Public bug reported:
Kernel 2.6.32-49 hangs at reboot (though not halt) when run under a Xen
PV guest. Our hypervisor is XenServer 6.0 with all the latest patches.
If we revert to 2.6.32-48, the problem goes away and reboots are
successful.
This suggests a regression introduced in -49, possibly this patch
(though I am not certain):
* kernel/sys.c: call disable_nonboot_cpus() in kernel_restart()
- LP: #1193044
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1199987
Title:
2.6.32-49 kernel hangs during reboot under Xen PV guest
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