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video: tegra: nvmap: Fix INT30-C overflow defects

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Add check for overflow in nvmap_handle.c when two unsigned integers are added and return error in case of overflow condition.

JIRA: TMM-5724
Bug 4479044

Change-Id: I0f9075796d944cc0c28db15cc611df8a2da780d4
Signed-off-by: Surbhi Singh <surbhis@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3250694
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: Ketan Patil <ketanp@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Surbhi Singh
2024-11-18 09:04:05 +00:00
committed by Jon Hunter
parent a50f7f6fc9
commit a44ed47cf4
1 changed files with 1 additions and 0 deletions
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1
drivers/video/tegra/nvmap/nvmap_handle.c
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@@ -319,6 +319,7 @@ static void remove_handle_ref(struct nvmap_client *client,
{
nvmap_ref_lock(client);
atomic_dec(&ref->handle->share_count);
BUG_ON(client->handle_count == 0);
client->handle_count--;
rb_erase(&ref->node, &client->handle_refs);
nvmap_ref_unlock(client);