Re: [PATCH net] sctp: avoid BUG_ON on sctp_wait_for_sndbuf

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From: Marcelo Ricardo Leitner <marcelo.leitner@xxxxxxxxx>
Date: Mon,  6 Feb 2017 18:10:31 -0200

> Alexander Popov reported that an application may trigger a BUG_ON in
> sctp_wait_for_sndbuf if the socket tx buffer is full, a thread is
> waiting on it to queue more data and meanwhile another thread peels off
> the association being used by the first thread.
> 
> This patch replaces the BUG_ON call with a proper error handling. It
> will return -EPIPE to the original sendmsg call, similarly to what would
> have been done if the association wasn't found in the first place.
> 
> Acked-by: Alexander Popov <alex.popov@xxxxxxxxx>
> Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@xxxxxxxxx>
> ---
> Please consider this to -stable. Thanks

Applied and queued up for -stable, thanks a lot.
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