From: Sven Eckelmann <sven@narfation.org>
To: mareklindner@neomailbox.ch, sw@simonwunderlich.de, a@unstable.cc,
davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, b.a.t.m.a.n@lists.open-mesh.org,
Xingyu Li <xli399@ucr.edu>
Subject: Re: BUG: general protection fault in batadv_bla_del_backbone_claims
Date: Sun, 25 Aug 2024 18:23:54 +0200 [thread overview]
Message-ID: <13617673.uLZWGnKmhe@bentobox> (raw)
In-Reply-To: <CALAgD-7C3t=vRTvpnVvsZ_1YhgiiynDaX_ud0O6pxSBn3suADQ@mail.gmail.com>
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On Sunday, 25 August 2024 06:14:48 CEST Xingyu Li wrote:
> In line 307 of net/batman-adv/bridge_loop_avoidance, when executing
> "hash = backbone_gw->bat_priv->bla.claim_hash;", it does not check if
> "backbone_gw->bat_priv==NULL".
Because it cannot be NULL unless something really, really, really bad
happened. bat_priv will only be set when the gateway gets created using
batadv_bla_get_backbone_gw(). It never gets unset during the lifetime on the
backbone gateway.
Maybe Simon has more to say about that.
On Sunday, 25 August 2024 06:14:48 CEST Xingyu Li wrote:
> RIP: 0010:batadv_bla_del_backbone_claims+0x4e/0x360
Which line would that be in your build?
On Sunday, 25 August 2024 06:14:48 CEST Xingyu Li wrote:
> Syzkaller reproducer:
At the moment, I am unable to reproduce this crash with the provided
reproducer.
Can you reproduce it with it? If you can, did you try to perform a bisect
using the reproducer?
Kind regards,
Sven
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next prev parent reply other threads:[~2024-08-25 16:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-25 4:14 BUG: general protection fault in batadv_bla_del_backbone_claims Xingyu Li
2024-08-25 16:23 ` Sven Eckelmann [this message]
2024-08-29 4:30 ` Xingyu Li
2024-08-29 6:27 ` Sven Eckelmann
-- strict thread matches above, loose matches on Subject: below --
2024-08-24 2:10 Xingyu Li
2024-08-29 4:41 ` Xingyu Li
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