---
- branch: MAIN
  date: Sun Mar  8 00:23:59 UTC 2020
  files:
  - new: '1.38'
    old: '1.37'
    path: src/sys/ufs/ufs/ufs_dirhash.c
    pathrev: src/sys/ufs/ufs/ufs_dirhash.c@1.38
    type: modified
  id: 20200308T002359Z.ccb7aa103cac737144f073ddd36ff19ea72e9b82
  log: |
    in ufsdirhash_free(), only examine dh->dh_onlist after taking the
    dirhashlist lock.  if we skip the lock then we might see that
    dh_onlist is zero while ufsdirhash_recycle() is still working on
    the dirhash.  the symptom I saw was that ufsdirhash_free() would
    try to destroy the dh_lock mutex while it was still held.
  module: src
  subject: 'CVS commit: src/sys/ufs/ufs'
  unixtime: '1583627039'
  user: chs