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sock: tigthen lockdep checks for sock_owned_by_user

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sock_owned_by_user should not be used without socket lock held. It seems
to be a common practice to check .owned before lock reclassification, so
provide a little help to abstract this check away.

Cc: linux-cifs@vger.kernel.org
Cc: linux-bluetooth@vger.kernel.org
Cc: linux-nfs@vger.kernel.org
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hannes Frederic Sowa
2016-04-08 15:11:27 +02:00
committed by David S. Miller
parent 18b46810eb
commit fafc4e1ea1
6 changed files with 35 additions and 23 deletions
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2
net/bluetooth/af_bluetooth.c
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@@ -65,7 +65,7 @@ static const char *const bt_slock_key_strings[BT_MAX_PROTO] = {
void bt_sock_reclassify_lock(struct sock *sk, int proto)
{
BUG_ON(!sk);
BUG_ON(sock_owned_by_user(sk));
BUG_ON(!sock_allow_reclassification(sk));
sock_lock_init_class_and_name(sk,
bt_slock_key_strings[proto], &bt_slock_key[proto],