Caz, For the record, it looks like this might not be a problem with your kgdb changes. I just tried this with normal GDB and it has the same next/step issue and the same Unknown Error from fin. So it looks like it might be a problem with the kgdb hooks.
Jason? -derek Derek Atkins <[email protected]> writes: > Caz, > > Using your gdb-6.8-kgdblight and 2.6.27 I'm having some single-stepping > problems that I didn't have with my pervious gdb-6.8 with kgdb-2.6.23. > > I was able to set a breakpoint just fine. The breakpoint hit. > Then I wanted to step through the program but when I try I have > issues. It seems like 'next' is acting just like 'step'.. And > 'fin' just doesn't work at all. The "Unknown error" looks suspiciously > like "(signed long)-1" -- I'm working on a 32-bit Host with a 32-bit > target. > > Below is the gdb info... > > -derek > > (gdb) c > Continuing. > [Switching to Thread 1028] > > Breakpoint 2, mydriver_do_requests (q=0xde0857e8) > at my-driver.c:699 > 699 { > (gdb) n > 701 struct mydriver_config *cfg = q->queuedata; > (gdb) > 704 ENTER("%p", q); > (gdb) > 701 struct mydriver_config *cfg = q->queuedata; > (gdb) > 704 ENTER("%p", q); > (gdb) > printk (fmt=0x14cc2 <Address 0x14cc2 out of bounds>) at kernel/printk.c:599 > 599 { > (gdb) n > 604 r = vprintk(fmt, args); > (gdb) > vprintk (fmt=0x8957e589 <Address 0x8957e589 out of bounds>, > args=0x80be56c7 <Address 0x80be56c7 out of bounds>) at kernel/printk.c:666 > 666 { > (gdb) > vprintk (fmt=0xe09bfc23 "<6>ENTER[%p]: %s() %p\n", args=0xde54ebd4 "") > at kernel/printk.c:210 > 210 if (boot_delay == 0 || system_state != SYSTEM_BOOTING) > (gdb) > 668 int current_log_level = default_message_loglevel; > (gdb) fin > Run till exit from #0 vprintk (fmt=0xe09bfc23 "<6>ENTER[%p]: %s() %p\n", > args=0xde54ebd4 "") at kernel/printk.c:668 > Warning: > Cannot insert breakpoint 0. > Error accessing memory address 0xc06409b5: Unknown error 4294967295. -- Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory Member, MIT Student Information Processing Board (SIPB) URL: http://web.mit.edu/warlord/ PP-ASEL-IA N1NWH [email protected] PGP key available ------------------------------------------------------------------------------ Register Now & Save for Velocity, the Web Performance & Operations Conference from O'Reilly Media. Velocity features a full day of expert-led, hands-on workshops and two days of sessions from industry leaders in dedicated Performance & Operations tracks. Use code vel09scf and Save an extra 15% before 5/3. http://p.sf.net/sfu/velocityconf _______________________________________________ Kgdb-bugreport mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/kgdb-bugreport
