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| author | Jens Wiklander <jens.wiklander@linaro.org> | 2021-12-28 21:25:57 +0100 |
|---|---|---|
| committer | Jens Wiklander <jens.wiklander@linaro.org> | 2022-01-24 13:00:59 +0100 |
| commit | 4064c461148ab129dfe5eaeea129b4af6cf4b9b7 (patch) | |
| tree | 35f43aad8d9117fcbbf19d1f00780cbdb6d7c0ed /drivers/tee | |
| parent | abc8dc34d1f6e34ed346c6e3fc554127e421b769 (diff) | |
| download | linux-4064c461148ab129dfe5eaeea129b4af6cf4b9b7.tar.bz2 | |
optee: add error checks in optee_ffa_do_call_with_arg()
Adds error checking in optee_ffa_do_call_with_arg() for correctness.
Fixes: 4615e5a34b95 ("optee: add FF-A support")
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Diffstat (limited to 'drivers/tee')
| -rw-r--r-- | drivers/tee/optee/ffa_abi.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/tee/optee/ffa_abi.c b/drivers/tee/optee/ffa_abi.c index 20a1b1a3d965..0775759a29c0 100644 --- a/drivers/tee/optee/ffa_abi.c +++ b/drivers/tee/optee/ffa_abi.c @@ -619,9 +619,18 @@ static int optee_ffa_do_call_with_arg(struct tee_context *ctx, .data2 = (u32)(shm->sec_world_id >> 32), .data3 = shm->offset, }; - struct optee_msg_arg *arg = tee_shm_get_va(shm, 0); - unsigned int rpc_arg_offs = OPTEE_MSG_GET_ARG_SIZE(arg->num_params); - struct optee_msg_arg *rpc_arg = tee_shm_get_va(shm, rpc_arg_offs); + struct optee_msg_arg *arg; + unsigned int rpc_arg_offs; + struct optee_msg_arg *rpc_arg; + + arg = tee_shm_get_va(shm, 0); + if (IS_ERR(arg)) + return PTR_ERR(arg); + + rpc_arg_offs = OPTEE_MSG_GET_ARG_SIZE(arg->num_params); + rpc_arg = tee_shm_get_va(shm, rpc_arg_offs); + if (IS_ERR(rpc_arg)) + return PTR_ERR(rpc_arg); return optee_ffa_yielding_call(ctx, &data, rpc_arg); } |