What does macOS kernel return 34 (KERN_INVALID_MEMORY_CONTROL) mean?

 
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KERN_INVALID_LEDGER KERN_INVALID_SECURITY

KERN_INVALID_MEMORY_CONTROL

A memory-control capability mismatch

KERN_INVALID_MEMORY_CONTROL says that a port passed to a memory-management operation was not a memory cache control port. The result is about the kind of Mach capability presented to the kernel, not about whether a virtual address is mapped or whether a page is resident.

Do not collapse it into KERN_INVALID_ADDRESS, KERN_PROTECTION_FAILURE, or a generic allocation error. Those values describe different layers: address validity, access protection, and resource availability.

What to inspect

  • Identify the API that supplied the port and the memory-object interface it promised.
  • Check whether a wrapper substituted a memory object, named entry, or ordinary port for a control port.
  • Verify that the reference remains valid across the lifetime of the operation.
  • Determine whether the caller needs a privileged control interface rather than a data-access interface.

References


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