Hi Anmol,
> AMP_MGR is getting derefernced in hci_phy_link_complete_evt(), when called from hci_event_packet() and there is a possibility, that hcon->amp_mgr may not be found when accessing after initialization of hcon.
>
> - net/bluetooth/hci_event.c:4945
> The bug seems to get triggered in this line:
>
> bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
>
> Fix it by adding a NULL check for the hcon->amp_mgr before checking the ev-status.
>
> Fixes: d5e911928bd8 ("Bluetooth: AMP: Process Physical Link Complete evt")
> Reported-and-tested-by: syzbot+0bef568258653cff272f@xxxxxxxxxxxxxxxxxxxxxxxxx
> Link: https://syzkaller.appspot.com/bug?extid=0bef568258653cff272f
> Signed-off-by: Anmol Karn <anmol.karan123@xxxxxxxxx>
> ---
> Change in v3:
> - changed return o; to return; (Reported-by: kernel test robot <lkp@xxxxxxxxx>
> )
>
> net/bluetooth/hci_event.c | 5 +++++
> 1 file changed, 5 insertions(+)
patch has been applied to bluetooth-next tree.
Regards
Marcel
