Subject: [PATCH net-next v2] net: release reference to inet6_dev pointer

From: Patrick Rohr <[email-masked]>
Date: Fri, 18 Aug 2023 11:22:49 -0700

addrconf_prefix_rcv returned early without releasing the inet6_dev
pointer when the PIO lifetime is less than accept_ra_min_lft.

Fixes: 5027d54a9c30 ("net: change accept_ra_min_rtr_lft to affect all RA lifetimes")
Cc: Maciej Żenczykowski <[email-masked]>
Cc: Lorenzo Colitti <[email-masked]>
Cc: David Ahern <[email-masked]>
Cc: Simon Horman <[email-masked]>
Reviewed-by: Simon Horman <[email-masked]>
Reviewed-by: Maciej Żenczykowski <[email-masked]>
Signed-off-by: Patrick Rohr <[email-masked]>
---
 net/ipv6/addrconf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 5184bd0ceb12..47d1dd8501b7 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2742,7 +2742,7 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len, bool sllao)
 	}
 
 	if (valid_lft != 0 && valid_lft < in6_dev->cnf.accept_ra_min_lft)
-		return;
+		goto put;
 
 	/*
 	 *	Two things going on here:
-- 
2.42.0.rc1.204.g551eb34607-goog