On Sat, Sep 19, 2009 at 6:58 PM, Loic Pefferkorn <loic-kernelnewbies@xxxxxxxxxxxxx> wrote: > Hello, > > I'm trying to put a breakpoint on do_sys_open function through Kdb on a > linux-2.6.30 with the command: > > kdb> bp do_sys_open > > But I get the following error: > > Invalid address for breakpoint, ignoring bp command > diag: -21: Invalid address > kdb> > > However I'm able to disassemble this function using id command, which means > do_sys_open symbol is known to kdb. > > Does someone has an idea about this error ? > > Thanks in advance > Loic Not a very specific idea. The fact that you can dissasemble do_sys_open means the symbol is resolvable. Thus I suspect it is either a bug in KDB or KDB is unable to put a breakpoint in that respective address since the instruction(s) in that address is still actively executed, thus it can not be replaced with trapping instruction ( INT 3 right? or something like that) -- regards, Mulyadi Santosa Freelance Linux trainer blog: the-hydra.blogspot.com -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
