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[Bug 1892855] Re: [Potential Regression] hyperv_connections / hyperv_stimer / hyperv_synic failed on B-i386 / B-5.4 i386

To: canonical-ubuntu-qa@xxxxxxxxxxxxxxxxxxx
From: Jürg Häfliger <1892855@xxxxxxxxxxxxxxxxxx>
Date: Fri, 18 Apr 2025 10:27:46 -0000
Reply-to: Bug 1892855 <1892855@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx
** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1892855

Title:
  [Potential Regression] hyperv_connections / hyperv_stimer /
  hyperv_synic failed on B-i386 / B-5.4 i386

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Issue found on 4.15.0-114.115, with i386 generic /lowlatency on node
  fozzie.

  All 3 tests failed with timeout issue:
  * hyperv_connections
   timeout -k 1s --foreground 90s /usr/bin/qemu-system-i386 -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.UwdQ0PZort -smp 2 -cpu kvm64,hv_vpindex,hv_synic -device hyperv-testdev # -initrd /tmp/tmp.GNmO7BfE7a
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.syscall [bit 11]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.lm [bit 29]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.syscall [bit 11]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.lm [bit 29]
   enabling apic
   enabling apic
   paging enabled
   cr0 = 80010011
   cr3 = 453000
   cr4 = 10
   EAX=00459001 EBX=0040aae0 ECX=40000083 EDX=00000000
   ESI=00000000 EDI=00000000 EBP=0044b158 ESP=0044b130
   EIP=004006b9 EFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
   ES =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   CS =0008 00000000 ffffffff 00c09b00 DPL=0 CS32 [-RA]
   SS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   DS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   FS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   GS =0010 0044a1f0 ffffffff 00c09300 DPL=0 DS [-WA]
   LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
   TR =0080 00406280 0000ffff 00008b00 DPL=0 TSS32-busy
   GDT= 00406000 0000027f
   IDT= 00000000 00000fff
   CR0=80010011 CR2=00000000 CR3=00453000 CR4=00000010
   DR0=00000000 DR1=00000000 DR2=664fb17c DR3=00000000
   DR6=ffff0ff0 DR7=00000400
   EFER=0000000000000000
   Code=87 e0 aa 40 00 83 c8 01 ba 00 00 00 00 b9 83 00 00 40 0f 30 <8b> 43 04 83 c8 01 b9 82 00 00 40 0f 30 b8 01 00 00 00 b9 80 00 00 40 0f 30 83 c4 0c 0f b6
   qemu-system-i386: terminating on signal 15 from pid 12753 (timeout)
   FAIL hyperv_connections (timeout; duration=90s)

