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Re: Strange segmentation faults and Zombies



On Wed, 17 Sep 2003 22:29:58 +0200
Markus Schabel <markus.schabel@tgm.ac.at> wrote:

> I've seen some strange things on my (stable with security-updates)
> server: the last apt-get update didn't work because gzip segfaultet.
> I've copied gzip from another server over the version on this server,
> but it also crashed. Interesting was that the executable was bigger
> after the segfault.

curious.

> In a ps I can see a lot of Zombies (rm, ln, readlink, grep) and I've no
> idea where they come from.
> 

it's the daily cronjob that stole.

> You think the server got hacked? Are there any other things that can
> lead to this? man also behaves strange, it says either "No manual entry
> for...", "What manual page do you want?" or nothing.

i'm thinking about a hardware problem. 
may the harddrive is in failure (get the ouput of dmesg) or a very big
ram problem that corrupt files on the hard drive.

in every case simply copy all the data you can and inspect the hdd in another box mounting it read only.

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