** Description changed:
[ Impact ]
Intel Battlemage xe GPU (8086:e212) crashes during system resume with
NULL pointer dereference in xe_guc_ads_populate_post_load(), making
suspend/resume non-functional on affected systems.
Root cause: Noble 6.17 kernels have commit 59cebf0bdff48 but are missing
its prerequisite commit 1313351e71181. Without proper forcewake handling,
MMIO register access causes hardware corruption.
[ Fix ]
Cherry-pick upstream commit from v6.18-rc1:
- 1313351e71181 ("drm/xe: make xe_gt_idle_disable_c6() handle the forcewake
internally")
[ Test Plan ]
1. System: Lenovo ThinkStation P3 Ultra G2 with Battlemage dGPU (8086:e212)
2. Reproduce: rtcwake -m mem -s 10
3. Verify: System resumes successfully without crashes
[ Where problems could occur ]
- Low risk - change is localized to xe driver GT idle/power management, only
- affects suspend/resume path. Commit is from mainline v6.18-rc1 with upstream
- review.
+ It may break xe driver GT idle/power management, affects suspend/resume path.
Commit is from mainline v6.18-rc1.
** Also affects: linux (Ubuntu Resolute)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.17 (Ubuntu Resolute)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.17 (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Questing)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.17 (Ubuntu Questing)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Noble)
Status: New => Won't Fix
** Description changed:
[ Impact ]
Intel Battlemage xe GPU (8086:e212) crashes during system resume with
NULL pointer dereference in xe_guc_ads_populate_post_load(), making
suspend/resume non-functional on affected systems.
Root cause: Noble 6.17 kernels have commit 59cebf0bdff48 but are missing
its prerequisite commit 1313351e71181. Without proper forcewake handling,
MMIO register access causes hardware corruption.
[ Fix ]
Cherry-pick upstream commit from v6.18-rc1:
- 1313351e71181 ("drm/xe: make xe_gt_idle_disable_c6() handle the forcewake
internally")
[ Test Plan ]
1. System: Lenovo ThinkStation P3 Ultra G2 with Battlemage dGPU (8086:e212)
2. Reproduce: rtcwake -m mem -s 10
3. Verify: System resumes successfully without crashes
[ Where problems could occur ]
It may break xe driver GT idle/power management, affects suspend/resume path.
Commit is from mainline v6.18-rc1.
+
+ The dGPU is not fully certified on v6.8 kernel, so SRU for questing and
+ oem-6.17.
** Changed in: linux (Ubuntu Questing)
Status: New => In Progress
** Changed in: linux (Ubuntu Resolute)
Status: New => Fix Released
** Changed in: linux-oem-6.17 (Ubuntu Questing)
Status: New => Invalid
** Changed in: linux-oem-6.17 (Ubuntu Resolute)
Status: New => Invalid
** Changed in: linux-oem-6.17 (Ubuntu Noble)
Status: New => In Progress
** Changed in: hwe-next
Assignee: (unassigned) => AaronMa (mapengyu)
** Changed in: hwe-next
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Questing)
Importance: Undecided => Medium
** Changed in: linux-oem-6.17 (Ubuntu Noble)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/2141377
Title:
[SRU]Fix xe GPU suspend/resume crash on Battlemage
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