From: Ingo Molnar <mingo@elte.hu>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>, Tejun Heo <tj@kernel.org>,
paulmck@linux.vnet.ibm.com,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Yinghai Lu <yinghai@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Brian Gerst <brgerst@gmail.com>
Subject: Re: Seeing "huh, entered softirq 8 ffffffff802682aa preempt_count 00000100, exited with 00010100?" in tip.git
Date: Sat, 31 Jan 2009 01:54:45 +0100 [thread overview]
Message-ID: <20090131005445.GB21022@elte.hu> (raw)
In-Reply-To: <4983A00F.5040505@zytor.com>
* H. Peter Anvin <hpa@zytor.com> wrote:
> Jeremy Fitzhardinge wrote:
>>
>> I found my bug. Turns out all my CPUs were sharing the same kernel
>> stack (!), which means it was working surprisingly well, considering...
>>
>
> ROTFLMAO!
muhaha. I wrote such a bug only once in my whole life - back when we wrote
the first version of the Linux SMP code, more than a decade ago. It was a
lot of fun to debug - the exact point and nature of the crash changed as i
added printks to the bootup code ;-)
Ingo
prev parent reply other threads:[~2009-01-31 0:55 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-29 22:12 Jeremy Fitzhardinge
2009-01-30 0:59 ` Paul E. McKenney
2009-01-30 1:44 ` Jeremy Fitzhardinge
2009-01-30 15:08 ` Ingo Molnar
2009-01-30 16:40 ` Jeremy Fitzhardinge
2009-01-30 22:17 ` Ingo Molnar
2009-01-30 22:34 ` Ingo Molnar
2009-01-31 0:48 ` Jeremy Fitzhardinge
2009-01-31 0:49 ` H. Peter Anvin
2009-01-31 0:54 ` Ingo Molnar [this message]
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