Re: [PATCH] tcp: fix inet_twsk_deschedule()

[David Miller]

From: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Date: Sat, 19 Feb 2011 09:35:56 +0100

> [PATCH] tcp: fix inet_twsk_deschedule()
> 
> Eric W. Biederman reported a lockdep splat in inet_twsk_deschedule()
> 
> This is caused by inet_twsk_purge(), run from process context,
> and commit 575f4cd5a5b6394577 (net: Use rcu lookups in inet_twsk_purge.)
> removed the BH disabling that was necessary.
> 
> Add the BH disabling but fine grained, right before calling
> inet_twsk_deschedule(), instead of whole function.
> 
> With help from Linus Torvalds and Eric W. Biederman
> 
> Reported-by: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
> Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>
> CC: Daniel Lezcano <daniel.lezcano@xxxxxxx>
> CC: Pavel Emelyanov <xemul@xxxxxxxxxx>
> CC: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
> CC: stable <stable@xxxxxxxxxx> (# 2.6.33+)

Applied, thanks Eric.
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