Hello Sumit Garg,
The patch 42bf4152d8a7: "tee: add supp_nowait flag in tee_context
struct" from Jan 29, 2019, leads to the following static checker
warning:
drivers/tee/tee_core.c:996 tee_client_open_context()
error: 'ctx' dereferencing possible ERR_PTR()
drivers/tee/tee_core.c
986 } while (IS_ERR(ctx) && PTR_ERR(ctx) != -ENOMEM);
^^^^^^^^^^^^^^^^^^^^^^^^
ctx can be ERR_PTR(-ENOMEM);
987
988 put_device(put_dev);
989 /*
990 * Default behaviour for in kernel client is to not wait for
991 * tee-supplicant if not present for any requests in this context.
992 * Also this flag could be configured again before call to
993 * tee_client_open_session() if any in kernel client requires
994 * different behaviour.
995 */
--> 996 ctx->supp_nowait = true;
^^^^^^^^^^^^^^^^
And it leads to an Oops here.
997 return ctx;
998 }
regards,
dan carpenter
