Tyler Hicks 5e9d820214 optee: Clear stale cache entries during initialization ... commit b5c10dd04b upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-08-12 13:22:13 +02:00
..
call.c	optee: Clear stale cache entries during initialization	2021-08-12 13:22:13 +02:00
core.c	optee: Clear stale cache entries during initialization	2021-08-12 13:22:13 +02:00
device.c	optee: enable support for multi-stage bus enumeration	2020-07-10 09:41:53 +02:00
Kconfig	tee: optee: Fix compilation issue with nommu	2020-01-23 10:55:20 +01:00
Makefile
optee_msg.h	optee: use export_uuid() to copy client UUID	2021-06-10 13:39:21 +02:00
optee_private.h	optee: Clear stale cache entries during initialization	2021-08-12 13:22:13 +02:00
optee_smc.h	driver: tee: Handle NULL pointer indication from client	2020-08-21 08:55:13 +02:00
rpc.c	optee: simplify i2c access	2021-03-04 11:37:28 +01:00
shm_pool.c	optee: Fix multi page dynamic shm pool alloc	2020-01-03 11:21:12 +01:00
shm_pool.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282	2019-06-05 17:36:37 +02:00
supp.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282	2019-06-05 17:36:37 +02:00