On Mon, Feb 21, 2022 at 11:48:59PM +0100, Jens Wiklander wrote:
commit aceeafefff736057e8f93f19bbfbef26abd94604 upstream
Adds a driver private tee_context to struct optee.
The new driver internal tee_context is used when allocating driver private shared memory. This decouples the shared memory object from its original tee_context. This is needed when the life time of such a memory allocation outlives the client tee_context.
This fixes a problem where the tee_context allocated on behalf of a process outlives the process because some longer lived driver internal shared memory has been allocated using that tee_context.
Fixes: 217e0250cccb ("tee: use reference counting for tee_context") Reported-by: Lars Persson larper@axis.com Cc: stable@vger.kernel.org # 1e2c3ef0496e tee: export teedev_open() and teedev_close_context() Cc: stable@vger.kernel.org Reviewed-by: Sumit Garg sumit.garg@linaro.org [JW: backport to 5.4-stable + update commit message] Signed-off-by: Jens Wiklander jens.wiklander@linaro.org
Hi,
This is an update to the previous patch posted with the same name.
What changed in v2?