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test-runner: fix kernel panic on exit for UML

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UML requires RB_POWER_OFF rather than RB_AUTOBOOT (Qemu) in order
to avoid a kernel panic from killing init.
This commit is contained in:
James Prestwood 2022-04-01 15:16:38 -07:00 committed by Denis Kenzior
parent f59e69c6c4
commit 25db380833
1 changed files with 10 additions and 4 deletions
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14
tools/runner.py
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@ -479,10 +479,8 @@ class QemuRunner(RunnerAbstract):
def stop(self):
RB_AUTOBOOT = 0x01234567
#
# Calling 'reboot' or 'shutdown' from a shell (e.g. os.system('reboot'))
# is not the same the POSIX reboot() and will cause a kernel panic since
# we are the init process. The libc.reboot() allows the VM to exit
# gracefully.
# Killing init() results in a kernel panic. For QEMU a graceful
# exit is achieved with RB_AUTOBOOT
#
libc.reboot(RB_AUTOBOOT)
@ -511,3 +509,11 @@ class UmlRunner(RunnerAbstract):
self._prepare_mounts()
super().prepare_environment()
def stop(self):
RB_POWER_OFF = 0x4321fedc
#
# Killing init() results in a kernel panic. For UML a graceful
# exit is achieved with RB_POWER_OFF
#
libc.reboot(RB_POWER_OFF)