https://bugzilla.suse.com/show_bug.cgi?id=1220119 Bug ID: 1220119 Summary: Some tests on o3 triggers dmesg "clocksource: timekeeping watchdog on CPU0: Marking clocksource 'tsc' as unstable because the skew is too large:" Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: petr.vorel@suse.com QA Contact: qa-bugs@suse.de CC: jwiesner@suse.com Target Milestone: --- Found By: --- Blocker: --- 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. -- You are receiving this mail because: You are on the CC list for the bug.