4.16 kernel: vmwrite error: reg 401e value 2021 (err 12)

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Hello, I did quick test with latest stable kernel (4.16.2) and got tons
of vmwrite errors immediately when starting VM:

Apr 17 08:22:05 192.168.1.4 merkur kernel: vmwrite error: reg 401e value
2021 (err 12)
Apr 17 08:22:05 192.168.1.4 merkur kernel: CPU: 0 PID: 1876 Comm:
qemu-test4 Not tainted 4.16.2-1-core2 #1
Apr 17 08:22:05 192.168.1.4 merkur kernel: Hardware name:  /DG35EC, BIOS
ECG3510M.86A.0118.2010.0113.1426 01/13/2010
Apr 17 08:22:05 192.168.1.4 merkur kernel: Call Trace:
Apr 17 08:22:05 192.168.1.4 merkur kernel: dump_stack+0x5c/0x82
Apr 17 08:22:05 192.168.1.4 merkur kernel: vmx_set_cr4+0x1ca/0x200
[kvm_intel]
Apr 17 08:22:05 192.168.1.4 merkur kernel: vmx_vcpu_reset+0x320/0x660
[kvm_intel]
Apr 17 08:22:05 192.168.1.4 merkur kernel: kvm_vcpu_reset+0x1f6/0x300 [kvm]
Apr 17 08:22:05 192.168.1.4 merkur kernel: ? vcpu_load+0x1f/0x30 [kvm]
Apr 17 08:22:05 192.168.1.4 merkur kernel: kvm_arch_vcpu_setup+0x1b/0x30
[kvm]
Apr 17 08:22:05 192.168.1.4 merkur kernel: kvm_vm_ioctl+0x1ea/0x750 [kvm]
Apr 17 08:22:05 192.168.1.4 merkur kernel: do_vfs_ioctl+0x8b/0x5e0
Apr 17 08:22:05 192.168.1.4 merkur kernel: SyS_ioctl+0x36/0x70
Apr 17 08:22:05 192.168.1.4 merkur kernel: do_syscall_64+0x6a/0x2f0
Apr 17 08:22:05 192.168.1.4 merkur kernel: ? __switch_to+0x11b/0x340
Apr 17 08:22:05 192.168.1.4 merkur kernel:
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Apr 17 08:22:05 192.168.1.4 merkur kernel: RIP: 0033:0x7f56ccd0fb77
Apr 17 08:22:05 192.168.1.4 merkur kernel: RSP: 002b:00007f56c8df4988
EFLAGS: 00000246 ORIG_RAX: 0000000000000010
Apr 17 08:22:05 192.168.1.4 merkur kernel: RAX: ffffffffffffffda RBX:
000000000000ae41 RCX: 00007f56ccd0fb77
Apr 17 08:22:05 192.168.1.4 merkur kernel: RDX: 0000000000000001 RSI:
000000000000ae41 RDI: 000000000000000e
Apr 17 08:22:05 192.168.1.4 merkur kernel: RBP: 0000000000000001 R08:
0000556e8e5ed600 R09: 0000556e907fa5f0
Apr 17 08:22:05 192.168.1.4 merkur kernel: R10: 0000556e8ebc7620 R11:
0000000000000246 R12: 0000556e9076f540
Apr 17 08:22:05 192.168.1.4 merkur kernel: R13: 00007f56c8df59c0 R14:
0000000000000000 R15: 0000000000000003

model name      : Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl cpuid
aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm
lahf_lm pti tpr_shadow dtherm

4.15.17 works fine, it seems already reported here:
https://bugzilla.redhat.com/show_bug.cgi?id=1566258

Z.



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