On 24.06.20 18:09, Luis Chamberlain wrote: > On Wed, Jun 24, 2020 at 05:54:46PM +0200, Christian Borntraeger wrote: >> >> >> On 24.06.20 16:43, Christoph Hellwig wrote: >>> On Wed, Jun 24, 2020 at 01:11:54PM +0200, Christian Borntraeger wrote: >>>> Does anyone have an idea why "umh: fix processed error when UMH_WAIT_PROC is used" breaks the >>>> linux-bridge on s390? >>> >>> Are we even sure this is s390 specific and doesn't happen on other >>> architectures with the same bridge setup? >> >> Fair point. AFAIK nobody has tested this yet on x86. > > Regardless, can you enable dynamic debug prints, to see if the kernel > reveals anything on the bridge code which may be relevant: > > echo "file net/bridge/* +p" > /sys/kernel/debug/dynamic_debug/control > > Luis When I start a guest the following happens with the patch: [ 47.420237] virbr0: port 2(vnet0) entered blocking state [ 47.420242] virbr0: port 2(vnet0) entered disabled state [ 47.420315] device vnet0 entered promiscuous mode [ 47.420365] virbr0: port 2(vnet0) event 16 [ 47.420366] virbr0: br_fill_info event 16 port vnet0 master virbr0 [ 47.420373] virbr0: toggle option: 12 state: 0 -> 0 [ 47.420536] virbr0: port 2(vnet0) entered blocking state [ 47.420538] virbr0: port 2(vnet0) event 16 [ 47.420539] virbr0: br_fill_info event 16 port vnet0 master virbr0 and the nothing happens. without the patch [ 33.805410] virbr0: hello timer expired [ 35.805413] virbr0: hello timer expired [ 36.184349] virbr0: port 2(vnet0) entered blocking state [ 36.184353] virbr0: port 2(vnet0) entered disabled state [ 36.184427] device vnet0 entered promiscuous mode [ 36.184479] virbr0: port 2(vnet0) event 16 [ 36.184480] virbr0: br_fill_info event 16 port vnet0 master virbr0 [ 36.184487] virbr0: toggle option: 12 state: 0 -> 0 [ 36.184636] virbr0: port 2(vnet0) entered blocking state [ 36.184638] virbr0: port 2(vnet0) entered listening state [ 36.184639] virbr0: port 2(vnet0) event 16 [ 36.184640] virbr0: br_fill_info event 16 port vnet0 master virbr0 [ 36.184645] virbr0: port 2(vnet0) event 16 [ 36.184646] virbr0: br_fill_info event 16 port vnet0 master virbr0 [ 37.805478] virbr0: hello timer expired [ 38.205413] virbr0: port 2(vnet0) forward delay timer [ 38.205414] virbr0: port 2(vnet0) entered learning state [ 38.205427] virbr0: port 2(vnet0) event 16 [ 38.205430] virbr0: br_fill_info event 16 port vnet0 master virbr0 [ 38.765414] virbr0: port 2(vnet0) hold timer expired [ 39.805415] virbr0: hello timer expired [ 40.285410] virbr0: port 2(vnet0) forward delay timer [ 40.285411] virbr0: port 2(vnet0) entered forwarding state [ 40.285418] virbr0: topology change detected, propagating [ 40.285420] virbr0: decreasing ageing time to 400 [ 40.285427] virbr0: port 2(vnet0) event 16 [ 40.285432] virbr0: br_fill_info event 16 port vnet0 master virbr0 [ 40.765408] virbr0: port 2(vnet0) hold timer expired [ 41.805415] virbr0: hello timer expired [ 42.765426] virbr0: port 2(vnet0) hold timer expired [ 43.805425] virbr0: hello timer expired [ 44.765426] virbr0: port 2(vnet0) hold timer expired [ 45.805418] virbr0: hello timer expired and continuing....
