I wanted to know what an API is returning in a kernel module < vnos-module.ko>.
Go to know from few forms that it is not that straight forward, we need to load the symbol table to debug a kernel module.
So all I did is, 1. tried to find .text .bss and .data section address of the kernel module. 2. Add symbol table file using add-symbol-file command in gdb.
But I get error saying "Reading symbols from /fabos/modules/vnos-module.ko...(no debugging symbols found)...done."
is there anything I am missing here?
root@sw0:/sys/module/vnos_module/sections# cat .text .data .bss
0xf7f7f000
0xf7fb7a30
0xf7fc3da4
root@sw0:/sys/module/vnos_module/sections# gdb /fabos/modules/vnos-module.ko
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Reading symbols from /fabos/modules/vnos-module.ko...(no debugging symbols found)...done.
add-symbol-file /fabos/modules/vnos-module.ko 0xf7f7f000 -s .data 0xf7fb7a -s .bss 0xf7fc3da4
add symbol table from file "/fabos/modules/vnos-module.ko" at
.text_addr = 0xf7f7f000
.data_addr = 0xf7fb7a30
(y or n) y
Reading symbols from /fabos/modules/vnos-module.ko...(no debugging symbols found)...done.
Please help.
