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82c4812730
This assertion cannot be safely/reliably made in the ~SharedInodeVMObject destructor. The problem is that Inode::is_shared_vmobject holds a weak reference to the instance that is being destroyed (ref count 0). Checking the pointer using WeakPtr::unsafe_ptr will produce nullptr depending on timing in this case, and WeakPtr::safe_ref will reliably produce a nullptr as soon as the reference count drops to 0. The only case where this assertion could succeed is when WeakPtr::unsafe_ptr returned the pointer because it won the race against revoking it. And because WeakPtr::safe_ref will always return a nullptr, we cannot reliably assert this from the ~SharedInodeVMObject destructor. Fixes #4621