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ipv6: Fix unbalanced rcu locking in rt6_update_exception_stamp_rt

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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: e659ba31d8 ("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>
This commit is contained in:
David Ahern 2019-08-01 14:36:35 -07:00 committed by David S. Miller
parent cd114d2e81
commit cff6a327d7
1 changed files with 1 additions and 1 deletions
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2
net/ipv6/route.c
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@ -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;