Re: [Mkdump-devel] how to debug mini-kernel not working....

[Tony C. <Ton...@re...>]

Thanks for your help.
Here is the console output at the end and just reboot itself:

# mkd_load
start mkd_load.
sleeping...
'/lib/modules/2.bdev is 0xc39fbf00
4.21-47.EL.rftsmbdev_get returns is 0x0
p/kernel/arch/i3kimage_alloc ok
86/kernel/mkexecminik commandline:  dump_dev=0x300005 dump_pfn=0x37404 
maxcpus=1 mem=16M ro console=tty0 console=ttyS0,19200n8 lpj=2367488 
no-hlt dump_delay=590.o' is loaded.
***setup memory ****
0 25c00000 90 0
90000 25c90000 1 1
91000 25c91000 6f 0
100000 25d00000 19e 1
29e000 25e9e000 162 0
400000 25800000 400 0
800000 25400000 7 1
807000 25407000 3f9 0
c00000 25000000 400 0
mkexec: kernel image ok...
'/boot/minik-2.6.9.bin' is loaded.
.
.
.

# echo 2 > /proc/mkexec/stats
Kernel panic: Compulsory dump(stat of mkexec was set as 2).
------------[ cut here ]------------
kernel BUG at panic.c:217!
invalid operand: 0000
mkexec vpnmod_smp.2.4.21.i686 fwmod_smp.2.4.21.i686 
vpntmod_smp.2.4.21.i686 pser rft e1000
CPU:    1
EIP:    0060:[<c0129d6f>]    Tainted: PF
EFLAGS: 00010282

EIP is at panic [kernel] 0x6f (2.4.21-47.EL.rftsmp/i686)
eax: f90c4510   ebx: 00000002   ecx: c0378fb0   edx: 000067dc
esi: eaaea180   edi: ffffffea   ebp: 00000002   esp: f1dabf60
ds: 0068   es: 0068   ss: 0068
Process bash (pid: 11210, stackpage=f1dab000)
Stack: c02b5a83 c0481440 f1dabf7c 00000002 eaaea180 f90c3ede f90c5cf0 
f1dabf8e
       00000002 eaaea1a0 00000002 00320000 00000000 c0166697 eaaea180 
b75f6000
       00000002 eaaea1a0 f1daa000 00000007 f1daa000 00000002 b75f6000 
bfffd758
Call Trace: [<f90c3ede>] f: 140  108 mkexec_write_stats [mkexec] 0xce
[<f90c5cf0>] -. 136   -1 .rodata.str1.4 [mkexec] 0x1b4
[<c0166697>] f; 108   64 sys_write [kernel] 0x97
[<c02a506f>] -*  64   -1 no_timing [kernel] 0x7

Code: 0f 0b d9 00 98 5a 2b c0 b9 00 e0 ff ff 21 e1 8b 51 20 c1 e2

minik: Mini Kernel Dump Start. dump cpu = 0
St<ar0t>Kienrg nemiln ipa kneircn:e =l*==*F*
a*l* *e xrceepatdyi otno== c=a              at
l image type 2....            l
*** image->reboot_code_addr 37407000
*** image->start 00090a80
*** image->swap_page_addr 28ab2000
*** cpu_has_pae 00000001
*** new_addr 00000000....@ ../arch/i386/kernel/machine_mkexec.c
*** start_addr 00090a80....@ ../arch/i386/kernel/machine_mkexec.c


Note: I have added some more printk inside machine_mkexec.c and other 
files.   The size of mini kernel is:
# ls -l minik-2.6.9.bin
-rwx------    1 root     root      1691782 Aug 11 17:59 minik-2.6.9.bin

Do you think the loading and executing of mini-kernel is ok? Or the 
mini-kernel is not build properly.  Apparently, no console output after 
that.
Actually, the dump_delay flag is not working. It simply reboot after a 
while.
Thanks again.



Itsuro Oda wrote:
> Hi,
>
> Can you show me console log ?
>
> Thanks.
> Itsuro Oda
>
> On Fri, 11 Aug 2006 17:27:58 -0700
> Tony Chung <Ton...@re...> wrote:
>
>