Hace un tiempo que he visto este mensaje en máquinas virtuales con smp:
BUG: soft lockup detected on CPU#2!
[<c0441a54>] softlockup_tick+0×96/0xa4
[<c04092a9>] timer_interrupt+0×504/0×557
[<c0441c87>] handle_IRQ_event+0×27/0×51
[<c0441d44>] __do_IRQ+0×93/0xe8
[<c0406d9b>] do_IRQ+0×93/0xae
[<c0541911>] evtchn_do_upcall+0×64/0x9b
[<c0405515>] hypervisor_callback+0x3d/0×48
[<c04084c3>] raw_safe_halt+0x8c/0xaf
[<c040321a>] xen_idle+0×22/0x2e
[<c0403339>] cpu_idle+0×91/0xab
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Preocupado me puse a buscar y encontré esto en un foro:
The soft lockup is technically not a BUG. You will see these errors if an IRQ takes more then 10 secondsto respond. Soft lockup messages after suspend/resume or live migration (Red Hat Bugzilla 250994). These messages are harmless, but there may be a period of inactivity in the guest during live migration as a result of the lockup. Así que nada, ya puedo estar tranquilo.
