Messages in this thread | | | From | "Mathur, Shobhit" <> | Date | Thu, 17 Apr 2003 06:16:16 +0530 | Subject | inux-source debugging with kgdb-patch |
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Hello,
BACKGROUND:
I was keen to see kgdb running for purely academic reasons. Thus, I made a setup of 2 machines for source-level debugging of the linux-kernel. The procedure mentioned on the web-site [ kgdb.sourceforge.net] has been adhered to. I was able to successfully configure the setup. Also, I decided to use "ddd" front-end on gdb [local m/c] for debugging the kgdb-patched kernel on the remote machine, which is the usual setup for such debugging-efforts. The m/c to be debugged stops with the message "Waiting for connection from remote gdb..." until the "target remote" command is run from the "gdb" prompt of "ddd", upon which the m/c to be debugged continues it's bootup till it shows the command-prompt.
PROBLEM:
I was interested in setting a break-point in start_kernel thru' "ddd" such that the boot-up of the m/c to be debugged could be analysed step-by-step remotely. Though, I am able to set the breakpoint in start_kernel(), the commands "run" or "continue" on the "gdb" prompt, only throw up the following errors :
(gdb) info break Num Type Disp Enb Address What 7 breakpoint keep y 0xc027e7f0 in start_kernel at init/main.c:614 (gdb) run warning: shared library handler failed to enable breakpoint warning: Cannot insert breakpoint 7: Cannot access memory at address 0xc027e7f0
QUESTION:
I very strongly suspect that this exercise follows a particular sequence of steps to get it right. Either I am missing some step or I am not following the "order". In either case, I would be glad to receive some help/comments on my academic endeavour to be able to remotely debug the kernel.
- Kindly let me know a solution
- TIA
- Shobhit Mathur - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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