Fix divide by zero errors in DML2
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| HWE Next |
New
|
Undecided
|
Unassigned | ||
| linux (Ubuntu) |
Invalid
|
High
|
Unassigned | ||
| Noble |
Invalid
|
Undecided
|
Unassigned | ||
| Plucky |
In Progress
|
Undecided
|
AceLan Kao | ||
| linux-oem-6.11 (Ubuntu) |
Invalid
|
High
|
Edoardo Canepa | ||
| Noble |
In Progress
|
Undecided
|
AceLan Kao | ||
| Plucky |
Invalid
|
Undecided
|
Unassigned | ||
Bug Description
[Impact]
Random crashes have been reported on GPUs that use DML2 (Ryzen AI APUs and Radeon 9000 dGPU). The crashes are root caused to corruption in registers used for floating point code.
[Fix]
They are caused by a lack of FP context protection around that code. They are fixed by these 3 commits:
https:/
https:/
https:/
[Test]
1. Install ubuntu with 6.11 kernel on AMD platform
2. Run reboot test around 300 times
3. The system should not hang while booting up
[Where problems could occur]
The 3 commits are straightforward for the protection, and didn't involve any functional changes.
| tags: | added: originate-from-2106922 |
| Changed in linux-oem-6.11 (Ubuntu): | |
| importance: | Undecided → High |
| assignee: | nobody → Edoardo Canepa (ecanepa) |
| Changed in linux-oem-6.11 (Ubuntu): | |
| status: | New → Triaged |
| Changed in linux-oem-6.11 (Ubuntu): | |
| status: | Triaged → Confirmed |
| Changed in linux (Ubuntu): | |
| status: | New → Confirmed |
| importance: | Undecided → High |
| Changed in linux (Ubuntu Noble): | |
| status: | New → Invalid |
| Changed in linux (Ubuntu Plucky): | |
| status: | New → In Progress |
| assignee: | nobody → AceLan Kao (acelankao) |
| Changed in linux-oem-6.11 (Ubuntu Noble): | |
| status: | New → In Progress |
| assignee: | nobody → AceLan Kao (acelankao) |
| Changed in linux-oem-6.11 (Ubuntu Plucky): | |
| status: | New → Invalid |
| description: | updated |
| tags: | added: jira-stella-1107 oem-priority stella |
| Changed in linux (Ubuntu): | |
| status: | Confirmed → Invalid |
| Changed in linux-oem-6.11 (Ubuntu): | |
| status: | Confirmed → Invalid |
