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Kernel: Guard Process "protected data" with a spinlock
This ensures that both mutable and immutable access to the protected data of a process is serialized. Note that there may still be multiple TOCTOU issues around this, as we have a bunch of convenience accessors that make it easy to introduce them. We'll need to audit those as well.
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11 changed files with 348 additions and 300 deletions
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@ -18,11 +18,10 @@ void Process::sys$exit(int status)
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
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}
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{
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ProtectedDataMutationScope scope { *this };
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m_protected_values.termination_status = status;
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m_protected_values.termination_signal = 0;
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}
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with_mutable_protected_data([status](auto& protected_data) {
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protected_data.termination_status = status;
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protected_data.termination_signal = 0;
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});
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auto* current_thread = Thread::current();
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current_thread->set_profiling_suppressed();
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