[NET]: Fix infinite loop in dev_mc_unsync().
From: Joe Perches <joe@perches.com>
Based upon an initial patch and report by Luis R. Rodriguez.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/dev_mcast.c b/net/core/dev_mcast.c
index ae35405..647973d 100644
--- a/net/core/dev_mcast.c
+++ b/net/core/dev_mcast.c
@@ -168,13 +168,13 @@
da = from->mc_list;
while (da != NULL) {
next = da->next;
- if (!da->da_synced)
- continue;
- __dev_addr_delete(&to->mc_list, &to->mc_count,
- da->da_addr, da->da_addrlen, 0);
- da->da_synced = 0;
- __dev_addr_delete(&from->mc_list, &from->mc_count,
- da->da_addr, da->da_addrlen, 0);
+ if (da->da_synced) {
+ __dev_addr_delete(&to->mc_list, &to->mc_count,
+ da->da_addr, da->da_addrlen, 0);
+ da->da_synced = 0;
+ __dev_addr_delete(&from->mc_list, &from->mc_count,
+ da->da_addr, da->da_addrlen, 0);
+ }
da = next;
}
__dev_set_rx_mode(to);