This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed- bionic'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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 Bionic: Fix Committed Status in linux source package in Cosmic: Fix Committed 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) Add "arm_smmu_v3.disable_bypass=1" to the kernel command line sudo reboot (needed to add crashkernel= param) echo 1 | sudo tee /proc/sys/kernel/sysrq echo c | sudo tee /proc/sysrq-trigger (Note to self - the following is needed on our systems w/ Mellanox adapters: ubuntu@d06-3:~$ grep blacklist /etc/default/kdump-tools KDUMP_CMDLINE_APPEND="nr_cpus=1 systemd.unit=kdump-tools-dump.service module_blacklist=mlx5_core") [Fix] 3f54c447df34f iommu/arm-smmu-v3: Don't disable SMMU in kdump kernel [Regression Risk] Restricted to SMMUv3 arm64-based systems. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1828868/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
