Commit cff6a327 authored Aug 01, 2019 by David Ahern Committed by David S. Miller Aug 05, 2019

ipv6: Fix unbalanced rcu locking in rt6_update_exception_stamp_rt



The nexthop path in rt6_update_exception_stamp_rt needs to call
rcu_read_unlock if it fails to find a fib6_nh match rather than
just returning.

Fixes: e659ba31 ("ipv6: Handle all fib6_nh in a nexthop in exception handling")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent cd114d2e

net/ipv6/route.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1951,7 +1951,7 @@ static void rt6_update_exception_stamp_rt(struct rt6_info *rt)
		nexthop_for_each_fib6_nh(from->nh, fib6_nh_find_match, &arg);

		if (!arg.match)
		return;
		goto unlock;
		fib6_nh = arg.match;
		} else {
		fib6_nh = from->fib6_nh;

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