Use after free bug - file browser #63348
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Milestone 1: Basic, Local Asset Browser
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Reference: blender/blender#63348
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System Information
Operating system: Darwin-15.6.0-x86_64-i386-64bit 64 Bits
Graphics card: Intel Iris OpenGL Engine Intel Inc. 4.1 INTEL-10.14.73
Blender Version
Broken: version: 2.80 (sub 54), branch: master, commit date: 2019-04-06 12:26, hash:
cc73d59ad5
with ASAN.Worked: (optional)
Short description of error
When clicking and dragging files around like crazy, a double-free may occur.
Exact steps for others to reproduce the error
Clicking with all mouse buttons, dragging around like crazy may reproduce.
Attached is a Video, but I wasn't able to isolate some specific steps.
This bug is very hard to reproduce reliably.
Notice in the video:
@00:08
- I'm dragging a folder, but have no mouse button down@00:35
- Here the bug "starts". Blender becomes unresponsive and eventually crashes.I've attached the crash log for the crash in the video.
I've also three additional crash logs, each has a slightly different stacktrace.
blender_file_browser_double_free_2_shorted.mp4
crashlog_from_video.txt
crashlog_3.txt
crashlog_2.txt
crashlog_1.txt
Added subscriber: @intrigus-3
Added subscribers: @WilliamReynish, @ZedDB
I can not reproduce this on my side (linux with asan).
@WilliamReynish can you reproduce this on mac?
I don't know if I have the dexterity to reproduce that! :)
@ZedDB The goal is to spam all available mouse buttons (left, right, middle) while dragging the mouse around like crazy :P
Reproduced this also on Linux with:
System Information
Operating system: Linux-4.15.0-1011-kvm-x86_64-with-Ubuntu-18.04-bionic 64 Bits
Graphics card: llvmpipe (LLVM 7.0, 128 bits) VMware, Inc. 3.3 (Core Profile) Mesa 18.2.2
Blender Version
Broken: version: 2.80 (sub 54), branch: master, commit date: 2019-04-07 15:02, hash:
75f551faca
crashlog_linux.txt
Added subscriber: @joshua.sterner
Removed subscriber: @joshua.sterner
Added subscriber: @joshua.sterner
Added subscriber: @DanielBystedt
I can't reproduce this issue. Dragged around both folders and png's like crazy in the file browser
System Information
Operating system: Windows-10-10.0.17763-SP0 64 Bits
Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 432.00
Blender Version
Broken: version: 2.82 (sub 6), branch: master, commit date: 2019-12-23 08:34, hash:
708045eb40
Added subscriber: @ideasman42
While I wasn't able to cause a crash or error.
Dragging a directory & activating box select is quite easy to redo. Fixing this may resolve the crash.
Added subscriber: @JacquesLucke
I'm not able to reproduce the crash within 2 min on Ubuntu 19.10.
Added subscriber: @JulianEisel
Changed status from 'Needs Developer To Reproduce' to: 'Archived'
I wasn't able to reproduce this on macOS Catalina. I don't see a way to fix this without being able to reproduce it really, so I don't see a point in keeping this open.
Removed subscriber: @DanielBystedt
Added subscriber: @DanielBystedt
Removed subscriber: @DanielBystedt