0x0000555557734c88 in ED_object_editmode_enter_ex (bmain=0x7fffcf3a6308, scene=0x7fffe4f19008, ob=0x7fffcf3d1608, flag=0)
    at /home/zed/programmering/blender_master/blender/source/blender/editors/object/object_edit.c:573
- 7  0x000055555791a02e in ED_editors_init (C=0x7fffea058188) at /home/zed/programmering/blender_master/blender/source/blender/editors/util/ed_util.c:142
- 8  0x000055555722d120 in wm_file_read_post (C=0x7fffea058188, is_startup_file=false, is_factory_startup=false, reset_app_template=false)
    at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_files.c:521
#9  0x000055555722d488 in WM_file_read (C=0x7fffea058188, filepath=0x7fffffffd020 "/tmp/bugs/shelf.blend", reports=0x7fffcf601a08)
    at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_files.c:638
#10 0x00005555572305b8 in wm_file_read_opwrap (C=0x7fffea058188, filepath=0x7fffffffd020 "/tmp/bugs/shelf.blend", reports=0x7fffcf601a08, autoexec_init=true)
    at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_files.c:1864
#11 0x0000555557230828 in wm_open_mainfile_exec (C=0x7fffea058188, op=0x7fffcf5d4648)
    at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_files.c:1924
#12 0x00005555572234b7 in wm_operator_invoke (C=0x7fffea058188, ot=0x7fffe963d8a8, event=0x0, properties=0x7fffffffd600, reports=0x0, poll_only=false,
    use_last_properties=true) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:1352
#13 0x0000555557223cba in wm_operator_call_internal (C=0x7fffea058188, ot=0x7fffe963d8a8, properties=0x7fffffffd600, reports=0x0, context=6, poll_only=false,
    event=0x0) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:1585
#14 0x0000555557223d77 in WM_operator_name_call_ptr (C=0x7fffea058188, ot=0x7fffe963d8a8, context=6, properties=0x7fffffffd600)
    at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:1597
#15 0x0000555557566af7 in ui_apply_but_funcs_after (C=0x7fffea058188)
    at /home/zed/programmering/blender_master/blender/source/blender/editors/interface/interface_handlers.c:770
#16 0x000055555757fc82 in ui_popup_handler (C=0x7fffea058188, event=0x7fffcc3edd88, userdata=0x7fffcecf8048)
    at /home/zed/programmering/blender_master/blender/source/blender/editors/interface/interface_handlers.c:9988
#17 0x000055555722113f in wm_handler_ui_call (C=0x7fffea058188, handler=0x7fffcfc4e7a8, event=0x7fffcc3edd88, always_pass=0)
    at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:584
#18 0x00005555572260b8 in wm_handlers_do_intern (C=0x7fffea058188, event=0x7fffcc3edd88, handlers=0x7fffe4e52198)
    at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:2469
#19 0x0000555557226a8f in wm_handlers_do (C=0x7fffea058188, event=0x7fffcc3edd88, handlers=0x7fffe4e52198)
    at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:2698
#20 0x0000555557227cc3 in wm_event_do_handlers (C=0x7fffea058188)
    at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:3049
- 21 0x000055555721c71f in WM_main (C=0x7fffea058188) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm.c:418
- 22 0x0000555557216e54 in main (argc=1, argv=0x7fffffffdd28) at /home/zed/programmering/blender_master/blender/source/creator/creator.c:505

