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[Bug 2047820] [NEW] access in ubuntu_kvm_unit_tests failed on specific Intel SDPs with Focal (FAIL: unexpected access and timeout)

To: canonical-ubuntu-qa@xxxxxxxxxxxxxxxxxxx
From: Po-Hsu Lin <2047820@xxxxxxxxxxxxxxxxxx>
Date: Tue, 02 Jan 2024 10:06:44 -0000
Reply-to: Bug 2047820 <2047820@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx
Public bug reported:

This issue is not a regression nor caused by the test suite update [1]

It's just because we have this tested on Intel SDP node "grumman"
recently in 2023.10.30 cycle. And this issue can be found with
5.4.0-168.186 before the test suite update.

Issue found on node Intel SDP node grumman. Test will fail with
"unexpected access" and timeout in the end. (This issue does not exist
on the same node with Jammy 5.15, and does not exist with Intel SDP
"wildcat" and "vought")

Test log (please find the attachment for the complete test log):
 Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/access'
 BUILD_HEAD=d8edb59a
 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.YMzvL0zmTr -smp 1 -cpu max # -initrd /tmp/tmp.iL1B9Yy1DN
 enabling apic
 smp: waiting for 0 APs
 starting test

 run

 test pte.p pte.51 pde.p: FAIL: unexpected access
 Dump mapping: address: 0xffff923400000000
 ------L4 I292: 2100027
 ------L3 I208: 2101027
 ------L2 I0: 2102061
 ------L1 I0: 8000002000001

 test pte.rw pte.p pte.51 pde.p: FAIL: unexpected access
 Dump mapping: address: 0xffff923400000000
 ------L4 I292: 2100027
 ------L3 I208: 2101027
 ------L2 I0: 2102061
 ------L1 I0: 8000002000003

 test pte.user pte.p pte.51 pde.p: FAIL: unexpected access
 Dump mapping: address: 0xffff923400000000
 ------L4 I292: 2100027
 ------L3 I208: 2101027
 ------L2 I0: 2102061
 ------L1 I0: 8000002000005

 test pte.rw pte.user pte.p pte.51 pde.p: FAIL: unexpected access
 Dump mapping: address: 0xffff923400000000
 ------L4 I292: 2100027
 ------L3 I208: 2101027
 ------L2 I0: 2102061
 ------L1 I0: 8000002000007

 (log omitted)

 test pte.user pte.a pte.d pte.p pte.51 pde.rw pde.user pde.d pde.pse pde.p: FAIL: pde 20000c7 expected 20000e7
 Dump mapping: address: 0xffff923400000000
 ------L4 I292: 2100027
 ------L3 I208: 2101027
 ------L2 I0: 20000c7

 test pte.rw pte.user pte.a pte.d pte.p pte.51 pde.rw pde.user pde.d pde.pse pde.p: FAIL: pde 20000c7 expected 20000e7
 Dump mapping: address: 0xffff923400000000
 ------L4 I292: 2100027
 ------L3 I208: 2101027
 ------L2 I0: 20000c7
 qemu-system-x86_64: terminating on signal 15 from pid 16404 (timeout)
 FAIL access (timeout; duration=90s)

[1] https://lists.ubuntu.com/archives/kernel-
team/2023-December/147665.html

** Affects: ubuntu-kernel-tests
     Importance: Undecided
         Status: New


** Tags: 5.4 amd64 focal sru-20231030 ubuntu-kvm-unit-tests

** Attachment added: "access.log"
   https://bugs.launchpad.net/bugs/2047820/+attachment/5735141/+files/access.log

** Summary changed:

-  access in ubuntu_kvm_unit_tests failed on Intel SDPs with Focal 
+ access in ubuntu_kvm_unit_tests failed on Intel SDPs with Focal (FAIL: unexpected access and timeout)

** Summary changed:

- access in ubuntu_kvm_unit_tests failed on Intel SDPs with Focal (FAIL: unexpected access and timeout)
+ access in ubuntu_kvm_unit_tests failed on specific Intel SDPs with Focal (FAIL: unexpected access and timeout)

** Description changed:

  This issue is not a regression nor caused by the test suite update [1]
  
- It's just because we re-enabled the test on Intel SDP cloud recently in
- 2023.10.30 cycle. And this issue can be found with 5.4.0-168.186 before
- the test suite update.
+ It's just because we have this tested on Intel SDP node "grumman"
+ recently in 2023.10.30 cycle. And this issue can be found with
+ 5.4.0-168.186 before the test suite update.
  
