kernel debug problem

Hi All i am using ubuntu8.10 with kernel 2.6.27 installed in my system. I've to debug the kernel(for learning purpose) using kgdb, for that i searched on net and found that kgdb is avaliaible only for 2.6.15 kernel source. so i downloaded 2.6.15 kernel source and put it in my /usr/src directory after that i reffered the link:- [COLOR="Blue"]http://beginlinux.wordpress.com/2008/12/03/how-to-compile-an-ubuntu-810-kernel/[/COLOR] (i copied the config file from the kernel installed in my machine having kernel 2.6.27)but in the compilatoin it is giving me the error:

include/asm/mpspec_def.h:78: warning: packed attribute ignored for field of type unsigned char[6] arch/i386/kernel/apic.c: In function smp_apic_timer_interrupt: arch/i386/kernel/apic.c:1136: sorry, unimplemented: inlining failed in [B][COLOR="Red"]call to smp_local_timer_interrupt: function body not available arch/i386/kernel/apic.c:1205: sorry, unimplemented: called from here make[1]: * [arch/i386/kernel/apic.o] Error 1 make: * [arch/i386/kernel] Error 2[/COLOR][/B]

so how to work around this problem? plz help.

and one more thing is there any version of kgdb available to debug the 2.6.27 kernel?

thanks

anuragccsu said: Hi All

i am using ubuntu8.10 with kernel 2.6.27 installed in my system. I've to debug the kernel(for learning purpose) using kgdb, for that i searched on net and found that kgdb is avaliaible only for 2.6.15 kernel source. so i downloaded 2.6.15 kernel source and put it in my /usr/src directory after that i reffered the link:- [COLOR="Blue"]http://beginlinux.wordpress.com/2008/12/03/how-to-compile-an-ubuntu-810-kernel/[/COLOR] (i copied the config file from the kernel installed in my machine having kernel 2.6.27)but in the compilatoin it is giving me the error:

include/asm/mpspec_def.h:78: warning: packed attribute ignored for field of type unsigned char[6] arch/i386/kernel/apic.c: In function smp_apic_timer_interrupt: arch/i386/kernel/apic.c:1136: sorry, unimplemented: inlining failed in [B][COLOR="Red"]call to smp_local_timer_interrupt: function body not available arch/i386/kernel/apic.c:1205: sorry, unimplemented: called from here make[1]: * [arch/i386/kernel/apic.o] Error 1 make: * [arch/i386/kernel] Error 2[/COLOR][/B]

so how to work around this problem? plz help.

and one more thing is there any version of kgdb available to debug the 2.6.27 kernel?

thanks

Hello! I have found the same problem compiling the kernel 2.6.11.12 I have tried also to don't include APIC support in the configuration menu, but without success!

While you need 2.6.15 to use the full patches, kgdb is in 2.6.27 that you have by default on your system.

you need boot arguments of kgdboc=ttyS1,115200 for com2 and S0 for com1 of course.

you of course need 2 machines... but I'm sure you know that.