Ubuntu
linux-hwe package

timer in ubuntu_kvm_unit_tests failed on X-hwe ARM64 ThunderX

Bug #1828158 reported by Po-Hsu Lin
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
ubuntu-kernel-tests
New
Undecided
Unassigned
linux-hwe (Ubuntu)
New
Undecided
Unassigned

Bug Description

Test skipped on Moonshot ARM64:
SKIP timer (KVM acceleration is probably not supported)

But failed on ThunderX instead:
FAIL: ptimer-busy-loop: interrupt received after TVAL/WFI

# TESTNAME=timer TIMEOUT=2s ACCEL= ./arm/run arm/timer.flat -smp 1
timeout -k 1s --foreground 2s /usr/bin/qemu-system-aarch64 -nodefaults -machine virt,gic-version=host,accel=kvm -cpu host -device virtio-serial-device -device virtconsole,chardev=ctd -chardev testdev,id=ctd -device pci-testdev -display none -serial stdio -kernel arm/timer.flat -smp 1 # -initrd /tmp/tmp.j0n8ycjpmW
CNTFRQ_EL0 : 0x0000000005f5e100
CNTPCT_EL0 : 0x00000023cc22210f
CNTP_CTL_EL0 : 0x0000000000000004
CNTP_CVAL_EL0: 0x0000000000000000
CNTVCT_EL0 : 0x00000000007c1236
CNTV_CTL_EL0 : 0x0000000000000000
CNTV_CVAL_EL0: 0x0000000000000000
PASS: vtimer-busy-loop: not pending before
PASS: vtimer-busy-loop: interrupt signal pending
INFO: vtimer-busy-loop: After timer: 0x0000000000986769
INFO: vtimer-busy-loop: Expected : 0x0000000000986768
INFO: vtimer-busy-loop: Difference : 0 us
PASS: vtimer-busy-loop: latency within 10 ms
PASS: vtimer-busy-loop: interrupt received
PASS: vtimer-busy-loop: interrupt received after TVAL/WFI
PASS: vtimer-busy-loop: timer has expired (-7286)
PASS: ptimer-busy-loop: not pending before
PASS: ptimer-busy-loop: interrupt signal pending
INFO: ptimer-busy-loop: After timer: 0x00000023cc81dceb
INFO: ptimer-busy-loop: Expected : 0x00000023cc81cf88
INFO: ptimer-busy-loop: Difference : 34 us
PASS: ptimer-busy-loop: latency within 10 ms
PASS: ptimer-busy-loop: interrupt received
FAIL: ptimer-busy-loop: interrupt received after TVAL/WFI
PASS: ptimer-busy-loop: timer has expired (-5367)
SUMMARY: 12 tests, 1 unexpected failures

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.15.0-48-generic 4.15.0-48.51~16.04.1
ProcVersionSignature: User Name 4.15.0-48.51~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-48-generic aarch64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: arm64
Date: Wed May 8 04:17:41 2019
SourcePackage: linux-hwe
UpgradeStatus: No upgrade log present (probably fresh install)

Revision history for this message
Po-Hsu Lin (cypressyew) wrote :
Revision history for this message
Po-Hsu Lin (cypressyew) wrote :

This test has passed with Xenial 4.4 kernel.
So this feels like a kernel issue to me.

Revision history for this message
Po-Hsu Lin (cypressyew) wrote :

Passed on node "starmie" (ThunderX) on X:

TESTNAME=timer TIMEOUT=2s ACCEL= ./arm/run arm/timer.flat -smp 1
PASS timer (7 tests, 1 skipped)

Po-Hsu Lin (cypressyew)
tags: added: ubuntu-kvm-unit-tests
To post a comment you must log in.
This report contains Public information  
Everyone can see this information.
Subscribing...

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.