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Bluetooth: 6lowpan: use after free in disconnect_devices()

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This was accidentally changed from list_for_each_entry_safe() to
list_for_each_entry() so now it has a use after free bug.  I've changed
it back.

Fixes: 9030582963 ('Bluetooth: 6lowpan: Converting rwlocks to use RCU')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Dan Carpenter 2014-10-29 19:10:57 +03:00 committed by Marcel Holtmann
parent 38130c31ef
commit daac197ca9
1 changed files with 2 additions and 2 deletions
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4
net/bluetooth/6lowpan.c
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@ -1383,7 +1383,7 @@ static const struct file_operations lowpan_control_fops = {
static void disconnect_devices(void)
{
struct lowpan_dev *entry, *new_dev;
struct lowpan_dev *entry, *tmp, *new_dev;
struct list_head devices;
INIT_LIST_HEAD(&devices);
@ -1408,7 +1408,7 @@ static void disconnect_devices(void)
rcu_read_unlock();
list_for_each_entry(entry, &devices, list) {
list_for_each_entry_safe(entry, tmp, &devices, list) {
ifdown(entry->netdev);
BT_DBG("Unregistering netdev %s %p",
entry->netdev->name, entry->netdev);