gpu: nvgpu: deny any request less than engine timeout

Bug 2343124
JIRA NVGPU-1065

Change-Id: I43a436673117af8ac2490d075cea07532f01af0b
Signed-off-by: Preetham Chandru R <pchandru@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1818164
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/ioctl_channel.c b/drivers/gpu/nvgpu/os/linux/ioctl_channel.c
index e9a24923..b48cfa99 100644
--- a/drivers/gpu/nvgpu/os/linux/ioctl_channel.c
+++ b/drivers/gpu/nvgpu/os/linux/ioctl_channel.c
@@ -1227,6 +1227,11 @@ long gk20a_channel_ioctl(struct file *filp,
                         (u32)((struct nvgpu_set_timeout_args *)buf)->timeout;
                 nvgpu_log(g, gpu_dbg_gpu_dbg, "setting timeout (%d ms) for chid %d",
                            timeout, ch->chid);
+                if (timeout < g->fifo_eng_timeout_us / 1000) {
+                        dump_stack();
+                        err = -EINVAL;
+                        break;
+                }
                 ch->timeout_ms_max = timeout;
                 gk20a_channel_trace_sched_param(
                         trace_gk20a_channel_set_timeout, ch);
@@ -1241,6 +1246,11 @@ long gk20a_channel_ioctl(struct file *filp,
                         (1 << NVGPU_TIMEOUT_FLAG_DISABLE_DUMP));
                 nvgpu_log(g, gpu_dbg_gpu_dbg, "setting timeout (%d ms) for chid %d",
                            timeout, ch->chid);
+                if (timeout < g->fifo_eng_timeout_us / 1000) {
+                        dump_stack();
+                        err = -EINVAL;
+                        break;
+                }
                 ch->timeout_ms_max = timeout;
                 ch->timeout_debug_dump = timeout_debug_dump;
                 gk20a_channel_trace_sched_param(