On 02/02/2024 07:18, Frank Li wrote: > ... > cdns3_gadget_ep_free_request(&priv_ep->endpoint, &priv_req->request); > list_del_init(&priv_req->list); > ... > > 'priv_req' actually free at cdns3_gadget_ep_free_request(). But > list_del_init() use priv_req->list after it. > > [ 1542.642868][ T534] BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xd4 > [ 1542.642868][ T534] > [ 1542.653162][ T534] Use-after-free read at 0x000000009ed0ba99 (in kfence-#3): > [ 1542.660311][ T534] __list_del_entry_valid+0x10/0xd4 > [ 1542.665375][ T534] cdns3_gadget_ep_disable+0x1f8/0x388 [cdns3] > [ 1542.671571][ T534] usb_ep_disable+0x44/0xe4 > [ 1542.675948][ T534] ffs_func_eps_disable+0x64/0xc8 > [ 1542.680839][ T534] ffs_func_set_alt+0x74/0x368 > [ 1542.685478][ T534] ffs_func_disable+0x18/0x28 > > Move list_del_init() before cdns3_gadget_ep_free_request() to resolve this > problem. > > Cc: <stable@xxxxxxxxxxxxxxx> > Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver") > Signed-off-by: Frank Li <Frank.Li@xxxxxxx> Reviewed-by: Roger Quadros <rogerq@xxxxxxxxxx>