kernel debug - "Reply contains invalid hex digit"

[Ran Shalit]

Hello,

I'm trying to debug kernel (vmlinux) with kgdb
I am using gdb version 7.9.1.

These are the logs in eclipse (host) and in target:


In eclipse I see the following:

Python Exception <type 'exceptions.ImportError'> No module named gdb:
/home/ubuntu/dtu/jjj/gdb-7.9.1/gdb/gdb: warning:
Could not load the Python gdb module from `/home/tigran/gdb/share/gdb/python'.
Limited Python support is available from the _gdb module.
Suggest passing --data-directory=/path/to/gdb/data-directory.

GNU gdb (GDB) 7.9.1
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and "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu
--target=powerpc-buildroot-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
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0xc03e366c in arch_kgdb_breakpoint () at kernel/debug/debug_core.c:1049
1049 wmb(); /* Sync point before breakpoint */
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Reply contains invalid hex digit 116
Ignoring packet error, continuing...
Function "main" not defined.          <-- lat message

And in target I see the following:
....
console [ttyS0] enabled
console [ttyS0] enabled
bootconsole [udbg0] disabled
bootconsole [udbg0] disabled
serial8250.0: ttyS1 at MMIO 0xe0004600 (irq = 17, base_baud = 16500000) is a 16A
kgdb: Registered I/O driver kgdboc.
kgdb: Waiting for connection from remote gdb...
-+$OK#9a+$OK#9a+$QC01#f5+$#00+$c03e3650dd033e20dd0440000000002fe100650100000000d
mtip32xx Version 1.3.1
Error creating debugfs parent
Uniform Multi-Platform E-IDE driver
ide-gd driver 1  <- got stuck here.

Does anyone have any idea ?

Regards,
Ran
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