On 07.03.2022 15:20, Andrea Stevanato wrote: > On 3/7/2022 12:46 PM, Roger Pau Monné wrote: >> On Mon, Mar 07, 2022 at 12:39:22PM +0100, Andrea Stevanato wrote: >>> /local/domain/2 = "" (n0,r2) >>> /local/domain/2/vm = "/vm/f6dca20a-54bb-43af-9a62-67c55cb75708" (n0,r2) >>> /local/domain/2/name = "guest1" (n0,r2) >>> /local/domain/2/cpu = "" (n0,r2) >>> /local/domain/2/cpu/0 = "" (n0,r2) >>> /local/domain/2/cpu/0/availability = "online" (n0,r2) >>> /local/domain/2/cpu/1 = "" (n0,r2) >>> /local/domain/2/cpu/1/availability = "online" (n0,r2) >>> /local/domain/2/memory = "" (n0,r2) >>> /local/domain/2/memory/static-max = "1048576" (n0,r2) >>> /local/domain/2/memory/target = "1048577" (n0,r2) >>> /local/domain/2/memory/videoram = "-1" (n0,r2) >>> /local/domain/2/device = "" (n0,r2) >>> /local/domain/2/device/suspend = "" (n0,r2) >>> /local/domain/2/device/suspend/event-channel = "" (n2) >>> /local/domain/2/device/vif = "" (n0,r2) >>> /local/domain/2/device/vif/0 = "" (n2,r1) >>> /local/domain/2/device/vif/0/backend = "/local/domain/1/backend/vif/2/0" >>> (n2,r1) >>> /local/domain/2/device/vif/0/backend-id = "1" (n2,r1) >>> /local/domain/2/device/vif/0/state = "6" (n2,r1) >>> /local/domain/2/device/vif/0/handle = "0" (n2,r1) >>> /local/domain/2/device/vif/0/mac = "00:16:3e:07:df:91" (n2,r1) >>> /local/domain/2/device/vif/0/xdp-headroom = "0" (n2,r1) >>> /local/domain/2/control = "" (n0,r2) >>> /local/domain/2/control/shutdown = "" (n2) >>> /local/domain/2/control/feature-poweroff = "1" (n2) >>> /local/domain/2/control/feature-reboot = "1" (n2) >>> /local/domain/2/control/feature-suspend = "" (n2) >>> /local/domain/2/control/sysrq = "" (n2) >>> /local/domain/2/control/platform-feature-multiprocessor-suspend = "1" >>> (n0,r2) >>> /local/domain/2/control/platform-feature-xs_reset_watches = "1" (n0,r2) >>> /local/domain/2/data = "" (n2) >>> /local/domain/2/drivers = "" (n2) >>> /local/domain/2/feature = "" (n2) >>> /local/domain/2/attr = "" (n2) >>> /local/domain/2/error = "" (n2) >>> /local/domain/2/error/device = "" (n2) >>> /local/domain/2/error/device/vif = "" (n2) >>> /local/domain/2/error/device/vif/0 = "" (n2) >>> /local/domain/2/error/device/vif/0/error = "1 allocating event channel" >>> (n2) >> >> That's the real error. Your guest netfront fails to allocate the event >> channel. Do you get any messages in the guest dmesg after trying to >> attach the network interface? > > Just these two lines: > > [ 389.453390] vif vif-0: 1 allocating event channel > [ 389.804135] vif vif-0: 1 allocating event channel
Well, these are the error messages, from xenbus_alloc_evtchn(). What's a little odd is that the error code is positive, but that's how -EPERM is logged. Is there perhaps a strange or broken XSM policy in use? I ask because evtchn_alloc_unbound() itself wouldn't return -EPERM afaics. Jan
