Re: Detected potential for stack overflows, stack left: 796 bytes

[Seth Mos <knuffie@xxxxxxxxx>]

At 14:12 22-8-2002 -0500, Steve Lord wrote:
> > Could you quickly list them (just curious) ?
>
> Off the top of my head:
>
>         hitting a bug in filemap.c unlocking an unlocked page, seems to
>         be lvm related.

Needs fixes for a release.

>         corruption with the combination of fsx and heavy memory load
>         for an fs with a blocksize less than a page - does not happen
>         with the default 4K block size.

The new blocksize is experimental and you could put a warning message in.

>         a hang in unmount, or remount readonly - I only see this on
>         my laptop after using some vpn software, but I do not think
>         the vpn is related. I cannot hit it elsewhere, but something
>         similar has been reported.

Sounds complicated and hard to investigate.

>         the defragmenter seems to be able to go haywire and suck up
>         cpu time.

Ongoing work, these things happen ;)

>         version 2 logs have some end cases to shake out - make a small
>         log and pound on metadata really hard. If I make a larger log
>         then I cannot hit this.

Default the utilities for a release to a v1 log. If forcing a v2 log print 
a warning.

>         An oops in xfs_iget - or a hang depending on who you are, seems
>         to take very heavy load and a few cpus to hit.

Needs fixing.

> Thats enough for now!
>
> Steve

Although some points need fixing, a 1.1.1 release without the newer 
functionality (or print a warning) might be a good idea. Bring out a 1.2 
release when we are certain it is tested enough.


I Currently have a shortage of hardware to test v2 logs and software raid5. 
Pursuing my manager for spares :)

Using 2.4.19(ish) here on a couple machines have proved succesful so far.

2.4.19-rc3-xfs 9:14am  up 24 days (Internet gateway,squid cache, webserver, 
mailserver 2Mbit, lightly loaded)
2.4.19-xfs 9:16am  up 17 days (Test server nfs, samba, gigabit Ethernet, 
medium loaded)

Without any fancy features the kernel is running fine.

Cheers

--
Seth
It might just be your lucky day, if you only knew.