[SerialICE] SerialICE Segmentation fault (core dumped)

Joseph Smith joe at settoplinux.org
Wed Jan 20 05:52:21 CET 2010



On Tue, 19 Jan 2010 23:50:05 +0100, Stefan Reinauer <stepan at coresystems.de>
wrote:
> On 1/19/10 11:17 PM, Alexander Graf wrote:
>> On 19.01.2010, at 23:12, Stefan Reinauer wrote
>>> On 1/19/10 10:17 PM, Joseph Smith wrote:
>>>
>>>> (gdb) bt
>>>> #0  cpu_register_physical_memory_offset (start_addr=4292345856,
>>>> size=524288,
>>>>    phys_offset=0, region_offset=0) at
/home/joe/qemu-0.11.0/exec.c:2327
>>>> #1  0x080715b8 in cpu_register_physical_memory (
>>>>    phys_offset=<value optimized out>, size=<value optimized out>,
>>>>    start_addr=<value optimized out>) at ../cpu-common.h:33
>>>> #2  serialice_register_physical (phys_offset=<value optimized out>,
>>>>    size=<value optimized out>, start_addr=<value optimized out>)
>>>>    at /home/joe/qemu-0.11.0/serialice.c:93
>>>>
>>>>
>>> This is almost there...
>>>
>>> Can you recompile Qemu and add "-g" to CFLAGS and try again? It does
>>> look suspicious that phys_offset and size are optimized out, though..
>>>
>>> BTW, I just tried SerialICE on an x86-64 OpenSUSE 11.2 system and it
>>> works nicely without a segfault. Maybe Fedora is using a buggy compiler
>>> or a specific compiler option that breaks things?
>>>
>> The trace says you're using env before it's initialized.
>>
> Thanks for spotting this, you're of course right.
>
> It's caused by some oddness in how KQEMU is initialized.
>
> Joseph:
> Please add --disable-kqemu to your Qemu configure options and the
> problem will go away.
>
Ok that seems to be a little better, but if I use the command in the
"SerialICE Qemu
README" I just get this:

[root at smitty2 qemu-0.11.0]# ./i386-softmmu/qemu -M -serialice /dev/ttyS0
-hda /dev/zero -L ./bios
Supported machines are:
pc         Standard PC (alias of pc-0.11)
pc-0.11    Standard PC (default)
pc-0.10    Standard PC, qemu 0.10
isapc      ISA-only PC

If I use the older command listed on the website it seems to get a little
further:

[root at smitty2 qemu-0.11.0]# ./i386-softmmu/qemu -serialice /dev/ttyS0 -hda
/dev/zero -L ./bios
SerialICE: Open connection to target hardware...
SerialICE: Waiting for handshake with target... target alife!
SerialICE: LUA init...
SerialICE: Starting LUA script
SerialICE: Registering physical memory areas for Cache-As-Ram:
Registering physical memory at 0xffd80000 (0x00080000 bytes)
Registering physical memory at 0xffbc0000 (0x00040000 bytes)
SerialICE: LUA script initialized.
VNC server running on `127.0.0.1:5900'
IO: outb 0080 <= 00
IO: outb 002e <= 55
IO: outb 002e <= 07
IO: outb 002f <= 07
IO: outb 002e <= 30
IO: outb 002f <= 01
IO: outb 002e <= aa
IO:  inb 0064 => 00
IO: outb 0064 <= 60
IO: outb 0060 <= 45
IO: outb 0080 <= 08
CPU: CPUID eax: 00000000; ecx: 00000000 =>
00000002.756e6547.6c65746e.49656e69
CPU: CPUID eax: 00000000; ecx: 6c65746e =>
00000002.756e6547.6c65746e.49656e69
Failed to run function SerialICE_msr_read_filter: serialice.lua:474: bad
argument #2 to 'band' (number expected, got nil)
[root at smitty2 qemu-0.11.0]# 

Help?

-- 
Thanks,
Joseph Smith
Set-Top-Linux
www.settoplinux.org




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