| Bug ID | 97524 |
|---|---|
| Summary | Invalid sampler settings cause full GPU reset |
| Product | Mesa |
| Version | git |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | minor |
| Priority | medium |
| Component | Drivers/Gallium/radeonsi |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | dark_sylinc@yahoo.com.ar |
| QA Contact | dri-devel@lists.freedesktop.org |
Created attachment 126091 [details]
Bug repro
Running invalid the following GL settings hangs Mesa pretty badly. Sometimes it
says stuck on ring(0)/(3), other times it just hangs; GPU tries to reset but
does a really poor job (at least I can blindly go to tty1 via Ctrl+Alt+F1 then
reboot via Ctrl+Alt+Supr).
Attachment provided to repro the bug.
What is causing it:
Vertex Shader must use samplerBuffer on binding point 0.
Pixel Shader must use samplerCube on binding point 0.
Bind a TBO to binding point 0.
What happens:
Near full system hang, it becomes really unstable. System can be soft-rebooted
but that's it.
What should happen:
All other GPU drivers I tested with handle this gracefully by raising a
GL_INVALID_OPERATION error and continuing rendering the rest normally.
Version tested: Latest git 22cec6dc5e5a3060bc87f4a92871b4f6eef04632
I'm assigning a low priority since this GL setting combination is invalid to
begin with and I want to believe software isn't shipped like this (though
considering other GPU drivers allow to ignore the problem, I wouldn't be fully
surprised if there is faulty software out there...); though I believe the
system shouldn't hang because of this.
GL_VERSION = 4.3.0.0
GL_VENDOR = X.Org
GL_RENDERER = Gallium 0.4 on AMD CAPE VERDE (DRM 2.45.0 / 4.7.0-040700-generic,
LLVM 3.9.0)
uname -r
4.7.0-040700-generic
Cheers
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