Greeting,

FYI, we noticed the following commit (built with gcc-9):

commit: b5b51922dfc59033acfd0d59cdc26cca9b4388dc ("[PATCH] asm-generic/hyperv: Fix struct hv_message_header ordering")
url: https://github.com/0day-ci/linux/commits/Siddharth-Chandrasekaran/asm-generic-hyperv-Fix-struct-hv_message_header-ordering/20210729-213824
base: https://git.kernel.org/cgit/linux/kernel/git/arnd/asm-generic.git master

in testcase: kvm-unit-tests
version: kvm-unit-tests-x86_64-bc6f264-1_20210701
with following parameters:

	ucode: 0xde



on test machine: 4 threads 1 sockets Intel(R) Core(TM) i7-7567U CPU @ 3.50GHz with 32G memory

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):




If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@intel.com>

2021-07-30 16:01:53 ./run_tests.sh
PASS apic-split (56 tests)
PASS ioapic-split (19 tests)
PASS apic (56 tests)
PASS ioapic (26 tests)
SKIP cmpxchg8b (i386 only)
PASS smptest (1 tests)
PASS smptest3 (1 tests)
PASS vmexit_cpuid 
PASS vmexit_vmcall 
PASS vmexit_mov_from_cr8 
PASS vmexit_mov_to_cr8 
PASS vmexit_inl_pmtimer 
PASS vmexit_ipi 
PASS vmexit_ipi_halt 
PASS vmexit_ple_round_robin 
PASS vmexit_tscdeadline 
PASS vmexit_tscdeadline_immed 
PASS access 
SKIP access-reduced-maxphyaddr (/sys/module/kvm_intel/parameters/allow_smaller_maxphyaddr not equal to Y)
PASS smap (18 tests)
SKIP pku (0 tests)
SKIP pks (0 tests)
SKIP asyncpf (0 tests)
PASS emulator (135 tests, 2 skipped)
PASS eventinj (13 tests)
PASS hypercall (2 tests)
PASS idt_test (4 tests)
PASS memory (8 tests)
PASS msr (17 tests)
FAIL pmu (142 tests, 10 unexpected failures)
PASS pmu_lbr (3 tests)
PASS vmware_backdoors (11 tests)
PASS realmode 
PASS s3 
PASS setjmp (10 tests)
PASS sieve 
PASS syscall (2 tests)
PASS tsc (3 tests)
PASS tsc_adjust (5 tests)
PASS xsave (17 tests)
PASS rmap_chain 
SKIP svm (0 tests)
SKIP taskswitch (i386 only)
SKIP taskswitch2 (i386 only)
PASS kvmclock_test 
PASS pcid-enabled (2 tests)
PASS pcid-disabled (2 tests)
PASS pcid-asymmetric (2 tests)
PASS rdpru (1 tests)
PASS umip (21 tests)
SKIP la57 (i386 only)
FAIL vmx (429297 tests, 1 unexpected failures, 2 expected failures, 7 skipped)
SKIP ept (0 tests)
SKIP vmx_eoi_bitmap_ioapic_scan (1 tests, 1 skipped)
SKIP vmx_hlt_with_rvi_test (1 tests, 1 skipped)
SKIP vmx_apicv_test (2 tests, 2 skipped)
PASS vmx_apic_passthrough_thread (8 tests)
PASS vmx_init_signal_test (9 tests)
PASS vmx_sipi_signal_test (11 tests)
PASS vmx_apic_passthrough_tpr_threshold_test (6 tests)
PASS vmx_vmcs_shadow_test (142173 tests)
PASS debug (13 tests)
PASS hyperv_synic (1 tests)
PASS hyperv_connections (7 tests)
FAIL hyperv_stimer (2 tests, 2 unexpected failures)
PASS hyperv_clock 
PASS intel_iommu (11 tests)
SKIP tsx-ctrl (1 tests, 1 skipped)
SKIP intel_cet (0 tests)



To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp install                job.yaml  # job file is attached in this email
        bin/lkp split-job --compatible job.yaml  # generate the yaml file for lkp run
        bin/lkp run                    generated-yaml-file



---
0DAY/LKP+ Test Infrastructure                   Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org       Intel Corporation

Thanks,
Oliver Sang