From: Paul Fulghum <paulkf@microgate.com>
To: Chuck Ebbert <76306.1226@compuserve.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: Success: tty_io flush_to_ldisc() error message triggered
Date: Sat, 22 Jul 2006 09:04:44 -0500 [thread overview]
Message-ID: <44C2307C.9060607@microgate.com> (raw)
In-Reply-To: <200607212301_MC3-1-C5B7-9F6C@compuserve.com>
Chuck Ebbert wrote:
> Using the patch below that you sent me, this message printed today on
> my SMP system when terminating pppd:
>
> flush_to_ldisc - TTY_FLUSHING set, low_latency=0
>
> And this bug is also in 2.6.17.4 - I forgot to reboot into 2.6.16.x
> and the system locked up the same way 2.6.16 used to. That was made
> even more fun by the 'SysRq broken on SMP' bug fixed by a pending
> 2.6.17.7 patch...
That confirms my thoughts on what went wrong:
multiple copies of the queued work (flush_to_ldisc)
running in parallel and corrupting the free buffer list.
A cleaner fix for this is already
in the 2.6.18 rc series.
Thanks,
Paul
--
Paul Fulghum
Microgate Systems, Ltd.
next prev parent reply other threads:[~2006-07-22 14:04 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-22 2:58 Success: tty_io flush_to_ldisc() error message triggered Chuck Ebbert
2006-07-22 14:02 ` Paul Fulghum
2006-07-22 14:04 ` Paul Fulghum [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-07-22 16:07 Chuck Ebbert
2006-07-22 16:41 ` Paul Fulghum
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