Re: kern/12404 (panic: ffs_alloccg: map corrupted)

[Mindaugas Rasiukevicius <rmind%NetBSD.org@localhost>]

Here is the patch which may fix the problem:

http://www.netbsd.org/~rmind/ffs_balloc.diff

It is obtained from FreeBSD (see revision 1.52 and 1.53 of ffs_balloc.c),
with some minor changes. It looks for me that fail-path could simplified,
eg. unwindidx could probably be removed. However I do not understand (or
misunderstand) this code enough to claim anything.

Would be great if some FFS-competent developer would take a deeper look at
all the logic of this function.

Thoughts?

-- 
Best regards,
Mindaugas
www.NetBSD.org