I'm also seeing this - I wasn't able to get a core dump, but was able to get info from strace/lsof to track down the message:

strace shows in a continuous read loop, as it's trying to go past EOF.

pread(9, "", 3502, 30524) = 0 pread(9, "", 3502, 30524) = 0 pread(9, "", 3502, 30524) = 0

I've attached the problem message (gzipped).

-D

does whistling in the dark make me go blind faster?