SERVER-10623, which we apparently didn't completely resolve.
I'm still having a related issue to this in 2.5.4. Also running on an OVH kernel that /sys/devices/system/node is not readable/executable. On startup, the fatal message is logged:
While the fix solved processinfo_linux2.cpp's reading of /sys/devices/system/node/node1, there's another attempt to read it inside of startup_warnings.cpp that isn't wrapped with a try/catch.
The function boost::filesystem::exists(boost::filesystem::path) throws an exception if some component of the path is not accessible by the executing user.