From: Avi Kivity <avi@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: Stefan Hajnoczi <stefanha@gmail.com>,
"Berg, Johannes" <johannes.berg@intel.com>,
kvm <kvm@vger.kernel.org>,
Intel Linux Wireless <ilw@linux.intel.com>
Subject: Re: [Ilw] iwlagn and kvm related "BUG: scheduling while atomic" after resuming
Date: Tue, 19 Jul 2011 12:16:54 +0300 [thread overview]
Message-ID: <4E254B86.5080004@redhat.com> (raw)
In-Reply-To: <20110719091317.GP2400@redhat.com>
On 07/19/2011 12:13 PM, Gleb Natapov wrote:
> > Preemption is still disabled at this point. Where does the
> > "scheduling while atomic" come from? Nothing in this area attempts
> > to schedule.
> >
> 0x10000000 in preemption counter is PREEMPT_ACTIVE, so this looks like
> preemptable kernel tries to preempt itself.
>
Yes, it's the wlan interrupt comming after local_irq_enable(). But it
still doesn't make sense. We're in a preempt_disable() section, so the
scheduler shouldn't have been called in the first place.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2011-07-19 9:17 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-18 19:14 iwlagn and kvm related "BUG: scheduling while atomic" after resuming Stefan Hajnoczi
2011-07-18 20:18 ` [Ilw] " Berg, Johannes
2011-07-18 21:51 ` Stefan Hajnoczi
2011-07-19 9:04 ` Avi Kivity
2011-07-19 9:13 ` Gleb Natapov
2011-07-19 9:16 ` Avi Kivity [this message]
2011-07-19 9:18 ` Gleb Natapov
2011-07-19 14:23 ` Stefan Hajnoczi
2011-07-19 16:51 ` Avi Kivity
2011-07-19 20:20 ` Stefan Hajnoczi
2011-07-19 20:27 ` Stefan Hajnoczi
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