Comment # 71 on bug 1200461 from Mike DeMicco

(In reply to Jiri Slaby from comment #70)
> (In reply to Franck Bui from comment #58)
> > or maybe simply try to dump the config attribute with dd once with "bs=4096"
> > and once with "bs=4097" ?
> 
> This was buried and not tested, right? But it still makes sense to test...
> 
> i.e. is there any difference:
> strace dd if=config bs=4096 of=/dev/null # should not hang
> strace dd if=config bs=4097 of=/dev/null # might hang
> ?
> 
> config is the same you passed to cat.

Neither of those commands causes a hang.