mount -t sysfs sysfs /sys
I get the error:
Couldn't setup loop device
and the mount fails along with the boot.
I didn't get this error with Busybox 1.1.0 from which I have just upgraded (to get the switch_root fix)
What I believe is happening is that the st structure is uninitialised and in some cases it happens to start off with the st_mode field set to STREG. The lstat fails (because sysfs doesn't exist) and the st structure is not updated leaving the random values from the stack. I notice also that a st_mode=0 which was just before the lstat in 1.1.0 is not there in 1.1.1. I therefore have a trivial patch which adds the st_mode=0 back in, and I haven't seen the problem since.
I will upload the patch in a few minutes
busybox-1.1.1-mount_sysfs-1.patch [^] (488 bytes) 04-05-06 05:39 
