g_vfs write error = 28, bad memory?

[Per olof Ljungmark]

I use a memory file system for some tmp files and last night I saw this, 
followed by a reboot. Bad memory? 6-STABLE from April..

foo-bar kernel: g_vfs_done():md0[WRITE(offset=259244032, 
length=131072)]error = 28
foo-bar kernel: g_vfs_done():md0[WRITE(offset=259375104, 
length=131072)]error = 28
[ten more lines...]
[reboot]

Thanks,

Per olof