"Ignoring packet error" with vmlinux

Ran Shalit ranshalit@gmail.com
Fri Aug 21 08:41:00 GMT 2015


בתאריך 20 באוג 2015 19:03, "Ran Shalit" <ranshalit@gmail.com> כתב:
>
> 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
> Copyright (C) 2015 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> 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:
> <http://www.gnu.org/software/gdb/documentation/>.
> For help, type "help".
> Type "apropos word" to search for commands related to "word".
> 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

Hello,

The subject of email was wrong. I changed it.

Regards
Ran



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