Re: [PATCH] optee: Check return value of tee_shm_get_va()

[Jens Wiklander]

On Thu, Mar 12, 2026 at 10:16 AM Sumit Garg <sumit.garg@xxxxxxxxxx> wrote:
>
> On Fri, Mar 06, 2026 at 12:52:39PM +0100, Markus Elfring wrote:
> > …
> > > +++ b/drivers/tee/optee/rpc.c
> > > @@ -393,6 +393,11 @@ static void handle_rpc_func_rpmb_frames(struct tee_context *ctx,
> > >                         params[0].u.memref.shm_offs);
> > >     p1 = tee_shm_get_va(params[1].u.memref.shm,
> > >                         params[1].u.memref.shm_offs);
> > > +   if (IS_ERR(p0) || IS_ERR(p1)) {
> > > +           arg->ret = TEEC_ERROR_BAD_PARAMETERS;
> > > +           goto out;
> > > +   }
> > > +
> > >     if (rpmb_route_frames(rdev, p0, params[0].u.memref.size, p1,
> > >                           params[1].u.memref.size)) {
> > >             arg->ret = TEEC_ERROR_BAD_PARAMETERS;
> > …
> >
> > How do you think about to use an additional label for the shown
> > error code assignment?
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/coding-style.rst?h=v7.0-rc2#n526
> >
>
> I suppose here you meant to update the label name since it's the same
> error type used by other code paths too. So following label rename
> should be fine I think as per coding guidelines:
>
> s/out/err_dev_put/

Wouldn't the name err_dev_put suggest this only occurs in the error path?

Cheers,
Jens

>
> -Sumit