On Friday 02 December 2005 14.54, John Baldwin wrote: > On Friday 02 December 2005 05:00 am, Yuri Khotyaintsev wrote: > > I have the following panic occurring several times a week. The machine is > > an NFS server, and it usually panics early in the morning, when first > > people try to access it. After reboot it may work OK for 1-2 days, and > > then panics again. I have tried changing memory and replacing disk which > > was exported via NFS, but nothing helped :( > > > > Any suggestion on how to fix this panic will be very much appreciated ! > > This panic (in propagate_priority) is usually caused when a thread goes to > sleep while holding a mutex (which is forbidden). If you enable INVARIANTS > and/or WITNESS you should get a better panic, and with WITNESS you will > even be warned when a thread goes to sleep while holding a mutex. However, > these options do introduce considerable execution overhead, and sometimes > that overhead changes the timing enough to hide the race. :(
I am compiling a new kernel with INVARIANTS and WITNESS now. Will wait for a "better" panic ;-) -- Dr. Yuri Khotyaintsev Institutet för rymdfysik (IRF), Uppsala _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"