net: ipmr: fix unresolved entry dumps

[ Upstream commit eddf016b910486d2123675a6b5fd7d64f77cdca8 ]

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@canonical.com>
Fixes: 8fb472c09b9d ("ipmr: improve hash scalability")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index cbd9c0d8a7880b1a3596f974cb82c9b3e3ea8f19..9f314a5e9f27e743f676508d0bd45a3518215508 100644 (file)
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -2499,8 +2499,6 @@ static int ipmr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb)
 next_entry:
                        e++;
                }
-               e = 0;
-               s_e = 0;
 
                spin_lock_bh(&mfc_unres_lock);
                list_for_each_entry(mfc, &mrt->mfc_unres_queue, list) {