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Date:   Wed, 22 Mar 2017 11:59:59 -0700 (PDT)
From:   David Miller <>
Subject: Re: [PATCH net v1 1/1] tipc: fix nametbl deadlock at

From: Parthasarathy Bhuvaragan <>
Date: Tue, 21 Mar 2017 10:47:49 +0100

> From: Ying Xue <>
> Until now, tipc_nametbl_unsubscribe() is called at subscriptions
> reference count cleanup. Usually the subscriptions cleanup is
> called at subscription timeout or at subscription cancel or at
> subscriber delete.
> We have ignored the possibility of this being called from other
> locations, which causes deadlock as we try to grab the
> tn->nametbl_lock while holding it already.
> In this commit, we advance the calling of tipc_nametbl_unsubscribe()
> from the refcount cleanup to the intended callers.
> Fixes: d094c4d5f5c7 ("tipc: add subscription refcount to avoid invalid delete")
> Reported-by: John Thompson <>
> Acked-by: Jon Maloy <>
> Signed-off-by: Ying Xue <>
> Signed-off-by: Parthasarathy Bhuvaragan <>

Applied, thank you.

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