Strange messages.

Strange messages.

[Dan Aizenstros]

Hello All,

Recently I upgraded my Linux/MIPS kernel from 2.2.12 to 
2.4.0-test9 and I started getting messages like the following:

Setting flush to zero for awk.

I did not get this message when using a 2.2.12 kernel but I am
getting them with a 2.4.0-test9 kernel.

The 2.4.0-test9 kernel is based on the code from the snapshot
at oss.sgi.com in the following file,
/pub/linux/mips/mips-linux/simple/crossdev/src/linux-001027.tar.gz
with the patches from the same directory applied.

I get the message many times and for different programs during
system startup.

Has anyone seen this before?

Dan Aizenstros
Software Engineer
V3 Semiconductor Corp.

Re: Strange messages.

[Kevin D. Kissell]

This really deserves to be in the  FAQ.  I guess
I ought to put a version of this up an a web site
somewhere and just point people to the URL:
Either Ralf or I end up answering it about
once a month.  

This message occurs when the kernel gets an 
"unimplemented operation" trap from the FPU, 
which means that an FP instruction has been issued
that the hardware cannot handle on its own.  Usually
this is a conversion of an extreme value or an operation 
on a denormalized value. What the OS is supposed 
to do in this case is to deal with the situation, by killing
the process, fixing up the values, or emulating
the instruction in software.

Setting flush-denormal-to-zero mode of the FPU
and replaying the instruction to see if that helps
is a slightly shady (in my opinion) hack that Ralf put in 
as part of a tiny, minimal emulator that handled these 
exceptions in some versions of MIPS Linux.  MIPS later
integrated a full IEEE FPU emulator from Algorithmics
into the 2.2.12 kernel, but it hasn't yet gone into
the 2.3/2.4 repository.

So long as all you got was that message, and
awk didn't subsequently dump core, you're probably
OK.  Just don't do any serious numerical programming
on the system until the full IEEE support goes in!

            Kevin K.

----- Original Message ----- 
From: "Dan Aizenstros" <dan@vcubed.com>
To: <linux-mips@oss.sgi.com>
Sent: Thursday, November 23, 2000 4:54 PM
Subject: Strange messages.


> Hello All,
> 
> Recently I upgraded my Linux/MIPS kernel from 2.2.12 to 
> 2.4.0-test9 and I started getting messages like the following:
> 
> Setting flush to zero for awk.
> 
> I did not get this message when using a 2.2.12 kernel but I am
> getting them with a 2.4.0-test9 kernel.
> 
> The 2.4.0-test9 kernel is based on the code from the snapshot
> at oss.sgi.com in the following file,
> /pub/linux/mips/mips-linux/simple/crossdev/src/linux-001027.tar.gz
> with the patches from the same directory applied.
> 
> I get the message many times and for different programs during
> system startup.
> 
> Has anyone seen this before?
> 
> Dan Aizenstros
> Software Engineer
> V3 Semiconductor Corp.
> 

Re: Strange messages.

[Kevin D. Kissell]

This really deserves to be in the  FAQ.  I guess
I ought to put a version of this up an a web site
somewhere and just point people to the URL:
Either Ralf or I end up answering it about
once a month.  

This message occurs when the kernel gets an 
"unimplemented operation" trap from the FPU, 
which means that an FP instruction has been issued
that the hardware cannot handle on its own.  Usually
this is a conversion of an extreme value or an operation 
on a denormalized value. What the OS is supposed 
to do in this case is to deal with the situation, by killing
the process, fixing up the values, or emulating
the instruction in software.

Setting flush-denormal-to-zero mode of the FPU
and replaying the instruction to see if that helps
is a slightly shady (in my opinion) hack that Ralf put in 
as part of a tiny, minimal emulator that handled these 
exceptions in some versions of MIPS Linux.  MIPS later
integrated a full IEEE FPU emulator from Algorithmics
into the 2.2.12 kernel, but it hasn't yet gone into
the 2.3/2.4 repository.

So long as all you got was that message, and
awk didn't subsequently dump core, you're probably
OK.  Just don't do any serious numerical programming
on the system until the full IEEE support goes in!

            Kevin K.

----- Original Message ----- 
From: "Dan Aizenstros" <dan@vcubed.com>
To: <linux-mips@oss.sgi.com>
Sent: Thursday, November 23, 2000 4:54 PM
Subject: Strange messages.


