tree 3a7344dd70fcc2425c315488368f5342a3fe3508
parent a9e2971b8cd3ef469de0112ba15778b5b98ad72e
author Steffen Klassert <steffen.klassert@secunet.com> 1507531183 +0200
committer David S. Miller <davem@davemloft.net> 1507567166 -0700

ipv6: Fix traffic triggered IPsec connections.

A recent patch removed the dst_free() on the allocated
dst_entry in ipv6_blackhole_route(). The dst_free() marked
the dst_entry as dead and added it to the gc list. I.e. it
was setup for a one time usage. As a result we may now have
a blackhole route cached at a socket on some IPsec scenarios.
This makes the connection unusable.

Fix this by marking the dst_entry directly at allocation time
as 'dead', so it is used only once.

Fixes: 587fea741134 ("ipv6: mark DST_NOGC and remove the operation of dst_free()")
Reported-by: Tobias Brunner <tobias@strongswan.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>