Compositing causes access violation when rendering from command line #46605

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Greg Zaal · 2015-10-26T12:53:30+01:00

Greg Zaal commented

2015-10-26 12:53:30 +01:00

System Information

Windows 7 64 bit
Quadro 2000D

I tested it on a few similar PCs (on the same network), all of them crash. Will test it on my home PC as well later.

Blender Version
Broken: 2.76 official & recent master from buildbot(48f7dd6)

Short description of error
When rendering an animation from a certain file from the command line, it crashes ~50% of the time with Error: EXCEPTION_ACCESS_VIOLATION

Some frames it completes, some frames it crashes. It's not consistent about which frames do or don't finish.

It seems to be related to compositing, as the crash happens when the render finishes, and if I disable compositing from the post-processing panel then it does not crash at all. But the comp setup is simple (just saving out layers and passes), and there doesn't seem to be any particular node at fault.

Exact steps for others to reproduce the error
Blend file: Sh01_tst.blend

Render file from command line with blender -b Sh01_tst.blend -a and it should crash after a few frames (sometimes the first one, sometimes the 10th, it's really not consistent).
Open blender UI, load the file and render the animation. It probably won't crash, although on two PCs it did crash after a while but I can't repeat it.
Disable compositing in post-processing panel, save the file and render it from the command line again. It won't crash now.

**System Information** - Windows 7 64 bit - Quadro 2000D I tested it on a few similar PCs (on the same network), all of them crash. Will test it on my home PC as well later. **Blender Version** Broken: 2.76 official & recent master from buildbot(48f7dd6) **Short description of error** When rendering an animation from a certain file from the command line, it crashes ~50% of the time with `Error: EXCEPTION_ACCESS_VIOLATION` Some frames it completes, some frames it crashes. It's not consistent about which frames do or don't finish. It seems to be related to compositing, as the crash happens when the render finishes, and if I disable compositing from the post-processing panel then it does not crash at all. But the comp setup is simple (just saving out layers and passes), and there doesn't seem to be any particular node at fault. **Exact steps for others to reproduce the error** Blend file: [Sh01_tst.blend](https://archive.blender.org/developer/F247541/Sh01_tst.blend) - Render file from command line with `blender -b Sh01_tst.blend -a` and it should crash after a few frames (sometimes the first one, sometimes the 10th, it's really not consistent). - Open blender UI, load the file and render the animation. It probably won't crash, although on two PCs it did crash after a while but I can't repeat it. - Disable compositing in post-processing panel, save the file and render it from the command line again. It won't crash now.

Greg Zaal commented

2015-10-26 12:53:30 +01:00

Changed status to: 'Open'

Greg Zaal commented

2015-10-26 12:53:30 +01:00

Added subscriber: @GregZaal

Ray molenkamp commented

2015-10-26 20:10:41 +01:00

Added subscriber: @LazyDodo

Ray molenkamp commented

2015-10-26 20:10:41 +01:00

looks like a race condition in https://git.blender.org/gitweb/gitweb.cgi/blender.git/blob/HEAD:/source/blender/render/intern/source/pipeline.c#l2108

R.i.infostr points to garbage once it hits

https://git.blender.org/gitweb/gitweb.cgi/blender.git/blob/HEAD:/source/blender/render/intern/source/pipeline.c#l179

even though i can see NULL was passed into it, so some other thread must have come along and is in the process of messing with it?

looks like a race condition in https://git.blender.org/gitweb/gitweb.cgi/blender.git/blob/HEAD:/source/blender/render/intern/source/pipeline.c#l2108 R.i.infostr points to garbage once it hits https://git.blender.org/gitweb/gitweb.cgi/blender.git/blob/HEAD:/source/blender/render/intern/source/pipeline.c#l179 even though i can see NULL was passed into it, so some other thread must have come along and is in the process of messing with it?

blender-admin commented

2015-10-27 17:03:22 +01:00

This issue was referenced by 242246e9fc

This issue was referenced by 242246e9fc954f66ff78161572948da6689298be

Sergey Sharybin commented

2015-10-27 17:04:28 +01:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2015-10-27 17:04:28 +01:00

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Compositing causes access violation when rendering from command line #46605