Re: amd64.iso KVM guest kernel panic pc=ffffffff811c303c (Opteron_G3 to Opteron_G5)

Dear All,

I have managed to configure and get the output of the serial console on
KVM and here is the output (with different CPU type only the name of
the CPU changes) :
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> OpenBSD/amd64 CDBOOT 3.40
boot> 
cannot open cd0a:/etc/random.seed: No such file or directory
booting cd0a:/6.4/amd64/bsd.rd: 3511114+1500160+3892040+0+598016
[372715+111+441072+293323]=0xa208a0
entry point at 0x1000158
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California.  All rights
reserved.
Copyright (c) 1995-2018 OpenBSD. All rights reserved.  https://www.Open
BSD.org

OpenBSD 6.4 (RAMDISK_CD) #348: Thu Oct 11 13:36:16 MDT 2018
    deraadt@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/RAMDISK_C
D
real mem = 4278030336 (4079MB)
avail mem = 4144590848 (3952MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.8 @ 0xf6110 (11 entries)
bios0: vendor SeaBIOS version "1.11.0-2.el7" date 04/01/2014
bios0: Red Hat KVM
acpi0 at bios0: rev 0
acpi0: tables DSDT FACP APIC
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: AMD Opteron 63xx class CPU, 3992.09 MHz, 15-02-00
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36
,CFLUSH,MMX,FXSR,SSE,SSE2,SSE3,PCLMUL,SSSE3,FMA3,CX16,SSE4.1,SSE4.2,x2A
PIC,POPCNT,AES,XSAVE,AVX,F16C,HV,NXE,PAGE1GB,LONG,LAHF,ABM,SSE4A,MASSE,
3DNOWP,XOP,FMA4,TBM
cpu0: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB
64b/line 16-way L2 cache, 16MB 64b/line 16-way L3 cache
cpu0: ITLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu0: DTLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
fatal protection fault in supervisor mode
trap type 4 code 0 rip ffffffff811c303c cs 8 rflags 10202 cr2  0 cpl e
rsp ffffffff81a06a20
gsbase 0xffffffff81872ff0  kgsbase 0x0
panic: trap type 4, code=0, pc=ffffffff811c303c

The operating system has halted.
Please press any key to reboot.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Should I report this as a bug ?

Best Regards,
Strahil Nikolov


On Sun, 2018-10-21 at 18:07 +0300, snikolov wrote:
> Hello All,
>
> During install of install64.iso I experience a kernel panic during
> boot of the CD (pc=ffffffff811c303c).
> install64.iso sha256sum is
> 81833b79e23dc0f961ac5fb34484bca66386deb3181ddb8236870fa4f488cdd2
> which
> matches https://cdn.openbsd.org/pub/OpenBSD/6.4/amd64/SHA256
>
> I have tested with various CPUs on my RHEL 7.5 and it seems that
> Opteron_G3/G4/G5 and FX-8350 (host-passthrough) causes the
> panic,while
> Opteron_G1/G2 is OK. Booting install63.iso on the same VM is OK and I
> got the installer prompt.
>
> Does anyone observes the same behaviour or it is only me ?
>
> Best Regards,
> Strahil Nikolov