Re: [PATCH] sched: set TAINT_UNSAFE_SMP after sleep-in-atomic bug
From: Peter Zijlstra
Date: Thu May 10 2012 - 08:05:46 EST
On Thu, 2012-05-10 at 14:56 +0400, Konstantin Khlebnikov wrote:
> Peter Zijlstra wrote:
> > On Thu, 2012-05-10 at 11:54 +0400, Konstantin Khlebnikov wrote:
> >> Usually sleep-in-atomic bugs are followed by dozens other warnings.
> >> This patch should help to figure out original source of problem.
> >> This taint flag also turns off lockdep, because it can go mad after that.
> > There's already TAINT_WARN any output with that set should be ignored.
> Where? I do not see here anything which might set TAINT_WARN.
> Or you suggest to use TAINT_WARN instead of TAINT_UNSAFE_SMP?
Gargh, yeah it doesn't use WARN and related infrastructure to print that
msg so it missed out on the whole TAINT_WARN stuff.
Yeah, make it set TAINT_WARN or possibly convert the thing to use WARN.
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