We observed the following kmemleak report:
unreferenced object 0xffff000007904500 (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:
[<000000004c12b1c7>] kmem_cache_alloc+0x1ac/0x2f4
[<000000005d23eb4f>] tee_shm_alloc+0x78/0x230
[<00000000794dd22c>] optee_handle_rpc+0x60/0x6f0
[<00000000d9f7c52d>] optee_do_call_with_arg+0x17c/0x1dc
[<00000000c35884da>] optee_open_session+0x128/0x1ec
[<000000001748f2ff>] tee_client_open_session+0x28/0x40
[<00000000aecb5389>] optee_enumerate_devices+0x84/0x2a0
[<000000003df18bf1>] optee_probe+0x674/0x6cc
[<000000003a4a534a>] platform_drv_probe+0x54/0xb0
[<000000000c51ce7d>] really_probe+0xe4/0x4d0
[<000000002f04c865>] driver_probe_device+0x58/0xc0
[<00000000b485397d>] device_driver_attach+0xc0/0xd0
[<00000000c835f0df>] __driver_attach+0x84/0x124
[<000000008e5a429c>] bus_for_each_dev+0x70/0xc0
[<000000001735e8a8>] driver_attach+0x24/0x30
[<000000006d94b04f>] 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 <[email protected]>
---
Hi bruce
compared with v1, update branch info
Please help me merge this into the following two branches:
v5.15/standard/nxp-sdk-5.15/nxp-soc
v5.15/standard/preempt-rt/nxp-sdk-5.15/nxp-soc
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 <linux/kmemleak.h>
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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