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The shm cache could contain invalid addresses if optee_disable_shm_cache() was not called from the .shutdown hook of the previous kernel before a kexec. These addresses could be unmapped or they could point to mapped but unintended locations in memory. Clear the shared memory cache, while being careful to not translate the addresses returned from OPTEE_SMC_DISABLE_SHM_CACHE, during driver initialization. Once all pre-cache shm objects are removed, proceed with enabling the cache so that we know that we can handle cached shm objects with confidence later in the .shutdown hook. Cc: stable@vger.kernel.org Signed-off-by: Tyler Hicks <tyhicks@linux.microsoft.com> Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org> Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> |
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| .. | ||
| call.c | ||
| core.c | ||
| device.c | ||
| Kconfig | ||
| Makefile | ||
| optee_msg.h | ||
| optee_private.h | ||
| optee_rpc_cmd.h | ||
| optee_smc.h | ||
| optee_trace.h | ||
| rpc.c | ||
| shm_pool.c | ||
| shm_pool.h | ||
| supp.c | ||