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- - How can I debug loadable modules at run time?
Here is my way:
( /tmp/mymodule.ko exists on both [Host] and [UML] )
+ [Host] # gdb linux
+ [Host] (gdb) ...
+ [Host] (gdb) r <params>
+ [UML] # insmod /tmp/mymodule.ko
+ [UML] # cat /sys/module/mymodule/sections/{.text,.bss,.data}
+ [Host] (gdb) add-symbol-file /tmp/mymodule.ko <.text_addr> -s .bss
<.bss_addr> -s .data <.data_addr>
+ ...
Tell me if I was wrong, thanks!
- - How can I set breakpoint at module's init function?
After add module's symbol, I set breakpoint at init function then
'rmmod' then re-'insmod' but gdb didn't break at init function. What was
wrong?
- - Sometimes gdb can't follow source codes in '.h' header files. Did I
miss something?
Thanks in advance,
Mikado.
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