Rumko wrote: > Matthew Dillon wrote: > >> >> :Tried to cvs checkout the pkgsrc tree and managed to get "intr 1 at >> :40001/40000 hz, livelocked limit engaged!". After kill-ing it, it core >> :dumped. The backtrace repeats itself over and over, I uploaded kernel and >> :kernel.core to leaf:~rumko/crash/vkernel/30.04.2008/ >> >> Did the vkernel actually lock-up or was it still responding? e.g. did >> you try ^Z'ing or ^C'ing the checkout? It is quite possible that >> the IO co-thread actually managed to exceed the livelock limit without >> it being a bug. >> >> The crash was due to the IO co-thread crashing. The IO co-thread took >> the shutdown signal from the vkernel when you killed it, but since it >> doesn't have a globaldata context that blew it up. >> >> I will mask the shutdown signal on the co-thread to fix the core >> dumping issue but we still need to investigate the livelock. Have >> you been able to reproduce it? >> >> -Matt > > If I remember correctly, it was completely locked-up, but I will retry > tonight.
Managed to lock up the host machine by dd-ing a large (10GB) file ... but couldn't get a memory dump (it seems it did not create it) ... I'll continue with this tomorrow when I'll feel bolder -- Regards, Rumko
