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Date: Wed, 29 Oct 2014 19:10:57 +0300 From: Dan Carpenter <dan.carpenter@...cle.com> To: Marcel Holtmann <marcel@...tmann.org> Cc: Gustavo Padovan <gustavo@...ovan.org>, Johan Hedberg <johan.hedberg@...il.com>, "David S. Miller" <davem@...emloft.net>, linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org Subject: [patch] Bluetooth: 6lowpan: use after free in disconnect_devices() 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: 90305829635d ('Bluetooth: 6lowpan: Converting rwlocks to use RCU') Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com> diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c index 7254bdd..eef298d 100644 --- a/net/bluetooth/6lowpan.c +++ b/net/bluetooth/6lowpan.c @@ -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); -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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