Re: Crash

kkjoe kkjoe wrote:
> Hello,
>
> i have recompiled the kernel and the module and could reproduce the oops.
>
> [<c1166438>] dsp_function+0x994/0x1e3c [mISDN_dsp]
> [<c0059a88>] bchannel_bh+0x130/0x148 [mISDN_core]
> [<8013dd38>] run_workqueue+0xb4/0x2d0
> [<8013ed64>] worker_thread+0x94/0x140
> [<80143a3c>] kthread+0x80/0xa8
> [<80106010>] kernel_thread_helper+0x10/0x18
>
> // Get Symbol offset
> /mnt/cf0/modules/misdn # cat /sys/module/mISDN_dsp/sections/.init.text
> 0xc0079000
>
> // Load Symbol file
> /mnt/cf0/modules/misdn # /mnt/cf0/bin/gdb mISDN_dsp.ko
> GNU gdb 6.8
> Copyright (C) 2008 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 "mipsel-unknown-linux-gnu"...
> (gdb) add-symbol-file /mnt/cf0/modules/misdn/mISDN_dsp.o 0xc0079000
> add symbol table from file "/mnt/cf0/modules/misdn/mISDN_dsp.o" at
>     .text_addr = 0xc0079000
> (y or n) y
> Reading symbols from /mnt/cf0/modules/misdn/mISDN_dsp.o...done.
> (gdb)
>
> // Get source line  - does not work
> (gdb) b *dsp_function + 0x994
> Breakpoint 1 at 0x1438
> -> I do not get any source line
> // get start location
> (gdb) disassemble dsp_function
> Dump of assembler code for function dsp_function:
> 0x00000aa4 <dsp_function+0>:    addiu    sp,sp,-88
>
> (gdb) b *dsp_function + 0x00001e3c
> Breakpoint 3 at 0x28e0: file 
> /home/kkjoe/test/test1/mIsdn/mISDN/standalone/drivers/isdn/mISDN/dsp_cmx.c, 
> line 1922.
>
> best regards and thank you very much for your support
>
>
> 2013/5/9 jolly <[email protected] <mailto:[email protected]>>
>
>     kkjoe kkjoe wrote:
>     > Do i have to rebuild the kernel and the misdn modules with debugging
>     > information ?
>     yes.
>
>
can you try to test some words before and after, like 0x988-0x99f ? area 
there lines close before and after the crash point? did you re-compile 
misdn after adding kernel debugging? anyone else an idea how to find 
that line?

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