Ren Zhen
2006-Jul-02 08:07 UTC
T23 lock up after enter KDB either on 6-STABLE or 7-CURRENT
After I login, press Ctrl+Alt+ESC, kernel says: KDB: enter: manual escape to debugger [thread pid 16 tid 100014 ] Stopped at kdb_enter+0x2b: nop db> Then, my T23 lock up. I can only switch off the computer. But, I use "boot -d" at booting kdb will work fine. I press c it continue. When "login:" displayed on the screen, I enter the KDB, it lock up again. Both 6-STABLE and 7-CURRENT have this problem. My T23's model is 2647-4NC. Piii 1.13 256M*2 SDR. I have uninstalled one DIMM, but it seems to have no help to this problem. My kernel configuration file is GENERIC with following debug options: options KDB options DDB options GDB options INVARIANTS options INVARIANT_SUPPORT options WITNESS options WITNESS_SKIPSPIN
Robert Watson
2006-Jul-02 10:54 UTC
T23 lock up after enter KDB either on 6-STABLE or 7-CURRENT
On Sun, 2 Jul 2006, Ren Zhen wrote:> After I login, press Ctrl+Alt+ESC, kernel says: > KDB: enter: manual escape to debugger > [thread pid 16 tid 100014 ] > Stopped at kdb_enter+0x2b: nop > db> > > Then, my T23 lock up. I can only switch off the computer. > > But, I use "boot -d" at booting kdb will work fine. I press c it continue. > When "login:" displayed on the screen, I enter the KDB, it lock up again. > > Both 6-STABLE and 7-CURRENT have this problem. > > My T23's model is 2647-4NC. Piii 1.13 256M*2 SDR. I have uninstalled one > DIMM, but it seems to have no help to this problem.Try compiling out device kbdmux and see if that fixes things? There are reported problems regarding kbdmux's interaction with the debugger. Robert N M Watson Computer Laboratory University of Cambridge> > My kernel configuration file is GENERIC with following debug options: > options KDB > options DDB > options GDB > options INVARIANTS > options INVARIANT_SUPPORT > options WITNESS > options WITNESS_SKIPSPIN > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >