> >
> > The trace file is available here:
> >
> > http://oss.xes-inc.com/xtmp/trace-pcimem-memtest86-reset.dat.gz
>
> Run QEMU with "-no-reboot -no-shutdown -monitor stdio". When it
> crashes, run "info registers" and then "x/70i 0", and email the output.
QEMU output:
---[snip]---
$ qemu-system-x86_64 -enable-kvm -name testVM6 -machine \
q35,accel=kvm,usb=off -cpu Haswell -m 256 -realtime mlock=off -smp \
1,sockets=1,cores=1,threads=1 -boot order=d image.memtest -vga std \
-display vnc=${LAN_IP}:0 -mem-path \
/sys/bus/pci/devices/0000\:01:00.0/resource2_wc --mem-prealloc -cdrom \
memtest86+-5.01.iso -s -S -d cpu_reset,unimp,guest_errors,int,pcall \
-no-reboot -no-shutdown -monitor stdio
QEMU 2.2.0 monitor - type 'help' for more information
(qemu) CPU Reset (CPU 0)
[[ trimmed initial reset with all zeroed registers ]]
CPU Reset (CPU 0)
EAX=00000000 EBX=00000000 ECX=00000000 EDX=000306c1
ESI=00000000 EDI=00000000 EBP=00000000 ESP=00000000
EIP=0000fff0 EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 00000000 0000ffff 00009300
CS =f000 ffff0000 0000ffff 00009b00
SS =0000 00000000 0000ffff 00009300
DS =0000 00000000 0000ffff 00009300
FS =0000 00000000 0000ffff 00009300
GS =0000 00000000 0000ffff 00009300
LDT=0000 00000000 0000ffff 00008200
TR =0000 00000000 0000ffff 00008b00
GDT= 00000000 0000ffff
IDT= 00000000 0000ffff
CR0=60000010 CR2=00000000 CR3=00000000 CR4=00000000
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000
DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
CCS=00000000 CCD=00000000 CCO=DYNAMIC
EFER=0000000000000000
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000
XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000
XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000
XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000
---[snip]---
gdb output:
---[snip]---
real-mode-gdb$ info registers
eax 0x18 24
ecx 0x2000 8192
edx 0x92 146
ebx 0x0 0
esp 0x800 0x800
ebp 0x1d0 0x1d0
esi 0x5a00 23040
edi 0x3ff4 16372
eip 0x58 0x58
eflags 0x10046 [ PF ZF RF ]
cs 0x9020 36896
ss 0x9000 36864
ds 0x18 24
es 0x18 24
fs 0x9000 36864
gs 0x9000 36864
real-mode-gdb$ x/70i 0
0x0: push bx
0x1: inc WORD PTR [bx+si]
0x3: lock push bx
0x5: inc WORD PTR [bx+si]
0x7: lock ret
0x9: loop 0xb
0xb: lock push bx
0xd: inc WORD PTR [bx+si]
0xf: lock push bx
0x11: inc WORD PTR [bx+si]
0x13: lock push bx
0x15: inc WORD PTR [bx+si]
0x17: lock push bx
0x19: inc WORD PTR [bx+si]
0x1b: lock push bx
0x1d: inc WORD PTR [bx+si]
0x1f: lock movs WORD PTR es:[di],WORD PTR ds:[si]
0x21: inc BYTE PTR [bx+si]
0x23: lock xchg cx,bp
0x26: add al,dh
0x28: jmp 0xf9
0x2b: lock jmp 0xfd
0x2f: lock jmp 0x101
0x33: lock jmp 0x105
0x37: lock jmp 0x109
0x3b: lock jmp 0x10d
0x3f: lock mov dl,BYTE PTR [bx+si+0x0]
0x43: ror BYTE PTR [di-0x8],0x0
0x47: lock inc cx
0x49: clc
0x4a: add al,dh
0x4c: (bad)
0x4d: jcxz 0x4f
0x4f: lock cmp di,sp
0x52: add al,dh
0x54: pop cx
0x55: clc
0x56: add al,dh
=> 0x58: cs
0x59: call 0xf05c
0x5c: shr bh,cl
0x5e: add al,dh
0x60: add ax,0xcf
0x63: lock repnz out 0x0,al
0x67: lock outs dx,BYTE PTR ds:[si]
0x69: inc BYTE PTR [bx+si]
0x6b: lock push bx
0x6d: inc WORD PTR [bx+si]
0x6f: lock push bx
0x71: inc WORD PTR [bx+si]
0x73: lock push bx
0x75: inc WORD PTR [bx+si]
0x77: lock hlt
0x79: aas
0x7a: add BYTE PTR [bx+si-0x7a78],dl
0x7e: add al,al
0x80: push bx
0x81: inc WORD PTR [bx+si]
0x83: lock push bx
0x85: inc WORD PTR [bx+si]
0x87: lock push bx
0x89: inc WORD PTR [bx+si]
0x8b: lock push bx
0x8d: inc WORD PTR [bx+si]
0x8f: lock push bx
0x91: inc WORD PTR [bx+si]
0x93: lock push bx
0x95: inc WORD PTR [bx+si]
0x97: lock push bx
0x99: inc WORD PTR [bx+si]
---[snip]---
Thanks,
Nate
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