  Issue found on node Intel SDP node grumman. Test will fail with
- "unexpected access" and timeout in the end.  (This issue does not exist
- on the same node with Jammy 5.15)
+ "unexpected access" and timeout in the end. (This issue does not exist
+ on the same node with Jammy 5.15, and does not exist with Intel SDP
+ "wildcat" and "vought")
  
  Test log (please find the attachment for the complete test log):
-  Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/access'
-  BUILD_HEAD=d8edb59a
-  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.YMzvL0zmTr -smp 1 -cpu max # -initrd /tmp/tmp.iL1B9Yy1DN
-  enabling apic
-  smp: waiting for 0 APs
-  starting test
-  
-  run
-  
-  test pte.p pte.51 pde.p: FAIL: unexpected access
-  Dump mapping: address: 0xffff923400000000
-  ------L4 I292: 2100027
-  ------L3 I208: 2101027
-  ------L2 I0: 2102061
-  ------L1 I0: 8000002000001
-  
-  test pte.rw pte.p pte.51 pde.p: FAIL: unexpected access
-  Dump mapping: address: 0xffff923400000000
-  ------L4 I292: 2100027
-  ------L3 I208: 2101027
-  ------L2 I0: 2102061
-  ------L1 I0: 8000002000003
-  
-  test pte.user pte.p pte.51 pde.p: FAIL: unexpected access
-  Dump mapping: address: 0xffff923400000000
-  ------L4 I292: 2100027
-  ------L3 I208: 2101027
-  ------L2 I0: 2102061
-  ------L1 I0: 8000002000005
-  
-  test pte.rw pte.user pte.p pte.51 pde.p: FAIL: unexpected access
-  Dump mapping: address: 0xffff923400000000
-  ------L4 I292: 2100027
-  ------L3 I208: 2101027
-  ------L2 I0: 2102061
-  ------L1 I0: 8000002000007
-  
-  (log omitted)
+  Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/access'
+  BUILD_HEAD=d8edb59a
+  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.YMzvL0zmTr -smp 1 -cpu max # -initrd /tmp/tmp.iL1B9Yy1DN
+  enabling apic
+  smp: waiting for 0 APs
+  starting test
  
-  test pte.user pte.a pte.d pte.p pte.51 pde.rw pde.user pde.d pde.pse pde.p: FAIL: pde 20000c7 expected 20000e7
-  Dump mapping: address: 0xffff923400000000
-  ------L4 I292: 2100027
-  ------L3 I208: 2101027
-  ------L2 I0: 20000c7
-  
-  test pte.rw pte.user pte.a pte.d pte.p pte.51 pde.rw pde.user pde.d pde.pse pde.p: FAIL: pde 20000c7 expected 20000e7
-  Dump mapping: address: 0xffff923400000000
-  ------L4 I292: 2100027
-  ------L3 I208: 2101027
-  ------L2 I0: 20000c7
-  qemu-system-x86_64: terminating on signal 15 from pid 16404 (timeout)
-  FAIL access (timeout; duration=90s)
+  run
  
+  test pte.p pte.51 pde.p: FAIL: unexpected access
+  Dump mapping: address: 0xffff923400000000
+  ------L4 I292: 2100027
+  ------L3 I208: 2101027
+  ------L2 I0: 2102061
+  ------L1 I0: 8000002000001
+ 
+  test pte.rw pte.p pte.51 pde.p: FAIL: unexpected access
+  Dump mapping: address: 0xffff923400000000
+  ------L4 I292: 2100027
+  ------L3 I208: 2101027
+  ------L2 I0: 2102061
+  ------L1 I0: 8000002000003
+ 
+  test pte.user pte.p pte.51 pde.p: FAIL: unexpected access
+  Dump mapping: address: 0xffff923400000000
+  ------L4 I292: 2100027
+  ------L3 I208: 2101027
+  ------L2 I0: 2102061
+  ------L1 I0: 8000002000005
+ 
+  test pte.rw pte.user pte.p pte.51 pde.p: FAIL: unexpected access
+  Dump mapping: address: 0xffff923400000000
+  ------L4 I292: 2100027
+  ------L3 I208: 2101027
+  ------L2 I0: 2102061
+  ------L1 I0: 8000002000007
+ 
+  (log omitted)
+ 
+  test pte.user pte.a pte.d pte.p pte.51 pde.rw pde.user pde.d pde.pse pde.p: FAIL: pde 20000c7 expected 20000e7
+  Dump mapping: address: 0xffff923400000000
+  ------L4 I292: 2100027
+  ------L3 I208: 2101027
+  ------L2 I0: 20000c7
+ 
+  test pte.rw pte.user pte.a pte.d pte.p pte.51 pde.rw pde.user pde.d pde.pse pde.p: FAIL: pde 20000c7 expected 20000e7
+  Dump mapping: address: 0xffff923400000000
+  ------L4 I292: 2100027
+  ------L3 I208: 2101027
+  ------L2 I0: 20000c7
+  qemu-system-x86_64: terminating on signal 15 from pid 16404 (timeout)
+  FAIL access (timeout; duration=90s)
  
