[libvirt] [PATCH] qemu: unlock qemu driver before return

[Wen Congyang]

When I checked all the place where calling qemuDriverLock(), I found
some problem. The details of the problem is here:
https://www.redhat.com/archives/libvir-list/2011-March/msg01409.html

When I modify the function processWatchdogEvent(), I found that
wdEvent->vm may be freed before processWatchdogEvent() is called.

Wen Congyang (3):
  qemu: avoid qemu_driver being unlocked twice when virThreadPoolNew()
    failed
  qemu: unlock qemu driver and vm before returning from
    processWatchdogEvent()
  hold an extra reference while handling watchdog event

 src/qemu/qemu_driver.c  |   34 +++++++++++++++++++++++++---------
 src/qemu/qemu_process.c |    4 ++++
 2 files changed, 29 insertions(+), 9 deletions(-)