4.9 stability update

[Aleksey Ovcharenko]

On Friday 19 September 2003 08:49, Scott Long wrote:
> All,
>
> We'd like to get a new poll on the stability and readiness of 4.9.  The
> belief is that the last of the PAE-induced instability was resolved on
> August 31.  Is anyone still experiencing unusual crashes, corruption,
> etc, on a system that is running with up-to-date sources?  Now is the
> time to speak up and get the problems resolved so that we can make the
> deadline by next weekend.  Any new testing would be highly appreciated,
> especially in reduced-memory configurations and of course >4GB PAE
> configurations.
Ok, how about dirhash problem http://www.freebsd.org/cgi/query-pr.cgi?pr=51016 
?

It's still same even on 4.9-PRERELEASE. On high load with ~4k virtual users on 
mail server with ufs_dirhash turned on it cause kernel panic.

I have kernel dump for lastest prerelease, so tell me if you need more info to 
solve it, bcuz I don't think it's will be stable with this bug.

P.S. It looks like overflow in offset entry at 
/usr/src/sys/ufs/ufs/ufs_dirhash.c IMHO:
        for (; (offset = DH_ENTRY(dh, slot)) != DIRHASH_EMPTY;
            slot = WRAPINCR(slot, dh->dh_hlen)) {
                if (offset == DIRHASH_DEL)
                        continue;

                if (offset < 0 || offset >= ip->i_size)
                        panic("ufsdirhash_lookup: bad offset in hash array");


>
> Thanks!
>
> The Release Engineering Team
>
>
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-- 
Sincerely Yours, Aleksey Ovcharenko