From: Johannes Berg <johannes@sipsolutions.net>
To: Bob Copeland <me@bobcopeland.com>
Cc: YanBo <dreamfly281@gmail.com>,
wireless <linux-wireless@vger.kernel.org>,
Luis Carlos Cobo <luisca@cozybit.com>
Subject: Re: [ath5k-devel] ath5k hang up in mesh mode
Date: Wed, 06 Aug 2008 16:00:18 +0200 [thread overview]
Message-ID: <1218031218.23048.4.camel@johannes.berg> (raw)
In-Reply-To: <b6c5339f0808060656v771a00dar51054236bc4ec50b@mail.gmail.com> (sfid-20080806_155653_719297_81EA5A80)
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> > [ 577.639420] Mesh plink with 00:19:e0:86:0f:2f ESTABLISHED
> > [ 602.864544] BUG: sleeping function called from invalid context at
> > mm/slab.c:3043
> > [ 602.869975] in_atomic():1, irqs_disabled():0
> > [ 602.874241] INFO: lockdep is turned off.
> > [ 602.878162] Pid: 5160, comm: ath5k_pci Not tainted
> > 2.6.27-rc1-wl-14922-gb73da91 #4
> > [ 602.885719] [<c0172e5f>] kmem_cache_alloc+0xef/0x110
> > [ 602.890794] [<c04e9908>] mesh_path_add+0xb8/0x2f0
> > [ 602.895610] [<c04e9908>] mesh_path_add+0xb8/0x2f0
> > [ 602.900468] [<c04eb8c6>] hwmp_route_info_get+0x406/0x4c0
> > [ 602.905886] [<c04eb4e5>] hwmp_route_info_get+0x25/0x4c0
> > [ 602.911927] [<c04eb9f4>] mesh_rx_path_sel_frame+0x74/0x870
> > [ 602.917257] [<c04d76dd>] ieee80211_rx_bss_info+0x67d/0xe80
> > [ 602.922846] [<c04d70dc>] ieee80211_rx_bss_info+0x7c/0xe80
> > [ 602.928353] [<c04d9d40>] ieee80211_rx_mgmt_action+0x180/0x8a0
>
> I guess mesh_path_add should be using GFP_ATOMIC instead of GFP_KERNEL, since
> it's called under rcu_read_lock? CCed Johannes.
Looks like it, but I don't really know. OTOH, we really could make all
that RX business non-atomic. Oh well, not now.
johannes
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next prev parent reply other threads:[~2008-08-06 14:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1197ff4c0808060056q7e10e39cl41a5ea5a26b7cdd6@mail.gmail.com>
2008-08-06 13:56 ` [ath5k-devel] ath5k hang up in mesh mode Bob Copeland
2008-08-06 14:00 ` Johannes Berg [this message]
2008-08-07 2:45 ` YanBo
2008-08-07 5:12 ` YanBo
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