netdev - [PATCH net] net: ipmr: fix unresolved entry dumps

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Date:   Wed, 17 Oct 2018 22:34:34 +0300
From:   Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net,
        Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
Subject: [PATCH net] net: ipmr: fix unresolved entry dumps

If the skb space ends in an unresolved entry while dumping we'll miss
some unresolved entries. The reason is due to zeroing the entry counter
between dumping resolved and unresolved mfc entries. We should just
keep counting until the whole table is dumped and zero when we move to
the next as we have a separate table counter.

Reported-by: Colin Ian King <colin.king@...onical.com>
Fixes: 8fb472c09b9d ("ipmr: improve hash scalability")
Signed-off-by: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
---
Dropped Yuval's mail because it bounces.

 net/ipv4/ipmr_base.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/net/ipv4/ipmr_base.c b/net/ipv4/ipmr_base.c
index 1ad9aa62a97b..eab8cd5ec2f5 100644
--- a/net/ipv4/ipmr_base.c
+++ b/net/ipv4/ipmr_base.c
@@ -296,8 +296,6 @@ int mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb,
 next_entry:
 			e++;
 		}
-		e = 0;
-		s_e = 0;
 
 		spin_lock_bh(lock);
 		list_for_each_entry(mfc, &mrt->mfc_unres_queue, list) {
-- 
2.17.2