From: Ram Malovany <ramm@ti.com>
Date: Thu, 19 Jul 2012 07:26:09 +0000 (+0300)
Subject: Bluetooth: Fix using NULL inquiry entry
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c810089c27e48b816181b454fcc493d19fdbc2ba;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

Bluetooth: Fix using NULL inquiry entry

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.

Cc: stable@vger.kernel.org
Signed-off-by: Ram Malovany <ramm@ti.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
---

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 248632cec11d..b64cfa213bd6 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1365,6 +1365,9 @@ 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;