Merge remote-tracking branch 'airlied/drm-next' into drm-misc-next

Backmerge v4.9-rc8 to get at

commit e94bd1736f1f60e916a85a80c0b0ebeaae36cce5
Author: Michel Dänzer <michel.daenzer@amd.com>
Date:   Wed Nov 30 17:30:01 2016 +0900

drm: Don't call drm_for_each_crtc with a non-KMS driver

so I can apply Michel's follow-up patch.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

4 files changed, 29 insertions, 9 deletions

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 62bea4591054..602e5ebe9db3 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -322,14 +322,11 @@ static void netlink_skb_set_owner_r(struct sk_buff *skb, struct sock *sk)
 	sk_mem_charge(sk, skb->truesize);
 }
 
-static void netlink_sock_destruct(struct sock *sk)
+static void __netlink_sock_destruct(struct sock *sk)
 {
 	struct netlink_sock *nlk = nlk_sk(sk);
 
 	if (nlk->cb_running) {
-		if (nlk->cb.done)
-			nlk->cb.done(&nlk->cb);
-
 		module_put(nlk->cb.module);
 		kfree_skb(nlk->cb.skb);
 	}
@@ -346,6 +343,28 @@ static void netlink_sock_destruct(struct sock *sk)
 	WARN_ON(nlk_sk(sk)->groups);
 }
 
+static void netlink_sock_destruct_work(struct work_struct *work)
+{
+	struct netlink_sock *nlk = container_of(work, struct netlink_sock,
+						work);
+
+	nlk->cb.done(&nlk->cb);
+	__netlink_sock_destruct(&nlk->sk);
+}
+
+static void netlink_sock_destruct(struct sock *sk)
+{
+	struct netlink_sock *nlk = nlk_sk(sk);
+
+	if (nlk->cb_running && nlk->cb.done) {
+		INIT_WORK(&nlk->work, netlink_sock_destruct_work);
+		schedule_work(&nlk->work);
+		return;
+	}
+
+	__netlink_sock_destruct(sk);
+}
+
 /* This lock without WQ_FLAG_EXCLUSIVE is good on UP and it is _very_ bad on
  * SMP. Look, when several writers sleep and reader wakes them up, all but one
  * immediately hit write lock and grab all the cpus. Exclusive sleep solves
diff --git a/net/netlink/af_netlink.h b/net/netlink/af_netlink.h
index 3cfd6cc60504..4fdb38318977 100644
--- a/net/netlink/af_netlink.h
+++ b/net/netlink/af_netlink.h
@@ -3,6 +3,7 @@
 
 #include <linux/rhashtable.h>
 #include <linux/atomic.h>
+#include <linux/workqueue.h>
 #include <net/sock.h>
 
 #define NLGRPSZ(x)	(ALIGN(x, sizeof(unsigned long) * 8) / 8)
@@ -33,6 +34,7 @@ struct netlink_sock {
 
 	struct rhash_head	node;
 	struct rcu_head		rcu;
+	struct work_struct	work;
 };
 
 static inline struct netlink_sock *nlk_sk(struct sock *sk)
diff --git a/net/netlink/diag.c b/net/netlink/diag.c
index b2f0e986a6f4..a5546249fb10 100644
--- a/net/netlink/diag.c
+++ b/net/netlink/diag.c
@@ -178,11 +178,8 @@ static int netlink_diag_dump(struct sk_buff *skb, struct netlink_callback *cb)
 		}
 		cb->args[1] = i;
 	} else {
-		if (req->sdiag_protocol >= MAX_LINKS) {
-			read_unlock(&nl_table_lock);
-			rcu_read_unlock();
+		if (req->sdiag_protocol >= MAX_LINKS)
 			return -ENOENT;
-		}
 
 		err = __netlink_diag_dump(skb, cb, req->sdiag_protocol, s_num);
 	}
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index 23cc12639ba7..49c28e8ef01b 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -404,7 +404,7 @@ int __genl_register_family(struct genl_family *family)
 
 	err = genl_validate_assign_mc_groups(family);
 	if (err)
-		goto errout_locked;
+		goto errout_free;
 
 	list_add_tail(&family->family_list, genl_family_chain(family->id));
 	genl_unlock_all();
@@ -417,6 +417,8 @@ int __genl_register_family(struct genl_family *family)
 
 	return 0;
 
+errout_free:
+	kfree(family->attrbuf);
 errout_locked:
 	genl_unlock_all();
 errout: