Random "Kernel panic - not syncing" with cirros 0.3.5 image

[Matt Riedemann]

http://logs.openstack.org/22/518022/8/check/legacy-tempest-dsvm-neutron-full/81721fe/job-output.txt.gz#_2017-11-30_21_57_15_838147

2017-11-30 21:57:15.837682 | primary | [ 1.052065] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
2017-11-30 21:57:15.837744 | primary | [ 1.064065] ..MP-BIOS bug: 8254 timer not connected to IO-APIC
2017-11-30 21:57:15.837788 | primary | [ 1.064065] ...trying to set up timer (IRQ0) through the 8259A ...
2017-11-30 21:57:15.837829 | primary | [ 1.064065] ..... (found apic 0 pin 2) ...
2017-11-30 21:57:15.837858 | primary | [ 1.072066] ....... failed.
2017-11-30 21:57:15.837895 | primary | [ 1.072066] ...trying to set up timer as Virtual Wire IRQ...
2017-11-30 21:57:15.837926 | primary | [ 1.080066] ..... failed.
2017-11-30 21:57:15.838036 | primary | [ 1.080066] ...trying to set up timer as ExtINT IRQ...
2017-11-30 21:57:15.838072 | primary | [ 1.092067] ..... failed :(.
2017-11-30 21:57:15.838147 | primary | [ 1.092067] Kernel panic - not syncing: IO-APIC + timer doesn't work! Boot with apic=debug and send a report. Then try booting with the 'noapic' option.
2017-11-30 21:57:15.838181 | primary | [ 1.092067]
2017-11-30 21:57:15.838236 | primary | [ 1.092067] Pid: 1, comm: swapper/0 Not tainted 3.2.0-80-virtual #116-Ubuntu
2017-11-30 21:57:15.838277 | primary | [ 1.092067] Call Trace:
2017-11-30 21:57:15.838311 | primary | [ 1.092067] [<ffffffff8164639e>] panic+0x91/0x1a4
2017-11-30 21:57:15.838361 | primary | [ 1.092067] [<ffffffff81d0b1ae>] setup_IO_APIC+0x651/0x693
2017-11-30 21:57:15.838405 | primary | [ 1.092067] [<ffffffff81d07651>] native_smp_prepare_cpus+0x1c4/0x207
2017-11-30 21:57:15.838439 | primary | [ 1.092067] [<ffffffff81cf9ca4>] kernel_init+0x8c/0x169
2017-11-30 21:57:15.838497 | primary | [ 1.092067] [<ffffffff81669234>] kernel_thread_helper+0x4/0x10
2017-11-30 21:57:15.838560 | primary | [ 1.092067] [<ffffffff81cf9c18>] ? start_kernel+0x3c7/0x3c7
2017-11-30 21:57:15.838620 | primary | [ 1.092067] [<ffffffff81669230>] ? gs_change+0x13/0x13

Looks like we've been using cirros 0.3.5 for awhile now:

https://github.com/openstack-dev/devstack/commit/9f2dcd333103553626db1924a019e151e3e7252e

http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22Kernel%20panic%20-%20not%20syncing%5C%22%20AND%20message%3A%5C%22timer%20doesn't%20work%5C%22%20AND%20tags%3A%5C%22console%5C%22&from=7d

10 hits in 7 days, check and gate, all failures.

[Dr. Jens Harbott (j-harbott)]

Seems this goes back to https://bugs.launchpad.net/cirros/+bug/1312199 , I'll ping smoser.