drm/amdkfd: NULL dereference involving create_process()

We accidentally return ERR_PTR(0) which is NULL.  The caller is not
expecting that and it leads to an Oops.

Fixes: dd59239a9862 ("amdkfd: init aperture once per process")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
index 84d1ffd1eef950480804f2bba8bc4ceabcef1998..1190d06884ed3ce4f944b8befcd9744547a1c6d9 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
@@ -318,7 +318,8 @@ static struct kfd_process *create_process(const struct task_struct *thread)
 
        /* init process apertures*/
        process->is_32bit_user_mode = in_compat_syscall();
-       if (kfd_init_apertures(process) != 0)
+       err = kfd_init_apertures(process);
+       if (err != 0)
                goto err_init_apretures;
 
        return process;