#syz test

---
  net/bluetooth/mgmt.c | 16 +++++++++++++---
  1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index b31192d473d0..bbc86b7dce07 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -5519,8 +5519,12 @@ static void 
mgmt_remove_adv_monitor_complete(struct hci_dev *hdev,
  {
  	struct mgmt_rp_remove_adv_monitor rp;
  	struct mgmt_pending_cmd *cmd = data;
-	struct mgmt_cp_remove_adv_monitor *cp = cmd->param;
+	struct mgmt_cp_remove_adv_monitor *cp;
+
+	if (cmd != pending_find(MGMT_OP_REMOVE_ADV_MONITOR, hdev))
+		return -ECANCELED;

+	cp = cmd->param;
  	hci_dev_lock(hdev);

  	rp.monitor_handle = cp->monitor_handle;
@@ -5540,8 +5544,14 @@ static void 
mgmt_remove_adv_monitor_complete(struct hci_dev *hdev,
  static int mgmt_remove_adv_monitor_sync(struct hci_dev *hdev, void *data)
  {
  	struct mgmt_pending_cmd *cmd = data;
-	struct mgmt_cp_remove_adv_monitor *cp = cmd->param;
-	u16 handle = __le16_to_cpu(cp->monitor_handle);
+	struct mgmt_cp_remove_adv_monitor *cp;
+	u16 handle;
+
+	if (cmd != pending_find(MGMT_OP_REMOVE_ADV_MONITOR, hdev))
+		return -ECANCELED;
+
+	cp = cmd->param;
+	handle = __le16_to_cpu(cp->monitor_handle);

  	if (!handle)
  		return hci_remove_all_adv_monitor(hdev);
-- 
2.34.1

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

failed to apply patch:
checking file net/bluetooth/mgmt.c
patch: **** unexpected end of file in patch



Tested on:

commit:         4615855e Merge branch '100GbE' of git://git.kernel.org..
git tree:       net
kernel config:  https://syzkaller.appspot.com/x/.config?x=3891b550f14aea0f
dashboard link: https://syzkaller.appspot.com/bug?extid=479aff51bb361ef5aa18
compiler:       
patch:          https://syzkaller.appspot.com/x/patch.diff?x=10b88020580000