I just jotted that down on paper... christos vm_fault( kernel:page fault trap, code=0 stopped at _nfs_sigintr+0x20: testb $0x40(%ecx) db> trace _nfs_sigintr( _nfs_timer( _softclock( _Xsoftclock( _nfs_readrpc( _nfssvc_iod( _nfssvc( _syscall( .... ------------------------------------------------------------------------------