hvf accelerator crashes on quest boot

Host OS: macOS High Sierra (10.13.6)
MacBook Pro (Retina, Mid 2015)
Processor: 2.8GHz Intel Core i7
Guest OS: OpenBSD 6.4 install media (install64.iso)
Qemu 3.1.0 release, built with:
./configure --prefix=/usr/local/Cellar/qemu/3.1.0_1 --cc=clang
      --host-cc=clang
      --disable-bsd-user
      --disable-guest-agent
      --enable-curses
      --enable-libssh2
      --enable-vde
      --extra-cflags=-DNCURSES_WIDECHAR=1
      --enable-cocoa
      --disable-sdl
      --disable-gtk
      --enable-hvf
      --target-list=x86_64-softmmu
      --enable-debug

I invoke qemu like this:
Last command had exit code: 0 at 22:58
nwallace@nwallace-ltm3:~
$ sudo qemu-system-x86_64 -M accel=hvf -boot d -cdrom ~/Downloads/install64.iso
Password:
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]
bad size

Abort trap: 6
Last command had exit code: 134 at 22:58
nwallace@nwallace-ltm3:~
$

I ran qemu in lldb to get a stack trace and I get:
Last command had exit code: 0 at 22:54
nwallace@nwallace-ltm3:~/Downloads
$ sudo lldb -- qemu-system-x86_64 -M accel=hvf -boot d -cdrom /Users/nwallace/Downloads/install64.iso
Password:
(lldb) target create "qemu-system-x86_64"
Current executable set to 'qemu-system-x86_64' (x86_64).
(lldb) settings set -- target.run-args  "-M" "accel=hvf" "-boot" "d" "-cdrom" "/Users/nwallace/Downloads/install64.i
so"
(lldb) run
Process 96474 launched: '/usr/local/bin/qemu-system-x86_64' (x86_64)
Process 96474 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGUSR2
    frame #0: 0x00007fff5ef0c00a libsystem_kernel.dylib`__sigsuspend + 10
libsystem_kernel.dylib`__sigsuspend:
->  0x7fff5ef0c00a <+10>: jae    0x7fff5ef0c014            ; <+20>
    0x7fff5ef0c00c <+12>: movq   %rax, %rdi
    0x7fff5ef0c00f <+15>: jmp    0x7fff5ef02b0e            ; cerror
    0x7fff5ef0c014 <+20>: retq
Target 0: (qemu-system-x86_64) stopped.
(lldb) process handle SIGUSR1 -n true -p true -s false
NAME         PASS   STOP   NOTIFY
===========  =====  =====  ======
SIGUSR1      true   false  true
(lldb) process handle SIGUSR2 -n true -p true -s false
NAME         PASS   STOP   NOTIFY
===========  =====  =====  ======
SIGUSR2      true   false  true
(lldb) c
Process 96474 resuming
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]
Process 96474 stopped and restarted: thread 9 received signal: SIGUSR2
<line above repeats about 64 times or so>
Process 96474 stopped and restarted: thread 9 received signal: SIGUSR2
bad size

Process 96474 stopped
* thread #9, stop reason = signal SIGABRT
    frame #0: 0x00007fff5ef0bb66 libsystem_kernel.dylib`__pthread_kill + 10
libsystem_kernel.dylib`__pthread_kill:
->  0x7fff5ef0bb66 <+10>: jae    0x7fff5ef0bb70            ; <+20>
    0x7fff5ef0bb68 <+12>: movq   %rax, %rdi
    0x7fff5ef0bb6b <+15>: jmp    0x7fff5ef02ae9            ; cerror_nocancel
    0x7fff5ef0bb70 <+20>: retq
Target 0: (qemu-system-x86_64) stopped.
(lldb) bt
* thread #9, stop reason = signal SIGABRT
  * frame #0: 0x00007fff5ef0bb66 libsystem_kernel.dylib`__pthread_kill + 10
    frame #1: 0x00007fff5f0d6080 libsystem_pthread.dylib`pthread_kill + 333
    frame #2: 0x00007fff5ee671ae libsystem_c.dylib`abort + 127
    frame #3: 0x000000010016b6ec qemu-system-x86_64`exec_cmps_single + 400
    frame #4: 0x000000010016ada4 qemu-system-x86_64`exec_cmps + 65
    frame #5: 0x0000000100169aaa qemu-system-x86_64`exec_instruction + 48
    frame #6: 0x0000000100164eb2 qemu-system-x86_64`hvf_vcpu_exec + 2658
    frame #7: 0x000000010005bed6 qemu-system-x86_64`qemu_hvf_cpu_thread_fn + 200
    frame #8: 0x00000001003ee531 qemu-system-x86_64`qemu_thread_start + 107
    frame #9: 0x00007fff5f0d3661 libsystem_pthread.dylib`_pthread_body + 340
    frame #10: 0x00007fff5f0d350d libsystem_pthread.dylib`_pthread_start + 377
    frame #11: 0x00007fff5f0d2bf9 libsystem_pthread.dylib`thread_start + 13
(lldb) quit
Quitting LLDB will kill one or more processes. Do you really want to proceed: [Y/n] Y
Last command had exit code: 0 at 23:01
nwallace@nwallace-ltm3:~/Downloads
$


I'm happy to work with someone more knowledgeable to reproduce this issue and provide debugging assistance as I'm able.

Looking through old bug tickets... is this still an issue with the latest version of QEMU? Or could we close this ticket nowadays?


[Expired for QEMU because there has been no activity for 60 days.]