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From: "Arend van Spriel" <arend@broadcom.com>
To: "Stanislaw Gruszka" <sgruszka@redhat.com>
Cc: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Subject: Re: oops upon driver unload
Date: Tue, 13 Mar 2012 16:27:21 +0100	[thread overview]
Message-ID: <4F5F6759.3030005@broadcom.com> (raw)
In-Reply-To: <20120313143916.GA2396@redhat.com>

On 03/13/2012 03:39 PM, Stanislaw Gruszka wrote:
> On Tue, Mar 13, 2012 at 01:52:16PM +0100, Arend van Spriel wrote:
>> During testing I got an OOPS with the brcmsmac (see attachment). I
>> suspect mac80211 is using a driver callback after the module is
>> removed (could be wrong here). The connection with the AP is
>> dropped, and after 1 sec. the driver is unloaded using rmmod, which
>> causes the driver to unregister from mac80211.
>>
>> Any clues?
> [snip]
>
>> Mar 12 02:52:36 lb-bun-09 kernel: [575889.112002] Call Trace:
>> Mar 12 02:52:36 lb-bun-09 kernel: [575889.112002]  [<c103f0ea>] ? run_timer_softirq+0x11a/0x2d0
> Those options are useful to debug such problems:
>
> CONFIG_DEBUG_OBJECTS=y
> CONFIG_DEBUG_OBJECTS_FREE=y
> CONFIG_DEBUG_OBJECTS_TIMERS=y
> CONFIG_DEBUG_OBJECTS_WORK=y
>
> Stanislaw
>

Thanks,

I will go and try that.

Gr. AvS


      reply	other threads:[~2012-03-13 15:34 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-13 12:52 oops upon driver unload Arend van Spriel
2012-03-13 13:00 ` Johannes Berg
2012-03-13 15:27   ` Arend van Spriel
2012-03-13 14:39 ` Stanislaw Gruszka
2012-03-13 15:27   ` Arend van Spriel [this message]

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