  * hyperv_stimer
   timeout -k 1s --foreground 90s /usr/bin/qemu-system-i386 -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.P9Uky1nZUD -smp 2 -cpu kvm64,hv_vpindex,hv_time,hv_synic,hv_stimer -device hyperv-testdev # -initrd /tmp/tmp.uulivUIlYy
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.syscall [bit 11]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.lm [bit 29]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.syscall [bit 11]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.lm [bit 29]
   enabling apic
   enabling apic
   paging enabled
   cr0 = 80010011
   cr3 = 453000
   cr4 = 10
   enabling apic
   cpus = 2
   EAX=00458001 EBX=0040aa9c ECX=40000083 EDX=00000000
   ESI=00000000 EDI=00000004 EBP=0044aab8 ESP=0044aaa0
   EIP=0040070c EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
   ES =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   CS =0008 00000000 ffffffff 00c09b00 DPL=0 CS32 [-RA]
   SS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   DS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   FS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   GS =0010 00449b60 ffffffff 00c09300 DPL=0 DS [-WA]
   LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
   TR =0080 00406280 0000ffff 00008b00 DPL=0 TSS32-busy
   GDT= 00406000 0000027f
   IDT= 00000000 00000fff
   CR0=80010011 CR2=00000000 CR3=00453000 CR4=00000010
   DR0=00000000 DR1=00000000 DR2=4036d141 DR3=00000000
   DR6=ffff0ff0 DR7=00000400
   EFER=0000000000000000
   Code=86 64 aa 40 00 83 c8 01 ba 00 00 00 00 b9 83 00 00 40 0f 30 01 00 00 00 b9 80 00 00 40 0f 30 83 ec 04 6a 00 68 f1 00 00 00 6a 02 e8 ac 02 00 00 83
   EAX=00459001 EBX=0040aad8 ECX=40000083 EDX=00000000
   ESI=0000003c EDI=00000004 EBP=0009ffbc ESP=0009ffa4
   EIP=0040070c EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
   ES =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   CS =0008 00000000 ffffffff 00c09b00 DPL=0 CS32 [-RA]
   SS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   DS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   FS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   GS =0010 0009f000 ffffffff 00c09300 DPL=0 DS [-WA]
   LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
   TR =0088 004062e8 0000ffff 00008b00 DPL=0 TSS32-busy
   GDT= 00406000 0000027f
   IDT= 00000000 00000fff
   CR0=e0000011 CR2=00000000 CR3=00453000 CR4=00000010
   DR0=00000000 DR1=00000000 DR2=2d1ab8b7 DR3=00000000
   DR6=ffff0ff0 DR7=00000400
   EFER=0000000000000000
   Code=86 64 aa 40 00 83 c8 01 ba 00 00 00 00 b9 83 00 00 40 0f 30 01 00 00 00 b9 80 00 00 40 0f 30 83 ec 04 6a 00 68 f1 00 00 00 6a 02 e8 ac 02 00 00 83
   qemu-system-i386: terminating on signal 15 from pid 12956 (timeout)
   FAIL hyperv_stimer (timeout; duration=90s)

  * hyperv_synic
   timeout -k 1s --foreground 90s /usr/bin/qemu-system-i386 -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.31xb2AFzst -smp 2 -cpu kvm64,hv_vpindex,hv_synic -device hyperv-testdev # -initrd /tmp/tmp.TrTv7F4PNR
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.syscall [bit 11]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.lm [bit 29]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.syscall [bit 11]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.lm [bit 29]
   enabling apic
   enabling apic
   paging enabled
   cr0 = 80010011
   cr3 = 454000
   cr4 = 10
   enabling apic
   ncpus = 2
   prepare
   EAX=00467001 EBX=00000000 ECX=40000083 EDX=00000000
   ESI=00000001 EDI=0040035d EBP=0044b7a8 ESP=0044b7a0
   EIP=004003bc EFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
   ES =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   CS =0008 00000000 ffffffff 00c09b00 DPL=0 CS32 [-RA]
   SS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   DS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   FS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   GS =0010 0044a870 ffffffff 00c09300 DPL=0 DS [-WA]
   LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
   TR =0080 00407280 0000ffff 00008b00 DPL=0 TSS32-busy
   GDT= 00407000 0000027f
   IDT= 00000000 00000fff
   CR0=80010011 CR2=00000000 CR3=00454000 CR4=00000010
   DR0=00000000 DR1=00000000 DR2=21f9ba9d DR3=00000000
   DR6=ffff0ff0 DR7=00000400
   EFER=0000000000000000
   Code=1c 00 00 83 c8 01 bb 00 00 00 00 b9 83 00 00 40 89 da 0f 30 40 1c 00 00 83 c8 01 b9 82 00 00 40 89 da 0f 30 b8 01 00 00 00 b9 80 00 00 40 0f 30 e8
   EAX=00468001 EBX=00000000 ECX=40000083 EDX=00000000
   ESI=0040035d EDI=00454000 EBP=0009ffbc ESP=0009ffb4
   EIP=004003bc EFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
   ES =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   CS =0008 00000000 ffffffff 00c09b00 DPL=0 CS32 [-RA]
   SS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   DS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   FS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
   GS =0010 0009f000 ffffffff 00c09300 DPL=0 DS [-WA]
   LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
   TR =0088 004072e8 0000ffff 00008b00 DPL=0 TSS32-busy
   GDT= 00407000 0000027f
   IDT= 00000000 00000fff
   CR0=e0000011 CR2=00000000 CR3=00454000 CR4=00000010
   DR0=00000000 DR1=00000000 DR2=3135efd9 DR3=00000000
   DR6=ffff0ff0 DR7=00000400
   EFER=0000000000000000
   Code=1c 00 00 83 c8 01 bb 00 00 00 00 b9 83 00 00 40 89 da 0f 30 40 1c 00 00 83 c8 01 b9 82 00 00 40 89 da 0f 30 b8 01 00 00 00 b9 80 00 00 40 0f 30 e8
   qemu-system-i386: terminating on signal 15 from pid 13160 (timeout)
   FAIL hyperv_synic (timeout; duration=90s)