  [1] https://lists.ubuntu.com/archives/kernel-
  team/2023-December/147665.html

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https://bugs.launchpad.net/bugs/2047820

Title:
  access in ubuntu_kvm_unit_tests failed on specific Intel SDPs with
  Focal (FAIL: unexpected access and timeout)

Status in ubuntu-kernel-tests:
  New

Bug description:
  This issue is not a regression nor caused by the test suite update [1]

  It's just because we have this tested on Intel SDP node "grumman"
  recently in 2023.10.30 cycle. And this issue can be found with
  5.4.0-168.186 before the test suite update.

  Issue found on node Intel SDP node grumman. Test will fail with
  "unexpected access" and timeout in the end. (This issue does not exist
  on the same node with Jammy 5.15, and does not exist with Intel SDP
  "wildcat" and "vought")

  Test log (please find the attachment for the complete test log):
   Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/access'
   BUILD_HEAD=d8edb59a
   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.YMzvL0zmTr -smp 1 -cpu max # -initrd /tmp/tmp.iL1B9Yy1DN
   enabling apic
   smp: waiting for 0 APs
   starting test

   run

   test pte.p pte.51 pde.p: FAIL: unexpected access
   Dump mapping: address: 0xffff923400000000
   ------L4 I292: 2100027
   ------L3 I208: 2101027
   ------L2 I0: 2102061
   ------L1 I0: 8000002000001

   test pte.rw pte.p pte.51 pde.p: FAIL: unexpected access
   Dump mapping: address: 0xffff923400000000
   ------L4 I292: 2100027
   ------L3 I208: 2101027
   ------L2 I0: 2102061
   ------L1 I0: 8000002000003

   test pte.user pte.p pte.51 pde.p: FAIL: unexpected access
   Dump mapping: address: 0xffff923400000000
   ------L4 I292: 2100027
   ------L3 I208: 2101027
   ------L2 I0: 2102061
   ------L1 I0: 8000002000005

   test pte.rw pte.user pte.p pte.51 pde.p: FAIL: unexpected access
   Dump mapping: address: 0xffff923400000000
   ------L4 I292: 2100027
   ------L3 I208: 2101027
   ------L2 I0: 2102061
   ------L1 I0: 8000002000007

   (log omitted)

   test pte.user pte.a pte.d pte.p pte.51 pde.rw pde.user pde.d pde.pse pde.p: FAIL: pde 20000c7 expected 20000e7
   Dump mapping: address: 0xffff923400000000
   ------L4 I292: 2100027
   ------L3 I208: 2101027
   ------L2 I0: 20000c7

   test pte.rw pte.user pte.a pte.d pte.p pte.51 pde.rw pde.user pde.d pde.pse pde.p: FAIL: pde 20000c7 expected 20000e7
   Dump mapping: address: 0xffff923400000000
   ------L4 I292: 2100027
   ------L3 I208: 2101027
   ------L2 I0: 20000c7
   qemu-system-x86_64: terminating on signal 15 from pid 16404 (timeout)
   FAIL access (timeout; duration=90s)

  [1] https://lists.ubuntu.com/archives/kernel-
  team/2023-December/147665.html

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Follow ups

[Bug 2047820] Re: access, vmx_pf_exception_test in ubuntu_kvm_unit_tests failed on specific Intel SDPs with Focal (FAIL: unexpected access and timeout)
From: Po-Hsu Lin, 2024-02-23
[Bug 2047820] Re: access in ubuntu_kvm_unit_tests failed on specific Intel SDPs with Focal (FAIL: unexpected access and timeout)
From: Po-Hsu Lin, 2024-01-03