Messages in this thread | | | Date | Mon, 6 Dec 2021 07:55:18 +0100 | Subject | Re: [KVM] d3750a0923: WARNING:possible_circular_locking_dependency_detected | From | Paolo Bonzini <> |
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On 12/5/21 14:30, kernel test robot wrote: > > Chain exists of: > fs_reclaim --> mmu_notifier_invalidate_range_start --> &(kvm)->mmu_lock > > Possible unsafe locking scenario: > > CPU0 CPU1 > ---- ---- > lock(&(kvm)->mmu_lock); > lock(mmu_notifier_invalidate_range_start); > lock(&(kvm)->mmu_lock); > lock(fs_reclaim); >
David, this is yours; basically, kvm_mmu_topup_memory_cache must be called outside the mmu_lock.
Paolo
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