  These 3 tests were skipped / passed in 4.15.0-112.113:
  * hyperv_connections
   timeout -k 1s --foreground 90s /usr/bin/qemu-system-i386 -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.kk19hBFFOa -smp 2 -cpu kvm64,hv_vpindex,hv_synic -device hyperv-testdev # -initrd /tmp/tmp.iFsWaupJ8x
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.syscall [bit 11]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.lm [bit 29]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.syscall [bit 11]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.lm [bit 29]
   enabling apic
   enabling apic
   paging enabled
   cr0 = 80010011
   cr3 = 453000
   cr4 = 10
   SKIP: Hyper-V SynIC connections are not supported
   SUMMARY: 1 tests, 1 skipped
   SKIP hyperv_connections (1 tests, 1 skipped)

  * hyperv_stimer
   timeout -k 1s --foreground 90s /usr/bin/qemu-system-i386 -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.mHE6kfD8aI -smp 2 -cpu kvm64,hv_vpindex,hv_time,hv_synic,hv_stimer -device hyperv-testdev # -initrd /tmp/tmp.px8J6EErWg
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.syscall [bit 11]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.lm [bit 29]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.syscall [bit 11]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.lm [bit 29]
   enabling apic
   enabling apic
   paging enabled
   cr0 = 80010011
   cr3 = 453000
   cr4 = 10
   enabling apic
   cpus = 2
   PASS: Hyper-V SynIC periodic timers test vcpu 0
   PASS: Hyper-V SynIC periodic timers test vcpu 1
   PASS: Hyper-V SynIC one-shot test vcpu 0
   PASS: Hyper-V SynIC one-shot test vcpu 1
   PASS: Hyper-V SynIC auto-enable one-shot timer test vcpu 0
   PASS: Hyper-V SynIC auto-enable one-shot timer test vcpu 1
   PASS: Hyper-V SynIC auto-enable periodic timer test vcpu 0
   PASS: Hyper-V SynIC auto-enable periodic timer test vcpu 1
   PASS: no timer fired while msg slot busy: vcpu 0
   PASS: no timer fired while msg slot busy: vcpu 1
   PASS: timer resumed when msg slot released: vcpu 0
   PASS: timer resumed when msg slot released: vcpu 1
   SUMMARY: 12 tests
   PASS hyperv_stimer (12 tests)

  * hyperv_synic
   timeout -k 1s --foreground 90s /usr/bin/qemu-system-i386 -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.Uh5zREsVu5 -smp 2 -cpu kvm64,hv_vpindex,hv_synic -device hyperv-testdev # -initrd /tmp/tmp.z95qOX5WXi
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.syscall [bit 11]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.lm [bit 29]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.syscall [bit 11]
   qemu-system-i386: warning: host doesn't support requested feature: CPUID.80000001H:EDX.lm [bit 29]
   enabling apic
   enabling apic
   paging enabled
   cr0 = 80010011
   cr3 = 454000
   cr4 = 10
   enabling apic
   ncpus = 2
   prepare
   test 0 -> 1
   test 1 -> 0
   cleanup
   isr_enter_count[0] = 16
   isr_enter_count[1] = 16
   PASS: Hyper-V SynIC test
   SUMMARY: 1 tests
   PASS hyperv_synic (1 tests)

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