linux-kernel - [PATCH 0/2] optee: fix OOM seen due to tee_shm

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Message-Id: <1613671958-1307-1-git-send-email-dphadke@linux.microsoft.com>
Date:   Thu, 18 Feb 2021 10:12:38 -0800
From:   Dhananjay Phadke <dphadke@...ux.microsoft.com>
To:     allen.lkml@...il.com
Cc:     apais@...ux.microsoft.com, jens.wiklander@...aro.org,
        linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org,
        op-tee@...ts.trustedfirmware.org, zajec5@...il.com,
        linux-arm-kernel@...ts.infradead.org,
        bcm-kernel-feedback-list@...adcom.com
Subject: [PATCH 0/2] optee: fix OOM seen due to tee_shm_free()

From: Allen Pais <apais@...ux.microsoft.com>

On Wed, 17 Feb 2021 14:57:12 +0530, Allen Pais wrote:
> 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() in optee core as well as bnxt firmware driver
> to handle the release of the buffers correctly.
>     
> More info:
> https://github.com/OP-TEE/optee_os/issues/3637

CC: linux-kernel@...r.kernel.org instead of linux-mips?
TEE / TrustZone is ARM.

Also, for Broadcom specific -
CC: bcm-kernel-feedback-list@...adcom.com