From: Felix Fietkau <nbd@openwrt.org>
To: Sven Eckelmann <sven@open-mesh.com>, b.a.t.m.a.n@lists.open-mesh.org
Cc: openwrt-devel@lists.openwrt.org,
Marek Lindner <mareklindner@neomailbox.ch>
Subject: Re: [B.A.T.M.A.N.] OpenWrt cfg80211.h station_info incompatibility with kernel+mac80211 [was: B.A.T.M.A.N. V leaves the nest v2]
Date: Thu, 21 Jan 2016 14:55:01 +0100 [thread overview]
Message-ID: <56A0E335.8040207@openwrt.org> (raw)
In-Reply-To: <4178376.2Vigxs1Xtt@bentobox>
On 2016-01-21 14:47, Sven Eckelmann wrote:
> On Thursday 21 January 2016 12:56:01 Sven Eckelmann wrote:
>> Just installed in on some hardware (2x OM5P + OpenWrt 44654 + compat-wireless
>> 2015-10-26) and enabled BATMAN_V.
>>
>> [ 168.540000] CPU 0 Unable to handle kernel paging request at virtual address fffffff0, epc == 86d8301c, ra == 86d8301c
>> [ 168.550000] Oops[#1]:
>> [ 168.550000] CPU: 0 PID: 265 Comm: kworker/u2:2 Tainted: P 3.18.8 #1
>> [ 168.550000] Workqueue: bat_events batadv_v_elp_throughput_metric_update [batman_adv]
> [..]
>> [ 168.550000] epc : 86d8301c batadv_v_elp_throughput_metric_update+0x20/0x58 [batman_adv]
>> [ 168.550000] Tainted: P
>> [ 168.550000] ra : 86d8301c batadv_v_elp_throughput_metric_update+0x20/0x58 [batman_adv]
>
> Who knew that struct station_info changed in v3.18-6219-g6de3980,
> v3.18-6235-gb51f3be and v3.18-6217-ga76b194? Wieder keiner!? :)
>
> So what basically happened was a stack corruption causing the return address
> to be bogus. This only happened because the kernel version of cfg80211.h (which
> is used to compile batman-adv) is different than the version in the mac80211
> package (which is used at runtime) I have now synced that structure between the
> OpenWrt kernel and the used compat-wireless, rebuild my OpenWrt and tried again.
> I hope this helps anyone trying to use B.A.T.M.A.N. V on OpenWrt.
>
> @Felix, would it be ok for you when I propose a
> "*-sync-cfg80211-station_info.patch" for the 3.18 generic kernel patches?
> Or do you have a good idea how to force the openwrt-routing batman-adv package
> against the cfg80211.h of compat-wireless?
The openwrt mac80211 package exports its headers to
$(STAGING_DIR)/usr/include/mac80211
You could just make the batman-adv package use those includes.
- Felix
next prev parent reply other threads:[~2016-01-21 13:55 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-16 8:39 [B.A.T.M.A.N.] B.A.T.M.A.N. V leaves the nest v2 Marek Lindner
2016-01-16 8:40 ` [B.A.T.M.A.N.] [PATCH v2 01/12] batman-adv: Add hard_iface specific sysfs wrapper macros for UINT Marek Lindner
2016-01-19 15:08 ` Marek Lindner
2016-01-16 8:40 ` [B.A.T.M.A.N.] [PATCH v2 02/12] batman-adv: ELP - adding basic infrastructure Marek Lindner
2016-01-19 15:10 ` Marek Lindner
2016-01-16 8:40 ` [B.A.T.M.A.N.] [PATCH v2 03/12] batman-adv: ELP - creating neighbor structures Marek Lindner
2016-01-19 15:11 ` Marek Lindner
2016-01-16 8:40 ` [B.A.T.M.A.N.] [PATCH v2 04/12] batman-adv: ELP - adding sysfs parameter for elp interval Marek Lindner
2016-01-19 15:12 ` Marek Lindner
2016-01-16 8:40 ` [B.A.T.M.A.N.] [PATCH v2 05/12] batman-adv: OGMv2 - add basic infrastructure Marek Lindner
2016-01-19 15:14 ` Marek Lindner
2016-01-16 8:40 ` [B.A.T.M.A.N.] [PATCH v2 06/12] batman-adv: OGMv2 - implement originators logic Marek Lindner
2016-01-19 15:15 ` Marek Lindner
2016-01-16 8:40 ` [B.A.T.M.A.N.] [PATCH v2 07/12] batman-adv: add throughput override attribute to hard_ifaces Marek Lindner
2016-01-19 15:16 ` Marek Lindner
2016-01-16 8:40 ` [B.A.T.M.A.N.] [PATCH v2 08/12] batman-adv: keep track of when unicast packets are sent Marek Lindner
2016-01-19 15:20 ` Marek Lindner
2016-01-16 8:40 ` [B.A.T.M.A.N.] [PATCH v2 09/12] batman-adv: ELP - compute the metric based on the estimated throughput Marek Lindner
2016-01-19 15:22 ` Marek Lindner
2016-01-16 8:40 ` [B.A.T.M.A.N.] [PATCH v2 10/12] batman-adv: B.A.T.M.A.N. V - implement neighbor comparison API calls Marek Lindner
2016-01-19 15:24 ` Marek Lindner
2016-01-16 8:40 ` [B.A.T.M.A.N.] [PATCH v2 11/12] batman-adv: B.A.T.M.A.N. V - implement bat_orig_print API Marek Lindner
2016-01-19 15:25 ` Marek Lindner
2016-01-16 8:40 ` [B.A.T.M.A.N.] [PATCH v2 12/12] batman-adv: B.A.T.M.A.N. V - implement bat_neigh_print API Marek Lindner
2016-01-19 15:26 ` Marek Lindner
2016-01-21 11:56 ` [B.A.T.M.A.N.] B.A.T.M.A.N. V leaves the nest v2 Sven Eckelmann
2016-01-21 13:47 ` [B.A.T.M.A.N.] OpenWrt cfg80211.h station_info incompatibility with kernel+mac80211 [was: B.A.T.M.A.N. V leaves the nest v2] Sven Eckelmann
2016-01-21 13:55 ` Felix Fietkau [this message]
2016-01-21 14:03 ` Sven Eckelmann
2016-01-21 14:02 ` Antonio Quartulli
2016-01-21 14:34 ` Sven Eckelmann
2016-01-21 14:26 ` Sven Eckelmann
2016-01-21 14:47 ` Felix Fietkau
2016-01-21 15:16 ` Sven Eckelmann
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