kern/77234: [udf] [patch] corrupted data is read from UDF filesystem if read starts at non-aligned offset

Bruce Evans bde at
Sun Mar 11 10:25:53 UTC 2007

On Sun, 11 Mar 2007, Kris Kennaway wrote:

> FYI I dunno about this particular problem but UDF is indeed full of
> bugs.  I tried to get Scott (original author) to look at some problems
> last year but he didnt get back to it.

I tried the same (with patches similar to the ones in this PR) the
year before last.  Then I lost interest in udf since it works worse
than cd9660 for my only application of backing up ffs file systems a
file at a time, and I don't have time to fix this.  (Sequential media
like DVDs needs large non-vnode-based read-ahead unless the drive does
it, but FreeBSD only does vnode-based read ahead.  This loses especially
for metadata.  cd9660 metadata is smaller and more packed than udf
metadata, so cd9660 loses less than udf from this.)


More information about the freebsd-bugs mailing list