---
- branch: MAIN
  date: Tue Aug  6 15:48:06 UTC 2019
  files:
  - new: '1.136'
    old: '1.135'
    path: src/sys/kern/sysv_shm.c
    pathrev: src/sys/kern/sysv_shm.c@1.136
    type: modified
  id: 20190806T154806Z.9b7f328de6c7a21b801baf4990259709c286e929
  log: |
    Acquire shmseg uobj reference while we hold shm_lock.

    Otherwise nothing prevents it from being detached under our feet when
    we drop shm_lock.

    Reported-by: syzbot+a76c618a6808a0fda475@syzkaller.appspotmail.com
  module: src
  subject: 'CVS commit: src/sys/kern'
  unixtime: '1565106486'
  user: riastradh