ubuntu-kernel-tests

ioapic from ubuntu_kvm_unit_tests flaky on some instances with Unhandled cpu exception 14 #PF at ip ffffffffffff0008

Bug #2009605 reported by Andrei Gherzan
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
ubuntu-kernel-tests
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Bug Description

This was seen in two different cycles and instances:

SRU Cycle: 2023.01.30
Series: focal
Package: linux-azure
Version: 5.4.0-1104.110
Cloud: azure
Instance: Standard_D4_v4
Region: westeurope
Operation: sru

SRU Cycle: 2023.02.27
Series: xenial
Package: linux-hwe
Version: 4.15.0-207.218~16.04.1
Cloud: metal
Instance: rizzo
Region: kernel
Operation: sru

Logs:

Unhandled cpu exception 14 #PF at ip ffffffffffff0008
PF at 0xffffffffffff0008 addr 0xffffffffffff0008
error_code=0000 rflags=00010006 cs=00000008
rax=0000000000000014 rcx=00000000000003fd rdx=00000000000003f8 rbx=0000000000000010
rbp=000000000050f898 rsi=000000000050f074 rdi=000000000000000a
r8=000000000050f074 r9=00000000000003f8 r10=000000000000000d r11=0000000000000000
r12=0000000000000000 r13=0000000000000000 r14=0000000000000000 r15=0000000000000000
cr0=00000000e0000011 cr2=ffffffffffff0008 cr3=000000000040d000 cr4=0000000000000020
cr8=0000000000000000
STACK: @ffffffffffff0008 404b7f 2
FAIL ioapic

Sean Feole (sfeole)
tags: added: azure
tags: added: 4.15 5.4 focal metal xenial
Andrei Gherzan (agherzan)
tags: added: sru-20230130
removed: 4.15 5.4 azure focal metal xenial
tags: added: 4.15 5.4 azure focal metal xenial
Revision history for this message
Po-Hsu Lin (cypressyew) wrote :

Found on X-4.4.0-255.289 with node bavor.

tags: added: 4.4 amd64 sru-s20240429
Revision history for this message
Po-Hsu Lin (cypressyew) wrote :

Found flaky with Oracle VM.DenseIO2.8 With B-oracle-5.4.0-1127.136~18.04.1, passed after retest

 Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/ioapic'
 BUILD_HEAD=b04954c9
 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.pWgCVWL78F -smp 4 -cpu qemu64,+x2apic # -initrd /tmp/tmp.2x7KEOgRZP
 qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]
 qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]
 qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]
 qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]
 enabling apic
 smp: waiting for 3 APs
 enabling apic
 enabling apic
 setup: CPU 2 online
 setup: CPU 3 online
 enabling apic
 setup: CPU 1 online
 paging enabled
 cr0 = 80010011
 cr3 = 7ede000
 cr4 = 20
 x2apic enabled
 PASS: version register read only test
 PASS: id register only bits [24:27] writable
 PASS: arbitration register set by id
 PASS: arbtration register read only
 PASS: edge triggered intr
 PASS: level triggered intr
 PASS: ioapic simultaneous edge interrupts
 PASS: coalesce simultaneous level interrupts
 PASS: sequential level interrupts
 PASS: retriggered level interrupts without masking
 PASS: masked level interrupt
 PASS: unmasked level interrupt
 PASS: masked level interrupt
 PASS: unmasked level interrupt
 PASS: retriggered level interrupts with mask
 PASS: TMR for ioapic edge interrupts (expected false)
 PASS: TMR for ioapic level interrupts (expected false)
 PASS: TMR for ioapic level interrupts (expected true)
 PASS: TMR for ioapic edge interrupts (expected true)
 PASS: ioapic physical destination mode
 Unhandled exception 14 #PF at ip ffffffffffff0008
 PF at 0xffffffffffff0008 addr 0xffffffffffff0008
 error_code=0000 rflags=00010006 cs=00000008
 rax=0000000000000014 rcx=00000000000003fd rdx=00000000000003f8 rbx=0000000000000010
 rbp=000000000050fa58 rsi=000000000050f234 rdi=000000000050f234
  r8=000000000000000a r9=00000000000003f8 r10=000000000000000d r11=0000000000000000
 r12=0000000000000000 r13=0000000000000000 r14=0000000000000000 r15=0000000000000000
 cr0=00000000e0000011 cr2=ffffffffffff0008 cr3=000000000040d000 cr4=0000000000000020
 cr8=0000000000000000
  STACK: @ffffffffffff0008 404e7f 2
 FAIL ioapic

summary: - ubuntu_kvm_unit_tests fails on ioapic for xenial:linux-hwe
+ ioapic from ubuntu_kvm_unit_tests flaky on some instances with Unhandled
+ cpu exception 14 #PF at ip ffffffffffff0008
Revision history for this message
Po-Hsu Lin (cypressyew) wrote :

Found flaky on Azure Standard_D4s_v3-gen2 with J-azure-fips-5.15.0-1068.77+fips1, passed after retest.

 Running '/home/azure/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/ioapic'
 BUILD_HEAD=b04954c9
 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.xaREV4nUjp -smp 4 -cpu qemu64,+x2apic # -initrd /tmp/tmp.8ryFtv4GvK
 qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]
 qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]
 qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]
 qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]
 enabling apic
 smp: waiting for 3 APs
 enabling apic
 enabling apic
 setup: CPU 2 online
 setup: CPU 1 online
 enabling apic
 setup: CPU 3 online
 paging enabled
 cr0 = 80010011
 cr3 = 1007000
 cr4 = 20
 x2apic enabled
 PASS: version register read only test
 PASS: id register only bits [24:27] writable
 PASS: arbitration register set by id
 PASS: arbtration register read only
 PASS: edge triggered intr
 PASS: level triggered intr
 PASS: ioapic simultaneous edge interrupts
 PASS: coalesce simultaneous level interrupts
 PASS: sequential level interrupts
 PASS: retriggered level interrupts without masking
 PASS: masked level interrupt
 PASS: unmasked level interrupt
 PASS: masked level interrupt
 PASS: unmasked level interrupt
 PASS: retriggered level interrupts with mask
 PASS: TMR for ioapic edge interrupts (expected false)
 PASS: TMR for ioapic level interrupts (expected false)
 PASS: TMR for ioapic level interrupts (expected true)
 PASS: TMR for ioapic edge interrupts (expected true)
 Unhandled exception 14 #PF at ip ffffffffffff1008
 PF at 0xffffffffffff1008 addr 0xffffffffffff1008
 error_code=0000 rflags=00010006 cs=00000008
 rax=0000000000000014 rcx=00000000000003fd rdx=00000000000003f8 rbx=0000000000000010
 rbp=0000000000510738 rsi=000000000050ff14 rdi=000000000000000a
  r8=000000000050ff14 r9=00000000000003f8 r10=000000000000000d r11=0000000000000000
 r12=0000000000000000 r13=0000000000000000 r14=0000000000000000 r15=0000000000000000
 cr0=0000000080000011 cr2=ffffffffffff1008 cr3=000000000040d000 cr4=0000000000000020
 cr8=0000000000000000
  STACK: @ffffffffffff1008 404d27 2
 FAIL ioapic

Revision history for this message
Thibf (thibf) wrote :

Found on noble intel 6.8.0-1007

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