Backtrace: ``` Thread 1 "blender" received signal SIGSEGV, Segmentation fault. 0x00007ffff1392890 in __memcpy_ssse3 () from /lib64/libc.so.6 (gdb) bt - 0 0x00007ffff1392890 in __memcpy_ssse3 () from /lib64/libc.so.6 - 1 0x0000555558149e29 in CustomData_to_bmesh_block (source=0x7fffcf3a5708, dest=0x7fffd8811668, src_index=0, dest_block=0x7fffcf4d0010, use_default_init=true) at /home/zed/programmering/blender_master/blender/source/blender/blenkernel/intern/customdata.c:3315 #2 0x0000555557cb8571 in BM_mesh_bm_from_me (bm=0x7fffd8811508, me=0x7fffcf3a5508, params=0x7fffffffcd80) at /home/zed/programmering/blender_master/blender/source/blender/bmesh/intern/bmesh_mesh_conv.c:348 #3 0x00005555581fb361 in BKE_mesh_to_bmesh_ex (me=0x7fffcf3a5508, create_params=0x7fffffffcdc4, convert_params=0x7fffffffcd80) at /home/zed/programmering/blender_master/blender/source/blender/blenkernel/intern/mesh.c:712 #4 0x00005555581fb3f9 in BKE_mesh_to_bmesh (me=0x7fffcf3a5508, ob=0x7fffcf3d1608, add_key_index=false, params=0x7fffffffcdc4) at /home/zed/programmering/blender_master/blender/source/blender/blenkernel/intern/mesh.c:721 #5 0x000055555764cff3 in EDBM_mesh_make (ob=0x7fffcf3d1608, select_mode=4, add_key_index=false) at /home/zed/programmering/blender_master/blender/source/blender/editors/mesh/editmesh_utils.c:296 #6 0x0000555557734c88 in ED_object_editmode_enter_ex (bmain=0x7fffcf3a6308, scene=0x7fffe4f19008, ob=0x7fffcf3d1608, flag=0) at /home/zed/programmering/blender_master/blender/source/blender/editors/object/object_edit.c:573 - 7 0x000055555791a02e in ED_editors_init (C=0x7fffea058188) at /home/zed/programmering/blender_master/blender/source/blender/editors/util/ed_util.c:142 - 8 0x000055555722d120 in wm_file_read_post (C=0x7fffea058188, is_startup_file=false, is_factory_startup=false, reset_app_template=false) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_files.c:521 #9 0x000055555722d488 in WM_file_read (C=0x7fffea058188, filepath=0x7fffffffd020 "/tmp/bugs/shelf.blend", reports=0x7fffcf601a08) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_files.c:638 #10 0x00005555572305b8 in wm_file_read_opwrap (C=0x7fffea058188, filepath=0x7fffffffd020 "/tmp/bugs/shelf.blend", reports=0x7fffcf601a08, autoexec_init=true) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_files.c:1864 #11 0x0000555557230828 in wm_open_mainfile_exec (C=0x7fffea058188, op=0x7fffcf5d4648) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_files.c:1924 #12 0x00005555572234b7 in wm_operator_invoke (C=0x7fffea058188, ot=0x7fffe963d8a8, event=0x0, properties=0x7fffffffd600, reports=0x0, poll_only=false, use_last_properties=true) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:1352 #13 0x0000555557223cba in wm_operator_call_internal (C=0x7fffea058188, ot=0x7fffe963d8a8, properties=0x7fffffffd600, reports=0x0, context=6, poll_only=false, event=0x0) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:1585 #14 0x0000555557223d77 in WM_operator_name_call_ptr (C=0x7fffea058188, ot=0x7fffe963d8a8, context=6, properties=0x7fffffffd600) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:1597 #15 0x0000555557566af7 in ui_apply_but_funcs_after (C=0x7fffea058188) at /home/zed/programmering/blender_master/blender/source/blender/editors/interface/interface_handlers.c:770 #16 0x000055555757fc82 in ui_popup_handler (C=0x7fffea058188, event=0x7fffcc3edd88, userdata=0x7fffcecf8048) at /home/zed/programmering/blender_master/blender/source/blender/editors/interface/interface_handlers.c:9988 #17 0x000055555722113f in wm_handler_ui_call (C=0x7fffea058188, handler=0x7fffcfc4e7a8, event=0x7fffcc3edd88, always_pass=0) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:584 #18 0x00005555572260b8 in wm_handlers_do_intern (C=0x7fffea058188, event=0x7fffcc3edd88, handlers=0x7fffe4e52198) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:2469 #19 0x0000555557226a8f in wm_handlers_do (C=0x7fffea058188, event=0x7fffcc3edd88, handlers=0x7fffe4e52198) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:2698 #20 0x0000555557227cc3 in wm_event_do_handlers (C=0x7fffea058188) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm_event_system.c:3049 - 21 0x000055555721c71f in WM_main (C=0x7fffea058188) at /home/zed/programmering/blender_master/blender/source/blender/windowmanager/intern/wm.c:418 - 22 0x0000555557216e54 in main (argc=1, argv=0x7fffffffdd28) at /home/zed/programmering/blender_master/blender/source/creator/creator.c:505 ```

Jacques Lucke commented

2019-03-07 18:34:27 +01:00

Added subscriber: @JacquesLucke

Jacques Lucke commented

2019-03-07 18:34:27 +01:00

There seems to be a broken custom data layer of type CD_BWEIGHT, which data not have data (source->layers- [x]->data == NULL).

There seems to be a broken custom data layer of type `CD_BWEIGHT`, which data not have `data` (`source->layers- [x]->data == NULL`).

Marcin Twarowski commented

2019-03-08 09:28:21 +01:00

As I mentioned, if you append this object, do a copy of it, then you can enter edit mode of that copied object. However, if you save that copied object, restart Blender and open the file, you want be able to enter edit mode again.

Marcin Twarowski commented

2019-03-08 09:38:50 +01:00

I appended the mesh to 2.79a. It crashes when I try to enter edit mode. So I did a copy of the object. Saved, restarted Blender. Now edit mode works. I Appended that 2.79 mesh back to Blender 2.80. Saved, restarted Blender. Edit mode crashes Blender.

