Scaling up 1x1 pixel image reads past buffer bounds #70356
Labels
No Label
Interest
Alembic
Interest
Animation & Rigging
Interest
Asset Browser
Interest
Asset Browser Project Overview
Interest
Audio
Interest
Automated Testing
Interest
Blender Asset Bundle
Interest
BlendFile
Interest
Collada
Interest
Compatibility
Interest
Compositing
Interest
Core
Interest
Cycles
Interest
Dependency Graph
Interest
Development Management
Interest
EEVEE
Interest
EEVEE & Viewport
Interest
Freestyle
Interest
Geometry Nodes
Interest
Grease Pencil
Interest
ID Management
Interest
Images & Movies
Interest
Import Export
Interest
Line Art
Interest
Masking
Interest
Metal
Interest
Modeling
Interest
Modifiers
Interest
Motion Tracking
Interest
Nodes & Physics
Interest
OpenGL
Interest
Overlay
Interest
Overrides
Interest
Performance
Interest
Physics
Interest
Pipeline, Assets & IO
Interest
Platforms, Builds & Tests
Interest
Python API
Interest
Render & Cycles
Interest
Render Pipeline
Interest
Sculpt, Paint & Texture
Interest
Text Editor
Interest
Translations
Interest
Triaging
Interest
Undo
Interest
USD
Interest
User Interface
Interest
UV Editing
Interest
VFX & Video
Interest
Video Sequencer
Interest
Virtual Reality
Interest
Vulkan
Interest
Wayland
Interest
Workbench
Interest: X11
Legacy
Blender 2.8 Project
Legacy
Milestone 1: Basic, Local Asset Browser
Legacy
OpenGL Error
Meta
Good First Issue
Meta
Papercut
Meta
Retrospective
Meta
Security
Module
Animation & Rigging
Module
Core
Module
Development Management
Module
EEVEE & Viewport
Module
Grease Pencil
Module
Modeling
Module
Nodes & Physics
Module
Pipeline, Assets & IO
Module
Platforms, Builds & Tests
Module
Python API
Module
Render & Cycles
Module
Sculpt, Paint & Texture
Module
Triaging
Module
User Interface
Module
VFX & Video
Platform
FreeBSD
Platform
Linux
Platform
macOS
Platform
Windows
Priority
High
Priority
Low
Priority
Normal
Priority
Unbreak Now!
Status
Archived
Status
Confirmed
Status
Duplicate
Status
Needs Info from Developers
Status
Needs Information from User
Status
Needs Triage
Status
Resolved
Type
Bug
Type
Design
Type
Known Issue
Type
Patch
Type
Report
Type
To Do
No Milestone
No project
No Assignees
6 Participants
Notifications
Due Date
No due date set.
Dependencies
No dependencies set.
Reference: blender/blender#70356
Loading…
Reference in New Issue
No description provided.
Delete Branch "%!s(<nil>)"
Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?
This Python script causes an ASAN error:
Although this isn't limited to Python, the error happens when
IMB_scaleImBuf
is called on a 1x1 pixel image from anywhere in Blender.asan_imbuf.txt
Currently the function assumes there is always a 'next' pixel.
Added subscriber: @ideasman42
#89868 was marked as duplicate of this issue
Added subscriber: @pedroreis.ad
I can't replicate this on my machine, could you provide some more instructions? It runs the script fine on my PC, so I might be doing something wrong
The error happens with address sanitizer enabled, use
WITH_COMPILER_ASAN
, although it's not available on all platforms.Just from checking the code you can see it assumes a second pixel exists.
Oh, I hadn't used that flag for the compilation, thanks! What would be the expected outcome of this, I don't quite understand what is the ImBuf structure, even after toying with it this summer.
Added subscriber: @dr.sybren
Changed status from 'Confirmed' to: 'Needs User Info'
I can't reproduce this in current master (
be8879718e
), even withWITH_COMPILER_ASAN
. @ideasman42 is this still an issue?Tested and it's still an issue, although since this report 'BILINEAR' needs to be passed to redo this error (updated code snipped).
Changed status from 'Needs User Info' to: 'Confirmed'
Added subscribers: @blendersamsonov, @deadpin
This issue was referenced by
1a1510a3a0
This issue was referenced by
41bd164e4c
This issue was referenced by
38131cc5e5
Changed status from 'Confirmed' to: 'Resolved'