Comment 50 for bug 1866870

Ok, upstream tag v4.2.0 and these configure options reproduced the crash:

export LDFLAGS="-Wl,--warn-common -Wl,-z,relro -Wl,-z,now -pie -m64 -g -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,--as-needed"
export CFLAGS="-O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -g"

Full configure output: https://paste.ubuntu.com/p/Tzq6pDWD9R/

$ ./x86_64-softmmu/qemu-system-x86_64 --enable-kvm -cpu Penryn,vmx=on -m 512 --nodefaults --nographic
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.sse4.1 [bit 19]
qemu-system-x86_64: warning: host doesn't support requested feature: MSR(48EH).vmx-vnmi-pending [bit 22]
qemu-system-x86_64: warning: host doesn't support requested feature: MSR(48EH).vmx-secondary-ctls [bit 31]
qemu-system-x86_64: warning: host doesn't support requested feature: MSR(48BH).vmx-apicv-xapic [bit 0]
qemu-system-x86_64: warning: host doesn't support requested feature: MSR(48BH).vmx-wbinvd-exit [bit 6]
qemu-system-x86_64: warning: host doesn't support requested feature: MSR(48DH).vmx-vnmi [bit 5]
qemu-system-x86_64: warning: host doesn't support requested feature: MSR(48FH).vmx-exit-load-perf-global-ctrl [bit 12]
qemu-system-x86_64: warning: host doesn't support requested feature: MSR(490H).vmx-entry-load-perf-global-ctrl [bit 13]
qemu-system-x86_64: warning: host doesn't support requested feature: MSR(480H).vmx-ins-outs [bit 54]
KVM internal error. Suberror: 1
emulation failure
EAX=00000000 EBX=00000000 ECX=000086d4 EDX=00000000
ESI=00000000 EDI=00000000 EBP=000086d4 ESP=00006d7c
EIP=00007acf EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 00000000 ffffffff 00809300
CS =f000 000f0000 ffffffff 00809b00
SS =0000 00000000 ffffffff 00809300
DS =0000 00000000 ffffffff 00809300
FS =0000 00000000 ffffffff 00809300
GS =0000 00000000 ffffffff 00809300
LDT=0000 00000000 0000ffff 00008200
TR =0000 00000000 0000ffff 00008b00
GDT= 000f6200 00000037
IDT= 00000000 000003ff
CR0=00000010 CR2=00000000 CR3=00000000 CR4=00000000
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000000
Code=b8 90 d9 00 00 66 e8 6b f7 ff ff 66 b8 0a 00 00 00 e9 61 f2 <f3> 0f 1e fb 66 57 66 56 66 53 66 53 66 89 c7 67 66 89 14 24 66 89 ce 66 e8 15 f8 ff ff 88
^Cqemu-system-x86_64: terminating on signal 2