> OP-TEE has a reference of RPMB device it used. So, it can route
> frames through the device after rpmb_dev_unregister() is called.
> Therefore, the parent device passed to route_frames() can be
> already freed, for example, mmc_blk_remove_rpmb_part() drops the
> last reference after rpmb unregister.
>
> This patch clears the route_frames when the device is going to
> be removed by getting new rwsem and makes rpmb_route_frames()
> return -ENODEV if the device is gone.
>
> Fixes: 1e9046e3a154 ("rpmb: add Replay Protected Memory Block (RPMB)
> subsystem")
> Assisted-by: LLM
> Signed-off-by: Haruka Kuze <[email protected]>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review ยท
https://sashiko.dev/#/patchset/[email protected]?part=1
