* Jeremie Le Hen <jere...@le-hen.org> wrote: > I've got a panic obviously from the tty layer but I couldn't get the > panic string as no remote system was connected using serial console, and > I don't know how to print it from DDB.
Hmmm... This is a tricky one, but I think I do understand what's going
on here. If you close and revoke a TTY at the very exact moment, it may
call destroy_dev_sched_cb() twice, where the second time it gets called
on a null pointer.
===================================================================
--- sys/kern/tty.c (revision 209570)
+++ sys/kern/tty.c (working copy)
@@ -1040,7 +1040,8 @@
tp->t_dev = NULL;
tty_unlock(tp);
- destroy_dev_sched_cb(dev, tty_dealloc, tp);
+ if (dev != NULL)
+ destroy_dev_sched_cb(dev, tty_dealloc, tp);
}
void
I guess it's very hard to reproduce, right? If so, I'll just commit it
to SVN. Thanks for reporting!
--
Ed Schouten <e...@80386.nl>
WWW: http://80386.nl/
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