Philipp Oeser commented

2019-03-08 09:55:08 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2019-03-08 09:55:08 +01:00

get the same backtrace in #62324

regarding the CD_BWEIGHT thingie:
In the startup file, as soon as you set any Edge Bevel Weight in editmode, then enter objectmode, I am getting:
write_customdata error: layer '':29 - can't be written to file [which might already be the source of the problem...]

get the same backtrace in #62324 regarding the `CD_BWEIGHT` thingie: In the startup file, as soon as you set any `Edge Bevel Weight` in editmode, then enter objectmode, I am getting: `write_customdata error: layer '':29 - can't be written to file` [which might already be the source of the problem...]

Marcin Twarowski commented

2019-03-08 09:57:55 +01:00

Here's a file you can open but crashes when you enter edit mode: shelf_2.blend
Try this:

Convert to -> Mesh from Curve/Meta/Surf/Text
Now modifiers are applied.
You can enter edit mode.
Undo (ctrl+z).
Crash.

Here's a file you can open but crashes when you enter edit mode: [shelf_2.blend](https://archive.blender.org/developer/F6783586/shelf_2.blend) Try this: - Convert to -> Mesh from Curve/Meta/Surf/Text - Now modifiers are applied. - You can enter edit mode. - Undo (ctrl+z). - Crash.

Philipp Oeser commented

2019-03-08 10:14:07 +01:00

just dropping this here as well [actually I assume these two reports could be merged?]

In #62324#635400, @lichtwerk wrote:
quick bandaid would be still need to check if this could also be handled [here ]
P930: T62324_snippet



diff --git a/source/blender/blenloader/intern/writefile.c b/source/blender/blenloader/intern/writefile.c
index c2cd6f282e8..603e68c8771 100644
--- a/source/blender/blenloader/intern/writefile.c
+++ b/source/blender/blenloader/intern/writefile.c
@@ -2126,7 +2126,7 @@ static void write_customdata(
 		else if (layer->type == CD_MDISPS) {
 			write_mdisps(wd, count, layer->data, layer->flag & CD_FLAG_EXTERNAL);
 		}
-		else if (layer->type == CD_PAINT_MASK) {
+		else if (ELEM(layer->type, CD_PAINT_MASK, CD_BWEIGHT)) {
 			const float *layer_data = layer->data;
 			writedata(wd, DATA, sizeof(*layer_data) * count, layer_data);
 		}

this will then not crash / prevent the 'corrupted' CD_BWEIGHT, but it is probably best to also put in a security check in the unfortunate case where this layer is indeed corrupted...

just dropping this here as well [actually I assume these two reports could be merged?] > In #62324#635400, @lichtwerk wrote: > quick bandaid would be [still need to check if this could also be handled [here ]](https://developer.blender.org/diffusion/B/browse/master/source/blender/blenloader/intern/writefile.c$2141) > [P930: T62324_snippet](https://archive.blender.org/developer/P930.txt) ``` diff --git a/source/blender/blenloader/intern/writefile.c b/source/blender/blenloader/intern/writefile.c index c2cd6f282e8..603e68c8771 100644 --- a/source/blender/blenloader/intern/writefile.c +++ b/source/blender/blenloader/intern/writefile.c @@ -2126,7 +2126,7 @@ static void write_customdata( else if (layer->type == CD_MDISPS) { write_mdisps(wd, count, layer->data, layer->flag & CD_FLAG_EXTERNAL); } - else if (layer->type == CD_PAINT_MASK) { + else if (ELEM(layer->type, CD_PAINT_MASK, CD_BWEIGHT)) { const float *layer_data = layer->data; writedata(wd, DATA, sizeof(*layer_data) * count, layer_data); } ``` > > this will then not crash / prevent the 'corrupted' CD_BWEIGHT, but it is probably best to also put in a security check in the unfortunate case where this layer is indeed corrupted...

Benjamin A commented

2019-03-08 10:18:54 +01:00

Added subscriber: @standard_owl

Benjamin A commented

2019-03-08 10:18:54 +01:00

Same issue here (March 08, 02:42:38 - 0ba143a1d6).crashObject.blend. When opened with another version (7d792976e1 from 17/02/2019 which worked fine back then) it crashes as well when I try to enter edit mode.

Same issue here (March 08, 02:42:38 - 0ba143a1d675).[crashObject.blend](https://archive.blender.org/developer/F6783664/crashObject.blend). When opened with another version (7d792976e100 from 17/02/2019 which worked fine back then) it crashes as well when I try to enter edit mode.

Sebastian Parborg commented

2019-03-08 10:20:00 +01:00

Added subscriber: @Yolao