---
- branch: netbsd-10
  date: Thu Apr 18 18:22:10 UTC 2024
  files:
  - new: 1.541.2.1
    old: '1.541'
    path: src/sys/kern/init_main.c
    pathrev: src/sys/kern/init_main.c@1.541.2.1
    type: modified
  - new: 1.14.2.1
    old: '1.14'
    path: src/sys/kern/kern_hook.c
    pathrev: src/sys/kern/kern_hook.c@1.14.2.1
    type: modified
  - new: 1.101.2.1
    old: '1.101'
    path: src/sys/kern/vfs_mount.c
    pathrev: src/sys/kern/vfs_mount.c@1.101.2.1
    type: modified
  - new: 1.82.4.1
    old: '1.82'
    path: src/sys/miscfs/procfs/procfs.h
    pathrev: src/sys/miscfs/procfs/procfs.h@1.82.4.1
    type: modified
  - new: 1.116.20.1
    old: '1.116'
    path: src/sys/miscfs/procfs/procfs_subr.c
    pathrev: src/sys/miscfs/procfs/procfs_subr.c@1.116.20.1
    type: modified
  - new: 1.111.4.1
    old: '1.111'
    path: src/sys/miscfs/procfs/procfs_vfsops.c
    pathrev: src/sys/miscfs/procfs/procfs_vfsops.c@1.111.4.1
    type: modified
  - new: 1.229.4.1
    old: '1.229'
    path: src/sys/miscfs/procfs/procfs_vnops.c
    pathrev: src/sys/miscfs/procfs/procfs_vnops.c@1.229.4.1
    type: modified
  id: 20240418T182210Z.7b2be09be7b9f01e1e5211cf2ca5c9be8f4e78de
  log: "Pull up following revision(s) (requested by hannken in ticket #668):\n\n\tsys/miscfs/procfs/procfs.h:
    revision 1.83\n\tsys/miscfs/procfs/procfs.h: revision 1.84\n\tsys/kern/vfs_mount.c:
    revision 1.104\n\tsys/miscfs/procfs/procfs_vnops.c: revision 1.230\n\tsys/kern/init_main.c:
    revision 1.547\n\tsys/kern/kern_hook.c: revision 1.15\n\tsys/miscfs/procfs/procfs_vfsops.c:
    revision 1.112\n\tsys/miscfs/procfs/procfs_vfsops.c: revision 1.113\n\tsys/miscfs/procfs/procfs_vfsops.c:
    revision 1.114\n\tsys/miscfs/procfs/procfs_subr.c: revision 1.117\n\nPrint dangling
    vnode before panic() to help debug.\n\nPR kern/57775 \"\"panic: unmount: dangling
    vnode\" while umounting procfs\"\nProtect kernel hooks exechook, exithook and
    forkhook with rwlock.\n\nLock as writer on establish/disestablish and as reader
    on list traverse.\n\nFor exechook ride \"exec_lock\" as it is already take as
    reader when\ntraversing the list.  Add local locks for exithook and forkhook.\n\nMove
    exec_init before signal_init as signal_init calls exechook_establish()\nthat needs
    \"exec_lock\".\n\nPR kern/39913 \"exec, fork, exit hooks need locking\"\n\nAdd
    a hashmap to access all procfs nodes by pid.\n\nUsing the exechook to revoke procfs
    nodes is racy and may deadlock:\none thread runs doexechooks() -> procfs_revoke_vnodes()
    and wants to suspend\nthe file system for vgone(), while another thread runs a
    forced unmount,\nhas the file system suspended, tries to disestablish the exechook
    and\nwaits for doexechooks() to complete.\n\nEstablish/disestablish the exechook
    on module load/unload instead\nmount/unmount and use the hashmap to access all
    procfs nodes for this pid.\n\nMay fix PR kern/57775 \"\"panic: unmount: dangling
    vnode\" while umounting procfs\"\n\nRemove all procfs nodes for this process on
    process exit.\n"
  module: src
  subject: 'CVS commit: [netbsd-10] src/sys'
  unixtime: '1713464530'
  user: martin