Default Comment by Bridge
** Attachment added: "Boot_log"
** Changed in: ubuntu
Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage
** Package changed: ubuntu => linux (Ubuntu)
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[Ubuntu 18.04] Guest fails to boot with "console=ttyS0,115200"
included in kernel param
Status in linux package in Ubuntu:
== Comment: #0 - Balamuruhan S <balamuruh...@in.ibm.com> - 2018-03-29
Guest fails to boot with Call Trace by using "console=ttyS0,115200" in kernel
Using latest kernel suggested by Bug 166023 in Host and Guest
Contact Information = Balamuruhan S / balamuruh...@in.ibm.com
# uname -a Linux ltc-boston17 4.15.0-12-generic #13 SMP Tue Mar 27 08:20:19
CDT 2018 ppc64le ppc64le ppc64le GNU/Linux
Machine Type = Boston
A debugger is not configured
---Steps to Reproduce---
1. Have a healthy guest booted with latest kernel
2. Boot the guest and enter grub menu to edit kernel param
2. append "console=ttyS0,115200" to kernel param and try to boot
3. Guest fails to boot and goes to shutoff state with Call Trace
[ 9.184631] random: crng init done
[ 9.330927] Kernel panic - not syncing: Attempted to kill init!
[ 9.332928] CPU: 25 PID: 1 Comm: init Not tainted 4.15.0-12-generic #13
[ 9.334375] Call Trace:
[ 9.335077] [c0000007fd10bc30] [c000000000ce991c] dump_stack+0xb0/0xf4
[ 9.336334] [c0000007fd10bc70] [c00000000010b4a0] panic+0x148/0x328
[ 9.337339] [c0000007fd10bd10] [c000000000112888] do_exit+0xc78/0xc80
[ 9.338359] [c0000007fd10bdd0] [c000000000112960] do_group_exit+0x60/0x100
[ 9.339216] [c0000007fd10be10] [c000000000112a24] SyS_exit_group+0x24/0x30
[ 9.340113] [c0000007fd10be30] [c00000000000b184] system_call+0x58/0x6c
System Dump Info:
The system is not configured to capture a system dump.
*Additional Instructions for Balamuruhan S / balamuruh...@in.ibm.com:
-Post a private note with access information to the machine that the bug is
-Attach sysctl -a output output to the bug.
== Comment: #7 - Balamuruhan S <balamuruh...@in.ibm.com> - 2018-04-13
I have hit it while booting already installed guest from qcow2 and edited its
commandline from grub menu, so I have attached the full boot log.
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