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gpu: nvgpu: gk20a: add syncpt id checks

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add valid syncpt id checks when syncpt id is
extracted from fence fd

Bug 1448825

Change-Id: I0f1722aad60e7644b8f490f24cf18a3b80f8583c
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/390572
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Deepak Nibade
2014-04-01 12:14:50 +05:30
committed by Dan Willemsen
parent 65c230fc83
commit f5fe93456f
1 changed files with 10 additions and 0 deletions
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10
drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
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@@ -119,6 +119,16 @@ int gk20a_channel_syncpt_wait_fd(struct gk20a_channel_sync *s, int fd,
if (!sync_fence)
return -EINVAL;
/* validate syncpt ids */
list_for_each_entry(pt, &sync_fence->pt_list_head, pt_list) {
u32 wait_id = nvhost_sync_pt_id(pt);
if (!wait_id ||
wait_id >= nvhost_syncpt_nb_pts_ext(sp->host1x_pdev)) {
sync_fence_put(sync_fence);
return -EINVAL;
}
}
num_wait_cmds = nvhost_sync_num_pts(sync_fence);
gk20a_channel_alloc_priv_cmdbuf(c, 4 * num_wait_cmds, &wait_cmd);
if (wait_cmd == NULL) {