(no subject)

[sridhar vaidyanathan]

I am trying to debug a kernel over a remote serial console. I get 
Ignoring packet error ..
kgdb page suggests that it might be due to the speed mismatch. i tried 
stty ispeed 9600 ospeed 9600 < /dev/ttyS0 
on the development machine and have passed serial=0,9600n8 option and 
gdbbaud=9600 via lilo to the debug kernel. 

when i run 
%stty speed 
on the development machine it still reports 38400.
so i changed the gdbbaud and serial= values to 38400 on the test machine. even 
this doesn't work.
any ideas?also on the development machine when i invoke 
%gdb bzImage 
gdb reports that bzImage is not an Executable file format and it is unable to 
recognize the format. what is the problem?
-sridhar
ps: i have tried redirecting the kernel messages( without patching it with 
kgdb) over the serial line and read it with minicom . that works fine.

please email as i am not subscribed.

Re:

[Steven Dake]

sridhar vaidyanathan wrote:

>I am trying to debug a kernel over a remote serial console. I get 
>Ignoring packet error ..
>
I have seen this and in my case, it had to do with printks coming over 
the serial link with console redirection.

>kgdb page suggests that it might be due to the speed mismatch. i tried 
>stty ispeed 9600 ospeed 9600 < /dev/ttyS0 
>on the development machine and have passed serial=0,9600n8 option and 
>gdbbaud=9600 via lilo to the debug kernel. 
>
>when i run 
>%stty speed 
>on the development machine it still reports 38400.
>so i changed the gdbbaud and serial= values to 38400 on the test machine. even 
>this doesn't work.
>any ideas?also on the development machine when i invoke 
>%gdb bzImage 
>
try gdb vmlinux.  This is the uncompressed image that gdb knows how to 
read.  bzImage is the compressed kernel that you should boot.  The 
vmlinux file should match the bzImage file.

>gdb reports that bzImage is not an Executable file format and it is unable to 
>recognize the format. what is the problem?
>-sridhar
>ps: i have tried redirecting the kernel messages( without patching it with 
>kgdb) over the serial line and read it with minicom . that works fine.
>
>please email as i am not subscribed.
>-
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2.5.4x booting from floppy or loadlin

[Rene Blokland]

Hi All,
It is not possible anymore from dos with loadlin and from a floppy which
contains a kernel image written with dd, It used to work for some years.
My system is arch i386. gcc-3.2 glibc-3.2.1
What happens is:

Uncompressing Linux ...
ran out of input data

  --System halted  

Any clues?
-- 
Groeten / Regards, Rene J. Blokland