net/ipv6: fix metrics leak

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Since commit d4ead6b34b ("net/ipv6: move metrics from dst to
rt6_info"), ipv6 metrics are shared and refcounted. rt6_set_from()
assigns the rt->from pointer and increases the refcount on from's
metrics. This reference is never released.

Introduce the fib6_metrics_release() helper and use it to release the
metrics.

Fixes: d4ead6b34b ("net/ipv6: move metrics from dst to rt6_info")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Sabrina Dubroca 2018-07-30 16:23:10 +02:00 • committed by David S. Miller

parent 822fb18a82

commit df18b50448

1 changed files with 14 additions and 4 deletions

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net/ipv6/ip6_fib.c

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