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[GuoqingJiang <2047357@xxxxxxxxxxxxxxxxxx>]

For 5.4.0-1046.49 linux-iot, there are also some similar failures when
run rt on riccioli instance [1].

FAIL: Expected #GP on WRMSR(x2APIC MSR 0x808, 0xffffffffffffffff), got vector 0
FAIL: Expected #GP on WRMSR(x2APIC MSR 0x80b, 0xffffffffffffffff), got vector 0
FAIL: Expected #GP on WRMSR(x2APIC MSR 0x80f, 0xffffffffffffffff), got vector 0
FAIL: Expected #GP on WRMSR(x2APIC MSR 0x832, 0xffffffffffffffff), got vector 0
FAIL: Expected #GP on WRMSR(x2APIC MSR 0x833, 0xffffffffffffffff), got vector 0
FAIL: Expected #GP on WRMSR(x2APIC MSR 0x834, 0xffffffffffffffff), got vector 0
FAIL: Expected #GP on WRMSR(x2APIC MSR 0x835, 0xffffffffffffffff), got vector 0
FAIL: Expected #GP on WRMSR(x2APIC MSR 0x836, 0xffffffffffffffff), got vector 0
FAIL: Expected #GP on WRMSR(x2APIC MSR 0x837, 0xffffffffffffffff), got vector 0
FAIL: Expected #GP on WRMSR(x2APIC MSR 0x838, 0xffffffffffffffff), got vector 0
FAIL: Expected #GP on WRMSR(x2APIC MSR 0x83e, 0xffffffffffffffff), got vector 0
FAIL: Expected #GP on WRMSR(x2APIC MSR 0x83f, 0xffffffffffffffff), got vector 0

[1] http://test-results.kernel/2025.01.13/focal/linux-
iot/5.4.0-1046.49/sru-iot-metal-riccioli.amd64-ubuntu_kvm_unit_tests-
log.html#msr-start

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https://bugs.launchpad.net/bugs/2047357

Title:
  msr from ubuntu_kvm_unit_tests failed with "FAIL: Expected #GP on
  WRMSR(x2APIC MSR 0x837, 0xffffffffffffffff), got vector 0"

Status in ubuntu-kernel-tests:
  New

Bug description:
  Like bug 2047344 (FAIL: Expected #GP on RDSMR(x2APIC MSR 0x82e))
  This issue was found after updating our kvm-unit-test fork to 02d8befe99 "pretty_print_stacks: modify relative path calculation"

  The number of test cases has increased from 303 to 1899.
  There are 9 ~ 15 failures reported for WRMSR on older kernels (5.4).

  Output example from B-oracle-5.4:
   FAIL: Expected #GP on WRMSR(x2APIC MSR 0x80f, 0xffffffffffffffff), got vector 0
   FAIL: Expected #GP on WRMSR(x2APIC MSR 0x832, 0xffffffffffffffff), got vector 0
   FAIL: Expected #GP on WRMSR(x2APIC MSR 0x833, 0xffffffffffffffff), got vector 0
   FAIL: Expected #GP on WRMSR(x2APIC MSR 0x834, 0xffffffffffffffff), got vector 0
   FAIL: Expected #GP on WRMSR(x2APIC MSR 0x835, 0xffffffffffffffff), got vector 0
   FAIL: Expected #GP on WRMSR(x2APIC MSR 0x836, 0xffffffffffffffff), got vector 0
   FAIL: Expected #GP on WRMSR(x2APIC MSR 0x837, 0xffffffffffffffff), got vector 0
   FAIL: Expected #GP on WRMSR(x2APIC MSR 0x838, 0xffffffffffffffff), got vector 0
   FAIL: Expected #GP on WRMSR(x2APIC MSR 0x83e, 0xffffffffffffffff), got vector 0
   FAIL msr (1899 tests, 224 unexpected failures)

  9 failures with WRMSR + 215 failures for RDSMR = 224 failures

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