Messages in this thread | | | Date | Tue, 21 Dec 2004 13:27:37 -0800 | From | Matt Mackall <> | Subject | Re: Lockup with 2.6.9-ac15 related to netconsole |
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On Tue, Dec 21, 2004 at 09:48:53PM +0100, Francois Romieu wrote: > Mark Broadbent <markb@wetlettuce.com> : > [...] > > Using the patch supplied I get no hang, just the message 'netconsole > > raced' output to the console and the packet capture proceeds as normal. > > Thanks > > The patch is more a bandaid for debugging than a real fix. The netconsole > will drop some messages until its locking is fixed
Unfortunately there's no good way to fix its locking in this circumstance (or the harder case of driver-private locks). I think I'll just have to come up with some scheme for queueing messages that arrive when the queue lock is held.
> If you can issue one more test, I'd like to know if some messages appear > on the VGA console around the time at which tcpdump is started (the test > assumes that netconsole is not used/insmoded at all). Please check that > the console log_level is set high enough as it will be really disappointing > if nothing appears :o)
I think it's the promiscuous mode message itself that's the problem but I've not had time to reproduce it.
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