On Fri, Jun 3, 2011 at 7:02 PM, Arne Jansen <lists@xxxxxxxxxxxxxx> wrote: > > No, it doesn't trigger, but the hang is not as complete as I first > thought. A running iostat via ssh continues to give output for a while, > the serial console still reacts to return and prompts for login. But > after a while more and more locks up. The console locks as soon as I > sysrq-t. Is it the tty rescheduling bug? That would explain the printk's mattering. Remove the schedule_work() call from flush_to_ldisc() in drivers/tty/tty_buffer.c and see if the problem goes away. See the other discussion thread on lkml ("tty breakage in X (Was: tty vs workqueue oddities)") Hmm? Linus -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html