Re: crash while switching vts between x and console
Matthew Dillon wrote:
>
> : dumped core - see /var/crash/vmcore.0
> :
> :Sun Oct 31 00:39:05 PDT 2010
> :
> :Version String: DragonFly v2.9.0.89.gcd3c6-DEVELOPMENT #2: Sat Oct 30
> :14:14:38 PDT 2010 root@:/usr/obj/usr/src/sys/EAGLE
> :
> :panic: assertion: gd->gd_spinlocks_wr == 0 in bsd4_schedulerclock
> :...
> :exchange_scr(c05674a0,fffffffd,20007604,cec3f880,d22b8b80) at
> :exchange_scr+0x138
> :finish_vt_rel(d22b8c18,7,c064a7a0,c286ca98,c02bc049) at
> :finish_vt_rel+0x55 scioctl(d22b8b8c,c05619a8,cecf3110,20007604,d22b8c18)
> :at scioctl+0xae5 dev_dioctl(cecf3110,20007604,d22b8c18,7,cc850620) at
> :dev_dioctl+0xb0
> :devfs_fo_ioctl(cc8737f0,20007604,d22b8c18,cc850620,d22b8cf0) at
>
> Try removing the crit_exit/crit_enter in do_switch_scr().
>
> /usr/src/sys/dev/misc/syscons/syscons.c line ~2540
>
> static void
> do_switch_scr(sc_softc_t *sc)
> {
> lwkt_gettoken(&tty_token);
> vt_proc_alive(sc->new_scp);
>
> crit_exit(); <--- remove
> exchange_scr(sc); (keep)
> crit_enter(); <--- remove
> /* sc->cur_scp == sc->new_scp
>
> -Matt
this appears to help in 32bit mode.. I will try it in 64 bit mode which
currently crashes everytime I change from X to a vty
RG
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