https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250455
Bug ID: 250455
Summary: General protection fault when booting 12.1 via
qemu/i386 with -enable-kvm -cpu max
Product: Base System
Version: 12.1-RELEASE
Hardware: i386
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
I'm trying to boot FreeBSD-12.1-RELEASE-i386-bootonly.iso inside qemu:
$ qemu-system-i386 -enable-kvm -boot d -cdrom
FreeBSD-12.1-RELEASE-i386-bootonly.iso -cpu max -display curses
To reproduce the fault, both -enable-kvm and '-cpu max' must be used.
The host is Gentoo Linux. The CPU is:
processor : 0
vendor_id : AuthenticAMD
cpu family : 23
model : 113
model name : AMD Ryzen 5 3600 6-Core Processor
stepping : 0
microcode : 0x8701021
cpu MHz : 2794.608
cache size : 512 KB
physical id : 0
siblings : 12
core id : 0
cpu cores : 6
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 16
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt p
dpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid
aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcn
t aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a
misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_c
ore perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate sme ssbd
mba sev ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 cqm rdt_a rdse
ed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc
cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru
wbnoinvd arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid
decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif umip rdp
id overflow_recov succor smca
bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
bogomips : 7190.59
TLB size : 3072 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 43 bits physical, 48 bits virtual
power management: ts ttp tm hwpstate cpb eff_freq_ro [13] [14]
I'm getting:
Fatal trap 9: general protection fault while in kernel mode
cpuid = 0; apic id = 00
error code = 0
instruction pointer = 0x20:0x157cfe3
stack pointer = 0x28:0x2423bb8
frame pointer = 0x28:0x2423bdc
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = resume, IOPL = 0
current process = 0 ()
trap number = 9
panic: general protection fault
cpuid = 0
time = 1
KDB: stack backtrace:
#0 0x103c50e at kdb_backtrace+0x4e
#1 0xff6001 at vpanic+0x121
#2 0xff5ed4 at panic+0x14
#3 0x155cf0e at trap_fatal+0x34e
#4 0x155c392 at trap+0xd2
#5 0xffc0316d at PTDpde+0x4175
#6 0xf96644 at mi_startup+0xe4
#7 0x8fa05f at btext+0x5f
Uptime: 1s
I'm going to try installing it without '-cpu max' and then building fresh
kernel with debug.
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