John Baldwin wrote:
>
> On 28-May-01 Doug Barton wrote:
> > Gang,
> >
> > On the avi front, typing 'aviplay' with or without an argument is
> > guaranteed to instantly wedge the box. I attached a lot of running aviplay
> > through truss, but I have no way to know if it stopped at or before the
> > offending instruction. As for the general wonkiness of the system, I have
> > finally gotten a dump. The backtrace is below, let me know if there is
> > anything else I can do to help debug.
>
> Please try http://www.FreeBSD.org/~jhb/patches/ldt.patch.
This worked excellently for me! I patched the kernel and rebuilt, then
tested aviplay... success. Then I cvsup'ed, built/installed world and
kernel, and started stress testing. I'm currently running two builds of X
4, one over NFS and one local, 'make cleandir' in /usr/src, AND avifile
(ok, it's a little choppy, but still runs). I'd say it's probably safe to
go back in the water again. Next stop, re-enabling softupdates. :)
BTW, I'm probably wrong about this but looking at the patch it seems odd
to me that one of these is ifndef and the other is ifdef:
@@ -422,15 +433,21 @@
kmem_free(kernel_map, (vm_offset_t)old_ldt_base,
old_ldt_len * sizeof(union descriptor));
FREE(new_ldt, M_SUBPROC);
+#ifndef SMP
+ mtx_lock_spin(&sched_lock);
+#endif
} else {
pcb->pcb_ldt = pcb_ldt = new_ldt;
+#ifdef SMP
mtx_unlock_spin(&sched_lock);
+#endif
}
Just curious,
Doug (Thanks BTW)
--
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