** Changed in: linux (Ubuntu Disco)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1828868
Title:
crashdump fails on HiSilicon D06
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Disco:
Fix Committed
Bug description:
[Impact]
The crashdump kernel fails to boot on HiSilicon D06, and likely other SMMUv3
ARM systems.
[Test Case]
sudo apt install linux-crashdump
Adjust crashkernel= parameter in /etc/default/grub.d/kdump-tools.cfg as
appropriate (for D06, crashkernel=512M)
sudo reboot (needed to add crashkernel= param)
echo 1 | sudo tee /proc/sys/kernel/sysrq
echo c | sudo tee /proc/sysrq-trigger
[Fix]
3f54c447df34f iommu/arm-smmu-v3: Don't disable SMMU in kdump kernel
[Regression Risk]
Restricted to SMMUv3 arm64-based systems.
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