net: ipmr: fix static mfc/dev leaks on table destruction

[cascardo/linux.git] / net / ipv4 / fib_semantics.c

diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 3e87447..d97268e 100644 (file)
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -923,14 +923,21 @@ static bool fib_valid_prefsrc(struct fib_config *cfg, __be32 fib_prefsrc)
        if (cfg->fc_type != RTN_LOCAL || !cfg->fc_dst ||
            fib_prefsrc != cfg->fc_dst) {
                u32 tb_id = cfg->fc_table;
+               int rc;
 
                if (tb_id == RT_TABLE_MAIN)
                        tb_id = RT_TABLE_LOCAL;
 
-               if (inet_addr_type_table(cfg->fc_nlinfo.nl_net,
-                                        fib_prefsrc, tb_id) != RTN_LOCAL) {
-                       return false;
+               rc = inet_addr_type_table(cfg->fc_nlinfo.nl_net,
+                                         fib_prefsrc, tb_id);
+
+               if (rc != RTN_LOCAL && tb_id != RT_TABLE_LOCAL) {
+                       rc = inet_addr_type_table(cfg->fc_nlinfo.nl_net,
+                                                 fib_prefsrc, RT_TABLE_LOCAL);
                }
+
+               if (rc != RTN_LOCAL)
+                       return false;
        }
        return true;
 }