On 12/28/22 01:21, Michal Luczaj wrote:
Does it mean kvm_xen_hcall_evtchn_send() deadlocks in the same fashion?
kvm_xen_eventfd_reset()
mutex_lock()
srcu_read_lock()
kvm_xen_hcall_evtchn_send()
kvm_xen_set_evtchn()
mutex_lock()
synchronize_srcu()
Yes, I imagine that in practice you won't have running vCPUs during a reset but the bug exists. Thanks!
Paolo
