Re: mysterious 2.0.33 crashes

Geert Uytterhoeven (Geert.Uytterhoeven@cs.kuleuven.ac.be)
Fri, 13 Feb 1998 17:06:57 +0100 (CET)

On Fri, 13 Feb 1998, Klaus Lichtenwalder wrote:
> On Mon, 12 Feb 1996, Jon Torrez wrote:
> > (in responce to my previous note)
> > Yes! (read on fool :) )
> >
> > Well, try this Patrick:
> > 1. remove all the patches and run from a clean unpatched kernel;
> > unless your system needs them.
> >
> > 2. do remote logging with syslogd do *.*, something might show up.
> >
> > 3. cross your fingers.
>
> Well, I have to chime in. I'm also administering a web server remotely,
> 2.0.33 with Solar Designers security patches, a bunch of isdn
> interfaces, ethernet to internet backbone, 24 ethernet aliases. This
> machine tends to just lock, after 3 days of uptime. Just now is updated
> to Doug's latest adaptec driver, in case it's a scsi timeout on the disk
> /var is mounted.

Yesterday I've got a problem with a i486SX with 3 D-Link DE220PCT (NE2000
clone) Ethernet boards and a small IDE disk under plain 2.0.33. The machine
serves as the router for our LAN (not connected to the world yet). It runs
named and samba (for WINS).

The system ran out of memory so I couldn't login (remotely) anymore, but it
kept on routing IP packets between the 3 subnets. After a reboot (CTRL-ALT-DEL
to halt still worked) I found this in the logfiles:

Feb 12 17:57:09 tnix kernel: Problem: block on freelist at 005c8290 isn't free.
Feb 12 17:57:10 tnix last message repeated 11 times
Feb 12 17:58:17 tnix last message repeated 10 times
Feb 12 18:01:23 tnix kernel: Problem: block on freelist at 005c8290 isn't free.
Feb 12 18:02:14 tnix last message repeated 3 times
Feb 12 18:03:30 tnix last message repeated 12 times
Feb 12 18:44:02 tnix kernel: Problem: block on freelist at 005c8290 isn't free.
Feb 12 18:44:03 tnix last message repeated 11 times
Feb 12 19:10:10 tnix kernel: Problem: block on freelist at 005c8290 isn't free.
Feb 12 19:10:12 tnix last message repeated 35 times
Feb 12 19:16:47 tnix kernel: Problem: block on freelist at 005c8290 isn't free.
Feb 12 19:16:49 tnix last message repeated 29 times
Feb 12 20:02:22 tnix kernel: Problem: block on freelist at 005c8290 isn't free.
Feb 12 20:02:23 tnix last message repeated 8 times
Feb 12 20:04:43 tnix last message repeated 114 times

and so on...

Some bug in the memory allocation.

Greetings,

Geert

--
Geert Uytterhoeven                     Geert.Uytterhoeven@cs.kuleuven.ac.be
Wavelets, Linux/{m68k~Amiga,PPC~CHRP}  http://www.cs.kuleuven.ac.be/~geert/
Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium




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