I'm getting conflicts with the latest 6.1 branches that
I pushed last night.
Can you double check the patch and send a v2 ?
Bruce
In message: [linux-yocto][linux-yocto v6.1/standard/nxp-sdk-6.1/nxp-soc &
v6.1/standard/preempt-rt/nxp-sdk-6.1/nxp-soc][PATCH] optee: Suppress false
positive kmemleak report in optee_handle_rpc()
on 04/12/2023 Xiaolei Wang wrote:
> We observed the following kmemleak report:
> unreferenced object 0x07904500 (size 128):
> comm "swapper/0", pid 1, jiffies 4294892671 (age 44.036s)
> hex dump (first 32 bytes):
> 00 47 90 07 00 00 ff ff 60 00 c0 ff 00 00 00 00 .G..`...
> 60 00 80 13 00 80 ff ff a0 00 00 00 00 00 00 00 `...
> backtrace:
> [<4c12b1c7>] kmem_cache_alloc+0x1ac/0x2f4
> [<5d23eb4f>] tee_shm_alloc+0x78/0x230
> [<794dd22c>] optee_handle_rpc+0x60/0x6f0
> [<d9f7c52d>] optee_do_call_with_arg+0x17c/0x1dc
> [<c35884da>] optee_open_session+0x128/0x1ec
> [<1748f2ff>] tee_client_open_session+0x28/0x40
> [<aecb5389>] optee_enumerate_devices+0x84/0x2a0
> [<3df18bf1>] optee_probe+0x674/0x6cc
> [<3a4a534a>] platform_drv_probe+0x54/0xb0
> [<0c51ce7d>] really_probe+0xe4/0x4d0
> [<2f04c865>] driver_probe_device+0x58/0xc0
> [<b485397d>] device_driver_attach+0xc0/0xd0
> [<c835f0df>] __driver_attach+0x84/0x124
> [<8e5a429c>] bus_for_each_dev+0x70/0xc0
> [<1735e8a8>] driver_attach+0x24/0x30
> [<6d94b04f>] bus_add_driver+0x104/0x1ec
>
> This is not a memory leak because we pass the share memory pointer
> to secure world and would get it from secure world before releasing it.
>
> Signed-off-by: Xiaolei Wang
> ---
> drivers/tee/optee/rpc.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/tee/optee/rpc.c b/drivers/tee/optee/rpc.c
> index 456833d82007..b04988d54ad9 100644
> --- a/drivers/tee/optee/rpc.c
> +++ b/drivers/tee/optee/rpc.c
> @@ -13,6 +13,7 @@
> #include "optee_private.h"
> #include "optee_smc.h"
> #include "optee_rpc_cmd.h"
> +#include
>
> struct wq_entry {
> struct list_head link;
> @@ -516,6 +517,7 @@ void optee_handle_rpc(struct tee_context *ctx, struct
> optee_rpc_param *param,
> param->a4 = 0;
> param->a5 = 0;
> }
> + kmemleak_not_leak(shm);
> break;
> case OPTEE_SMC_RPC_FUNC_FREE:
> shm = reg_pair_to_ptr(param->a1, param->a2);
> --
> 2.25.1
>
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