Re: [PATCH v2 1/2] optee: fix tee out of memory failure seen during kexec reboot

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[ 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

drivers/tee/optee/core.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)

This looks good to me. Do you have a practical way of testing this on QEMU for instance?

Jens,

I could not reproduce nor create a setup using QEMU, I could only

do it on a real h/w.

I have extensively tested the fix and I don't see any issues.

I did a few test runs too, seems OK.

Thank you very much.