Make sure that the notifier object fits within the supplied buffer.
Bug
1739183
Bug
1739932
Change-Id: I713574ce797ffc23cec10b5114f469dbadc68f1e
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/
1026410
(cherry picked from commit
f476b93eb19b962b8760457102448bd533efc54d)
Reviewed-on: http://git-master/r/
1028757
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
#endif
static int gk20a_init_error_notifier(struct channel_gk20a *ch,
- struct nvgpu_set_error_notifier *args) {
- void *va;
-
+ struct nvgpu_set_error_notifier *args)
+{
+ struct device *dev = dev_from_gk20a(ch->g);
struct dma_buf *dmabuf;
+ void *va;
+ u64 end = args->offset + sizeof(struct nvgpu_notification);
if (!args->mem) {
pr_err("gk20a_init_error_notifier: invalid memory handle\n");
pr_err("Invalid handle: %d\n", args->mem);
return -EINVAL;
}
+
+ if (end > dmabuf->size || end < sizeof(struct nvgpu_notification)) {
+ dma_buf_put(dmabuf);
+ gk20a_err(dev, "gk20a_init_error_notifier: invalid offset\n");
+ return -EINVAL;
+ }
+
/* map handle */
va = dma_buf_vmap(dmabuf);
if (!va) {