Re: [PATCH v4 3/8] optee: fix tee out of memory failure seen during kexec reboot

On Thu, Jun 10, 2021 at 11:09 PM Tyler Hicks tyhicks@linux.microsoft.com wrote:

From: Allen Pais apais@linux.microsoft.com

The following out of memory errors are seen on kexec reboot from the optee core.

[ 0.368428] tee_bnxt_fw optee-clnt0: tee_shm_alloc failed [ 0.368461] tee_bnxt_fw: probe of optee-clnt0 failed with error -22

tee_shm_release() is not invoked on dma shm buffer.

Implement .shutdown() method to handle the release of the buffers correctly.

More info: https://github.com/OP-TEE/optee_os/issues/3637

Signed-off-by: Allen Pais apais@linux.microsoft.com Reviewed-by: Tyler Hicks tyhicks@linux.microsoft.com

Do we really need this considering the patch "optee: Refuse to load the driver under the kdump kernel"?

Jens