linux-kernel - Re: 4.9-rc7: (forcedeth?) BUG: sleeping function called from invalid context at kernel/irq/manage.c:110

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Date:   Tue, 29 Nov 2016 11:50:36 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Meelis Roos <mroos@...ux.ee>
Cc:     Linux Kernel list <linux-kernel@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>
Subject: Re: 4.9-rc7: (forcedeth?) BUG: sleeping function called from invalid
 context at kernel/irq/manage.c:110

On Tue, Nov 29, 2016 at 1:16 PM, Meelis Roos <mroos@...ux.ee> wrote:
> [...]
>> But none of this looks new. I don't see _anything_ in any of these
>> areas that has changed since 4.8.
>>
>> Which is why I suspect you changed something in your setup wrt
>> netconsole or your kernel config?
>
> No changes that I could see. Only answered oldconfig questions, diff
> below. /etc/default/grub is from May so not changed recently. Just
> verified that 4.8.0 dmesg did not contain these warnings.

Hmm. I wonder if it might just be timing (the netpoll_poll_dev() thing
is only called conditionally, and it depends on magic details and I
guess you might just have gotten unlucky).

But it would be good if you can bisect it...

           Linus