Re: Panic on -CURRENT after LDT changes

On Sat, 2007-05-26 at 00:50 +0200, Attilio Rao wrote:
> Joe Marcus Clarke wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> > 
> > 
> > Thanks.  I just finished building a PREEMPTION-less kernel.  I'll hold
> > off on the test until I get your patch.
> 
> Hello Joe,
> can you please try this patch:
> http://users.gufi.org/~rookie/works/patches/sys_machdep.diff
> 
> maybe using with and without PREEMPTION?

With PREEMPTION yields a new crash:

panic: blockable sleep lock (sleep mutex) system map
_at_ /usr/src/sys/vm/vm_map.c:2395
Uptime: 2m11s
Physical memory: 2022 MB
Dumping 82 MB: 67 51 35 19 3

#0  sched_switch (td=0xc07d1020, newtd=0xc4c70360, flags=1)
    at /usr/src/sys/kern/sched_4bsd.c:933
933             sched_lock.mtx_lock = (uintptr_t)td;
(kgdb) bt
#0  sched_switch (td=0xc07d1020, newtd=0xc4c70360, flags=1)
    at /usr/src/sys/kern/sched_4bsd.c:933
#1  0xc0567a1d in mi_switch (flags=Variable "flags" is not available.
) at /usr/src/sys/kern/kern_synch.c:464
#2  0xc06c8c90 in scheduler (dummy=0x0) at /usr/src/sys/vm/vm_glue.c:724
#3  0xc052e676 in mi_startup () at /usr/src/sys/kern/init_main.c:250
#4  0xc0438e15 in begin () at /usr/src/sys/i386/i386/locore.s:348

#0  sched_switch (td=0xc07d1020, newtd=0xc4c70360, flags=1)
    at /usr/src/sys/kern/sched_4bsd.c:933
        p = (struct proc *) 0xc07d0de0
#1  0xc0567a1d in mi_switch (flags=Variable "flags" is not available.
) at /usr/src/sys/kern/kern_synch.c:464
        new_switchtime = 153236108634
        td = (struct thread *) 0xc07d1020
        p = (struct proc *) 0xc07d0de0
        __func__ = "mi_switch"
#2  0xc06c8c90 in scheduler (dummy=0x0) at /usr/src/sys/vm/vm_glue.c:724
        p = (struct proc *) 0x0
        td = Variable "td" is not available.

I will rebuild without PREEMPTION, and let you know.  Note: I am no
longer have console access, so live debugging is out until Tuesday.

Joe


> 
> Thanks,
> Attilio
> 
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