Sorry, the screenshot does show that the deadlock is on a spinlock
during flush_tlb_others(), perhaps at
if (nr_cpu_ids > NUM_INVALIDATE_TLB_VECTORS)
raw_spin_lock(&f->tlbstate_lock);
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https://bugs.launchpad.net/bugs/977391
Title:
BUG: soft lockup - CPU#8 stuck for 61s! [kvm:*] in lucid
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