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nvhost_ctrl_gpu: Avoid sending null pointer to memcpy
Undefined Behaviour Sanitizer reports a null pointer is being sent to memcpy, thought it's "guaranteed to never be null". Guard it with an if statement, and log when the action has been averted.
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@ -248,7 +248,13 @@ NvResult nvhost_ctrl_gpu::ZBCSetTable(const std::vector<u8>& input, std::vector<
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IoctlZbcSetTable params{};
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std::memcpy(¶ms, input.data(), input.size());
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// TODO(ogniK): What does this even actually do?
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std::memcpy(output.data(), ¶ms, output.size());
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// Prevent null pointer being passed as arg 1
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if (output.empty()) {
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LOG_WARNING(Service_NVDRV, "Avoiding passing null pointer to memcpy");
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} else {
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std::memcpy(output.data(), ¶ms, output.size());
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}
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return NvResult::Success;
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}
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