> Hello All,
> 
> Recently I upgraded my Linux/MIPS kernel from 2.2.12 to 
> 2.4.0-test9 and I started getting messages like the following:
> 
> Setting flush to zero for awk.
> 
> I did not get this message when using a 2.2.12 kernel but I am
> getting them with a 2.4.0-test9 kernel.
> 
> The 2.4.0-test9 kernel is based on the code from the snapshot
> at oss.sgi.com in the following file,
> /pub/linux/mips/mips-linux/simple/crossdev/src/linux-001027.tar.gz
> with the patches from the same directory applied.
> 
> I get the message many times and for different programs during
> system startup.
> 
> Has anyone seen this before?
> 
> Dan Aizenstros
> Software Engineer
> V3 Semiconductor Corp.
> 

Re: Strange messages.

[Ian Chilton]

Hello,

> Setting flush to zero for awk.

> Has anyone seen this before?


I get this with sshd from OpenSSH....I get lots of them on the
console...not just at boot time. And, it happens with 2.2.14, not just
2.4test9....


Bye for Now,

Ian

                                \|||/
                                (o o)
 /---------------------------ooO-(_)-Ooo---------------------------\
 |  Ian Chilton        (IRC Nick - GadgetMan)     ICQ #: 16007717  |
 |-----------------------------------------------------------------|
 |  E-Mail: ian@ichilton.co.uk     Web: http://www.ichilton.co.uk  |
 |-----------------------------------------------------------------|
 |        Proofread carefully to see if you any words out.         |
 \-----------------------------------------------------------------/

Strange messages

[Louis Garcia]

I'm getting an message from modprobe. I think it's related to agpgart:

Sep 21 19:46:48 tiger crond: crond startup succeeded
Sep 21 19:46:49 tiger xfs: xfs startup succeeded
Sep 21 19:46:49 tiger xfs: listening on port 7100 
Sep 21 19:46:49 tiger xfs: ignoring font path element
/usr/X11R6/lib/X11/fonts/CID (unreadable) 
Sep 21 19:46:49 tiger xfs: ignoring font path element
/usr/X11R6/lib/X11/fonts/local (unreadable) 
Sep 21 19:46:50 tiger smb: smbd startup succeeded
Sep 21 19:46:50 tiger smb: nmbd startup succeeded
Sep 21 19:46:50 tiger anacron: anacron startup succeeded
Sep 21 19:46:50 tiger atd: atd startup succeeded
Sep 21 19:46:51 tiger linuxconf: Running Linuxconf hooks:  succeeded
Sep 21 19:46:56 tiger modprobe: modprobe: Can't locate module
char-major-226
Sep 21 19:46:56 tiger modprobe: modprobe: Can't locate module
char-major-226
Sep 21 19:46:56 tiger kernel: Linux agpgart interface v0.99 (c) Jeff
Hartmann
Sep 21 19:46:56 tiger kernel: agpgart: Maximum main memory to use for
agp memory: 27M
Sep 21 19:46:56 tiger kernel: agpgart: Detected Intel 440BX chipset
Sep 21 19:46:56 tiger kernel: agpgart: AGP aperture is 64M @ 0xec000000
Sep 21 19:46:57 tiger kernel: [drm] AGP 0.99 on Intel 440BX @ 0xec000000
64MB
Sep 21 19:46:57 tiger kernel: [drm] Initialized radeon 1.1.1 20010405 on
minor 0
Sep 21 19:47:16 tiger gdm(pam_unix)[937]: session opened for user
louisg00 by (uid=0)
Sep 21 19:47:24 tiger gnome-name-server[1067]: starting
Sep 21 19:47:24 tiger gnome-name-server[1067]: name server starting

3D seems to be working. I'm working on a Redhat roswell2 with
kernel-2.4.10pre13.

Louis

Strange Messages

[Peter]

Hi,

As of late I am receiving every 10 minutes in my exmh-mail-program-inbox the 
following message:

$ cat ./ExMail/inbox/msg.ygB

From root  Tue Aug 27 10:00:00 2002
Return-Path: <root@philonline.com>
Received: (from root@localhost)
        by philonline.com (8.11.6/8.11.6) id g7R200m01274
        for root; Tue, 27 Aug 2002 10:00:00 +0800
Date: Tue, 27 Aug 2002 10:00:00 +0800
Message-Id: <200208270200.g7R200m01274@philonline.com>
From: root@philonline.com (Cron Daemon)
To: root@philonline.com
Subject: Cron <root@Peter> /usr/lib/sa/sa1 1 1
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/root>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=root>

/bin/sh: /usr/lib/sa/sa1: No such file or directory

What's the meaning of it and how can it be stopped?

