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net: partially revert dynamic lockdep key changes

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This patch reverts the folowing commits:

commit 064ff66e2b
"bonding: add missing netdev_update_lockdep_key()"

commit 53d374979e
"net: avoid updating qdisc_xmit_lock_key in netdev_update_lockdep_key()"

commit 1f26c0d3d2
"net: fix kernel-doc warning in <linux/netdevice.h>"

commit ab92d68fc2
"net: core: add generic lockdep keys"

but keeps the addr_list_lock_key because we still lock
addr_list_lock nestedly on stack devices, unlikely xmit_lock
this is safe because we don't take addr_list_lock on any fast
path.

Reported-and-tested-by: syzbot+aaa6fa4949cc5d9b7b25@syzkaller.appspotmail.com
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cong Wang
2020-05-02 22:22:19 -07:00
committed by David S. Miller
parent ea84c84290
commit 1a33e10e4a
22 changed files with 294 additions and 33 deletions
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22
drivers/net/wireless/intersil/hostap/hostap_hw.c
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@@ -3041,6 +3041,27 @@ static void prism2_clear_set_tim_queue(local_info_t *local)
}
}
/*
* HostAP uses two layers of net devices, where the inner
* layer gets called all the time from the outer layer.
* This is a natural nesting, which needs a split lock type.
*/
static struct lock_class_key hostap_netdev_xmit_lock_key;
static void prism2_set_lockdep_class_one(struct net_device *dev,
struct netdev_queue *txq,
void *_unused)
{
lockdep_set_class(&txq->_xmit_lock,
&hostap_netdev_xmit_lock_key);
}
static void prism2_set_lockdep_class(struct net_device *dev)
{
netdev_for_each_tx_queue(dev, prism2_set_lockdep_class_one, NULL);
}
static struct net_device *
prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx,
struct device *sdev)
@@ -3199,6 +3220,7 @@ while (0)
if (ret >= 0)
ret = register_netdevice(dev);
prism2_set_lockdep_class(dev);
rtnl_unlock();
if (ret < 0) {
printk(KERN_WARNING "%s: register netdevice failed!\n",