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When devfs dirent is freed, a vnode might still keep a pointer to it,

Description

When devfs dirent is freed, a vnode might still keep a pointer to it,
apparently. Interlock and clear the pointer to avoid free memory
dereference.

Submitted by: bde (previous version)
MFC after: 3 weeks

Details

Provenance
kibAuthored on
Parents
rS294594: Remove printf only useful for debugging.
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