This bug was fixed in the package linux-oem-6.11 - 6.11.0-1023.23
---------------
linux-oem-6.11 (6.11.0-1023.23) noble; urgency=medium
* noble/linux-oem-6.11: 6.11.0-1023.23 -proposed tracker (LP:
#2111230)
* ACPICA: Add support for printing AML arguments when trace point enabled
(LP: #2111220)
- ACPICA: Add support for printing AML arguments when trace point enabled
* When the speaker volume is adjusted above 80%, noise occurs from the
speakers with cs42l43. (LP: #2110950)
- ASoC: intel/sdw_utils: Add volume limit to cs42l43 speakers
* Support Sony IMX471 camera sensor for Intel IPU7 platforms (LP: #2107320)
- SAUCE: media: ipu-bridge: Support imx471 sensor
- [Packaging] debian.oem/dkms-versions -- bump ipu6-drivers version
* Mediatek MT7920 WLAN card does not respect Wireless Radio Control in BIOS
(LP: #2109314)
- wifi: mt76: mt7921: add rfkill_poll for hardware rfkill
* The system with VMD enabled may encounter hang (LP: #2110178)
- SAUCE: PCI: vmd: Fix use-after-free bug in resource name assignment
* Fix divide by zero errors in DML2 (LP: #2106923)
- drm/amd/display: Protect FPU in dml2_init()/dml21_init()
- drm/amd/display: Protect FPU in dml2_validate()/dml21_validate()
- drm/amd/display: Protect FPU in dml21_copy()
* Not all monitors connected on the dock display correctly when the system
resumes from restart or suspend on AMD platform (LP: #2110095)
- drm/amd/display: use drm_warn instead of DRM_WARN
- drm/amd/display: Shift DMUB AUX reply command if necessary
- drm/amd/display: Fix the checking condition in dmub aux handling
- drm/amd/display: Remove incorrect checking in dmub aux handler
- drm/amd/display: Copy AUX read reply data whenever length > 0
- drm/amd/display: Fix wrong handling for AUX_DEFER case
* Support AMD Image Signal Processing (ISP) unit V4.0 (LP: #2110092)
- Revert "UBUNTU: [Config] Enable AMD_ISP4"
- Revert "UBUNTU: SAUCE: ispkernel 3.0 release"
- drm/amdgpu: Add MFD support for ISP I2C bus
- drm/amd/amdgpu: Add support for isp buffers
- SAUCE: ispkernel: 4.0 release
- SAUCE: fix amd-isp4 build failures
- [Config] Enable AMD_ISP4
* System will restart while resuming with SATA HDD or nvme installed with
password set (LP: #2110090)
- PCI: Explicitly put devices into D0 when initializing
* Privacy LED may not be turned on on OEM Renegade platform with Intel IPU7
camera (LP: #2106807)
- [Packaging] debian.oem/dkms-versions -- bump vision-drivers version
* Fix volume control no effect on HP EliteStudio AIO (LP: #2109539)
- ALSA: hda: Apply volume control on speaker+lineout for HP EliteStudio AIO
* Fix Mic Mute LED no function on HP G12 laptops with ACP7.0 platform
(LP: #2108954)
- ASoC: amd: acp: Remove redundant acp70 chip->name
- ASoC: amd: acp: Implement acp_common_hw_ops support for acp platforms
- ASoC: amd: acp: Refactor dmic-codec platform device creation
-- Chia-Lin Kao (AceLan) <[email protected]> Mon, 19 May 2025
14:27:43 +0800
** Changed in: linux-oem-6.11 (Ubuntu Noble)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/2106923
Title:
Fix divide by zero errors in DML2
Status in HWE Next:
New
Status in linux package in Ubuntu:
Invalid
Status in linux-oem-6.11 package in Ubuntu:
Invalid
Status in linux source package in Noble:
Invalid
Status in linux-oem-6.11 source package in Noble:
Fix Released
Status in linux source package in Plucky:
Fix Released
Status in linux-oem-6.11 source package in Plucky:
Invalid
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:
v6.15-rc2
366e77cd4923 drm/amd/display: Protect FPU in dml2_validate()/dml21_validate()
afcdf51d97cd drm/amd/display: Protect FPU in dml2_init()/dml21_init()
4408b59eeacf drm/amd/display: Protect FPU in dml21_copy()
[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.
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