From: Linus Torvalds <torvalds@linux-foundation.org>
To: "Brandeburg, Jesse" <jesse.brandeburg@intel.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Arjan van de Ven <arjan@infradead.org>
Subject: RE: [regression] Latest git has WARN_ON storm with e1000e driver
Date: Fri, 3 Oct 2008 09:36:28 -0700 (PDT) [thread overview]
Message-ID: <alpine.LFD.2.00.0810030935390.3208@nehalem.linux-foundation.org> (raw)
In-Reply-To: <36D9DB17C6DE9E40B059440DB8D95F520655F9A0@orsmsx418.amr.corp.intel.com>
On Fri, 3 Oct 2008, Brandeburg, Jesse wrote:
>
> Linus Torvalds wrote:
> > So this whole bug is actually because that debug test is just
> > _broken_. It shouldn't be WARN_ON(preempt_count()), it should be
> > 'might_sleep()', which does it right.
> >
> > The right thing to check is "in_atomic() || irqs_disabled()".
>
> okay, do you want me to post a patch? I think Thomas is probably
> offline due to fridaynightitis. Change the code to:?
>
> WARN_ON(in_atomic() || irqs_disabled);
No, literally just "might_sleep()". It then does everything right,
including taking into account that we allow certain behavior during bootup
that we don't allow later.
Linus
next prev parent reply other threads:[~2008-10-03 16:37 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-03 8:41 Christian Borntraeger
2008-10-03 14:52 ` Linus Torvalds
2008-10-03 15:20 ` Christian Borntraeger
2008-10-03 15:36 ` Linus Torvalds
2008-10-03 15:50 ` Christian Borntraeger
2008-10-03 15:55 ` Christian Borntraeger
2008-10-03 16:05 ` Linus Torvalds
2008-10-03 16:23 ` Linus Torvalds
2008-10-03 16:25 ` Brandeburg, Jesse
2008-10-03 16:36 ` Linus Torvalds [this message]
2008-10-03 19:41 ` Thomas Gleixner
2008-10-03 16:25 ` Christian Borntraeger
2008-10-03 15:08 ` Arjan van de Ven
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