Regards
-- 
Peter

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Re: Strange Messages

[Ray Olszewski]

The key is this line:

         From: root@philonline.com (Cron Daemon)

The cron daemon (crond) is trying to run a program as part of a cron job 
but cannot. crond is typically set up to use e-mail to report this sort of 
error.

To stop it, find and fix the problem in some crontab file.

At 10:21 AM 8/27/02 +0800, Peter wrote:
>Hi,
>
>As of late I am receiving every 10 minutes in my exmh-mail-program-inbox the
>following message:
>
>$ cat ./ExMail/inbox/msg.ygB
>
> >From root  Tue Aug 27 10:00:00 2002
>Return-Path: <root@philonline.com>
>Received: (from root@localhost)
>         by philonline.com (8.11.6/8.11.6) id g7R200m01274
>         for root; Tue, 27 Aug 2002 10:00:00 +0800
>Date: Tue, 27 Aug 2002 10:00:00 +0800
>Message-Id: <200208270200.g7R200m01274@philonline.com>
>From: root@philonline.com (Cron Daemon)
>To: root@philonline.com
>Subject: Cron <root@Peter> /usr/lib/sa/sa1 1 1
>X-Cron-Env: <SHELL=/bin/sh>
>X-Cron-Env: <HOME=/root>
>X-Cron-Env: <PATH=/usr/bin:/bin>
>X-Cron-Env: <LOGNAME=root>
>
>/bin/sh: /usr/lib/sa/sa1: No such file or directory
>
>What's the meaning of it and how can it be stopped?



--
-------------------------------------------"Never tell me the odds!"--------
Ray Olszewski					-- Han Solo
Palo Alto, California, USA			  ray@comarre.com
-------------------------------------------------------------------------------

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Re: Strange Messages

[Peter]

Thanks!

ray@comarre.com said:
> To stop it, find and fix the problem in some crontab file.

I tried to do this by creating files /usr/lib/sa/sa1 and /usr/lib/sa/sa2.

Now I get: "/bin/sh: /usr/lib/sa/sa1: Permission denied"

$ ll /usr/lib/sa/sa1                   
-rwxrw-rw-    1 root     root            0 Aug 27 10:57 /usr/lib/sa/sa1

Wy is this permission denied?

After further thinking:

It started to show-up when I added in /etc/aliases the last line
person who should get root's mail
root:		pfheiss
pfheiss:	Peter
		  
I deleted now "pfheiss:	Peter" and the spook is gone.

The file causing the messages is in /etc/cron.d sysstat

 run system activity accounting tool every 10 minutes
*/10 * * * * root /usr/lib/sa/sa1 1 1
 generate a daily summary of process accounting at 16:53
53 16 * * * root /usr/lib/sa/sa2 -A

If I mark (#) the lines in question would that have any adverse effect?



> <root@philonline.com> >Received: (from root@localhost)
>         by philonline.com (8.11.6/8.11.6) id g7R200m01274
>         for root; Tue, 27 Aug 2002 10:00:00 +0800 >Date: Tue, 27 Aug
> 2002 10:00:00 +0800 >Message-Id: <200208270200.g7R200m01274@philonline.
> com> >From: root@philonline.com (Cron Daemon) >To: root@philonline.com
> >Subject: Cron <root@Peter> /usr/lib/sa/sa1 1 1 >X-Cron-Env: <SHELL=/
> bin/sh> >X-Cron-Env: <HOME=/root> >X-Cron-Env: <PATH=/usr/bin:/bin> >
> X-Cron-Env: <LOGNAME=root>

>Peter wrote:
>Hi,
> >As of late I am
> receiving every 10 minutes in my exmh-mail-program-inbox the
> following message:
> >$ cat ./ExMail/inbox/msg.ygB
> >From root  Tue Aug 27 10:00:00 2002 >Return-Path:
> >/bin/sh: /usr/lib/sa/sa1: No such file
> >or directory

> >What's the meaning of it and how can it be stopped? 

Regards
-- 
Peter






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