From: Sven Eckelmann <sven@narfation.org>
To: b.a.t.m.a.n@lists.open-mesh.org
Subject: Re: [B.A.T.M.A.N.] Invalid memory access during if add/del with multiple interfaces
Date: Sun, 29 Nov 2015 02:17:59 +0100 [thread overview]
Message-ID: <1696819.DY2yIRgCKv@sven-edge> (raw)
In-Reply-To: <29580650.TaMGDDyOBU@sven-edge>
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On Sunday 29 November 2015 01:37:21 Sven Eckelmann wrote:
> [...]
>
> ==================================================================
> BUG: KASAN: slab-out-of-bounds in
> batadv_iv_ogm_slide_own_bcast_window+0x298/0x376 [batman_adv] at addr fff
>
> Write of size 1 by task kworker/u4:2/67
The reads seem to be solved by the patch [1] which I've sent to the mailing
list. But this write looks more interesting. The problem seems to be the
missing locking for if_num + bat_iv.bcast_own/bat_iv.bcast_own_sum (with
bat_iv.ogm_cnt_lock ?) in (or around)
batadv_orig_hash_add_if/batadv_orig_hash_del_if.
And I don't know right now what causes the GPF but it can be reproduced (just
takes some time until it happens).
Kind regards,
Sven
[1] https://lists.open-mesh.org/pipermail/b.a.t.m.a.n/2015-November/013836.html
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prev parent reply other threads:[~2015-11-29 1:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-29 0:37 [B.A.T.M.A.N.] Invalid memory access during if add/del with multiple interfaces Sven Eckelmann
2015-11-29 1:17 ` Sven Eckelmann [this message]
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