[Yaffs] Unable to mount system.img but unyaffs reads it corr…

Good evening,

I'm trying to mount yaffs2 image files on a Linux system. I've got a
kernel compiled correctly and can successfully mount an file
containing a yaffs2 filesystem but only lost+found is present in the
mount point. A lot of reading suggests this is due to missing OOB data.

However, the same thing happens with the system.img file from the
Google SDK. Further, unyaffs successfully reads system.img and unpacks
it so all the necessary information is present in the image file to
read the filesystem.

Any ideas on why unyaffs recognizes the filesystem and the yaffs2
kernel code doesn't?

-David