Some tests running on o3 (openQA instance on https://openqa.opensuse.org/)
triggers in dmesg. All tests run in VM via qemu.
This is on x86_64 on my private openQA worker by ltp_net_tcp_cmds, triggered
for 2 tests: arp and host (both tests did not fail):
OpenQA::run_ltp.pm: Starting ipneigh01_arp
[ 410.818828][ C0] clocksource: timekeeping watchdog on CPU0: Marking
clocksource 'tsc' as unstable because the skew is too large:
[ 410.820365][ C0] clocksource: 'kvm-clock' wd_nsec:
506724586 wd_now: 610448443a wd_last: 60e6144350 mask: ffffffffffffffff
[ 410.821824][ C0] clocksource: 'tsc' cs_nsec:
49302930542 cs_now: 17c1364ba0a cs_last: 153fdc32526 mask: ffffffffffffffff
[ 410.823293][ C0] clocksource: Clocksource 'tsc'
skewed 48796205956 ns (48796 ms) over watchdog 'kvm-clock' interval of
506724586 ns (506 ms)
[ 410.824843][ C0] clocksource: 'kvm-clock' (not
'tsc') is current clocksource.
[ 410.825707][ C0] tsc: Marking TSC unstable due to clocksource watchdog
[ 411.109710][T28135] Initializing XFRM netlink socket
OpenQA::run_ltp.pm: Starting ipneigh01_ip
OpenQA::run_ltp.pm: Starting arping01
OpenQA::run_ltp.pm: Starting clockdiff01
OpenQA::run_ltp.pm: Starting ftp
OpenQA::run_ltp.pm: Starting host
[ 410.818845][ C0] clocksource: timekeeping watchdog on CPU0: Marking
clocksource 'tsc' as unstable because the skew is too large:
[ 410.820687][ C0] clocksource: 'kvm-clock' wd_nsec:
506741379 wd_now: 61044885d3 wd_last: 60e6144350 mask: ffffffffffffffff
[ 410.821794][ C0] clocksource: 'tsc' cs_nsec:
804834172 cs_now: 154a546a082 cs_last: 153fdc32526 mask: ffffffffffffffff
[ 410.822919][ C0] clocksource: Clocksource 'tsc'
skewed 298092793 ns (298 ms) over watchdog 'kvm-clock' interval of 506741379 ns
(506 ms)
[ 410.824088][ C0] clocksource: 'kvm-clock' (not
'tsc') is current clocksource.
[ 410.824768][ C0] tsc: Marking TSC unstable due to clocksource watchdog
[ 411.126759][T28138] Initializing XFRM netlink socket
Also, originally I noted this on ltp_net_tcp_cmds running on ppc64le on o3
(kernel tests in https://openqa.opensuse.org/group_overview/32), where host
test keeps failing (but arp test is working), I don't see it on
ltp_net_tcp_cmds on x86_64 on o3.
I was not able to trigger this on VM on my laptop (x86_64).
Others found that systemd-networkd test on Tumbleweed on x86_64
(https://openqa.opensuse.org/group_overview/1):
[ 570.754611][ C0] Showing busy workqueues and worker pools:
[ 570.755654][ C0] workqueue events: flags=0x0
[ 570.756580][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
refcnt=2
[ 570.756586][ C0] pending: drm_fb_helper_damage_work
[ 570.759551][ C0] sysrq: Show Blocked State
zDBFr-0-
[ 311.682306][ C0] clocksource: timekeeping watchdog on CPU0: Marking
clocksource 'tsc' as unstable because the skew is too large:
[ 311.684482][ C0] clocksource: 'kvm-clock' wd_nsec:
621509306 wd_now: 49d9caac63 wd_last: 49b4bf31a9 mask: ffffffffffffffff
[ 311.686513][ C0] clocksource: 'tsc' cs_nsec:
952336665 cs_now: a3a422af12 cs_last: a327415f8e mask: ffffffffffffffff
[ 311.688559][ C0] clocksource: Clocksource 'tsc'
skewed 330827359 ns (330 ms) over watchdog 'kvm-clock' interval of 621509306 ns
(621 ms)
[ 311.690452][ C0] clocksource: 'kvm-clock' (not
'tsc') is current clocksource.
[ 311.691559][ C0] tsc: Marking TSC unstable due to clocksource watchdog
Test runs also on aarch64, but error is not there.
Is it a problem of openQA setup? There are other bugs.