Re: PROBLEM: Consistent lock up on >=2.6.8

From: Andrew Morton
Date: Mon Oct 04 2004 - 21:02:10 EST


Jason Stubbs <jstubbs@xxxxxxxxxxxxx> wrote:
>
> On Tuesday 05 October 2004 04:05, Andrew Morton wrote:
> > update_defense_level() is calling si_meminfo() from timer context. But
> > si_meminfo takes non-irq-safe locks.
> >
> > Move it all to keventd context.
>
> That appears to have fixed it. I'm running my regular test and, while
> interactivity is non-existent, it hasn't locked. I'll leave it going for
> another few hours and report back to confirm.
>
> Much gratitude. I should go out and buy a kernel book so that I may some day
> be able to repay the favour. :)

You reported the bug, then you applied and ran the debug patch and then you
sent back the info which was necessary to arrive at a fix and then you
tested the fix.

How could you possibly have anything further to "repay"?
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