From e2666f84958adb3a034b98e99699b55705117e01 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 30 Mar 2011 16:57:46 -0700 Subject: [PATCH] fib: add rtnl locking in ip_fib_net_exit Daniel J Blueman reported a lockdep splat in trie_firstleaf(), caused by RTNL being not locked before a call to fib_table_flush() Reported-by: Daniel J Blueman Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/fib_frontend.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index f116ce8f1b4..451088330bb 100644 --- a/net/ipv4/fib_frontend.c +++ b/net/ipv4/fib_frontend.c @@ -1068,6 +1068,7 @@ static void ip_fib_net_exit(struct net *net) fib4_rules_exit(net); #endif + rtnl_lock(); for (i = 0; i < FIB_TABLE_HASHSZ; i++) { struct fib_table *tb; struct hlist_head *head; @@ -1080,6 +1081,7 @@ static void ip_fib_net_exit(struct net *net) fib_free_table(tb); } } + rtnl_unlock(); kfree(net->ipv4.fib_table_hash); } -- 2.20.1