found on:
SRU Cycle: 2025.02.10
Series: jammy
Package: linux-realtime-6.8
Version: 6.8.1-1018.19~22.04.1
Cloud: testflinger
Instance: amd-server
Region: servers-generic
Operation: sru
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https://bugs.launchpad.net/bugs/1991922
Title:
svm_npt from ubuntu_kvm_unit_tests failed on node gonzo (FAIL:
npt_rw_pfwalk)
Status in ubuntu-kernel-tests:
New
Bug description:
Issue found after kvm-unit-test repo updated to d8a4f9e5 (ci: Update
the list of tests that we run in the Fedora Cirrus-CI)
Looks like this issue is hardware dependent, it requires SVM and will
be skipped on those machines that this feature is not available.
Test failed with:
FAIL: npt_rw_pfwalk
And eventually failed with assertion error:
/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/lib/x86/processor.h:524:
assert failed: !vector: Unexpected fault '13' writing CR4 = 100020
STACK: 400653 4008e7 40149d 400a59 4001b7
Test log:
Running
'/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/svm_npt'
BUILD_HEAD=d8a4f9e5
timeout -k 1s --foreground 90s /usr/bin/qemu-system-x86_64 --no-reboot
-nodefaults -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4
-vnc none -serial stdio -device pci-testdev -machine accel=kvm -kernel
/tmp/tmp.DRtfBCs9wo -smp 2 -cpu max,+svm -m 4g # -initrd /tmp/tmp.tFKG8NwTBg
enabling apic
smp: waiting for 1 APs
enabling apic
setup: CPU 1 online
paging enabled
cr0 = 80010011
cr3 = 10bf000
cr4 = 20
NPT detected - running all tests with NPT enabled
PASS: npt_nx
PASS: npt_np
PASS: npt_us
PASS: npt_rw
FAIL: npt_rw_pfwalk
PASS: npt_l1mmio
PASS: npt_rw_l1mmio
PASS: Wanted #NPF on rsvd bits = 0x8000000000000000, got exit = 0x400
PASS: Wanted PFEC = 0x10000000d, got PFEC = 10000000d, PxE =
0x8000000000400027. host.NX = 0, host.SMEP = 0, guest.NX = 0, guest.SMEP = 0
PASS: Wanted #NPF on rsvd bits = 0xf280000000000, got exit = 0x400
PASS: Wanted PFEC = 0x10000001d, got PFEC = 10000001d, PxE =
0xf280000400027. host.NX = 1, host.SMEP = 0, guest.NX = 0, guest.SMEP = 0
/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/lib/x86/processor.h:524:
assert failed: !vector: Unexpected fault '13' writing CR4 = 100020
STACK: 400653 4008e7 40149d 400a59 4001b7
FAIL svm_npt
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