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Date:   Tue, 26 Mar 2019 11:21:58 -0700 (PDT)
From:   David Miller <>
Subject: Re: [PATCH net] tipc: change to check tipc_own_id to return in

From: Xin Long <>
Date: Sun, 24 Mar 2019 00:48:22 +0800

> When running a syz script, a panic occurred:
> It was caused by the netns freed without deleting the discoverer timer,
> while later on the netns would be accessed in the timer handler.
> The timer should have been deleted by tipc_net_stop() when cleaning up a
> netns. However, tipc has been able to enable a bearer and start d->timer
> without the local node_addr set since Commit 52dfae5c85a4 ("tipc: obtain
> node identity from interface by default"), which caused the timer not to
> be deleted in tipc_net_stop() then.
> So fix it in tipc_net_stop() by changing to check local node_id instead
> of local node_addr, as Jon suggested.
> While at it, remove the calling of tipc_nametbl_withdraw() there, since
> tipc_nametbl_stop() will take of the nametbl's freeing after.
> Fixes: 52dfae5c85a4 ("tipc: obtain node identity from interface by default")
> Reported-by:
> Signed-off-by: Xin Long <>

Applied and queued up for -stable, anks Xin!

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