Re: [PATCH 1/1] ax25: Fix segfault after sock connection timeout

[David Miller]

From: Basil Gunn <basil@xxxxxxxxxxxxx>
Date: Sat, 14 Jan 2017 12:18:55 -0800

> The ax.25 socket connection timed out & the sock struct has been
> previously taken down ie. sock struct is now a NULL pointer. Checking
> the sock_flag causes the segfault.  Check if the socket struct pointer
> is NULL before checking sock_flag. This segfault is seen in
> timed out netrom connections.
> 
> Please submit to -stable.
> 
> Signed-off-by: Basil Gunn <basil@xxxxxxxxxxxxx>

This is consistent with the ax25->sk NULL check later in this function.

Applied and queued up for -stable, thanks.