From: Steffen Klassert Date: Mon, 9 Oct 2017 06:43:55 +0000 (+0200) Subject: ipv4: Fix traffic triggered IPsec connections. X-Git-Tag: v4.14-rc5~40^2~8 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6c0e7284d89995877740d8a26c3e99a937312a3c;p=platform%2Fkernel%2Flinux-rpi3.git ipv4: Fix traffic triggered IPsec connections. A recent patch removed the dst_free() on the allocated dst_entry in ipv4_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: b838d5e1c5b6 ("ipv4: mark DST_NOGC and remove the operation of dst_free()") Reported-by: Tobias Brunner Signed-off-by: Steffen Klassert Signed-off-by: David S. Miller --- diff --git a/net/ipv4/route.c b/net/ipv4/route.c index ac6fde5..3d9f1c2 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -2513,7 +2513,7 @@ struct dst_entry *ipv4_blackhole_route(struct net *net, struct dst_entry *dst_or struct rtable *ort = (struct rtable *) dst_orig; struct rtable *rt; - rt = dst_alloc(&ipv4_dst_blackhole_ops, NULL, 1, DST_OBSOLETE_NONE, 0); + rt = dst_alloc(&ipv4_dst_blackhole_ops, NULL, 1, DST_OBSOLETE_DEAD, 0); if (rt) { struct dst_entry *new = &rt->dst;