This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1890867
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: bionic
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https://bugs.launchpad.net/bugs/1890867
Title:
kernel trace of 18.04.5 daily image (20200806.1) on Hisilicon D05
arm64 arch
Status in linux package in Ubuntu:
Incomplete
Bug description:
image: 18.04.5 daily image (20200806.1) bionic-live-server-arm64.iso
kernel: 4.15.0-112-generic #113-Ubuntu
platform: Hisilicon D05 arm64 arch
[Reproducing Steps]
1. setup pxe boot by following
https://discourse.ubuntu.com/t/netbooting-the-live-server-installer/14510
2. pxe boot the machine with the image
[Expected Result]
Boot to subiquity
[Actual Result]
Kernel trace happened during booting process. Reproducing rate: 2 out of 2.
[ 6.643543] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.15.0-112-generic
#113-Ubuntu
[ 6.651271] Hardware name: Hisilicon D05/BC11SPCD, BIOS 1.50 06/01/2018
[ 6.657871] Call trace:
[ 6.660308] dump_backtrace+0x0/0x198
[ 6.663957] show_stack+0x24/0x30
[ 6.667261] dump_stack+0x98/0xbc
[ 6.670563] panic+0x128/0x2a4
[ 6.673606] mount_block_root+0x210/0x2e8
[ 6.677603] mount_root+0x7c/0x8c
[ 6.680904] prepare_namespace+0x144/0x1dc
[ 6.684987] kernel_init_freeable+0x218/0x23c
[ 6.689331] kernel_init+0x18/0x110
[ 6.692806] ret_from_fork+0x10/0x18
[ 6.696428] SMP: stopping secondary CPUs
[ 6.700345] Kernel Offset: disabled
[ 6.703821] CPU features: 0x00002008
[ 6.707382] Memory Limit: none
[ 6.710438] ---[ end Kernel panic - not syncing: VFS: Unable to mount root
fs on unknown-block(0,0)
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