Bluetooth: Fix using NULL inquiry entry

commit c810089c27e48b816181b454fcc493d19fdbc2ba upstream.

If entry wasn't found in the hci_inquiry_cache_lookup_resolve do not
resolve the name.This will fix a kernel crash when trying to use NULL
pointer.

Signed-off-by: Ram Malovany <ramm@ti.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 1266f78fa8e3283a6d854d1b808312b8916c981f..866fc3b22fba0087a28fe96247c8c0e874f388df 100644 (file)
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1357,6 +1357,9 @@ static bool hci_resolve_next_name(struct hci_dev *hdev)
                return false;
 
        e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
+       if (!e)
+               return false;
+
        if (hci_resolve_name(hdev, e) == 0) {
                e->name_state = NAME_PENDING;
                return true;