[PATCH:xserver] Avoid segfault in CloseWellKnownConnections when using -displayfd

Keith Packard keithp at keithp.com
Fri Jan 1 23:42:41 PST 2016

Alan Coopersmith <alan.coopersmith at oracle.com> writes:

> When -displayfd is looping through the possible display ids to use,
> if it can't open all the listening sockets for one (say when :0 is
> already in use), it calls CloseWellKnownConnections to close all
> the ListenTransConns entries before the point that ListenTransFds
> was allocated & initialized, so CloseWellKnownConnections would
> segfault trying to read entries from a NULL ListenTransFds pointer.
> Introduced by commit 7b02f0b8
> Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>

Reviewed-by: Keith Packard <keithp at keithp.com>

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