From: Johannes Berg <johannes@sipsolutions.net>
To: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Cc: linux-wireless@vger.kernel.org
Subject: Re: OOPS at ieee80211_aes_ccm_encrypt()?
Date: Mon, 03 Jan 2011 19:16:14 +0100 [thread overview]
Message-ID: <1294078574.3436.5.camel@jlt3.sipsolutions.net> (raw)
In-Reply-To: <20110103201138.146879onsq0vcqqg@hayate.sektori.org>
On Mon, 2011-01-03 at 20:11 +0200, Jussi Kivilinna wrote:
> Quoting Johannes Berg <johannes@sipsolutions.net>:
>
> >
> > It looks like it. Can you reproduce this fairly easily? I wonder if it's
> > an RCU problem, we do key lookups under RCU but I see no grace period
> > right now ... try the patch below, I'll look into it in more detail.
> >
>
> I have been running tests past two weeks and this came up once. I have
> been running hostapd with wpa_group_rekey=30 and wpa_ptk_rekey=60 and
> doing 'nc < /dev/zero > /dev/null' at both ends and 'ping -f'. When
> this crash happened other end was rndis_wlan. I'll try reproducing,
> but doubt it will.
Alright, thanks. In the meantime, I dug through the code and history and
saw that there was a synchronize_rcu that I accidentally removed, so
I'll just send out the patch with more commentary.
johannes
prev parent reply other threads:[~2011-01-03 18:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-02 22:10 OOPS at ieee80211_aes_ccm_encrypt()? Jussi Kivilinna
2011-01-03 16:46 ` Johannes Berg
2011-01-03 18:11 ` Jussi Kivilinna
2011-01-03 18:16 ` Johannes Berg [this message]
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