[j-nsp] chassisd[1299]: %DAEMON-3: rtslib: ERROR Failed to allocate new block of size 16384

[Alex D.]

Hi,
since yesterday, i see the following syslog messages from several M10i 
running JUNOS 10.4R8.5:
chassisd[1299]: %DAEMON-3: rtslib: ERROR Failed to allocate new block of 
size 16384
This message occurs in irregular intervals and doesn't result in routing 
issues.
Does anybody know what it means ?
Regards,
Alex